./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/locks/test_locks_12.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9220afc3-a856-4a00-9460-754b78538873/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9220afc3-a856-4a00-9460-754b78538873/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9220afc3-a856-4a00-9460-754b78538873/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9220afc3-a856-4a00-9460-754b78538873/bin/uautomizer/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/locks/test_locks_12.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9220afc3-a856-4a00-9460-754b78538873/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9220afc3-a856-4a00-9460-754b78538873/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fbb7e06bf350f46f725ea0ddc5d1215829061b3a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:55:42,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:55:42,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:55:42,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:55:42,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:55:42,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:55:42,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:55:42,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:55:42,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:55:42,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:55:42,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:55:42,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:55:42,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:55:42,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:55:42,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:55:42,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:55:42,756 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:55:42,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:55:42,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:55:42,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:55:42,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:55:42,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:55:42,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:55:42,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:55:42,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:55:42,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:55:42,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:55:42,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:55:42,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:55:42,792 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:55:42,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:55:42,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:55:42,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:55:42,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:55:42,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:55:42,799 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:55:42,800 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:55:42,800 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:55:42,800 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:55:42,801 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:55:42,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:55:42,806 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9220afc3-a856-4a00-9460-754b78538873/bin/uautomizer/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-11-29 23:55:42,844 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:55:42,844 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:55:42,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:55:42,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:55:42,846 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:55:42,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:55:42,847 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:55:42,847 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 23:55:42,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:55:42,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:55:42,849 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:55:42,849 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-11-29 23:55:42,849 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-11-29 23:55:42,849 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-11-29 23:55:42,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:55:42,850 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-29 23:55:42,850 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:55:42,850 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:55:42,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:55:42,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:55:42,851 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:55:42,851 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:55:42,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:55:42,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:55:42,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:55:42,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:55:42,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:55:42,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:55:42,853 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_9220afc3-a856-4a00-9460-754b78538873/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9220afc3-a856-4a00-9460-754b78538873/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbb7e06bf350f46f725ea0ddc5d1215829061b3a [2020-11-29 23:55:43,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:55:43,205 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:55:43,210 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:55:43,211 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:55:43,212 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:55:43,213 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9220afc3-a856-4a00-9460-754b78538873/bin/uautomizer/../../sv-benchmarks/c/locks/test_locks_12.c [2020-11-29 23:55:43,298 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9220afc3-a856-4a00-9460-754b78538873/bin/uautomizer/data/5851fa584/7a5c58c4b3fa4ca5a558b77d50588790/FLAGac11f53b2 [2020-11-29 23:55:43,800 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:55:43,804 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9220afc3-a856-4a00-9460-754b78538873/sv-benchmarks/c/locks/test_locks_12.c [2020-11-29 23:55:43,820 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9220afc3-a856-4a00-9460-754b78538873/bin/uautomizer/data/5851fa584/7a5c58c4b3fa4ca5a558b77d50588790/FLAGac11f53b2 [2020-11-29 23:55:44,152 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9220afc3-a856-4a00-9460-754b78538873/bin/uautomizer/data/5851fa584/7a5c58c4b3fa4ca5a558b77d50588790 [2020-11-29 23:55:44,155 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:55:44,157 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-29 23:55:44,162 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:55:44,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:55:44,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:55:44,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:55:44" (1/1) ... [2020-11-29 23:55:44,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6051969d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:44, skipping insertion in model container [2020-11-29 23:55:44,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:55:44" (1/1) ... [2020-11-29 23:55:44,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:55:44,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:55:44,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:55:44,451 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:55:44,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:55:44,525 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:55:44,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:44 WrapperNode [2020-11-29 23:55:44,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:55:44,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:55:44,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:55:44,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:55:44,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:44" (1/1) ... [2020-11-29 23:55:44,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:44" (1/1) ... [2020-11-29 23:55:44,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:44" (1/1) ... [2020-11-29 23:55:44,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:44" (1/1) ... [2020-11-29 23:55:44,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:44" (1/1) ... [2020-11-29 23:55:44,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:44" (1/1) ... [2020-11-29 23:55:44,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:44" (1/1) ... [2020-11-29 23:55:44,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:55:44,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:55:44,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:55:44,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:55:44,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9220afc3-a856-4a00-9460-754b78538873/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:55:44,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-29 23:55:44,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:55:44,686 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-29 23:55:44,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-29 23:55:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-29 23:55:44,687 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-29 23:55:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-29 23:55:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:55:44,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-29 23:55:44,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-29 23:55:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-29 23:55:44,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:55:44,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:55:44,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:55:44,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 23:55:44,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:55:45,325 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:55:45,325 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-29 23:55:45,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:55:45 BoogieIcfgContainer [2020-11-29 23:55:45,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:55:45,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:55:45,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:55:45,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:55:45,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:55:44" (1/3) ... [2020-11-29 23:55:45,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315aa44b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:55:45, skipping insertion in model container [2020-11-29 23:55:45,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:55:44" (2/3) ... [2020-11-29 23:55:45,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315aa44b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:55:45, skipping insertion in model container [2020-11-29 23:55:45,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:55:45" (3/3) ... [2020-11-29 23:55:45,338 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_12.c [2020-11-29 23:55:45,350 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:55:45,356 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-29 23:55:45,369 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-29 23:55:45,404 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:55:45,404 INFO L378 AbstractCegarLoop]: Hoare is false [2020-11-29 23:55:45,404 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:55:45,404 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:55:45,404 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:55:45,404 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:55:45,405 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:55:45,405 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:55:45,427 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-11-29 23:55:45,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 23:55:45,438 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:45,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:45,440 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:45,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:45,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1172154548, now seen corresponding path program 1 times [2020-11-29 23:55:45,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:45,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196200000] [2020-11-29 23:55:45,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:45,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:45,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:45,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:45,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196200000] [2020-11-29 23:55:45,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:45,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:55:45,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991109774] [2020-11-29 23:55:45,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:55:45,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:45,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:55:45,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:55:45,775 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 3 states. [2020-11-29 23:55:45,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:45,830 INFO L93 Difference]: Finished difference Result 52 states and 87 transitions. [2020-11-29 23:55:45,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:55:45,833 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-29 23:55:45,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:45,853 INFO L225 Difference]: With dead ends: 52 [2020-11-29 23:55:45,853 INFO L226 Difference]: Without dead ends: 47 [2020-11-29 