./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector-regression/recHanoi03-1.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_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/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 6ccf0fb82c260d93e0a183861fdeec7e448b86af ........................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/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 6ccf0fb82c260d93e0a183861fdeec7e448b86af ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:22:07,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:22:07,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:22:07,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:22:07,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:22:07,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:22:07,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:22:07,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:22:07,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:22:07,213 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:22:07,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:22:07,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:22:07,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:22:07,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:22:07,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:22:07,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:22:07,233 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:22:07,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:22:07,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:22:07,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:22:07,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:22:07,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:22:07,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:22:07,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:22:07,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:22:07,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:22:07,278 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:22:07,280 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:22:07,282 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:22:07,283 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:22:07,284 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:22:07,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:22:07,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:22:07,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:22:07,291 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:22:07,291 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:22:07,292 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:22:07,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:22:07,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:22:07,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:22:07,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:22:07,303 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:22:07,350 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:22:07,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:22:07,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:22:07,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:22:07,354 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:22:07,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:22:07,354 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:22:07,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:22:07,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:22:07,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:22:07,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:22:07,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:22:07,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:22:07,357 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:22:07,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:22:07,358 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:22:07,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:22:07,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:22:07,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:22:07,359 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:22:07,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:22:07,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:22:07,360 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:22:07,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:22:07,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:22:07,361 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:22:07,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:22:07,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:22:07,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:22:07,362 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_7c63a2b2-185d-4f14-9380-cc2970f75f5b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ccf0fb82c260d93e0a183861fdeec7e448b86af [2020-11-30 01:22:07,738 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:22:07,789 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:22:07,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:22:07,797 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:22:07,799 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:22:07,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/../../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2020-11-30 01:22:07,885 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/data/8a4618e44/1395aead727f4d94a5856638d09858a5/FLAG85a0f159c [2020-11-30 01:22:08,570 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:22:08,571 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2020-11-30 01:22:08,584 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/data/8a4618e44/1395aead727f4d94a5856638d09858a5/FLAG85a0f159c [2020-11-30 01:22:08,924 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/data/8a4618e44/1395aead727f4d94a5856638d09858a5 [2020-11-30 01:22:08,931 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:22:08,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:22:08,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:22:08,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:22:08,946 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:22:08,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:22:08" (1/1) ... [2020-11-30 01:22:08,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5997c8c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:08, skipping insertion in model container [2020-11-30 01:22:08,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:22:08" (1/1) ... [2020-11-30 01:22:08,959 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:22:08,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:22:09,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:22:09,202 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:22:09,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:22:09,246 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:22:09,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:09 WrapperNode [2020-11-30 01:22:09,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:22:09,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:22:09,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:22:09,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:22:09,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:09" (1/1) ... [2020-11-30 01:22:09,276 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:09" (1/1) ... [2020-11-30 01:22:09,298 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:22:09,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:22:09,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:22:09,302 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:22:09,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:09" (1/1) ... [2020-11-30 01:22:09,312 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:09" (1/1) ... [2020-11-30 01:22:09,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:09" (1/1) ... [2020-11-30 01:22:09,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:09" (1/1) ... [2020-11-30 01:22:09,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:09" (1/1) ... [2020-11-30 01:22:09,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:09" (1/1) ... [2020-11-30 01:22:09,332 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:09" (1/1) ... [2020-11-30 01:22:09,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:22:09,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:22:09,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:22:09,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:22:09,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:22:09,429 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-11-30 01:22:09,430 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-11-30 01:22:09,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:22:09,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:22:09,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:22:09,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:22:09,677 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:22:09,678 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 01:22:09,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:22:09 BoogieIcfgContainer [2020-11-30 01:22:09,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:22:09,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:22:09,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:22:09,708 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:22:09,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:22:08" (1/3) ... [2020-11-30 01:22:09,710 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c7483a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:22:09, skipping insertion in model container [2020-11-30 01:22:09,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:09" (2/3) ... [2020-11-30 01:22:09,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76c7483a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:22:09, skipping insertion in model container [2020-11-30 01:22:09,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:22:09" (3/3) ... [2020-11-30 01:22:09,713 INFO L111 eAbstractionObserver]: Analyzing ICFG recHanoi03-1.c [2020-11-30 01:22:09,726 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:22:09,743 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:22:09,773 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:22:09,823 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:22:09,824 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:22:09,824 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:22:09,824 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:22:09,824 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:22:09,824 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:22:09,824 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:22:09,824 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:22:09,841 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-30 01:22:09,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 01:22:09,846 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:22:09,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:22:09,848 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:22:09,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:22:09,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1397741056, now seen corresponding path program 1 times [2020-11-30 01:22:09,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:22:09,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916082251] [2020-11-30 01:22:09,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:22:09,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:22:09,997 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:22:10,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:22:10,026 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:22:10,049 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:22:10,050 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:22:10,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:22:10,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:22:10 BoogieIcfgContainer [2020-11-30 01:22:10,083 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:22:10,086 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:22:10,086 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:22:10,087 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:22:10,087 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:22:09" (3/4) ... [2020-11-30 01:22:10,110 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:22:10,118 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:22:10,121 INFO L168 Benchmark]: Toolchain (without parser) took 1184.63 ms. Allocated memory is still 102.8 MB. Free memory was 72.8 MB in the beginning and 81.5 MB in the end (delta: -8.8 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:22:10,122 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 75.5 MB. Free memory was 37.6 MB in the beginning and 37.5 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:22:10,125 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.43 ms. Allocated memory is still 102.8 MB. Free memory was 72.8 MB in the beginning and 80.8 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:22:10,126 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.87 ms. Allocated memory is still 102.8 MB. Free memory was 80.8 MB in the beginning and 79.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:22:10,132 INFO L168 Benchmark]: Boogie Preprocessor took 37.41 ms. Allocated memory is still 102.8 MB. Free memory was 79.5 MB in the beginning and 78.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:22:10,134 INFO L168 Benchmark]: RCFGBuilder took 340.97 ms. Allocated memory is still 102.8 MB. Free memory was 78.4 MB in the beginning and 67.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:22:10,135 INFO L168 Benchmark]: TraceAbstraction took 390.58 ms. Allocated memory is still 102.8 MB. Free memory was 66.9 MB in the beginning and 54.0 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 01:22:10,137 INFO L168 Benchmark]: Witness Printer took 33.06 ms. Allocated memory is still 102.8 MB. Free memory was 54.0 MB in the beginning and 81.5 MB in the end (delta: -27.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:22:10,142 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 75.5 MB. Free memory was 37.6 MB in the beginning and 37.5 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 308.43 ms. Allocated memory is still 102.8 MB. Free memory was 72.8 MB in the beginning and 80.8 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.87 ms. Allocated memory is still 102.8 MB. Free memory was 80.8 MB in the beginning and 79.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.41 ms. Allocated memory is still 102.8 MB. Free memory was 79.5 MB in the beginning and 78.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 340.97 ms. Allocated memory is still 102.8 MB. Free memory was 78.4 MB in the beginning and 67.2 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 390.58 ms. Allocated memory is still 102.8 MB. Free memory was 66.9 MB in the beginning and 54.0 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 33.06 ms. Allocated memory is still 102.8 MB. Free memory was 54.0 MB in the beginning and 81.5 MB in the end (delta: -27.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftLeft at line 33. Possible FailurePath: [L27] int n = __VERIFIER_nondet_int(); [L28] COND FALSE !(n < 1) [L31] CALL, EXPR hanoi(n) VAL [\old(n)=1] [L19] COND TRUE n == 1 [L20] return 1; VAL [\old(n)=1, \result=1, n=1] [L31] RET, EXPR hanoi(n) [L31] unsigned result = hanoi(n); [L33] COND FALSE !