./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bfc29f03d3be9b41eb07ac14f0f7eac45bf3a60a4a6601e3132f720b72534d53 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:14:07,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:14:07,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:14:07,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:14:07,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:14:07,791 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:14:07,793 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:14:07,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:14:07,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:14:07,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:14:07,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:14:07,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:14:07,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:14:07,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:14:07,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:14:07,811 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:14:07,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:14:07,814 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:14:07,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:14:07,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:14:07,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:14:07,825 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:14:07,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:14:07,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:14:07,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:14:07,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:14:07,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:14:07,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:14:07,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:14:07,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:14:07,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:14:07,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:14:07,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:14:07,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:14:07,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:14:07,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:14:07,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:14:07,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:14:07,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:14:07,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:14:07,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:14:07,848 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2021-11-23 03:14:07,875 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:14:07,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:14:07,876 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:14:07,876 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:14:07,877 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:14:07,877 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:14:07,878 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:14:07,878 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:14:07,878 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:14:07,878 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:14:07,879 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:14:07,879 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:14:07,879 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:14:07,880 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:14:07,880 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:14:07,880 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:14:07,880 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:14:07,881 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:14:07,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 03:14:07,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 03:14:07,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:14:07,882 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:14:07,883 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 03:14:07,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:14:07,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:14:07,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:14:07,884 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 03:14:07,884 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 03:14:07,885 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 03:14:07,885 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:14:07,885 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:14:07,886 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:14:07,886 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:14:07,886 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:14:07,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:14:07,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:14:07,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:14:07,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:14:07,888 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:14:07,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:14:07,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:14:07,889 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:14:07,889 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfc29f03d3be9b41eb07ac14f0f7eac45bf3a60a4a6601e3132f720b72534d53 [2021-11-23 03:14:08,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:14:08,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:14:08,243 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:14:08,245 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:14:08,248 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:14:08,249 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2021-11-23 03:14:08,330 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/data/0c1ecff76/e5cfd879eb6742fbb099b3f343cc0048/FLAGd6a6007a1 [2021-11-23 03:14:08,971 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:14:08,972 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2021-11-23 03:14:08,999 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/data/0c1ecff76/e5cfd879eb6742fbb099b3f343cc0048/FLAGd6a6007a1 [2021-11-23 03:14:09,219 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/data/0c1ecff76/e5cfd879eb6742fbb099b3f343cc0048 [2021-11-23 03:14:09,222 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:14:09,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:14:09,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:14:09,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:14:09,231 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:14:09,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:14:09" (1/1) ... [2021-11-23 03:14:09,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c7d9407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:09, skipping insertion in model container [2021-11-23 03:14:09,239 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:14:09" (1/1) ... [2021-11-23 03:14:09,256 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:14:09,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:14:09,547 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c[2074,2087] [2021-11-23 03:14:09,712 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:14:09,721 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:14:09,735 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c[2074,2087] [2021-11-23 03:14:09,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:14:09,932 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:14:09,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:09 WrapperNode [2021-11-23 03:14:09,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:14:09,933 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:14:09,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:14:09,934 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:14:09,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:09" (1/1) ... [2021-11-23 03:14:09,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:09" (1/1) ... [2021-11-23 03:14:10,087 INFO L137 Inliner]: procedures = 41, calls = 108, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 1583 [2021-11-23 03:14:10,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:14:10,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:14:10,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:14:10,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:14:10,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:09" (1/1) ... [2021-11-23 03:14:10,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:09" (1/1) ... [2021-11-23 03:14:10,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:09" (1/1) ... [2021-11-23 03:14:10,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:09" (1/1) ... [2021-11-23 03:14:10,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:09" (1/1) ... [2021-11-23 03:14:10,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:09" (1/1) ... [2021-11-23 03:14:10,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:09" (1/1) ... [2021-11-23 03:14:10,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:14:10,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:14:10,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:14:10,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:14:10,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:09" (1/1) ... [2021-11-23 03:14:10,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:14:10,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:14:10,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:14:10,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:14:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2021-11-23 03:14:10,393 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2021-11-23 03:14:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:14:10,393 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2021-11-23 03:14:10,393 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2021-11-23 