23:55:45,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:55:45,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-29 23:55:45,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-29 23:55:45,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 23:55:45,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 82 transitions. [2020-11-29 23:55:45,907 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 82 transitions. Word has length 9 [2020-11-29 23:55:45,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:45,909 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 82 transitions. [2020-11-29 23:55:45,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:55:45,909 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 82 transitions. [2020-11-29 23:55:45,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 23:55:45,910 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:45,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:45,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:55:45,911 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:45,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:45,912 INFO L82 PathProgramCache]: Analyzing trace with hash 120209725, now seen corresponding path program 1 times [2020-11-29 23:55:45,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:45,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470379801] [2020-11-29 23:55:45,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:45,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:46,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:46,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:46,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470379801] [2020-11-29 23:55:46,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:46,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:46,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307882526] [2020-11-29 23:55:46,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:46,160 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:46,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:46,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:46,177 INFO L87 Difference]: Start difference. First operand 47 states and 82 transitions. Second operand 4 states. [2020-11-29 23:55:46,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:46,612 INFO L93 Difference]: Finished difference Result 85 states and 154 transitions. [2020-11-29 23:55:46,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:46,613 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-29 23:55:46,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:46,615 INFO L225 Difference]: With dead ends: 85 [2020-11-29 23:55:46,615 INFO L226 Difference]: Without dead ends: 85 [2020-11-29 23:55:46,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:46,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-29 23:55:46,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 60. [2020-11-29 23:55:46,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-29 23:55:46,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 107 transitions. [2020-11-29 23:55:46,627 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 107 transitions. Word has length 24 [2020-11-29 23:55:46,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:46,627 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 107 transitions. [2020-11-29 23:55:46,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:46,627 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 107 transitions. [2020-11-29 23:55:46,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 23:55:46,628 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:46,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:46,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:55:46,629 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:46,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:46,630 INFO L82 PathProgramCache]: Analyzing trace with hash -900858629, now seen corresponding path program 1 times [2020-11-29 23:55:46,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:46,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227948878] [2020-11-29 23:55:46,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:46,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:46,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:46,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:46,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:46,762 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227948878] [2020-11-29 23:55:46,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:46,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:46,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758735838] [2020-11-29 23:55:46,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:46,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:46,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:46,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:46,764 INFO L87 Difference]: Start difference. First operand 60 states and 107 transitions. Second operand 4 states. [2020-11-29 23:55:47,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:47,056 INFO L93 Difference]: Finished difference Result 85 states and 152 transitions. [2020-11-29 23:55:47,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:47,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-29 23:55:47,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:47,060 INFO L225 Difference]: With dead ends: 85 [2020-11-29 23:55:47,060 INFO L226 Difference]: Without dead ends: 85 [2020-11-29 23:55:47,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:47,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-11-29 23:55:47,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2020-11-29 23:55:47,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-29 23:55:47,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 151 transitions. [2020-11-29 23:55:47,085 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 151 transitions. Word has length 24 [2020-11-29 23:55:47,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:47,085 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 151 transitions. [2020-11-29 23:55:47,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:47,086 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 151 transitions. [2020-11-29 23:55:47,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 23:55:47,087 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:47,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:47,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 23:55:47,087 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:47,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:47,088 INFO L82 PathProgramCache]: Analyzing trace with hash -561878445, now seen corresponding path program 1 times [2020-11-29 23:55:47,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:47,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058642341] [2020-11-29 23:55:47,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:47,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:47,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:47,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058642341] [2020-11-29 23:55:47,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:47,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:47,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715720673] [2020-11-29 23:55:47,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:47,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:47,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:47,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:47,217 INFO L87 Difference]: Start difference. First operand 84 states and 151 transitions. Second operand 4 states. [2020-11-29 23:55:47,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:47,442 INFO L93 Difference]: Finished difference Result 88 states and 154 transitions. [2020-11-29 23:55:47,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:47,443 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-29 23:55:47,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:47,444 INFO L225 Difference]: With dead ends: 88 [2020-11-29 23:55:47,444 INFO L226 Difference]: Without dead ends: 88 [2020-11-29 23:55:47,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:47,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-11-29 23:55:47,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-11-29 23:55:47,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-29 23:55:47,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 153 transitions. [2020-11-29 23:55:47,457 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 153 transitions. Word has length 25 [2020-11-29 23:55:47,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:47,457 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 153 transitions. [2020-11-29 23:55:47,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:47,457 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 153 transitions. [2020-11-29 23:55:47,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 23:55:47,458 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:47,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:47,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 23:55:47,459 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:47,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:47,460 INFO L82 PathProgramCache]: Analyzing trace with hash 2144740949, now seen corresponding path program 1 times [2020-11-29 23:55:47,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:47,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347934761] [2020-11-29 23:55:47,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:47,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:47,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:47,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347934761] [2020-11-29 23:55:47,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:47,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:47,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187985789] [2020-11-29 23:55:47,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:47,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:47,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:47,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:47,583 INFO L87 Difference]: Start difference. First operand 87 states and 153 transitions. Second operand 4 states. [2020-11-29 23:55:47,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:47,820 INFO L93 Difference]: Finished difference Result 161 states and 287 transitions. [2020-11-29 23:55:47,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:47,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-29 23:55:47,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:47,823 INFO L225 Difference]: With dead ends: 161 [2020-11-29 23:55:47,823 INFO L226 Difference]: Without dead ends: 161 [2020-11-29 23:55:47,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:47,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-11-29 23:55:47,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 160. [2020-11-29 23:55:47,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-11-29 23:55:47,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 286 transitions. [2020-11-29 23:55:47,836 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 286 transitions. Word has length 25 [2020-11-29 23:55:47,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:47,836 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 286 transitions. [2020-11-29 23:55:47,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:47,836 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 286 transitions. [2020-11-29 23:55:47,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 23:55:47,838 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:47,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:47,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 23:55:47,838 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:47,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:47,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1129157993, now seen corresponding path program 1 times [2020-11-29 23:55:47,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:47,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684331168] [2020-11-29 23:55:47,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:47,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:47,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:47,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684331168] [2020-11-29 23:55:47,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:47,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:47,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563076999] [2020-11-29 23:55:47,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:47,938 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:47,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:47,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:47,939 INFO L87 Difference]: Start difference. First operand 160 states and 286 transitions. Second operand 4 states. [2020-11-29 23:55:48,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:48,133 INFO L93 Difference]: Finished difference Result 205 states and 369 transitions. [2020-11-29 23:55:48,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:48,133 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-29 23:55:48,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:48,135 INFO L225 Difference]: With dead ends: 205 [2020-11-29 23:55:48,135 INFO L226 Difference]: Without dead ends: 205 [2020-11-29 23:55:48,136 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:48,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-11-29 23:55:48,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 160. [2020-11-29 23:55:48,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-11-29 23:55:48,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 