(result+1>0 && result+1 == 1< main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/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 -> 6ccf0fb82c260d93e0a183861fdeec7e448b86af [2020-11-30 01:22:13,629 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:22:13,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:22:13,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:22:13,666 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:22:13,667 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:22:13,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/../../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2020-11-30 01:22:13,739 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/data/fc121c488/0ea7d4f48e5948d48aeda05e9062ac82/FLAG033b8cb5b [2020-11-30 01:22:14,252 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:22:14,253 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2020-11-30 01:22:14,265 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/data/fc121c488/0ea7d4f48e5948d48aeda05e9062ac82/FLAG033b8cb5b [2020-11-30 01:22:14,646 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/data/fc121c488/0ea7d4f48e5948d48aeda05e9062ac82 [2020-11-30 01:22:14,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:22:14,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:22:14,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:22:14,659 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:22:14,663 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:22:14,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:22:14" (1/1) ... [2020-11-30 01:22:14,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@768ed391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:14, skipping insertion in model container [2020-11-30 01:22:14,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:22:14" (1/1) ... [2020-11-30 01:22:14,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:22:14,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:22:14,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:22:14,952 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:22:14,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:22:14,994 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:22:14,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:14 WrapperNode [2020-11-30 01:22:14,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:22:14,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:22:14,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:22:14,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:22:15,005 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:14" (1/1) ... [2020-11-30 01:22:15,016 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:14" (1/1) ... [2020-11-30 01:22:15,036 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:22:15,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:22:15,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:22:15,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:22:15,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:14" (1/1) ... [2020-11-30 01:22:15,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:14" (1/1) ... [2020-11-30 01:22:15,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:14" (1/1) ... [2020-11-30 01:22:15,073 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:14" (1/1) ... [2020-11-30 01:22:15,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:14" (1/1) ... [2020-11-30 01:22:15,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:14" (1/1) ... [2020-11-30 01:22:15,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:14" (1/1) ... [2020-11-30 01:22:15,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:22:15,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:22:15,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:22:15,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:22:15,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:22:15,172 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-11-30 01:22:15,174 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-11-30 01:22:15,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:22:15,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:22:15,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 01:22:15,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:22:15,585 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:22:15,588 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-30 01:22:15,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:22:15 BoogieIcfgContainer [2020-11-30 01:22:15,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:22:15,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:22:15,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:22:15,596 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:22:15,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:22:14" (1/3) ... [2020-11-30 01:22:15,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba68816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:22:15, skipping insertion in model container [2020-11-30 01:22:15,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:22:14" (2/3) ... [2020-11-30 01:22:15,597 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ba68816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:22:15, skipping insertion in model container [2020-11-30 01:22:15,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:22:15" (3/3) ... [2020-11-30 01:22:15,600 INFO L111 eAbstractionObserver]: Analyzing ICFG recHanoi03-1.c [2020-11-30 01:22:15,612 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:22:15,616 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:22:15,629 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:22:15,667 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:22:15,668 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:22:15,668 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:22:15,668 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:22:15,668 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:22:15,668 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:22:15,668 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:22:15,669 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:22:15,686 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-30 01:22:15,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 01:22:15,692 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:22:15,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:22:15,693 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:22:15,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:22:15,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1397741056, now seen corresponding path program 1 times [2020-11-30 01:22:15,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:22:15,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1936660395] [2020-11-30 01:22:15,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 01:22:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:22:15,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:22:15,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:22:16,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:22:16,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:22:16,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:22:16,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1936660395] [2020-11-30 01:22:16,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:22:16,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2020-11-30 01:22:16,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220297982] [2020-11-30 01:22:16,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 01:22:16,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:22:16,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 01:22:16,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-11-30 01:22:16,345 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 11 states. [2020-11-30 01:22:16,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:22:16,637 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2020-11-30 01:22:16,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 01:22:16,641 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 11 [2020-11-30 01:22:16,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:22:16,651 INFO L225 Difference]: With dead ends: 33 [2020-11-30 01:22:16,651 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 01:22:16,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-11-30 01:22:16,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 01:22:16,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 01:22:16,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 01:22:16,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-30 01:22:16,700 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2020-11-30 01:22:16,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:22:16,700 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-30 01:22:16,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 01:22:16,701 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-30 01:22:16,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 01:22:16,703 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:22:16,703 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:22:16,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 01:22:16,919 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:22:16,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:22:16,920 INFO L82 PathProgramCache]: Analyzing trace with hash -588624460, now seen corresponding path program 1 times [2020-11-30 01:22:16,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:22:16,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566612451] [2020-11-30 01:22:16,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 01:22:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:22:17,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 01:22:17,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:22:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 01:22:17,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:22:17,568 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:17,874 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:17,894 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:18,175 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2020-11-30 01:22:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 01:22:18,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566612451] [2020-11-30 01:22:18,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:22:18,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2020-11-30 01:22:18,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266327960] [2020-11-30 01:22:18,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-30 01:22:18,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:22:18,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-30 01:22:18,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-11-30 01:22:18,347 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 17 states. [2020-11-30 01:22:19,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:22:19,026 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-11-30 01:22:19,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-30 01:22:19,030 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 17 [2020-11-30 01:22:19,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:22:19,031 INFO L225 Difference]: With dead ends: 28 [2020-11-30 01:22:19,031 INFO L226 Difference]: Without dead ends: 22 [2020-11-30 01:22:19,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2020-11-30 01:22:19,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-30 01:22:19,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-30 01:22:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-30 01:22:19,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-11-30 01:22:19,041 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2020-11-30 01:22:19,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:22:19,042 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-11-30 01:22:19,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-30 01:22:19,043 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-11-30 01:22:19,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-30 01:22:19,044 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:22:19,045 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:22:19,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 01:22:19,264 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:22:19,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:22:19,265 INFO L82 PathProgramCache]: Analyzing trace with hash 449704308, now seen corresponding path program 2 times [2020-11-30 01:22:19,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:22:19,266 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067139663] [2020-11-30 01:22:19,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 01:22:19,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:22:19,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:22:19,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-30 01:22:19,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:22:19,705 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-30 01:22:19,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:22:20,618 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:20,691 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:20,706 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:21,339 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:21,606 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:21,608 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:21,610 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:21,612 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:21,999 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-30 01:22:21,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067139663] [2020-11-30 01:22:22,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:22:22,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 27 [2020-11-30 01:22:22,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113710030] [2020-11-30 01:22:22,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-30 01:22:22,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:22:22,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-30 01:22:22,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2020-11-30 01:22:22,003 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 27 states. [2020-11-30 01:22:22,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:22:22,922 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-11-30 01:22:22,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-30 01:22:22,923 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 29 [2020-11-30 01:22:22,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:22:22,924 INFO L225 Difference]: With dead ends: 34 [2020-11-30 01:22:22,925 INFO L226 Difference]: Without dead ends: 28 [2020-11-30 01:22:22,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 27 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=198, Invalid=1208, Unknown=0, NotChecked=0, Total=1406 [2020-11-30 01:22:22,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-30 01:22:22,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-30 01:22:22,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 01:22:22,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-11-30 01:22:22,936 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 29 [2020-11-30 01:22:22,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:22:22,937 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-11-30 01:22:22,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-11-30 01:22:22,937 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-11-30 01:22:22,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-30 01:22:22,939 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:22:22,939 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:22:23,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 01:22:23,144 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:22:23,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:22:23,145 INFO L82 PathProgramCache]: Analyzing trace with hash -68266700, now seen corresponding path program 3 times [2020-11-30 01:22:23,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:22:23,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2013248634] [2020-11-30 01:22:23,147 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 01:22:23,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-11-30 