03:14:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-11-23 03:14:10,394 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-11-23 03:14:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2021-11-23 03:14:10,394 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2021-11-23 03:14:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-11-23 03:14:10,394 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-11-23 03:14:10,394 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-11-23 03:14:10,395 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-11-23 03:14:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2021-11-23 03:14:10,395 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2021-11-23 03:14:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2021-11-23 03:14:10,395 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2021-11-23 03:14:10,395 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2021-11-23 03:14:10,396 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2021-11-23 03:14:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-11-23 03:14:10,396 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-11-23 03:14:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:14:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-11-23 03:14:10,396 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-11-23 03:14:10,396 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2021-11-23 03:14:10,397 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2021-11-23 03:14:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:14:10,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:14:10,397 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2021-11-23 03:14:10,397 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2021-11-23 03:14:10,733 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:14:10,736 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:14:10,858 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:14:10,910 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2021-11-23 03:14:10,911 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2021-11-23 03:14:10,968 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:14:10,985 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-11-23 03:14:10,985 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-11-23 03:14:10,993 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:14:10,994 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:14:10,998 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:14:11,010 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:14:11,034 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:14:11,038 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:14:11,042 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:14:11,742 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: CdAudioPnp_#res#1 := 0; [2021-11-23 03:14:11,743 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##258: assume !false; [2021-11-23 03:14:11,743 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##257: assume false; [2021-11-23 03:14:11,744 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##286: assume !false; [2021-11-23 03:14:11,744 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##285: assume false; [2021-11-23 03:14:11,744 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume !false; [2021-11-23 03:14:11,744 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume false; [2021-11-23 03:14:11,744 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##133: assume false; [2021-11-23 03:14:11,745 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##134: assume !false; [2021-11-23 03:14:11,745 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume !false; [2021-11-23 03:14:11,745 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume false; [2021-11-23 03:14:11,745 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-11-23 03:14:11,745 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-11-23 03:14:11,745 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##331: assume false; [2021-11-23 03:14:11,746 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##332: assume !false; [2021-11-23 03:14:11,798 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:14:12,083 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:14:12,084 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:14:12,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:14:12 BoogieIcfgContainer [2021-11-23 03:14:12,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:14:12,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:14:12,090 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:14:12,093 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:14:12,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:14:09" (1/3) ... [2021-11-23 03:14:12,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a7ea812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:14:12, skipping insertion in model container [2021-11-23 03:14:12,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:09" (2/3) ... [2021-11-23 03:14:12,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a7ea812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:14:12, skipping insertion in model container [2021-11-23 03:14:12,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:14:12" (3/3) ... [2021-11-23 03:14:12,097 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.c [2021-11-23 03:14:12,103 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:14:12,103 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 03:14:12,161 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:14:12,169 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:14:12,170 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 03:14:12,196 INFO L276 IsEmpty]: Start isEmpty. Operand has 351 states, 248 states have (on average 1.5241935483870968) internal successors, (378), 268 states have internal predecessors, (378), 87 states have call successors, (87), 13 states have call predecessors, (87), 13 states have return successors, (87), 82 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-23 03:14:12,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-23 03:14:12,202 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:12,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-23 03:14:12,203 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:12,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:12,209 INFO L85 PathProgramCache]: Analyzing trace with hash 49791412, now seen corresponding path program 1 times [2021-11-23 03:14:12,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:12,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148353188] [2021-11-23 03:14:12,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:12,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:12,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:12,391 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:12,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148353188] [2021-11-23 03:14:12,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148353188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:12,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:12,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:14:12,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395076729] [2021-11-23 03:14:12,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:12,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:12,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:12,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:12,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:12,442 INFO L87 Difference]: Start difference. First operand has 351 states, 248 states have (on average 1.5241935483870968) internal successors, (378), 268 states have internal predecessors, (378), 87 states have call successors, (87), 13 states have call predecessors, (87), 13 states have return successors, (87), 82 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:12,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:12,723 INFO L93 Difference]: Finished difference Result 354 states and 536 transitions. [2021-11-23 03:14:12,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:12,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-23 03:14:12,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:12,753 INFO L225 Difference]: With dead ends: 354 [2021-11-23 03:14:12,753 INFO L226 Difference]: Without dead ends: 352 [2021-11-23 03:14:12,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:12,760 INFO L933 BasicCegarLoop]: 466 mSDtfsCounter, 255 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:12,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [316 Valid, 656 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:12,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-11-23 03:14:12,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 349. [2021-11-23 03:14:12,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 248 states have (on average 1.5080645161290323) internal successors, (374), 266 states have internal predecessors, (374), 87 states have call successors, (87), 13 states have call predecessors, (87), 12 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2021-11-23 03:14:12,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 532 transitions. [2021-11-23 03:14:12,887 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 532 transitions. Word has length 4 [2021-11-23 03:14:12,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:12,888 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 532 transitions. [2021-11-23 03:14:12,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:12,890 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 532 transitions. [2021-11-23 03:14:12,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-23 03:14:12,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:12,891 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-23 03:14:12,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:14:12,892 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:12,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:12,896 