284 transitions. [2020-11-29 23:55:48,148 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 284 transitions. Word has length 25 [2020-11-29 23:55:48,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:48,148 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 284 transitions. [2020-11-29 23:55:48,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:48,149 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 284 transitions. [2020-11-29 23:55:48,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 23:55:48,150 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:48,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:48,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 23:55:48,151 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:48,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:48,151 INFO L82 PathProgramCache]: Analyzing trace with hash 2069057926, now seen corresponding path program 1 times [2020-11-29 23:55:48,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:48,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316879940] [2020-11-29 23:55:48,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:48,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:48,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:48,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316879940] [2020-11-29 23:55:48,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:48,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:48,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30105921] [2020-11-29 23:55:48,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:48,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:48,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:48,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:48,243 INFO L87 Difference]: Start difference. First operand 160 states and 284 transitions. Second operand 4 states. [2020-11-29 23:55:48,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:48,450 INFO L93 Difference]: Finished difference Result 297 states and 535 transitions. [2020-11-29 23:55:48,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:48,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-29 23:55:48,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:48,453 INFO L225 Difference]: With dead ends: 297 [2020-11-29 23:55:48,453 INFO L226 Difference]: Without dead ends: 297 [2020-11-29 23:55:48,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:48,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-11-29 23:55:48,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 216. [2020-11-29 23:55:48,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-11-29 23:55:48,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 382 transitions. [2020-11-29 23:55:48,480 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 382 transitions. Word has length 26 [2020-11-29 23:55:48,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:48,480 INFO L481 AbstractCegarLoop]: Abstraction has 216 states and 382 transitions. [2020-11-29 23:55:48,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:48,481 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 382 transitions. [2020-11-29 23:55:48,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 23:55:48,484 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:48,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:48,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 23:55:48,486 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:48,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:48,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1047989572, now seen corresponding path program 1 times [2020-11-29 23:55:48,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:48,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189678882] [2020-11-29 23:55:48,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:48,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:48,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:48,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189678882] [2020-11-29 23:55:48,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:48,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:48,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767872584] [2020-11-29 23:55:48,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:48,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:48,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:48,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:48,577 INFO L87 Difference]: Start difference. First operand 216 states and 382 transitions. Second operand 4 states. [2020-11-29 23:55:48,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:48,791 INFO L93 Difference]: Finished difference Result 305 states and 537 transitions. [2020-11-29 23:55:48,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:48,792 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-29 23:55:48,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:48,794 INFO L225 Difference]: With dead ends: 305 [2020-11-29 23:55:48,794 INFO L226 Difference]: Without dead ends: 305 [2020-11-29 23:55:48,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:48,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2020-11-29 23:55:48,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 304. [2020-11-29 23:55:48,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-11-29 23:55:48,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 536 transitions. [2020-11-29 23:55:48,811 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 536 transitions. Word has length 26 [2020-11-29 23:55:48,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:48,811 INFO L481 AbstractCegarLoop]: Abstraction has 304 states and 536 transitions. [2020-11-29 23:55:48,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:48,811 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 536 transitions. [2020-11-29 23:55:48,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 23:55:48,819 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:48,820 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:48,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 23:55:48,821 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:48,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:48,821 INFO L82 PathProgramCache]: Analyzing trace with hash -277105216, now seen corresponding path program 1 times [2020-11-29 23:55:48,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:48,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124947062] [2020-11-29 23:55:48,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:48,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:48,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124947062] [2020-11-29 23:55:48,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:48,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:48,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214751066] [2020-11-29 23:55:48,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:48,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:48,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:48,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:48,910 INFO L87 Difference]: Start difference. First operand 304 states and 536 transitions. Second operand 4 states. [2020-11-29 23:55:49,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:49,093 INFO L93 Difference]: Finished difference Result 311 states and 541 transitions. [2020-11-29 23:55:49,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:49,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-11-29 23:55:49,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:49,096 INFO L225 Difference]: With dead ends: 311 [2020-11-29 23:55:49,096 INFO L226 Difference]: Without dead ends: 311 [2020-11-29 23:55:49,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:49,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-11-29 23:55:49,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 310. [2020-11-29 23:55:49,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 310 states. [2020-11-29 23:55:49,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 540 transitions. [2020-11-29 23:55:49,110 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 540 transitions. Word has length 27 [2020-11-29 23:55:49,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:49,110 INFO L481 AbstractCegarLoop]: Abstraction has 310 states and 540 transitions. [2020-11-29 23:55:49,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:49,110 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 540 transitions. [2020-11-29 23:55:49,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 23:55:49,111 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:49,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:49,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 23:55:49,112 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:49,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:49,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1865453118, now seen corresponding path program 1 times [2020-11-29 23:55:49,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:49,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226200126] [2020-11-29 23:55:49,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:49,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:49,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:49,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226200126] [2020-11-29 23:55:49,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:49,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:49,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243796821] [2020-11-29 23:55:49,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:49,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:49,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:49,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:49,173 INFO L87 Difference]: Start difference. First operand 310 states and 540 transitions. Second operand 4 states. [2020-11-29 23:55:49,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:49,403 INFO L93 Difference]: Finished difference Result 571 states and 1005 transitions. [2020-11-29 23:55:49,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:49,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-11-29 23:55:49,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:49,408 INFO L225 Difference]: With dead ends: 571 [2020-11-29 23:55:49,408 INFO L226 Difference]: Without dead ends: 571 [2020-11-29 23:55:49,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:49,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2020-11-29 23:55:49,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 426. [2020-11-29 23:55:49,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-11-29 23:55:49,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 732 transitions. [2020-11-29 23:55:49,428 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 732 transitions. Word has length 27 [2020-11-29 23:55:49,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:49,430 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 732 transitions. [2020-11-29 23:55:49,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:49,430 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 732 transitions. [2020-11-29 23:55:49,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 23:55:49,434 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:49,435 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:49,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 23:55:49,435 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:49,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:49,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1408445824, now seen corresponding path program 1 times [2020-11-29 23:55:49,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:49,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145234205] [2020-11-29 23:55:49,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:49,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:49,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:49,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145234205] [2020-11-29 23:55:49,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:49,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:49,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968662006] [2020-11-29 23:55:49,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:49,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:49,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:49,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:49,515 INFO L87 Difference]: Start difference. First operand 426 states and 732 transitions. Second operand 4 states. [2020-11-29 23:55:49,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:49,726 INFO L93 Difference]: Finished difference Result 595 states and 1017 transitions. [2020-11-29 23:55:49,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:49,727 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-11-29 23:55:49,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:49,731 INFO L225 Difference]: With dead ends: 595 [2020-11-29 23:55:49,731 INFO L226 Difference]: Without dead ends: 595 [2020-11-29 23:55:49,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:49,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2020-11-29 23:55:49,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 594. [2020-11-29 23:55:49,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-11-29 23:55:49,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 1016 transitions. [2020-11-29 23:55:49,750 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 1016 transitions. Word has length 27 [2020-11-29 23:55:49,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:49,750 INFO L481 AbstractCegarLoop]: Abstraction has 594 states and 1016 transitions. [2020-11-29 23:55:49,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:49,750 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 