01:22:23,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:22:23,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-30 01:22:23,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:22:23,728 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-11-30 01:22:23,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:22:24,693 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:24,770 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:24,771 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:25,477 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:25,478 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:25,484 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:26,112 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:26,115 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:26,121 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:26,644 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:26,646 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:26,649 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:27,186 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:27,199 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:27,202 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:27,666 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-11-30 01:22:27,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2013248634] [2020-11-30 01:22:27,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:22:27,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22] total 38 [2020-11-30 01:22:27,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090276164] [2020-11-30 01:22:27,683 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-11-30 01:22:27,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:22:27,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-11-30 01:22:27,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1273, Unknown=0, NotChecked=0, Total=1406 [2020-11-30 01:22:27,689 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 38 states. [2020-11-30 01:22:29,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:22:29,260 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2020-11-30 01:22:29,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-30 01:22:29,261 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 41 [2020-11-30 01:22:29,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:22:29,262 INFO L225 Difference]: With dead ends: 40 [2020-11-30 01:22:29,263 INFO L226 Difference]: Without dead ends: 34 [2020-11-30 01:22:29,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 36 SyntacticMatches, 8 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=318, Invalid=2438, Unknown=0, NotChecked=0, Total=2756 [2020-11-30 01:22:29,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-30 01:22:29,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-30 01:22:29,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-30 01:22:29,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-11-30 01:22:29,274 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 41 [2020-11-30 01:22:29,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:22:29,274 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-11-30 01:22:29,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-11-30 01:22:29,275 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-11-30 01:22:29,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-30 01:22:29,277 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:22:29,277 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:22:29,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 01:22:29,492 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:22:29,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:22:29,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1838974732, now seen corresponding path program 4 times [2020-11-30 01:22:29,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:22:29,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265522009] [2020-11-30 01:22:29,493 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-30 01:22:29,577 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 01:22:29,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:22:29,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-30 01:22:29,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:22:30,340 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-11-30 01:22:30,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:22:31,539 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:31,539 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:32,347 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:32,347 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:32,352 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:33,037 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:33,063 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:33,065 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:33,671 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:33,673 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:34,245 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:34,247 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:34,248 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:34,249 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:34,887 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:34,888 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:34,890 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:34,891 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:35,231 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2020-11-30 01:22:35,601 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:35,602 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:35,608 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:36,060 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-11-30 01:22:36,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265522009] [2020-11-30 01:22:36,061 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:22:36,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 27] total 50 [2020-11-30 01:22:36,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015550855] [2020-11-30 01:22:36,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-11-30 01:22:36,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:22:36,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-11-30 01:22:36,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=2266, Unknown=0, NotChecked=0, Total=2450 [2020-11-30 01:22:36,064 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 50 states. [2020-11-30 01:22:38,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:22:38,333 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-11-30 01:22:38,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-30 01:22:38,336 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 53 [2020-11-30 01:22:38,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:22:38,337 INFO L225 Difference]: With dead ends: 46 [2020-11-30 01:22:38,337 INFO L226 Difference]: Without dead ends: 40 [2020-11-30 01:22:38,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 45 SyntacticMatches, 11 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=445, Invalid=4247, Unknown=0, NotChecked=0, Total=4692 [2020-11-30 01:22:38,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-30 01:22:38,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-11-30 01:22:38,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-30 01:22:38,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-11-30 01:22:38,350 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 53 [2020-11-30 01:22:38,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:22:38,351 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-11-30 01:22:38,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-11-30 01:22:38,351 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-11-30 01:22:38,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-11-30 01:22:38,354 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:22:38,354 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:22:38,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 01:22:38,564 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:22:38,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:22:38,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1111841972, now seen corresponding path program 5 times [2020-11-30 01:22:38,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:22:38,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476570340] [2020-11-30 01:22:38,566 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-30 01:22:38,683 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2020-11-30 01:22:38,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:22:38,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 44 conjunts are in the unsatisfiable core [2020-11-30 01:22:38,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:22:39,472 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-11-30 01:22:39,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:22:40,938 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:40,939 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:40,942 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:40,943 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:41,941 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:42,010 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:42,010 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:42,728 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:42,729 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:42,731 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:42,732 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:43,510 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:43,510 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:44,466 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:44,473 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:45,218 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:45,220 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:45,221 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:45,893 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:45,905 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:46,599 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:46,600 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:47,252 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:47,254 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:47,255 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:47,256 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:47,787 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-11-30 01:22:47,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476570340] [2020-11-30 01:22:47,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:22:47,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 33] total 58 [2020-11-30 01:22:47,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644014221] [2020-11-30 01:22:47,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-11-30 01:22:47,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:22:47,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-11-30 01:22:47,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=3097, Unknown=0, NotChecked=0, Total=3306 [2020-11-30 01:22:47,791 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 58 states. [2020-11-30 01:22:50,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:22:50,633 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2020-11-30 01:22:50,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-30 01:22:50,634 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 65 [2020-11-30 01:22:50,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:22:50,635 INFO L225 Difference]: With dead ends: 52 [2020-11-30 01:22:50,635 INFO L226 Difference]: Without dead ends: 46 [2020-11-30 01:22:50,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 61 SyntacticMatches, 11 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 1216 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=570, Invalid=5910, Unknown=0, NotChecked=0, Total=6480 [2020-11-30 01:22:50,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-30 01:22:50,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-11-30 01:22:50,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-11-30 01:22:50,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-11-30 01:22:50,645 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 65 [2020-11-30 01:22:50,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:22:50,646 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-11-30 01:22:50,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-11-30 01:22:50,646 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-11-30 01:22:50,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-11-30 01:22:50,649 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:22:50,649 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:22:50,856 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 01:22:50,856 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:22:50,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:22:50,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1101791348, now seen corresponding path program 6 times [2020-11-30 01:22:50,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:22:50,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988455984] [2020-11-30 01:22:50,857 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-30 01:22:51,011 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2020-11-30 01:22:51,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:22:51,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 52 conjunts are in the unsatisfiable core [2020-11-30 01:22:51,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:22:52,191 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-11-30 01:22:52,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:22:53,845 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:53,846 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:53,847 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:53,848 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:54,979 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:54,980 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:55,006 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:55,007 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:56,236 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:56,237 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:56,244 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:56,245 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:57,321 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:57,322 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:57,351 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:58,573 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:58,574 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:58,575 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:58,577 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:59,475 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:59,600 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:59,600 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:22:59,605 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:00,583 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:00,584 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:00,587 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:01,537 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:01,539 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:01,542 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:02,471 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:02,472 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:02,472 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:02,473 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:03,393 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:03,394 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:03,397 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:03,398 