INFO L85 PathProgramCache]: Analyzing trace with hash 279879072, now seen corresponding path program 1 times [2021-11-23 03:14:12,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:12,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990032572] [2021-11-23 03:14:12,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:12,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:12,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:12,981 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:12,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990032572] [2021-11-23 03:14:12,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990032572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:12,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:12,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:14:12,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757666912] [2021-11-23 03:14:12,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:12,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:12,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:12,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:12,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:12,999 INFO L87 Difference]: Start difference. First operand 349 states and 532 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:13,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:13,233 INFO L93 Difference]: Finished difference Result 460 states and 685 transitions. [2021-11-23 03:14:13,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:13,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-23 03:14:13,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:13,240 INFO L225 Difference]: With dead ends: 460 [2021-11-23 03:14:13,240 INFO L226 Difference]: Without dead ends: 460 [2021-11-23 03:14:13,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:13,247 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 516 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:13,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 624 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:13,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2021-11-23 03:14:13,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 444. [2021-11-23 03:14:13,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 327 states have (on average 1.4678899082568808) internal successors, (480), 335 states have internal predecessors, (480), 94 states have call successors, (94), 18 states have call predecessors, (94), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2021-11-23 03:14:13,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 668 transitions. [2021-11-23 03:14:13,282 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 668 transitions. Word has length 6 [2021-11-23 03:14:13,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:13,283 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 668 transitions. [2021-11-23 03:14:13,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:13,284 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 668 transitions. [2021-11-23 03:14:13,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 03:14:13,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:13,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:13,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:14:13,285 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:13,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:13,286 INFO L85 PathProgramCache]: Analyzing trace with hash 94210591, now seen corresponding path program 1 times [2021-11-23 03:14:13,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:13,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903625059] [2021-11-23 03:14:13,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:13,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:13,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:13,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:13,322 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:13,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903625059] [2021-11-23 03:14:13,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903625059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:13,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:13,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-11-23 03:14:13,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867931355] [2021-11-23 03:14:13,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:13,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:13,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:13,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:13,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:13,325 INFO L87 Difference]: Start difference. First operand 444 states and 668 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:13,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:13,552 INFO L93 Difference]: Finished difference Result 443 states and 667 transitions. [2021-11-23 03:14:13,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:13,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-23 03:14:13,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:13,561 INFO L225 Difference]: With dead ends: 443 [2021-11-23 03:14:13,561 INFO L226 Difference]: Without dead ends: 441 [2021-11-23 03:14:13,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:13,571 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 282 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:13,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 561 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:13,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2021-11-23 03:14:13,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 441. [2021-11-23 03:14:13,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 325 states have (on average 1.44) internal successors, (468), 332 states have internal predecessors, (468), 94 states have call successors, (94), 18 states have call predecessors, (94), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2021-11-23 03:14:13,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 656 transitions. [2021-11-23 03:14:13,612 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 656 transitions. Word has length 7 [2021-11-23 03:14:13,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:13,613 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 656 transitions. [2021-11-23 03:14:13,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:13,613 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 656 transitions. [2021-11-23 03:14:13,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 03:14:13,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:13,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:13,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:14:13,615 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:13,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:13,616 INFO L85 PathProgramCache]: Analyzing trace with hash 463763928, now seen corresponding path program 1 times [2021-11-23 03:14:13,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:13,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173670641] [2021-11-23 03:14:13,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:13,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:13,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:13,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:13,719 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:13,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173670641] [2021-11-23 03:14:13,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173670641] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:13,720 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:13,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:14:13,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073465818] [2021-11-23 03:14:13,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:13,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:13,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:13,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:13,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:13,722 INFO L87 Difference]: Start difference. First operand 441 states and 656 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:14,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:14,042 INFO L93 Difference]: Finished difference Result 550 states and 805 transitions. [2021-11-23 03:14:14,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:14,043 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 03:14:14,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:14,055 INFO L225 Difference]: With dead ends: 550 [2021-11-23 03:14:14,056 INFO L226 Difference]: Without dead ends: 550 [2021-11-23 03:14:14,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:14,068 INFO L933 BasicCegarLoop]: 477 mSDtfsCounter, 352 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:14,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 627 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:14:14,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-11-23 03:14:14,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 547. [2021-11-23 03:14:14,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 409 states have (on average 1.41320293398533) internal successors, (578), 409 states have internal predecessors, (578), 105 states have call successors, (105), 31 states have call predecessors, (105), 32 states have return successors, (120), 110 states have call predecessors, (120), 94 states have call successors, (120) [2021-11-23 03:14:14,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 803 transitions. [2021-11-23 03:14:14,114 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 803 transitions. Word has length 9 [2021-11-23 03:14:14,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:14,114 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 803 transitions. [2021-11-23 