1016 transitions. [2020-11-29 23:55:49,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 23:55:49,755 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:49,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:49,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 23:55:49,756 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:49,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:49,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1987852721, now seen corresponding path program 1 times [2020-11-29 23:55:49,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:49,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329219588] [2020-11-29 23:55:49,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:49,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:49,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:49,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:49,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329219588] [2020-11-29 23:55:49,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:49,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:49,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706921227] [2020-11-29 23:55:49,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:49,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:49,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:49,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:49,825 INFO L87 Difference]: Start difference. First operand 594 states and 1016 transitions. Second operand 4 states. [2020-11-29 23:55:50,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:50,032 INFO L93 Difference]: Finished difference Result 603 states and 1017 transitions. [2020-11-29 23:55:50,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:50,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-11-29 23:55:50,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:50,038 INFO L225 Difference]: With dead ends: 603 [2020-11-29 23:55:50,038 INFO L226 Difference]: Without dead ends: 603 [2020-11-29 23:55:50,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:50,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2020-11-29 23:55:50,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 602. [2020-11-29 23:55:50,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2020-11-29 23:55:50,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1016 transitions. [2020-11-29 23:55:50,060 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1016 transitions. Word has length 28 [2020-11-29 23:55:50,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:50,061 INFO L481 AbstractCegarLoop]: Abstraction has 602 states and 1016 transitions. [2020-11-29 23:55:50,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:50,061 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1016 transitions. [2020-11-29 23:55:50,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 23:55:50,062 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:50,062 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:50,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 23:55:50,062 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:50,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:50,063 INFO L82 PathProgramCache]: Analyzing trace with hash 718766673, now seen corresponding path program 1 times [2020-11-29 23:55:50,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:50,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750686496] [2020-11-29 23:55:50,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:50,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:50,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:50,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750686496] [2020-11-29 23:55:50,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:50,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:50,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446485263] [2020-11-29 23:55:50,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:50,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:50,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:50,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:50,134 INFO L87 Difference]: Start difference. First operand 602 states and 1016 transitions. Second operand 4 states. [2020-11-29 23:55:50,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:50,328 INFO L93 Difference]: Finished difference Result 1099 states and 1873 transitions. [2020-11-29 23:55:50,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:50,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-11-29 23:55:50,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:50,335 INFO L225 Difference]: With dead ends: 1099 [2020-11-29 23:55:50,335 INFO L226 Difference]: Without dead ends: 1099 [2020-11-29 23:55:50,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:50,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2020-11-29 23:55:50,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 842. [2020-11-29 23:55:50,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 842 states. [2020-11-29 23:55:50,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1392 transitions. [2020-11-29 23:55:50,364 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1392 transitions. Word has length 28 [2020-11-29 23:55:50,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:50,364 INFO L481 AbstractCegarLoop]: Abstraction has 842 states and 1392 transitions. [2020-11-29 23:55:50,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:50,364 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1392 transitions. [2020-11-29 23:55:50,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 23:55:50,366 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:50,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:50,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-29 23:55:50,367 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:50,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:50,368 INFO L82 PathProgramCache]: Analyzing trace with hash -302301681, now seen corresponding path program 1 times [2020-11-29 23:55:50,368 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:50,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886400990] [2020-11-29 23:55:50,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:50,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:50,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:50,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886400990] [2020-11-29 23:55:50,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:50,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:50,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787311337] [2020-11-29 23:55:50,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:50,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:50,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:50,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:50,453 INFO L87 Difference]: Start difference. First operand 842 states and 1392 transitions. Second operand 4 states. [2020-11-29 23:55:50,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:50,656 INFO L93 Difference]: Finished difference Result 1163 states and 1913 transitions. [2020-11-29 23:55:50,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:50,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-11-29 23:55:50,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:50,663 INFO L225 Difference]: With dead ends: 1163 [2020-11-29 23:55:50,663 INFO L226 Difference]: Without dead ends: 1163 [2020-11-29 23:55:50,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:50,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2020-11-29 23:55:50,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1162. [2020-11-29 23:55:50,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1162 states. [2020-11-29 23:55:50,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 1912 transitions. [2020-11-29 23:55:50,696 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 1912 transitions. Word has length 28 [2020-11-29 23:55:50,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:50,698 INFO L481 AbstractCegarLoop]: Abstraction has 1162 states and 1912 transitions. [2020-11-29 23:55:50,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:50,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 1912 transitions. [2020-11-29 23:55:50,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 23:55:50,699 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:50,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:50,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-29 23:55:50,700 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:50,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:50,701 INFO L82 PathProgramCache]: Analyzing trace with hash 813560043, now seen corresponding path program 1 times [2020-11-29 23:55:50,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:50,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073065881] [2020-11-29 23:55:50,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:50,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:50,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:50,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073065881] [2020-11-29 23:55:50,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:50,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:50,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156972374] [2020-11-29 23:55:50,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:50,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:50,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:50,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:50,786 INFO L87 Difference]: Start difference. First operand 1162 states and 1912 transitions. Second operand 4 states. [2020-11-29 23:55:50,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:50,988 INFO L93 Difference]: Finished difference Result 1179 states and 1913 transitions. [2020-11-29 23:55:50,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:50,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-11-29 23:55:50,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:50,996 INFO L225 Difference]: With dead ends: 1179 [2020-11-29 23:55:50,996 INFO L226 Difference]: Without dead ends: 1179 [2020-11-29 23:55:50,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:50,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1179 states. [2020-11-29 23:55:51,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1179 to 1178. [2020-11-29 23:55:51,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2020-11-29 23:55:51,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1912 transitions. [2020-11-29 23:55:51,030 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1912 transitions. Word has length 29 [2020-11-29 23:55:51,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:51,031 INFO L481 AbstractCegarLoop]: Abstraction has 1178 states and 1912 transitions. [2020-11-29 23:55:51,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:51,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1912 transitions. [2020-11-29 23:55:51,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 23:55:51,033 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:51,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:51,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 23:55:51,033 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:51,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:51,034 INFO L82 PathProgramCache]: Analyzing trace with hash -774787859, now seen corresponding path program 1 times [2020-11-29 23:55:51,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:51,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995337906] [2020-11-29 23:55:51,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:51,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:51,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:51,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995337906] [2020-11-29 23:55:51,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:51,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:51,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78077153] [2020-11-29 23:55:51,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:51,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:51,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:51,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:51,121 INFO L87 Difference]: Start difference. First operand 1178 states and 1912 transitions. Second operand 4 states. [2020-11-29 23:55:51,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:51,331 INFO L93 Difference]: Finished difference Result 2123 states and 3481 transitions. [2020-11-29 23:55:51,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:51,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-11-29 23:55:51,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:51,343 INFO L225 Difference]: With dead ends: 2123 [2020-11-29 23:55:51,343 INFO L226 Difference]: Without dead ends: 2123 [2020-11-29 23:55:51,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:51,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2020-11-29 23:55:51,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 1674. [2020-11-29 23:55:51,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1674 states. [2020-11-29 23:55:51,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 2648 transitions. [2020-11-29 23:55:51,391 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 2648 transitions. Word has length 29 [2020-11-29 23:55:51,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:51,391 INFO L481 AbstractCegarLoop]: Abstraction has 1674 states and 2648 transitions. [2020-11-29 23:55:51,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:51,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 2648 transitions. [2020-11-29 23:55:51,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-29 23:55:51,394 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:51,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:51,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 