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:04,212 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:04,481 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-11-30 01:23:04,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988455984] [2020-11-30 01:23:04,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:23:04,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 39] total 73 [2020-11-30 01:23:04,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337283966] [2020-11-30 01:23:04,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-11-30 01:23:04,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:23:04,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-11-30 01:23:04,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=4975, Unknown=0, NotChecked=0, Total=5256 [2020-11-30 01:23:04,486 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 73 states. [2020-11-30 01:23:08,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:23:08,713 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2020-11-30 01:23:08,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-30 01:23:08,714 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 77 [2020-11-30 01:23:08,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:23:08,716 INFO L225 Difference]: With dead ends: 58 [2020-11-30 01:23:08,716 INFO L226 Difference]: Without dead ends: 52 [2020-11-30 01:23:08,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 67 SyntacticMatches, 14 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 2375 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=765, Invalid=9135, Unknown=0, NotChecked=0, Total=9900 [2020-11-30 01:23:08,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-30 01:23:08,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-11-30 01:23:08,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-30 01:23:08,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2020-11-30 01:23:08,733 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 77 [2020-11-30 01:23:08,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:23:08,734 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2020-11-30 01:23:08,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-11-30 01:23:08,734 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2020-11-30 01:23:08,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-30 01:23:08,736 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:23:08,737 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:23:08,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 01:23:08,940 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:23:08,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:23:08,941 INFO L82 PathProgramCache]: Analyzing trace with hash 414147636, now seen corresponding path program 7 times [2020-11-30 01:23:08,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:23:08,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046961180] [2020-11-30 01:23:08,941 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-30 01:23:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:23:09,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 60 conjunts are in the unsatisfiable core [2020-11-30 01:23:09,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:23:10,647 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-11-30 01:23:10,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:23:12,613 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:12,614 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:12,616 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:12,617 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:13,938 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:13,939 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:15,006 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:15,007 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:15,016 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:15,017 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:16,035 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:16,115 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:16,115 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:16,118 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:17,159 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:17,179 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:17,182 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:18,201 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:18,202 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:18,229 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:18,230 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:19,248 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:19,249 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:19,249 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:19,250 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:20,422 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:20,423 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:20,426 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:20,427 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:21,733 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:21,733 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:21,734 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:21,735 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:22,684 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:22,685 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:22,687 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:22,688 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:23,695 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:23,696 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:23,696 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:23,697 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:24,616 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:24,616 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:24,617 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:24,617 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:25,478 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:25,480 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:26,218 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-11-30 01:23:26,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046961180] [2020-11-30 01:23:26,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:23:26,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 45] total 82 [2020-11-30 01:23:26,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393570589] [2020-11-30 01:23:26,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 82 states [2020-11-30 01:23:26,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:23:26,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants. [2020-11-30 01:23:26,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=313, Invalid=6329, Unknown=0, NotChecked=0, Total=6642 [2020-11-30 01:23:26,222 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 82 states. [2020-11-30 01:23:30,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:23:30,970 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2020-11-30 01:23:30,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-30 01:23:30,970 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 89 [2020-11-30 01:23:30,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:23:30,972 INFO L225 Difference]: With dead ends: 64 [2020-11-30 01:23:30,972 INFO L226 Difference]: Without dead ends: 58 [2020-11-30 01:23:30,977 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 80 SyntacticMatches, 16 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 6 DeprecatedPredicates, 2848 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=930, Invalid=11726, Unknown=0, NotChecked=0, Total=12656 [2020-11-30 01:23:30,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-30 01:23:30,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-11-30 01:23:30,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-11-30 01:23:30,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-11-30 01:23:30,985 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 89 [2020-11-30 01:23:30,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:23:30,986 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-11-30 01:23:30,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 82 states. [2020-11-30 01:23:30,986 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-11-30 01:23:30,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-11-30 01:23:30,988 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:23:30,988 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:23:31,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-30 01:23:31,196 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:23:31,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:23:31,196 INFO L82 PathProgramCache]: Analyzing trace with hash 560433140, now seen corresponding path program 8 times [2020-11-30 01:23:31,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:23:31,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724716694] [2020-11-30 01:23:31,197 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-11-30 01:23:31,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:23:31,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:23:31,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 68 conjunts are in the unsatisfiable core [2020-11-30 01:23:31,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:23:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-11-30 01:23:32,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:23:33,670 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:34,641 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:34,642 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:35,991 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:35,992 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:35,993 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:37,412 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:37,412 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:37,414 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:37,415 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:38,774 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:39,808 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:39,808 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:39,809 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:39,810 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:41,097 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:42,005 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:42,006 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:42,011 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:43,057 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:43,057 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:43,059 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:44,143 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:44,152 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:44,153 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:45,207 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:45,208 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:45,209 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:45,210 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:46,253 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:46,254 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:47,281 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:47,282 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:48,343 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:48,344 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:48,345 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:49,382 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:49,383 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:49,388 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:49,388 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:50,414 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:23:50,761 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-11-30 01:23:50,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724716694] [2020-11-30 01:23:50,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:23:50,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 51] total 91 [2020-11-30 01:23:50,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310749387] [2020-11-30 01:23:50,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-11-30 01:23:50,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:23:50,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-11-30 01:23:50,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=7846, Unknown=0, NotChecked=0, Total=8190 [2020-11-30 01:23:50,767 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 91 states. [2020-11-30 01:23:56,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:23:56,974 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-11-30 01:23:56,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-11-30 01:23:56,975 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 101 [2020-11-30 01:23:56,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:23:56,977 INFO L225 Difference]: With dead ends: 70 [2020-11-30 01:23:56,977 INFO L226 Difference]: Without dead ends: 64 [2020-11-30 01:23:56,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 95 SyntacticMatches, 16 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 5 DeprecatedPredicates, 3183 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=1110, Invalid=14640, Unknown=0, NotChecked=0, Total=15750 [2020-11-30 01:23:56,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-30 01:23:56,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-11-30 01:23:56,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-30 01:23:56,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2020-11-30 01:23:56,989 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 101 [2020-11-30 01:23:56,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:23:56,989 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2020-11-30 01:23:56,989 INFO L482 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-11-30 01:23:56,990 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2020-11-30 01:23:56,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-11-30 01:23:56,992 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:23:56,992 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:23:57,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-30 01:23:57,200 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:23:57,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:23:57,201 INFO L82 PathProgramCache]: Analyzing trace with hash 132934580, now seen corresponding path program 9 times [2020-11-30 01:23:57,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:23:57,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056713756] [2020-11-30 01:23:57,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-30 01:23:57,482 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2020-11-30 01:23:57,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:23:57,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 76 conjunts are in the unsatisfiable core [2020-11-30 01:23:57,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:23:59,377 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-11-30 01:23:59,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:24:01,748 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:01,750 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:03,371 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:03,373 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:03,374 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:04,848 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:04,851 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:06,285 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:06,285 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:07,330 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:07,331 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:07,333 