03:14:14,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:14,115 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 803 transitions. [2021-11-23 03:14:14,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 03:14:14,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:14,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:14,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:14:14,121 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:14,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:14,121 INFO L85 PathProgramCache]: Analyzing trace with hash 726524431, now seen corresponding path program 1 times [2021-11-23 03:14:14,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:14,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535164250] [2021-11-23 03:14:14,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:14,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:14,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:14,187 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:14,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535164250] [2021-11-23 03:14:14,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535164250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:14,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:14,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 03:14:14,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603160028] [2021-11-23 03:14:14,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:14,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:14,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:14,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:14,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:14,190 INFO L87 Difference]: Start difference. First operand 547 states and 803 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:14,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:14,359 INFO L93 Difference]: Finished difference Result 550 states and 805 transitions. [2021-11-23 03:14:14,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:14,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 03:14:14,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:14,369 INFO L225 Difference]: With dead ends: 550 [2021-11-23 03:14:14,369 INFO L226 Difference]: Without dead ends: 547 [2021-11-23 03:14:14,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:14,370 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 0 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:14,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 858 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:14:14,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-11-23 03:14:14,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 547. [2021-11-23 03:14:14,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 409 states have (on average 1.4107579462102688) internal successors, (577), 409 states have internal predecessors, (577), 105 states have call successors, (105), 31 states have call predecessors, (105), 32 states have return successors, (120), 110 states have call predecessors, (120), 94 states have call successors, (120) [2021-11-23 03:14:14,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 802 transitions. [2021-11-23 03:14:14,399 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 802 transitions. Word has length 11 [2021-11-23 03:14:14,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:14,399 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 802 transitions. [2021-11-23 03:14:14,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:14,400 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 802 transitions. [2021-11-23 03:14:14,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 03:14:14,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:14,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:14,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:14:14,401 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:14,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:14,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1955095559, now seen corresponding path program 1 times [2021-11-23 03:14:14,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:14,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470711254] [2021-11-23 03:14:14,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:14,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:14,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:14,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:14,449 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:14,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470711254] [2021-11-23 03:14:14,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470711254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:14,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:14,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:14:14,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274928057] [2021-11-23 03:14:14,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:14,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:14,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:14,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:14,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:14,451 INFO L87 Difference]: Start difference. First operand 547 states and 802 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:14,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:14,561 INFO L93 Difference]: Finished difference Result 604 states and 867 transitions. [2021-11-23 03:14:14,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:14,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-23 03:14:14,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:14,566 INFO L225 Difference]: With dead ends: 604 [2021-11-23 03:14:14,566 INFO L226 Difference]: Without dead ends: 604 [2021-11-23 03:14:14,566 INFO L932 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 [2021-11-23 03:14:14,567 INFO L933 BasicCegarLoop]: 435 mSDtfsCounter, 439 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:14,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [439 Valid, 560 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:14:14,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-11-23 03:14:14,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 578. [2021-11-23 03:14:14,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 435 states have (on average 1.4114942528735632) internal successors, (614), 437 states have internal predecessors, (614), 104 states have call successors, (104), 35 states have call predecessors, (104), 38 states have return successors, (120), 105 states have call predecessors, (120), 96 states have call successors, (120) [2021-11-23 03:14:14,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 838 transitions. [2021-11-23 03:14:14,592 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 838 transitions. Word has length 12 [2021-11-23 03:14:14,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:14,593 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 838 transitions. [2021-11-23 03:14:14,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:14,593 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 838 transitions. [2021-11-23 03:14:14,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:14:14,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:14,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:14,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:14:14,595 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:14,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:14,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1626709586, now seen corresponding path program 1 times [2021-11-23 03:14:14,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:14,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783146228] [2021-11-23 03:14:14,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:14,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:14,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:14,629 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:14,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783146228] [2021-11-23 03:14:14,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783146228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:14,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:14,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:14:14,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402510295] [2021-11-23 03:14:14,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:14,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:14,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:14,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:14,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:14,631 INFO L87 Difference]: Start difference. First operand 578 states and 838 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:14,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:14,898 INFO L93 Difference]: Finished difference Result 892 states and 1331 transitions. [2021-11-23 03:14:14,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:14,898 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 03:14:14,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:14,906 INFO L225 Difference]: With dead ends: 892 [2021-11-23 03:14:14,906 INFO L226 Difference]: Without dead ends: 892 [2021-11-23 03:14:14,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:14,907 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 229 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1018 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:14,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 1018 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:14,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2021-11-23 03:14:14,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 746. [2021-11-23 03:14:14,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 746 states, 567 states have (on average 1.4109347442680775) internal successors, (800), 569 states have