23:55:51,394 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:51,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:51,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1795856213, now seen corresponding path program 1 times [2020-11-29 23:55:51,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:51,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421325615] [2020-11-29 23:55:51,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:51,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:51,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:51,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:51,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421325615] [2020-11-29 23:55:51,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:51,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:51,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186762874] [2020-11-29 23:55:51,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:51,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:51,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:51,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:51,450 INFO L87 Difference]: Start difference. First operand 1674 states and 2648 transitions. Second operand 4 states. [2020-11-29 23:55:51,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:51,670 INFO L93 Difference]: Finished difference Result 2283 states and 3593 transitions. [2020-11-29 23:55:51,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:51,671 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-11-29 23:55:51,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:51,682 INFO L225 Difference]: With dead ends: 2283 [2020-11-29 23:55:51,683 INFO L226 Difference]: Without dead ends: 2283 [2020-11-29 23:55:51,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:51,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2283 states. [2020-11-29 23:55:51,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2283 to 2282. [2020-11-29 23:55:51,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2282 states. [2020-11-29 23:55:51,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 3592 transitions. [2020-11-29 23:55:51,743 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 3592 transitions. Word has length 29 [2020-11-29 23:55:51,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:51,743 INFO L481 AbstractCegarLoop]: Abstraction has 2282 states and 3592 transitions. [2020-11-29 23:55:51,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:51,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 3592 transitions. [2020-11-29 23:55:51,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 23:55:51,746 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:51,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:51,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 23:55:51,746 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:51,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:51,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1758020378, now seen corresponding path program 1 times [2020-11-29 23:55:51,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:51,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249281519] [2020-11-29 23:55:51,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:51,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:51,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:51,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249281519] [2020-11-29 23:55:51,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:51,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:51,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184066751] [2020-11-29 23:55:51,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:51,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:51,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:51,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:51,808 INFO L87 Difference]: Start difference. First operand 2282 states and 3592 transitions. Second operand 4 states. [2020-11-29 23:55:51,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:51,995 INFO L93 Difference]: Finished difference Result 2315 states and 3593 transitions. [2020-11-29 23:55:51,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:51,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-11-29 23:55:51,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:52,007 INFO L225 Difference]: With dead ends: 2315 [2020-11-29 23:55:52,007 INFO L226 Difference]: Without dead ends: 2315 [2020-11-29 23:55:52,007 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:52,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2315 states. [2020-11-29 23:55:52,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2315 to 2314. [2020-11-29 23:55:52,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2314 states. [2020-11-29 23:55:52,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 3592 transitions. [2020-11-29 23:55:52,068 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 3592 transitions. Word has length 30 [2020-11-29 23:55:52,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:52,068 INFO L481 AbstractCegarLoop]: Abstraction has 2314 states and 3592 transitions. [2020-11-29 23:55:52,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:52,068 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 3592 transitions. [2020-11-29 23:55:52,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 23:55:52,071 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:52,071 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:52,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-29 23:55:52,071 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:52,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:52,072 INFO L82 PathProgramCache]: Analyzing trace with hash 169672476, now seen corresponding path program 1 times [2020-11-29 23:55:52,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:52,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041687834] [2020-11-29 23:55:52,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:52,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:52,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041687834] [2020-11-29 23:55:52,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:52,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:52,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814717950] [2020-11-29 23:55:52,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:52,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:52,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:52,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:52,142 INFO L87 Difference]: Start difference. First operand 2314 states and 3592 transitions. Second operand 4 states. [2020-11-29 23:55:52,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:52,343 INFO L93 Difference]: Finished difference Result 4107 states and 6441 transitions. [2020-11-29 23:55:52,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:52,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-11-29 23:55:52,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:52,366 INFO L225 Difference]: With dead ends: 4107 [2020-11-29 23:55:52,366 INFO L226 Difference]: Without dead ends: 4107 [2020-11-29 23:55:52,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:52,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4107 states. [2020-11-29 23:55:52,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4107 to 3338. [2020-11-29 23:55:52,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3338 states. [2020-11-29 23:55:52,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3338 states to 3338 states and 5032 transitions. [2020-11-29 23:55:52,462 INFO L78 Accepts]: Start accepts. Automaton has 3338 states and 5032 transitions. Word has length 30 [2020-11-29 23:55:52,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:52,463 INFO L481 AbstractCegarLoop]: Abstraction has 3338 states and 5032 transitions. [2020-11-29 23:55:52,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:52,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3338 states and 5032 transitions. [2020-11-29 23:55:52,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 23:55:52,468 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:52,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:52,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-11-29 23:55:52,469 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:52,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:52,469 INFO L82 PathProgramCache]: Analyzing trace with hash -851395878, now seen corresponding path program 1 times [2020-11-29 23:55:52,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:52,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030306072] [2020-11-29 23:55:52,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:52,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:52,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:52,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030306072] [2020-11-29 23:55:52,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:52,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:52,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591518889] [2020-11-29 23:55:52,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:52,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:52,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:52,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:52,530 INFO L87 Difference]: Start difference. First operand 3338 states and 5032 transitions. Second operand 4 states. [2020-11-29 23:55:52,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:52,736 INFO L93 Difference]: Finished difference Result 4491 states and 6729 transitions. [2020-11-29 23:55:52,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:52,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-11-29 23:55:52,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:52,760 INFO L225 Difference]: With dead ends: 4491 [2020-11-29 23:55:52,760 INFO L226 Difference]: Without dead ends: 4491 [2020-11-29 23:55:52,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:52,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4491 states. [2020-11-29 23:55:52,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4491 to 4490. [2020-11-29 23:55:52,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4490 states. [2020-11-29 23:55:52,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 6728 transitions. [2020-11-29 23:55:52,888 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 6728 transitions. Word has length 30 [2020-11-29 23:55:52,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:52,889 INFO L481 AbstractCegarLoop]: Abstraction has 4490 states and 6728 transitions. [2020-11-29 23:55:52,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:52,889 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 6728 transitions. [2020-11-29 23:55:52,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 23:55:52,894 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:52,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:52,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-11-29 23:55:52,894 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:52,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:52,895 INFO L82 PathProgramCache]: Analyzing trace with hash 971530262, now seen corresponding path program 1 times [2020-11-29 23:55:52,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:52,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002470287] [2020-11-29 23:55:52,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:52,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:52,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:52,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:52,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002470287] [2020-11-29 23:55:52,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:52,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:52,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462320010] [2020-11-29 23:55:52,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:52,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:52,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:52,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:52,951 INFO L87 Difference]: Start difference. First operand 4490 states and 6728 transitions. Second operand 4 states. [2020-11-29 23:55:53,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:53,136 INFO L93 Difference]: Finished difference Result 4555 states and 6729 transitions. [2020-11-29 23:55:53,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:53,136 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-29 23:55:53,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:53,159 INFO L225 Difference]: With dead ends: 4555 [2020-11-29 23:55:53,159 INFO L226 Difference]: Without dead ends: 4555 [2020-11-29 23:55:53,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:53,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4555 states. [2020-11-29 23:55:53,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4555 to 4554. [2020-11-29 23:55:53,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4554 states. [2020-11-29 23:55:53,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4554 states to 4554 states and 6728 transitions. [2020-11-29 23:55:53,292 INFO L78 Accepts]: Start accepts. Automaton has 4554 states and 6728 transitions. Word has length 31 [2020-11-29 23:55:53,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:53,293 INFO L481 AbstractCegarLoop]: Abstraction has 4554 states and 6728 transitions. [2020-11-29 23:55:53,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:53,293 INFO L276 IsEmpty]: Start isEmpty. Operand 4554 states and 6728 transitions. [2020-11-29 23:55:53,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 23:55:53,298 