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:08,800 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:08,802 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:08,803 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:10,257 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:10,257 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:10,260 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:10,261 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:11,516 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:11,517 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:11,519 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:12,765 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:12,766 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:12,789 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:14,184 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:14,185 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:14,189 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:15,554 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:15,555 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:15,557 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:15,557 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:16,657 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:16,797 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:16,798 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:18,029 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:18,030 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:19,232 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:19,233 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:20,363 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:20,533 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:20,534 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:20,535 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:21,768 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:21,768 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:21,771 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:23,035 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:23,038 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:24,009 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 731 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-11-30 01:24:24,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056713756] [2020-11-30 01:24:24,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:24:24,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 57] total 104 [2020-11-30 01:24:24,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645724279] [2020-11-30 01:24:24,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 104 states [2020-11-30 01:24:24,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:24:24,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2020-11-30 01:24:24,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=10310, Unknown=0, NotChecked=0, Total=10712 [2020-11-30 01:24:24,013 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand 104 states. [2020-11-30 01:24:30,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:24:30,849 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2020-11-30 01:24:30,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-11-30 01:24:30,850 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 113 [2020-11-30 01:24:30,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:24:30,852 INFO L225 Difference]: With dead ends: 76 [2020-11-30 01:24:30,852 INFO L226 Difference]: Without dead ends: 70 [2020-11-30 01:24:30,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 100 SyntacticMatches, 22 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 8 DeprecatedPredicates, 4704 ImplicationChecksByTransitivity, 21.2s TimeCoverageRelationStatistics Valid=1337, Invalid=18969, Unknown=0, NotChecked=0, Total=20306 [2020-11-30 01:24:30,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-30 01:24:30,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-11-30 01:24:30,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-30 01:24:30,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-11-30 01:24:30,868 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 113 [2020-11-30 01:24:30,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:24:30,868 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-11-30 01:24:30,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 104 states. [2020-11-30 01:24:30,868 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-11-30 01:24:30,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-11-30 01:24:30,869 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:24:30,870 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:24:31,070 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-30 01:24:31,071 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:24:31,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:24:31,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1247154036, now seen corresponding path program 10 times [2020-11-30 01:24:31,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:24:31,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817277307] [2020-11-30 01:24:31,071 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-11-30 01:24:31,330 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 01:24:31,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:24:31,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 84 conjunts are in the unsatisfiable core [2020-11-30 01:24:31,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:24:33,648 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-11-30 01:24:33,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:24:36,499 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:36,500 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:38,321 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:38,323 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:39,630 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:39,718 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:39,719 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:41,093 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:41,094 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:41,094 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:41,095 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:42,329 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:42,430 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:42,431 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:42,432 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:43,751 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:43,851 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:43,852 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:45,121 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:45,121 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:45,126 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:46,448 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:46,449 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:46,451 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:46,451 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:47,986 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:47,987 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:48,908 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:48,909 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:48,910 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:50,150 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:50,151 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:50,152 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:50,152 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:51,427 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:51,429 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:51,431 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:52,613 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:52,614 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:54,003 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:54,003 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:54,005 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:55,333 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:55,334 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:55,334 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:55,335 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:56,472 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:56,473 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:56,474 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:57,584 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:57,585 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:57,590 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:58,631 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:58,631 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:58,633 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:59,747 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:59,747 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:59,748 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:24:59,748 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:00,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2020-11-30 01:25:00,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817277307] [2020-11-30 01:25:00,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:25:00,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 63] total 114 [2020-11-30 01:25:00,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493588768] [2020-11-30 01:25:00,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 114 states [2020-11-30 01:25:00,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:25:00,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2020-11-30 01:25:00,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=440, Invalid=12442, Unknown=0, NotChecked=0, Total=12882 [2020-11-30 01:25:00,695 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 114 states. [2020-11-30 01:25:08,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:25:08,178 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2020-11-30 01:25:08,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-11-30 01:25:08,179 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 125 [2020-11-30 01:25:08,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:25:08,181 INFO L225 Difference]: With dead ends: 82 [2020-11-30 01:25:08,181 INFO L226 Difference]: Without dead ends: 76 [2020-11-30 01:25:08,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 111 SyntacticMatches, 25 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 8 DeprecatedPredicates, 5507 ImplicationChecksByTransitivity, 23.0s TimeCoverageRelationStatistics Valid=1557, Invalid=22935, Unknown=0, NotChecked=0, Total=24492 [2020-11-30 01:25:08,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-30 01:25:08,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-11-30 01:25:08,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-30 01:25:08,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2020-11-30 01:25:08,191 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 125 [2020-11-30 01:25:08,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:25:08,192 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2020-11-30 01:25:08,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 114 states. [2020-11-30 01:25:08,192 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2020-11-30 01:25:08,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-11-30 01:25:08,194 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:25:08,195 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:25:08,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-11-30 01:25:08,416 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:25:08,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:08,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1195609292, now seen corresponding path program 11 times [2020-11-30 01:25:08,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:25:08,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110123950] [2020-11-30 01:25:08,417 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-11-30 01:25:08,765 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2020-11-30 01:25:08,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:25:08,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 92 conjunts are in the unsatisfiable core [2020-11-30 01:25:08,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:25:11,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-11-30 01:25:11,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:25:14,308 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:14,308 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:14,309 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:14,310 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:15,837 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:15,927 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:15,929 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:15,931 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:17,581 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:17,581 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:17,584 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:19,045 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:19,144 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:19,145 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:20,514 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:20,616 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:20,617 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:21,712 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:21,831 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:21,832 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:21,832 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:21,832 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:23,297 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:23,298 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:23,299 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:23,300 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:24,619 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:24,730 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:25,707 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:25,708 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:26,995 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:26,995 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:26,997 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:28,306 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:28,307 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:29,676 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:29,676 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:29,677 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:29,677 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:31,055 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:32,007 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:32,008 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:33,272 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:33,273 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:33,273 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:34,539 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:34,539 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:34,541 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:34,542 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:35,792 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:36,725 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:36,725 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:36,727 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:36,727 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:37,910 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:37,911 