internal predecessors, (800), 125 states have call successors, (125), 51 states have call predecessors, (125), 53 states have return successors, (206), 125 states have call predecessors, (206), 117 states have call successors, (206) [2021-11-23 03:14:14,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1131 transitions. [2021-11-23 03:14:14,966 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1131 transitions. Word has length 15 [2021-11-23 03:14:14,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:14,967 INFO L470 AbstractCegarLoop]: Abstraction has 746 states and 1131 transitions. [2021-11-23 03:14:14,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:14,967 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1131 transitions. [2021-11-23 03:14:14,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 03:14:14,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:14,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:14,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:14:14,969 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:14,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:14,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1350163222, now seen corresponding path program 1 times [2021-11-23 03:14:14,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:14,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429810758] [2021-11-23 03:14:14,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:14,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:14,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:15,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:15,048 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:15,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429810758] [2021-11-23 03:14:15,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429810758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:15,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:15,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:14:15,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979337573] [2021-11-23 03:14:15,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:15,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:14:15,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:15,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:14:15,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:14:15,050 INFO L87 Difference]: Start difference. First operand 746 states and 1131 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:15,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:15,479 INFO L93 Difference]: Finished difference Result 737 states and 1110 transitions. [2021-11-23 03:14:15,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:14:15,480 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-23 03:14:15,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:15,486 INFO L225 Difference]: With dead ends: 737 [2021-11-23 03:14:15,486 INFO L226 Difference]: Without dead ends: 737 [2021-11-23 03:14:15,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:14:15,487 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 658 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:15,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [659 Valid, 486 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:14:15,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2021-11-23 03:14:15,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 728. [2021-11-23 03:14:15,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 552 states have (on average 1.4003623188405796) internal successors, (773), 554 states have internal predecessors, (773), 122 states have call successors, (122), 48 states have call predecessors, (122), 53 states have return successors, (200), 125 states have call predecessors, (200), 114 states have call successors, (200) [2021-11-23 03:14:15,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 1095 transitions. [2021-11-23 03:14:15,520 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 1095 transitions. Word has length 16 [2021-11-23 03:14:15,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:15,520 INFO L470 AbstractCegarLoop]: Abstraction has 728 states and 1095 transitions. [2021-11-23 03:14:15,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:15,521 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 1095 transitions. [2021-11-23 03:14:15,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:14:15,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:15,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:15,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 03:14:15,523 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:15,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:15,523 INFO L85 PathProgramCache]: Analyzing trace with hash -2060069580, now seen corresponding path program 1 times [2021-11-23 03:14:15,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:15,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868891741] [2021-11-23 03:14:15,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:15,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:15,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:15,569 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:15,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868891741] [2021-11-23 03:14:15,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868891741] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:15,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:15,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:14:15,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694693446] [2021-11-23 03:14:15,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:15,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:15,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:15,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:15,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:15,571 INFO L87 Difference]: Start difference. First operand 728 states and 1095 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:15,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:15,712 INFO L93 Difference]: Finished difference Result 727 states and 1092 transitions. [2021-11-23 03:14:15,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:15,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 03:14:15,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:15,718 INFO L225 Difference]: With dead ends: 727 [2021-11-23 03:14:15,718 INFO L226 Difference]: Without dead ends: 727 [2021-11-23 03:14:15,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:15,719 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 7 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:15,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 801 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:14:15,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-11-23 03:14:15,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2021-11-23 03:14:15,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 552 states have (on average 1.3967391304347827) internal successors, (771), 553 states have internal predecessors, (771), 121 states have call successors, (121), 48 states have call predecessors, (121), 53 states have return successors, (200), 125 states have call predecessors, (200), 114 states have call successors, (200) [2021-11-23 03:14:15,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1092 transitions. [2021-11-23 03:14:15,750 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1092 transitions. Word has length 15 [2021-11-23 03:14:15,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:15,750 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 1092 transitions. [2021-11-23 03:14:15,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:15,750 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1092 transitions. [2021-11-23 03:14:15,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-23 03:14:15,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:15,753 INFO L514 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] [2021-11-23 03:14:15,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:14:15,754 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:15,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:15,754 INFO L85 PathProgramCache]: Analyzing trace with hash -642074245, now seen corresponding path program 1 times [2021-11-23 03:14:15,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:15,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601542531] [2021-11-23 03:14:15,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:15,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:15,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:15,787 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:15,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601542531] [2021-11-23 03:14:15,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601542531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:15,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:15,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:14:15,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639316343] [2021-11-23 03:14:15,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:15,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:14:15,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:15,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:14:15,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:14:15,790 INFO L87 Difference]: Start difference. First operand 727 states and 1092 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:16,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:16,207 INFO L93 Difference]: Finished difference Result 745 states and 1113 transitions. [2021-11-23 03:14:16,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:14:16,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-23 03:14:16,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:16,213 INFO L225 Difference]: With dead ends: 745 [2021-11-23 03:14:16,214 INFO L226 Difference]: Without dead ends: 745 [2021-11-23 03:14:16,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:14:16,215 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 502 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:16,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [502 Valid, 660 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:14:16,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2021-11-23 03:14:16,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 727. [2021-11-23 03:14:16,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 552 states have (on average 1.3931159420289856) internal successors, (769), 553 states have internal predecessors, (769), 121 states have call successors, (121), 48 states have call predecessors, (121), 53 states have return successors, (200), 125 states have call predecessors, (200), 114 states have call successors, (200) [2021-11-23 03:14:16,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1090 transitions. [2021-11-23 03:14:16,250 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1090 transitions. Word has length 22 [2021-11-23 03:14:16,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:16,251 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 1090 transitions. [2021-11-23 03:14:16,251 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:16,251 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1090 transitions. [2021-11-23 03:14:16,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 03:14:16,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:16,255 INFO L514 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] [2021-11-23 03:14:16,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 03:14:16,255 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:16,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:16,256 INFO L85 PathProgramCache]: Analyzing trace with hash 519718612, now seen corresponding path program 1 times [2021-11-23 03:14:16,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:16,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845235182] [2021-11-23 03:14:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:16,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:16,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:16,342 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:16,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845235182] [2021-11-23 03:14:16,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845235182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:16,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:16,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:14:16,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014822770] [2021-11-23 03:14:16,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:16,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:14:16,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:16,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:14:16,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:14:16,345 INFO L87 Difference]: Start difference. First operand 727 states and 1090 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:16,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:16,791 INFO L93 Difference]: Finished difference Result 727 states and 1088 transitions. [2021-11-23 03:14:16,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:14:16,792 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-23 03:14:16,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:16,797 INFO L225 Difference]: With dead ends: 727 [2021-11-23 03:14:16,798 INFO L226 Difference]: Without dead ends: 727 [2021-11-23 03:14:16,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:14:16,799 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 486 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:16,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [486 Valid, 655 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:14:16,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2021-11-23 03:14:16,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 727. [2021-11-23 03:14:16,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 552 states have (on average 1.3894927536231885) internal successors, (767), 553 states have internal predecessors, (767), 121 states have call successors, (121), 48 states have call predecessors, (121), 53 states have return successors, (200), 125 states have call predecessors, (200), 114 states have call successors, (200) [2021-11-23 03:14:16,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1088 transitions. [2021-11-23 03:14:16,828 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1088 transitions. Word has length 23 [2021-11-23 03:14:16,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:16,829 INFO L470 AbstractCegarLoop]: Abstraction has 727 states and 1088 transitions. [2021-11-23 03:14:16,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:16,829 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1088 transitions. [2021-11-23 03:14:16,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-23 03:14:16,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:16,832 INFO L514 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] [2021-11-23 03:14:16,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 03:14:16,832 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:16,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:16,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1382254518, now seen corresponding path program 1 times [2021-11-23 03:14:16,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:16,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140621457] [2021-11-23 03:14:16,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:16,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:16,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:16,860 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:16,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140621457] [2021-11-23 03:14:16,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140621457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:16,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:16,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:14:16,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084784403] [2021-11-23 03:14:16,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:16,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:16,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:16,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:16,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:16,863 INFO L87 Difference]: Start difference. First operand 727 states and 1088 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:17,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:17,036 INFO L93 Difference]: Finished difference Result 898 states and 1337 transitions. [2021-11-23 03:14:17,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:17,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-23 03:14:17,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:17,044 INFO L225 Difference]: With dead ends: 898 [2021-11-23 03:14:17,044 INFO L226 Difference]: Without dead ends: 898 [2021-11-23 03:14:17,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:17,045 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 101 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 848 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:17,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 848 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:17,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2021-11-23 03:14:17,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 757. [2021-11-23 03:14:17,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 579 states have (on average 1.374784110535406) internal successors, (796), 581 states have internal predecessors, (796), 121 states have call successors, (121), 48 states have call predecessors, (121), 56 states have return successors, (206), 127 states have call predecessors, (206), 114 states have call successors, (206) [2021-11-23 03:14:17,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1123 transitions. [2021-11-23 03:14:17,106 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1123 transitions. Word has length 24 [2021-11-23 03:14:17,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:17,107 INFO L470 AbstractCegarLoop]: Abstraction has 757 states and 1123 transitions. [2021-11-23 03:14:17,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:17,107 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1123 transitions. [2021-11-23 03:14:17,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 03:14:17,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:17,110 INFO L514 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] [2021-11-23 03:14:17,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 03:14:17,111 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:17,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:17,112 INFO L85 PathProgramCache]: Analyzing trace with hash -2082667907, now seen corresponding path program 1 times [2021-11-23 03:14:17,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:17,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661101121] [2021-11-23 03:14:17,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:17,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:17,152 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:17,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661101121] [2021-11-23 03:14:17,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661101121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:17,152 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:17,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:14:17,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769606799] [2021-11-23 03:14:17,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:17,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:14:17,154 