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:53,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:53,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-11-29 23:55:53,299 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:53,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:53,299 INFO L82 PathProgramCache]: Analyzing trace with hash -616817640, now seen corresponding path program 1 times [2020-11-29 23:55:53,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:53,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623835544] [2020-11-29 23:55:53,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:53,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:53,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:53,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623835544] [2020-11-29 23:55:53,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:53,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:53,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441436185] [2020-11-29 23:55:53,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:53,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:53,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:53,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:53,353 INFO L87 Difference]: Start difference. First operand 4554 states and 6728 transitions. Second operand 4 states. [2020-11-29 23:55:53,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:53,561 INFO L93 Difference]: Finished difference Result 7947 states and 11849 transitions. [2020-11-29 23:55:53,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:53,562 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-29 23:55:53,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:53,592 INFO L225 Difference]: With dead ends: 7947 [2020-11-29 23:55:53,592 INFO L226 Difference]: Without dead ends: 7947 [2020-11-29 23:55:53,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:53,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7947 states. [2020-11-29 23:55:53,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7947 to 6666. [2020-11-29 23:55:53,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6666 states. [2020-11-29 23:55:53,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6666 states to 6666 states and 9544 transitions. [2020-11-29 23:55:53,778 INFO L78 Accepts]: Start accepts. Automaton has 6666 states and 9544 transitions. Word has length 31 [2020-11-29 23:55:53,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:53,778 INFO L481 AbstractCegarLoop]: Abstraction has 6666 states and 9544 transitions. [2020-11-29 23:55:53,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:53,778 INFO L276 IsEmpty]: Start isEmpty. Operand 6666 states and 9544 transitions. [2020-11-29 23:55:53,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 23:55:53,788 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:53,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:53,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-29 23:55:53,789 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:53,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:53,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1637885994, now seen corresponding path program 1 times [2020-11-29 23:55:53,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:53,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492956789] [2020-11-29 23:55:53,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:53,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:53,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:53,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492956789] [2020-11-29 23:55:53,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:53,845 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:53,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961037563] [2020-11-29 23:55:53,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:53,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:53,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:53,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:53,846 INFO L87 Difference]: Start difference. First operand 6666 states and 9544 transitions. Second operand 4 states. [2020-11-29 23:55:54,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:54,056 INFO L93 Difference]: Finished difference Result 8843 states and 12553 transitions. [2020-11-29 23:55:54,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:54,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-11-29 23:55:54,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:54,074 INFO L225 Difference]: With dead ends: 8843 [2020-11-29 23:55:54,075 INFO L226 Difference]: Without dead ends: 8843 [2020-11-29 23:55:54,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:54,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8843 states. [2020-11-29 23:55:54,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8843 to 8842. [2020-11-29 23:55:54,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8842 states. [2020-11-29 23:55:54,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8842 states to 8842 states and 12552 transitions. [2020-11-29 23:55:54,284 INFO L78 Accepts]: Start accepts. Automaton has 8842 states and 12552 transitions. Word has length 31 [2020-11-29 23:55:54,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:54,285 INFO L481 AbstractCegarLoop]: Abstraction has 8842 states and 12552 transitions. [2020-11-29 23:55:54,285 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:54,285 INFO L276 IsEmpty]: Start isEmpty. Operand 8842 states and 12552 transitions. [2020-11-29 23:55:54,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 23:55:54,295 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:54,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:54,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-11-29 23:55:54,296 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:54,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:54,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1934816283, now seen corresponding path program 1 times [2020-11-29 23:55:54,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:54,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036628709] [2020-11-29 23:55:54,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:54,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:54,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:54,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036628709] [2020-11-29 23:55:54,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:54,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:54,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436502120] [2020-11-29 23:55:54,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:54,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:54,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:54,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:54,351 INFO L87 Difference]: Start difference. First operand 8842 states and 12552 transitions. Second operand 4 states. [2020-11-29 23:55:54,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:54,547 INFO L93 Difference]: Finished difference Result 8971 states and 12553 transitions. [2020-11-29 23:55:54,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:54,548 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-11-29 23:55:54,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:54,602 INFO L225 Difference]: With dead ends: 8971 [2020-11-29 23:55:54,603 INFO L226 Difference]: Without dead ends: 8971 [2020-11-29 23:55:54,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:54,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8971 states. [2020-11-29 23:55:54,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8971 to 8970. [2020-11-29 23:55:54,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8970 states. [2020-11-29 23:55:54,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8970 states to 8970 states and 12552 transitions. [2020-11-29 23:55:54,792 INFO L78 Accepts]: Start accepts. Automaton has 8970 states and 12552 transitions. Word has length 32 [2020-11-29 23:55:54,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:54,792 INFO L481 AbstractCegarLoop]: Abstraction has 8970 states and 12552 transitions. [2020-11-29 23:55:54,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:54,793 INFO L276 IsEmpty]: Start isEmpty. Operand 8970 states and 12552 transitions. [2020-11-29 23:55:54,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 23:55:54,804 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:54,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:54,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-11-29 23:55:54,805 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:54,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:54,805 INFO L82 PathProgramCache]: Analyzing trace with hash 771803111, now seen corresponding path program 1 times [2020-11-29 23:55:54,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:54,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279676515] [2020-11-29 23:55:54,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:54,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:54,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:54,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279676515] [2020-11-29 23:55:54,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:54,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:54,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644067658] [2020-11-29 23:55:54,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:54,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:54,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:54,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:54,866 INFO L87 Difference]: Start difference. First operand 8970 states and 12552 transitions. Second operand 4 states. [2020-11-29 23:55:55,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:55,097 INFO L93 Difference]: Finished difference Result 15371 states and 21641 transitions. [2020-11-29 23:55:55,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:55,098 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-11-29 23:55:55,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:55,129 INFO L225 Difference]: With dead ends: 15371 [2020-11-29 23:55:55,129 INFO L226 Difference]: Without dead ends: 15371 [2020-11-29 23:55:55,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:55,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15371 states. [2020-11-29 23:55:55,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15371 to 13322. [2020-11-29 23:55:55,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13322 states. [2020-11-29 23:55:55,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13322 states to 13322 states and 18056 transitions. [2020-11-29 23:55:55,423 INFO L78 Accepts]: Start accepts. Automaton has 13322 states and 18056 transitions. Word has length 32 [2020-11-29 23:55:55,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:55,423 INFO L481 AbstractCegarLoop]: Abstraction has 13322 states and 18056 transitions. [2020-11-29 23:55:55,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:55,423 INFO L276 IsEmpty]: Start isEmpty. Operand 13322 states and 18056 transitions. [2020-11-29 23:55:55,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 23:55:55,442 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:55,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:55,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-11-29 23:55:55,442 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:55,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:55,443 INFO L82 PathProgramCache]: Analyzing trace with hash -249265243, now seen corresponding path program 1 times [2020-11-29 23:55:55,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:55,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70477274] [2020-11-29 23:55:55,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:55,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:55,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:55,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70477274] [2020-11-29 23:55:55,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:55,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:55,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209866032] [2020-11-29 23:55:55,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:55,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:55,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:55,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:55,503 INFO L87 Difference]: Start difference. First operand 13322 states and 18056 transitions. Second operand 4 states. [2020-11-29 23:55:55,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:55,790 INFO L93 Difference]: Finished difference Result 17419 states and 23305 transitions. [2020-11-29 23:55:55,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:55,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-11-29 23:55:55,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:55,824 INFO L225 Difference]: With dead ends: 17419 [2020-11-29 23:55:55,824 INFO L226 Difference]: Without dead ends: 17419 [2020-11-29 23:55:55,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:55,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17419 states. [2020-11-29 23:55:56,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17419 to 17418. [2020-11-29 23:55:56,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17418 states. [2020-11-29 23:55:56,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17418 states to 17418 states and 23304 transitions. [2020-11-29 23:55:56,147 INFO L78 Accepts]: Start accepts. Automaton has 17418 states and 23304 transitions. Word has length 32 [2020-11-29 23:55:56,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:56,148 INFO L481 AbstractCegarLoop]: Abstraction has 17418 states and 23304 transitions. [2020-11-29 23:55:56,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:56,148 INFO L276 IsEmpty]: Start