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:37,913 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:37,913 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:39,015 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:39,017 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:40,154 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:40,154 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:40,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 1113 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2020-11-30 01:25:40,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110123950] [2020-11-30 01:25:40,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:25:40,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 69] total 124 [2020-11-30 01:25:40,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98764669] [2020-11-30 01:25:40,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 124 states [2020-11-30 01:25:40,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:25:40,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2020-11-30 01:25:40,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=14773, Unknown=0, NotChecked=0, Total=15252 [2020-11-30 01:25:40,611 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 124 states. [2020-11-30 01:25:49,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:25:49,626 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions. [2020-11-30 01:25:49,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-11-30 01:25:49,626 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 137 [2020-11-30 01:25:49,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:25:49,628 INFO L225 Difference]: With dead ends: 88 [2020-11-30 01:25:49,628 INFO L226 Difference]: Without dead ends: 82 [2020-11-30 01:25:49,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 128 SyntacticMatches, 22 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 8 DeprecatedPredicates, 6236 ImplicationChecksByTransitivity, 24.7s TimeCoverageRelationStatistics Valid=1794, Invalid=27276, Unknown=0, NotChecked=0, Total=29070 [2020-11-30 01:25:49,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-11-30 01:25:49,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-11-30 01:25:49,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-11-30 01:25:49,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2020-11-30 01:25:49,638 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 137 [2020-11-30 01:25:49,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:25:49,638 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2020-11-30 01:25:49,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 124 states. [2020-11-30 01:25:49,638 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2020-11-30 01:25:49,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-11-30 01:25:49,641 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:25:49,641 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:25:49,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-11-30 01:25:49,852 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:25:49,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:25:49,852 INFO L82 PathProgramCache]: Analyzing trace with hash -180906252, now seen corresponding path program 12 times [2020-11-30 01:25:49,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:25:49,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863568255] [2020-11-30 01:25:49,853 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-11-30 01:25:50,265 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2020-11-30 01:25:50,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:25:50,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 100 conjunts are in the unsatisfiable core [2020-11-30 01:25:50,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:25:53,245 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2020-11-30 01:25:53,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:25:56,080 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:56,080 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:57,581 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:57,582 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:58,869 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:58,972 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:58,973 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:25:58,974 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:00,657 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:00,659 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:02,240 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:02,354 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:02,355 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:02,356 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:03,948 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:04,074 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:04,076 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:05,727 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:06,946 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:06,946 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:06,948 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:06,948 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:08,354 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:08,483 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:08,483 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:08,484 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:09,982 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:09,984 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:11,498 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:11,500 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:13,023 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:13,023 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:13,024 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:13,024 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:14,507 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:14,508 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:15,932 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:15,933 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:17,367 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:17,367 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:17,369 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:17,369 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:18,742 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:18,743 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:18,745 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:20,170 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:20,170 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:20,171 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:21,522 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:21,523 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:21,524 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:22,866 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:22,867 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:22,867 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:22,868 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:24,211 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:24,212 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:25,040 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:25,041 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:26,338 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:26,339 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:27,595 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:27,595 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:27,597 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:27,598 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:28,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 1334 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-11-30 01:26:28,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863568255] [2020-11-30 01:26:28,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:26:28,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 75] total 138 [2020-11-30 01:26:28,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294154748] [2020-11-30 01:26:28,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 138 states [2020-11-30 01:26:28,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:26:28,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants. [2020-11-30 01:26:28,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=545, Invalid=18361, Unknown=0, NotChecked=0, Total=18906 [2020-11-30 01:26:28,599 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand 138 states. [2020-11-30 01:26:38,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:26:38,733 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2020-11-30 01:26:38,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-11-30 01:26:38,733 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 149 [2020-11-30 01:26:38,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:26:38,734 INFO L225 Difference]: With dead ends: 94 [2020-11-30 01:26:38,734 INFO L226 Difference]: Without dead ends: 88 [2020-11-30 01:26:38,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 135 SyntacticMatches, 25 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 12 DeprecatedPredicates, 8460 ImplicationChecksByTransitivity, 29.7s TimeCoverageRelationStatistics Valid=2078, Invalid=33454, Unknown=0, NotChecked=0, Total=35532 [2020-11-30 01:26:38,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-11-30 01:26:38,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-11-30 01:26:38,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-30 01:26:38,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2020-11-30 01:26:38,743 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 149 [2020-11-30 01:26:38,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:26:38,744 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2020-11-30 01:26:38,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 138 states. [2020-11-30 01:26:38,744 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2020-11-30 01:26:38,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-11-30 01:26:38,746 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:26:38,747 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:26:38,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-11-30 01:26:38,962 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:26:38,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:26:38,962 INFO L82 PathProgramCache]: Analyzing trace with hash -203457868, now seen corresponding path program 13 times [2020-11-30 01:26:38,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:26:38,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286236077] [2020-11-30 01:26:38,963 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-11-30 01:26:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:26:39,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 108 conjunts are in the unsatisfiable core [2020-11-30 01:26:39,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:26:42,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-11-30 01:26:42,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:26:44,923 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:45,047 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:45,048 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:46,643 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:46,643 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:46,644 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:46,644 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:48,502 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:48,502 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:48,503 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:48,503 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:50,300 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:50,301 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:51,886 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:51,999 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:51,999 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:52,000 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:52,000 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:53,700 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:53,702 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:53,702 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:55,373 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:55,374 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:55,375 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:56,887 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:57,011 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:57,012 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:57,012 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:57,013 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:58,638 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:26:58,639 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:00,108 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:00,240 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:00,241 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:01,648 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:01,784 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:01,785 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:01,786 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:03,159 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:03,297 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:03,298 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:03,298 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:03,299 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:04,776 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:04,777 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:04,777 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:04,778 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:06,327 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:06,328 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:06,329 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:06,330 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:07,837 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:07,838 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:07,839 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:09,334 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:09,335 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:09,336 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:09,337 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:10,805 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:10,807 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:12,262 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:12,263 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:12,264 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:13,699 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:13,700 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:13,701 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:13,701 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:15,128 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:15,129 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:15,133 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:16,540 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:16,540 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:17,422 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:17,423 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:17,425 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:18,761 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:18,761 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:18,762 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:18,763 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:20,062 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:20,063 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:20,063 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:20,064 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:21,378 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:21,379 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:21,379 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:21,380 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 0 proven. 