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:17,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:14:17,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:14:17,154 INFO L87 Difference]: Start difference. First operand 757 states and 1123 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:14:17,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:17,489 INFO L93 Difference]: Finished difference Result 688 states and 1001 transitions. [2021-11-23 03:14:17,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:14:17,489 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-11-23 03:14:17,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:17,494 INFO L225 Difference]: With dead ends: 688 [2021-11-23 03:14:17,494 INFO L226 Difference]: Without dead ends: 688 [2021-11-23 03:14:17,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:14:17,495 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 525 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:17,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 768 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:14:17,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-11-23 03:14:17,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 631. [2021-11-23 03:14:17,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 482 states have (on average 1.3589211618257262) internal successors, (655), 485 states have internal predecessors, (655), 103 states have call successors, (103), 40 states have call predecessors, (103), 45 states have return successors, (142), 105 states have call predecessors, (142), 96 states have call successors, (142) [2021-11-23 03:14:17,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 900 transitions. [2021-11-23 03:14:17,521 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 900 transitions. Word has length 28 [2021-11-23 03:14:17,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:17,522 INFO L470 AbstractCegarLoop]: Abstraction has 631 states and 900 transitions. [2021-11-23 03:14:17,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:14:17,522 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 900 transitions. [2021-11-23 03:14:17,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-23 03:14:17,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:17,525 INFO L514 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] [2021-11-23 03:14:17,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 03:14:17,525 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:17,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:17,526 INFO L85 PathProgramCache]: Analyzing trace with hash 749083288, now seen corresponding path program 1 times [2021-11-23 03:14:17,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:17,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960877501] [2021-11-23 03:14:17,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:17,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:17,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:17,555 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:17,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960877501] [2021-11-23 03:14:17,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960877501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:17,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:17,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:14:17,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096518004] [2021-11-23 03:14:17,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:17,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:17,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:17,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:17,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:17,557 INFO L87 Difference]: Start difference. First operand 631 states and 900 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:14:17,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:17,684 INFO L93 Difference]: Finished difference Result 560 states and 776 transitions. [2021-11-23 03:14:17,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:17,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-11-23 03:14:17,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:17,688 INFO L225 Difference]: With dead ends: 560 [2021-11-23 03:14:17,688 INFO L226 Difference]: Without dead ends: 560 [2021-11-23 03:14:17,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:17,689 INFO L933 BasicCegarLoop]: 471 mSDtfsCounter, 115 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:17,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 835 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:14:17,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-11-23 03:14:17,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 530. [2021-11-23 03:14:17,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 404 states have (on average 1.3465346534653466) internal successors, (544), 411 states have internal predecessors, (544), 90 states have call successors, (90), 31 states have call predecessors, (90), 35 states have return successors, (109), 87 states have call predecessors, (109), 83 states have call successors, (109) [2021-11-23 03:14:17,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 743 transitions. [2021-11-23 03:14:17,709 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 743 transitions. Word has length 28 [2021-11-23 03:14:17,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:17,709 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 743 transitions. [2021-11-23 03:14:17,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:14:17,710 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 743 transitions. [2021-11-23 03:14:17,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 03:14:17,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:17,712 INFO L514 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] [2021-11-23 03:14:17,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 03:14:17,712 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:17,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:17,713 INFO L85 PathProgramCache]: Analyzing trace with hash 344716526, now seen corresponding path program 1 times [2021-11-23 03:14:17,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:17,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964241461] [2021-11-23 03:14:17,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:17,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:17,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:17,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:17,746 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:17,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964241461] [2021-11-23 03:14:17,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964241461] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:17,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:17,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:14:17,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455950727] [2021-11-23 03:14:17,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:17,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:14:17,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:17,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:14:17,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:14:17,749 INFO L87 Difference]: Start difference. First operand 530 states and 743 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:18,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:18,168 INFO L93 Difference]: Finished difference Result 605 states and 854 transitions. [2021-11-23 03:14:18,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:14:18,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-23 03:14:18,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:18,185 INFO L225 Difference]: With dead ends: 605 [2021-11-23 03:14:18,185 INFO L226 Difference]: Without dead ends: 605 [2021-11-23 03:14:18,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:14:18,187 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 555 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:18,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 701 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:14:18,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-11-23 03:14:18,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 533. [2021-11-23 03:14:18,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 407 states have (on average 1.3464373464373465) internal successors, (548), 414 states have internal predecessors, (548), 90 states have call successors, (90), 31 states have call predecessors, (90), 35 states have return successors, (109), 87 states have call predecessors, (109), 83 states have call successors, (109) [2021-11-23 03:14:18,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 747 transitions. [2021-11-23 03:14:18,206 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 747 transitions. Word has length 25 [2021-11-23 03:14:18,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:18,206 INFO L470 AbstractCegarLoop]: Abstraction has 533 states and 747 transitions. [2021-11-23 03:14:18,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:18,207 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 747 transitions. [2021-11-23 03:14:18,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-23 03:14:18,209 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:18,209 INFO L514 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] [2021-11-23 03:14:18,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 03:14:18,209 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:18,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:18,210 INFO L85 PathProgramCache]: Analyzing trace with hash 344993356, now seen corresponding path program 1 times [2021-11-23 03:14:18,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:18,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906481334] [2021-11-23 03:14:18,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:18,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:18,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:18,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:18,349 