isEmpty. Operand 17418 states and 23304 transitions. [2020-11-29 23:55:56,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-29 23:55:56,168 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:56,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:56,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-11-29 23:55:56,168 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:56,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:56,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1837235391, now seen corresponding path program 1 times [2020-11-29 23:55:56,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:56,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209762939] [2020-11-29 23:55:56,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:56,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:56,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:56,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209762939] [2020-11-29 23:55:56,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:56,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:56,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564923187] [2020-11-29 23:55:56,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:56,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:56,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:56,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:56,230 INFO L87 Difference]: Start difference. First operand 17418 states and 23304 transitions. Second operand 4 states. [2020-11-29 23:55:56,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:56,440 INFO L93 Difference]: Finished difference Result 17675 states and 23305 transitions. [2020-11-29 23:55:56,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:56,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-11-29 23:55:56,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:56,474 INFO L225 Difference]: With dead ends: 17675 [2020-11-29 23:55:56,474 INFO L226 Difference]: Without dead ends: 17675 [2020-11-29 23:55:56,475 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:56,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17675 states. [2020-11-29 23:55:56,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17675 to 17674. [2020-11-29 23:55:56,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17674 states. [2020-11-29 23:55:56,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17674 states to 17674 states and 23304 transitions. [2020-11-29 23:55:56,830 INFO L78 Accepts]: Start accepts. Automaton has 17674 states and 23304 transitions. Word has length 33 [2020-11-29 23:55:56,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:56,831 INFO L481 AbstractCegarLoop]: Abstraction has 17674 states and 23304 transitions. [2020-11-29 23:55:56,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:56,831 INFO L276 IsEmpty]: Start isEmpty. Operand 17674 states and 23304 transitions. [2020-11-29 23:55:56,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-29 23:55:56,865 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:56,866 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:56,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-11-29 23:55:56,866 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:56,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:56,867 INFO L82 PathProgramCache]: Analyzing trace with hash 869384003, now seen corresponding path program 1 times [2020-11-29 23:55:56,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:56,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229510649] [2020-11-29 23:55:56,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:57,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:57,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229510649] [2020-11-29 23:55:57,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:57,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:57,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306352079] [2020-11-29 23:55:57,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:57,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:57,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:57,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:57,037 INFO L87 Difference]: Start difference. First operand 17674 states and 23304 transitions. Second operand 4 states. [2020-11-29 23:55:57,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:57,274 INFO L93 Difference]: Finished difference Result 34315 states and 43529 transitions. [2020-11-29 23:55:57,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:57,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-11-29 23:55:57,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:57,326 INFO L225 Difference]: With dead ends: 34315 [2020-11-29 23:55:57,326 INFO L226 Difference]: Without dead ends: 34315 [2020-11-29 23:55:57,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:57,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34315 states. [2020-11-29 23:55:57,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34315 to 34314. [2020-11-29 23:55:57,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34314 states. [2020-11-29 23:55:57,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34314 states to 34314 states and 43528 transitions. [2020-11-29 23:55:57,829 INFO L78 Accepts]: Start accepts. Automaton has 34314 states and 43528 transitions. Word has length 33 [2020-11-29 23:55:57,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:57,830 INFO L481 AbstractCegarLoop]: Abstraction has 34314 states and 43528 transitions. [2020-11-29 23:55:57,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:57,830 INFO L276 IsEmpty]: Start isEmpty. Operand 34314 states and 43528 transitions. [2020-11-29 23:55:57,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-29 23:55:57,860 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:57,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:57,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-11-29 23:55:57,861 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:57,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:57,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1890452357, now seen corresponding path program 1 times [2020-11-29 23:55:57,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:57,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897807041] [2020-11-29 23:55:57,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:57,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:57,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:57,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897807041] [2020-11-29 23:55:57,914 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:57,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:57,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288348393] [2020-11-29 23:55:57,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:57,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:57,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:57,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:57,916 INFO L87 Difference]: Start difference. First operand 34314 states and 43528 transitions. Second operand 4 states. [2020-11-29 23:55:58,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:58,302 INFO L93 Difference]: Finished difference Result 37387 states and 48137 transitions. [2020-11-29 23:55:58,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:58,303 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-11-29 23:55:58,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:58,354 INFO L225 Difference]: With dead ends: 37387 [2020-11-29 23:55:58,354 INFO L226 Difference]: Without dead ends: 37387 [2020-11-29 23:55:58,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:58,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37387 states. [2020-11-29 23:55:58,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37387 to 34314. [2020-11-29 23:55:58,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34314 states. [2020-11-29 23:55:58,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34314 states to 34314 states and 43016 transitions. [2020-11-29 23:55:58,956 INFO L78 Accepts]: Start accepts. Automaton has 34314 states and 43016 transitions. Word has length 33 [2020-11-29 23:55:58,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:55:58,957 INFO L481 AbstractCegarLoop]: Abstraction has 34314 states and 43016 transitions. [2020-11-29 23:55:58,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:55:58,957 INFO L276 IsEmpty]: Start isEmpty. Operand 34314 states and 43016 transitions. [2020-11-29 23:55:58,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 23:55:58,977 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:55:58,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:55:58,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-11-29 23:55:58,977 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:55:58,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:55:58,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1187782832, now seen corresponding path program 1 times [2020-11-29 23:55:58,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:55:58,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071738560] [2020-11-29 23:55:58,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:55:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:59,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:55:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:55:59,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:55:59,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071738560] [2020-11-29 23:55:59,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:55:59,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:55:59,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733997492] [2020-11-29 23:55:59,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:55:59,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:55:59,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:55:59,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:55:59,169 INFO L87 Difference]: Start difference. First operand 34314 states and 43016 transitions. Second operand 4 states. [2020-11-29 23:55:59,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:55:59,536 INFO L93 Difference]: Finished difference Result 56843 states and 70665 transitions. [2020-11-29 23:55:59,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:55:59,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-11-29 23:55:59,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:55:59,604 INFO L225 Difference]: With dead ends: 56843 [2020-11-29 23:55:59,604 INFO L226 Difference]: Without dead ends: 56843 [2020-11-29 23:55:59,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:55:59,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56843 states. [2020-11-29 23:56:00,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56843 to 52746. [2020-11-29 23:56:00,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52746 states. [2020-11-29 23:56:00,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52746 states to 52746 states and 64520 transitions. [2020-11-29 23:56:00,369 INFO L78 Accepts]: Start accepts. Automaton has 52746 states and 64520 transitions. Word has length 34 [2020-11-29 23:56:00,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:00,369 INFO L481 AbstractCegarLoop]: Abstraction has 52746 states and 64520 transitions. [2020-11-29 23:56:00,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:56:00,369 INFO L276 IsEmpty]: Start isEmpty. Operand 52746 states and 64520 transitions. [2020-11-29 23:56:00,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 23:56:00,416 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:00,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:00,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-11-29 23:56:00,417 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:56:00,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:00,417 INFO L82 PathProgramCache]: Analyzing trace with hash 166714478, now seen corresponding path program 1 times [2020-11-29 23:56:00,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:00,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237219776] [2020-11-29 23:56:00,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:00,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:56:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:00,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237219776] [2020-11-29 23:56:00,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:00,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:56:00,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007163705] [2020-11-29 23:56:00,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:56:00,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:00,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:56:00,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:56:00,484 INFO L87 Difference]: Start difference. First operand 52746 states and 64520 transitions. Second operand 4 states. [2020-11-29 23:56:01,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:01,014 INFO L93 Difference]: Finished difference Result 67083 states and 79881 transitions. [2020-11-29 23:56:01,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:56:01,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2020-11-29 23:56:01,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:01,078 INFO L225 Difference]: With dead ends: 67083 [2020-11-29 23:56:01,078 INFO L226 Difference]: Without dead ends: 67083 [2020-11-29 23:56:01,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:56:01,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67083 states. [2020-11-29 23:56:01,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67083 to 67082. [2020-11-29 23:56:01,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67082 states. [2020-11-29 23:56:02,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67082 states to 67082 states and 79880 transitions. [2020-11-29 