1575 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2020-11-30 01:27:22,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286236077] [2020-11-30 01:27:22,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:27:22,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 82] total 143 [2020-11-30 01:27:22,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217581190] [2020-11-30 01:27:22,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 143 states [2020-11-30 01:27:22,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:27:22,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 143 interpolants. [2020-11-30 01:27:22,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=548, Invalid=19758, Unknown=0, NotChecked=0, Total=20306 [2020-11-30 01:27:22,680 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 143 states. [2020-11-30 01:27:34,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:27:34,052 INFO L93 Difference]: Finished difference Result 100 states and 102 transitions. [2020-11-30 01:27:34,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-11-30 01:27:34,053 INFO L78 Accepts]: Start accepts. Automaton has 143 states. Word has length 161 [2020-11-30 01:27:34,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:27:34,055 INFO L225 Difference]: With dead ends: 100 [2020-11-30 01:27:34,055 INFO L226 Difference]: Without dead ends: 94 [2020-11-30 01:27:34,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 149 SyntacticMatches, 30 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 7830 ImplicationChecksByTransitivity, 33.7s TimeCoverageRelationStatistics Valid=2358, Invalid=36648, Unknown=0, NotChecked=0, Total=39006 [2020-11-30 01:27:34,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-11-30 01:27:34,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-11-30 01:27:34,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-11-30 01:27:34,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2020-11-30 01:27:34,064 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 161 [2020-11-30 01:27:34,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:27:34,065 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2020-11-30 01:27:34,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 143 states. [2020-11-30 01:27:34,065 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2020-11-30 01:27:34,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-11-30 01:27:34,067 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:27:34,067 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:27:34,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-11-30 01:27:34,285 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:27:34,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:27:34,285 INFO L82 PathProgramCache]: Analyzing trace with hash 2060197492, now seen corresponding path program 14 times [2020-11-30 01:27:34,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:27:34,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1905248894] [2020-11-30 01:27:34,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-11-30 01:27:34,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 01:27:34,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:27:34,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 116 conjunts are in the unsatisfiable core [2020-11-30 01:27:34,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:27:38,456 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2020-11-30 01:27:38,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:27:40,335 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:42,233 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:42,234 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:44,013 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:44,128 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:44,128 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:44,130 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:46,238 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:46,238 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:46,240 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:48,315 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:48,316 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:48,316 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:48,317 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:50,349 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:50,350 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:52,296 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:52,297 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:52,299 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:54,211 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:54,211 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:54,212 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:54,213 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:56,147 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:56,148 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:56,149 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:58,053 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:58,055 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:58,056 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:59,787 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:59,939 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:59,940 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:27:59,940 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:01,677 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:01,836 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:01,837 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:01,837 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:01,838 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:04,023 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:04,023 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:04,024 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:05,929 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:05,929 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:05,931 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:07,522 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:07,692 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:07,693 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:07,694 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:09,438 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:09,438 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:10,709 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:10,710 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:12,390 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:12,391 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:14,080 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:14,080 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:14,082 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:14,082 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:15,773 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:15,775 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:15,776 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:17,424 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:17,425 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:17,427 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:19,061 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:19,063 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:19,064 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:20,724 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:20,724 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:20,731 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:20,732 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:22,322 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:22,322 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:22,324 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:23,878 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:24,897 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:24,898 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:24,898 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:24,898 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:26,366 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:26,366 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:26,368 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:27,869 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:27,870 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:27,871 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:29,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 0 proven. 1836 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2020-11-30 01:28:29,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1905248894] [2020-11-30 01:28:29,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:28:29,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 87] total 155 [2020-11-30 01:28:29,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874139921] [2020-11-30 01:28:29,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 155 states [2020-11-30 01:28:29,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:28:29,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2020-11-30 01:28:29,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=600, Invalid=23270, Unknown=0, NotChecked=0, Total=23870 [2020-11-30 01:28:29,116 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand 155 states. [2020-11-30 01:28:42,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:28:42,432 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2020-11-30 01:28:42,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-11-30 01:28:42,432 INFO L78 Accepts]: Start accepts. Automaton has 155 states. Word has length 173 [2020-11-30 01:28:42,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:28:42,434 INFO L225 Difference]: With dead ends: 106 [2020-11-30 01:28:42,434 INFO L226 Difference]: Without dead ends: 100 [2020-11-30 01:28:42,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 157 SyntacticMatches, 34 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 9 DeprecatedPredicates, 9810 ImplicationChecksByTransitivity, 41.8s TimeCoverageRelationStatistics Valid=2606, Invalid=42976, Unknown=0, NotChecked=0, Total=45582 [2020-11-30 01:28:42,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-11-30 01:28:42,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-11-30 01:28:42,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-30 01:28:42,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2020-11-30 01:28:42,444 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 173 [2020-11-30 01:28:42,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:28:42,445 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2020-11-30 01:28:42,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 155 states. [2020-11-30 01:28:42,445 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2020-11-30 01:28:42,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-11-30 01:28:42,447 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:28:42,447 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:28:42,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-11-30 01:28:42,655 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:28:42,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:28:42,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1575648716, now seen corresponding path program 15 times [2020-11-30 01:28:42,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:28:42,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862339290] [2020-11-30 01:28:42,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2020-11-30 01:28:43,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2020-11-30 01:28:43,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 01:28:43,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 124 conjunts are in the unsatisfiable core [2020-11-30 01:28:43,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:28:47,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2552 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2020-11-30 01:28:47,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:28:49,348 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:51,235 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:51,236 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:53,475 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:53,475 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:53,477 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:55,612 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:55,613 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:55,614 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:55,614 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:57,590 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:57,720 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:57,720 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:57,721 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:57,721 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:59,650 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:59,786 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:59,786 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:59,788 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:28:59,788 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:01,888 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:01,888 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:01,890 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:03,932 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:03,932 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:03,937 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:03,938 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:05,952 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:05,952 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:07,328 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:07,476 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:07,476 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:07,477 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:09,478 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:09,479 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:09,481 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:09,481 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:11,397 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:11,398 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:11,400 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:13,417 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:13,418 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:13,419 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:15,232 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:15,233 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:15,234 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:17,021 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:17,022 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:17,023 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:17,023 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:18,922 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:18,922 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:18,923 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:18,924 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:20,832 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:20,833 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:20,833 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:20,834 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:22,655 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:22,656 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:24,457 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:24,457 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:25,715 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:25,716 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:26,917 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:26,917 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:26,919 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:28,668 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:28,669 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:28,669 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:28,670 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:30,448 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:30,449 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:31,572 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:31,573 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:31,574 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:33,258 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:33,259 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:34,319 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:34,320 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:34,321 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:34,322 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:36,080 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:36,081 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:36,082 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:36,082 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:37,646 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:37,646 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:37,648 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:37,648 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:39,130 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:39,131 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:40,655 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:40,656 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 01:29:42,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2552 backedges. 0 proven. 2117 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2020-11-30 01:29:42,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862339290] [2020-11-30 01:29:42,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 01:29:42,007 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 93] total 167 [2020-11-30 01:29:42,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098142443] [2020-11-30 01:29:42,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 167 states [2020-11-30 01:29:42,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 01:29:42,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 167 interpolants. [2020-11-30 01:29:42,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=652, Invalid=27070, Unknown=0, NotChecked=0, Total=27722 [2020-11-30 01:29:42,010 INFO L87 Difference]: Start difference. First operand 100 states and 101 transitions. Second operand 167 states. [2020-11-30 01:29:57,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:29:57,251 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2020-11-30 01:29:57,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-11-30 01:29:57,251 INFO L78 Accepts]: Start accepts. Automaton has 167 states. Word has length 185 [2020-11-30 01:29:57,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:29:57,253 INFO L225 Difference]: With dead ends: 112 [2020-11-30 01:29:57,253 INFO L226 Difference]: Without dead ends: 106 [2020-11-30 01:29:57,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 170 SyntacticMatches, 33 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 11 DeprecatedPredicates, 11361 ImplicationChecksByTransitivity, 45.2s TimeCoverageRelationStatistics Valid=2922, Invalid=49748, Unknown=0, NotChecked=0, Total=52670 [2020-11-30 01:29:57,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-30 01:29:57,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2020-11-30 01:29:57,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-11-30 01:29:57,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 107 transitions. [2020-11-30 01:29:57,272 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 107 transitions. Word has length 185 [2020-11-30 01:29:57,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:29:57,273 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 107 transitions. [2020-11-30 01:29:57,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 167 states. [2020-11-30 01:29:57,273 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 107 transitions. [2020-11-30 01:29:57,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-11-30 01:29:57,275 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:29:57,275 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:29:57,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-11-30 01:29:57,488 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:29:57,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:29:57,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1406379508, now seen corresponding path program 16 times [2020-11-30 01:29:57,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 01:29:57,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220418919] [2020-11-30 01:29:57,489 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2020-11-30 01:29:58,139 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-30 01:29:58,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-11-30 01:29:58,139 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:29:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:29:58,253 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:29:58,465 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 01:29:58,465 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:29:58,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2020-11-30 01:29:58,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:29:58 BoogieIcfgContainer [2020-11-30 01:29:58,816 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:29:58,817 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:29:58,817 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:29:58,817 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:29:58,818 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:22:15" (3/4) ... [2020-11-30 01:29:58,820 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:29:58,934 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_7c63a2b2-185d-4f14-9380-cc2970f75f5b/bin/uautomizer/witness.graphml [2020-11-30 01:29:58,934 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:29:58,935 INFO L168 Benchmark]: Toolchain (without parser) took 464282.72 ms. Allocated memory was 88.1 MB in the beginning and 243.3 MB in the end (delta: 155.2 MB). Free memory was 55.0 MB in the beginning and 81.4 MB in the end (delta: -26.4 MB). Peak memory consumption was 129.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:29:58,936 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 88.1 MB. Free memory was 71.4 MB in the beginning and 71.3 MB in the end (delta: 65.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:29:58,936 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.36 ms. Allocated memory is still 88.1 MB. Free memory was 54.8 MB in the beginning and 68.1 MB in the end (delta: -13.3 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:29:58,937 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.98 ms. Allocated memory is still 88.1 MB. Free memory was 68.1 MB in the beginning and 66.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:29:58,937 INFO L168 Benchmark]: Boogie Preprocessor took 63.39 ms. Allocated memory is still 88.1 MB. Free memory was 66.7 MB in the beginning and 73.4 MB in the end (delta: -6.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:29:58,937 INFO L168 Benchmark]: RCFGBuilder took 488.62 ms. Allocated memory is still 88.1 MB. Free memory was 73.2 MB in the beginning and 61.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:29:58,938 INFO L168 Benchmark]: TraceAbstraction took 463224.33 ms. Allocated memory was 88.1 MB in the beginning and 243.3 MB in the end (delta: 155.2 MB). Free memory was 61.1 MB in the beginning and 89.8 MB in the end (delta: -28.7 MB). Peak memory consumption was 127.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:29:58,938 INFO L168 Benchmark]: Witness Printer took 117.20 ms. Allocated memory is still 243.3 MB. Free memory was 89.8 MB in the beginning and 81.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:29:58,940 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 88.1 MB. Free memory was 71.4 MB in the beginning and 71.3 MB in the end (delta: 65.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 337.36 ms. Allocated memory is still 88.1 MB. Free memory was 54.8 MB in the beginning and 68.1 MB in the end (delta: -13.3 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.98 ms. Allocated memory is still 88.1 MB. Free memory was 68.1 MB in the beginning and 66.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.39 ms. Allocated memory is still 88.1 MB. Free memory was 66.7 MB in the beginning and 73.4 MB in the end (delta: -6.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 488.62 ms. Allocated memory is still 88.1 MB. Free memory was 73.2 MB in the beginning and 61.5 MB in the end (delta: 11.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 463224.33 ms. Allocated memory was 88.1 MB in the beginning and 243.3 MB in the end (delta: 155.2 MB). Free memory was 61.1 MB in the beginning and 89.8 MB in the end (delta: -28.7 MB). Peak memory consumption was 127.0 MB. Max. memory is 16.1 GB. * Witness Printer took 117.20 ms. Allocated memory is still 243.3 MB. Free memory was 89.8 MB in the beginning and 81.4 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L27] int n = __VERIFIER_nondet_int(); [L28] COND FALSE !(n < 1) [L31] CALL, EXPR hanoi(n) VAL [\old(n)=32] [L19] COND FALSE !(n == 1) VAL [\old(n)=32, n=32] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=31] [L19] COND FALSE !(n == 1) VAL [\old(n)=31, n=31] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=30] [L19] COND FALSE !(n == 1) VAL [\old(n)=30, n=30] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=29] [L19] COND FALSE !(n == 1) VAL [\old(n)=29, n=29] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=28] [L19] COND FALSE !(n == 1) VAL [\old(n)=28, n=28] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=27] [L19] COND FALSE !(n == 1) VAL [\old(n)=27, n=27] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=26] [L19] COND FALSE !(n == 1) VAL [\old(n)=26, n=26] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=25] [L19] COND FALSE !(n == 1) VAL [\old(n)=25, n=25] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=24] [L19] COND FALSE !(n == 1) VAL [\old(n)=24, n=24] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=23] [L19] COND FALSE !(n == 1) VAL [\old(n)=23, n=23] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=22] [L19] COND FALSE !(n == 1) VAL [\old(n)=22, n=22] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=21] [L19] COND FALSE !(n == 1) VAL [\old(n)=21, n=21] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=20] [L19] COND FALSE !(n == 1) VAL [\old(n)=20, n=20] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=19] [L19] COND FALSE !(n == 1) VAL [\old(n)=19, n=19] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=18] [L19] COND FALSE !(n == 1) VAL [\old(n)=18, n=18] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=17] [L19] COND FALSE !(n == 1) VAL [\old(n)=17, n=17] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=16] [L19] COND FALSE !(n == 1) VAL [\old(n)=16, n=16] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=15] [L19] COND FALSE !(n == 1) VAL [\old(n)=15, n=15] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=14] [L19] COND FALSE !(n == 1) VAL [\old(n)=14, n=14] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=13] [L19] COND FALSE !(n == 1) VAL [\old(n)=13, n=13] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=12] [L19] COND FALSE !(n == 1) VAL [\old(n)=12, n=12] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=11] [L19] COND FALSE !(n == 1) VAL [\old(n)=11, n=11] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=10] [L19] COND FALSE !(n == 1) VAL [\old(n)=10, n=10] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=9] [L19] COND FALSE !(n == 1) VAL [\old(n)=9, n=9] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=8] [L19] COND FALSE !(n == 1) VAL [\old(n)=8, n=8] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=7] [L19] COND FALSE !(n == 1) VAL [\old(n)=7, n=7] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=6] [L19] COND FALSE !(n == 1) VAL [\old(n)=6, n=6] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=5] [L19] COND FALSE !(n == 1) VAL [\old(n)=5, n=5] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=4] [L19] COND FALSE !(n == 1) VAL [\old(n)=4, n=4] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=3] [L19] COND FALSE !(n == 1) VAL [\old(n)=3, n=3] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=2] [L19] COND FALSE !(n == 1) VAL [\old(n)=2, n=2] [L22] CALL, EXPR hanoi(n-1) VAL [\old(n)=1] [L19] COND TRUE n == 1 [L20] return 1; VAL [\old(n)=1, \result=1, n=1] [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=2, hanoi(n-1)=1, n=2] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=3, hanoi(n-1)=3, n=3] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=4, hanoi(n-1)=7, n=4] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=5, hanoi(n-1)=15, n=5] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=6, hanoi(n-1)=31, n=6] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=7, hanoi(n-1)=63, n=7] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=8, hanoi(n-1)=127, n=8] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=9, hanoi(n-1)=255, n=9] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=10, hanoi(n-1)=511, n=10] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=11, hanoi(n-1)=1023, n=11] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=12, hanoi(n-1)=2047, n=12] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=13, hanoi(n-1)=4095, n=13] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=14, hanoi(n-1)=8191, n=14] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=15, hanoi(n-1)=16383, n=15] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=16, hanoi(n-1)=32767, n=16] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=17, hanoi(n-1)=65535, n=17] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=18, hanoi(n-1)=131071, n=18] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=19, hanoi(n-1)=262143, n=19] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=20, hanoi(n-1)=524287, n=20] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=21, hanoi(n-1)=1048575, n=21] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=22, hanoi(n-1)=2097151, n=22] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=23, hanoi(n-1)=4194303, n=23] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=24, hanoi(n-1)=8388607, n=24] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=25, hanoi(n-1)=16777215, n=25] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=26, hanoi(n-1)=33554431, n=26] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=27, hanoi(n-1)=67108863, n=27] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=28, hanoi(n-1)=134217727, n=28] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=29, hanoi(n-1)=268435455, n=29] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=30, hanoi(n-1)=536870911, n=30] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=31, hanoi(n-1)=1073741823, n=31] [L22] return 2 * (hanoi(n-1)) + 1; [L22] RET, EXPR hanoi(n-1) VAL [\old(n)=32, hanoi(n-1)=2147483647, n=32] [L22] return 2 * (hanoi(n-1)) + 1; [L31] RET, EXPR hanoi(n) [L31] unsigned result = hanoi(n); [L33] COND FALSE !(result+1>0 && result+1 == 1<