23:56:02,092 INFO L78 Accepts]: Start accepts. Automaton has 67082 states and 79880 transitions. Word has length 34 [2020-11-29 23:56:02,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:02,092 INFO L481 AbstractCegarLoop]: Abstraction has 67082 states and 79880 transitions. [2020-11-29 23:56:02,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:56:02,097 INFO L276 IsEmpty]: Start isEmpty. Operand 67082 states and 79880 transitions. [2020-11-29 23:56:02,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 23:56:02,151 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:02,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:02,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-11-29 23:56:02,152 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:56:02,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:02,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1826744786, now seen corresponding path program 1 times [2020-11-29 23:56:02,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:02,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065274222] [2020-11-29 23:56:02,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:02,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:56:02,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:02,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:02,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065274222] [2020-11-29 23:56:02,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:02,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:56:02,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105568782] [2020-11-29 23:56:02,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:56:02,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:02,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:56:02,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:56:02,207 INFO L87 Difference]: Start difference. First operand 67082 states and 79880 transitions. Second operand 4 states. [2020-11-29 23:56:02,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:02,553 INFO L93 Difference]: Finished difference Result 68619 states and 80905 transitions. [2020-11-29 23:56:02,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:56:02,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-11-29 23:56:02,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:02,620 INFO L225 Difference]: With dead ends: 68619 [2020-11-29 23:56:02,621 INFO L226 Difference]: Without dead ends: 68619 [2020-11-29 23:56:02,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:56:02,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68619 states. [2020-11-29 23:56:03,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68619 to 68618. [2020-11-29 23:56:03,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68618 states. [2020-11-29 23:56:03,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68618 states to 68618 states and 80904 transitions. [2020-11-29 23:56:03,528 INFO L78 Accepts]: Start accepts. Automaton has 68618 states and 80904 transitions. Word has length 35 [2020-11-29 23:56:03,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:03,528 INFO L481 AbstractCegarLoop]: Abstraction has 68618 states and 80904 transitions. [2020-11-29 23:56:03,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:56:03,528 INFO L276 IsEmpty]: Start isEmpty. Operand 68618 states and 80904 transitions. [2020-11-29 23:56:03,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 23:56:03,557 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:03,557 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:03,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-11-29 23:56:03,557 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:56:03,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:03,557 INFO L82 PathProgramCache]: Analyzing trace with hash 879874608, now seen corresponding path program 1 times [2020-11-29 23:56:03,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:03,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13128753] [2020-11-29 23:56:03,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:03,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:56:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:03,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:03,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13128753] [2020-11-29 23:56:03,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:03,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:56:03,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935729770] [2020-11-29 23:56:03,611 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:56:03,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:03,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:56:03,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:56:03,612 INFO L87 Difference]: Start difference. First operand 68618 states and 80904 transitions. Second operand 4 states. [2020-11-29 23:56:04,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:04,373 INFO L93 Difference]: Finished difference Result 110602 states and 126984 transitions. [2020-11-29 23:56:04,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:56:04,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-11-29 23:56:04,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:04,468 INFO L225 Difference]: With dead ends: 110602 [2020-11-29 23:56:04,469 INFO L226 Difference]: Without dead ends: 110602 [2020-11-29 23:56:04,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:56:04,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110602 states. [2020-11-29 23:56:05,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110602 to 106506. [2020-11-29 23:56:05,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106506 states. [2020-11-29 23:56:05,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106506 states to 106506 states and 122888 transitions. [2020-11-29 23:56:05,802 INFO L78 Accepts]: Start accepts. Automaton has 106506 states and 122888 transitions. Word has length 35 [2020-11-29 23:56:05,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:05,802 INFO L481 AbstractCegarLoop]: Abstraction has 106506 states and 122888 transitions. [2020-11-29 23:56:05,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:56:05,802 INFO L276 IsEmpty]: Start isEmpty. Operand 106506 states and 122888 transitions. [2020-11-29 23:56:05,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 23:56:05,883 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:56:05,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:56:05,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-11-29 23:56:05,883 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0ENSURES_VIOLATIONMEMORY_LEAK]=== [2020-11-29 23:56:05,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:56:05,884 INFO L82 PathProgramCache]: Analyzing trace with hash -141193746, now seen corresponding path program 1 times [2020-11-29 23:56:05,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:56:05,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127313422] [2020-11-29 23:56:05,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:56:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:05,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-29 23:56:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:56:05,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:56:05,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127313422] [2020-11-29 23:56:05,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:56:05,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:56:05,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933542499] [2020-11-29 23:56:05,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:56:05,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:56:05,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:56:05,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:56:05,966 INFO L87 Difference]: Start difference. First operand 106506 states and 122888 transitions. Second operand 4 states. [2020-11-29 23:56:06,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:56:06,473 INFO L93 Difference]: Finished difference Result 133127 states and 147462 transitions. [2020-11-29 23:56:06,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:56:06,474 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-11-29 23:56:06,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:56:06,476 INFO L225 Difference]: With dead ends: 133127 [2020-11-29 23:56:06,477 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 23:56:06,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:56:06,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 23:56:06,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 23:56:06,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 23:56:06,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 23:56:06,478 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-11-29 23:56:06,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:56:06,478 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 23:56:06,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:56:06,478 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 23:56:06,479 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 23:56:06,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-11-29 23:56:06,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:56:06 BoogieIcfgContainer [2020-11-29 23:56:06,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:56:06,484 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:56:06,484 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:56:06,484 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:56:06,485 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:55:45" (3/4) ... [2020-11-29 23:56:06,487 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 23:56:06,494 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2020-11-29 23:56:06,494 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2020-11-29 23:56:06,495 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2020-11-29 23:56:06,504 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-29 23:56:06,505 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 23:56:06,506 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-29 23:56:06,506 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 23:56:06,578 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9220afc3-a856-4a00-9460-754b78538873/bin/uautomizer/witness.graphml [2020-11-29 23:56:06,578 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:56:06,580 INFO L168 Benchmark]: Toolchain (without parser) took 22421.99 ms. Allocated memory was 107.0 MB in the beginning and 11.1 GB in the end (delta: 11.0 GB). Free memory was 76.6 MB in the beginning and 9.8 GB in the end (delta: -9.7 GB). Peak memory consumption was 1.3 GB. Max. memory is 16.1 GB. [2020-11-29 23:56:06,581 INFO L168 Benchmark]: CDTParser took 0.57 ms. Allocated memory is still 71.3 MB. Free memory was 33.9 MB in the beginning and 33.9 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:56:06,582 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.10 ms. Allocated memory is still 107.0 MB. Free memory was 76.6 MB in the beginning and 83.8 MB in the end (delta: -7.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:06,582 INFO L168 Benchmark]: Boogie Preprocessor took 75.60 ms. Allocated memory is still 107.0 MB. Free memory was 83.8 MB in the beginning and 81.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:06,583 INFO L168 Benchmark]: RCFGBuilder took 722.19 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 59.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:06,583 INFO L168 Benchmark]: TraceAbstraction took 21155.56 ms. Allocated memory was 107.0 MB in the beginning and 11.1 GB in the end (delta: 11.0 GB). Free memory was 58.5 MB in the beginning and 9.8 GB in the end (delta: -9.7 GB). Peak memory consumption was 1.3 GB. Max. memory is 16.1 GB. [2020-11-29 23:56:06,584 INFO L168 Benchmark]: Witness Printer took 94.82 ms. Allocated memory is still 11.1 GB. Free memory was 9.8 GB in the beginning and 9.8 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:56:06,586 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.57 ms. Allocated memory is still 71.3 MB. Free memory was 33.9 MB in the beginning and 33.9 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 365.10 ms. Allocated memory is still 107.0 MB. Free memory was 76.6 MB in the beginning and 83.8 MB in the end (delta: -7.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.60 ms. Allocated memory is still 107.0 MB. Free memory was 83.8 MB in the beginning and 81.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 722.19 ms. Allocated memory is still 107.0 MB. Free memory was 81.6 MB in the beginning and 59.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 21155.56 ms. Allocated memory was 107.0 MB in the beginning and 11.1 GB in the end (delta: 11.0 GB). Free memory was 58.5 MB in the beginning and 9.8 GB in the end (delta: -9.7 GB). Peak memory consumption was 1.3 GB. Max. memory is 16.1 GB. * Witness Printer took 94.82 ms. Allocated memory is still 11.1 GB. Free memory was 9.8 GB in the beginning and 9.8 GB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 6]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 56 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.0s, OverallIterations: 34, TraceHistogramMax: 1, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3442 SDtfs, 5053 SDslu, 255 SDs, 0 SdLazy, 2412 SolverSat, 121 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 235 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106506occurred in iteration=33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 7.5s AutomataMinimizationTime, 34 MinimizatonAttempts, 16387 StatesRemovedByMinimization, 32 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 987 NumberOfCodeBlocks, 987 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 953 ConstructedInterpolants, 0 QuantifiedInterpolants, 82577 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...