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:18,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906481334] [2021-11-23 03:14:18,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906481334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:18,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:18,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:14:18,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185104742] [2021-11-23 03:14:18,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:18,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:14:18,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:18,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:14:18,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:14:18,352 INFO L87 Difference]: Start difference. First operand 533 states and 747 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:18,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:18,597 INFO L93 Difference]: Finished difference Result 542 states and 755 transitions. [2021-11-23 03:14:18,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:14:18,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-23 03:14:18,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:18,602 INFO L225 Difference]: With dead ends: 542 [2021-11-23 03:14:18,602 INFO L226 Difference]: Without dead ends: 524 [2021-11-23 03:14:18,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:14:18,603 INFO L933 BasicCegarLoop]: 419 mSDtfsCounter, 10 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:18,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1664 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:18,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2021-11-23 03:14:18,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2021-11-23 03:14:18,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 398 states have (on average 1.3517587939698492) internal successors, (538), 405 states have internal predecessors, (538), 90 states have call successors, (90), 31 states have call predecessors, (90), 35 states have return successors, (109), 87 states have call predecessors, (109), 83 states have call successors, (109) [2021-11-23 03:14:18,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 737 transitions. [2021-11-23 03:14:18,624 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 737 transitions. Word has length 25 [2021-11-23 03:14:18,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:18,624 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 737 transitions. [2021-11-23 03:14:18,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:18,624 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 737 transitions. [2021-11-23 03:14:18,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 03:14:18,626 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:18,627 INFO L514 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] [2021-11-23 03:14:18,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 03:14:18,627 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:18,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:18,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1894027271, now seen corresponding path program 1 times [2021-11-23 03:14:18,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:18,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822790362] [2021-11-23 03:14:18,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:18,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:18,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:18,657 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:18,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822790362] [2021-11-23 03:14:18,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822790362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:18,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:18,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:14:18,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873145933] [2021-11-23 03:14:18,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:18,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:18,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:18,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:18,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:18,660 INFO L87 Difference]: Start difference. First operand 524 states and 737 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:14:18,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:18,786 INFO L93 Difference]: Finished difference Result 542 states and 756 transitions. [2021-11-23 03:14:18,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:18,787 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-11-23 03:14:18,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:18,790 INFO L225 Difference]: With dead ends: 542 [2021-11-23 03:14:18,791 INFO L226 Difference]: Without dead ends: 540 [2021-11-23 03:14:18,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:18,792 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 60 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:18,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 748 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:14:18,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-11-23 03:14:18,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 536. [2021-11-23 03:14:18,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 410 states have (on average 1.3463414634146342) internal successors, (552), 417 states have internal predecessors, (552), 90 states have call successors, (90), 31 states have call predecessors, (90), 35 states have return successors, (109), 87 states have call predecessors, (109), 83 states have call successors, (109) [2021-11-23 03:14:18,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 751 transitions. [2021-11-23 03:14:18,810 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 751 transitions. Word has length 27 [2021-11-23 03:14:18,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:18,811 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 751 transitions. [2021-11-23 03:14:18,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:14:18,811 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 751 transitions. [2021-11-23 03:14:18,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 03:14:18,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:18,813 INFO L514 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] [2021-11-23 03:14:18,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 03:14:18,814 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:18,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:18,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1509671535, now seen corresponding path program 1 times [2021-11-23 03:14:18,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:18,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283342594] [2021-11-23 03:14:18,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:18,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:18,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:18,843 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:18,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283342594] [2021-11-23 03:14:18,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283342594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:18,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:18,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:14:18,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45309204] [2021-11-23 03:14:18,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:18,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:18,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:18,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:18,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:18,846 INFO L87 Difference]: Start difference. First operand 536 states and 751 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:14:18,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:18,934 INFO L93 Difference]: Finished difference Result 550 states and 761 transitions. [2021-11-23 03:14:18,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:18,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-11-23 03:14:18,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:18,938 INFO L225 Difference]: With dead ends: 550 [2021-11-23 03:14:18,938 INFO L226 Difference]: Without dead ends: 550 [2021-11-23 03:14:18,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:18,939 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 409 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:18,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 514 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:14:18,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-11-23 03:14:18,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 533. [2021-11-23 03:14:18,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 408 states have (on average 1.3431372549019607) internal successors, (548), 414 states have internal predecessors, (548), 90 states have call successors, (90), 31 states have call predecessors, (90), 34 states have return successors, (105), 87 states have call predecessors, (105), 83 states have call successors, (105) [2021-11-23 03:14:18,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 743 transitions. [2021-11-23 03:14:18,961 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 743 transitions. Word has length 29 [2021-11-23 03:14:18,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:18,962 INFO L470 AbstractCegarLoop]: Abstraction has 533 states and 743 transitions. [2021-11-23 03:14:18,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:14:18,962 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 743 transitions. [2021-11-23 03:14:18,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-23 03:14:18,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:18,964 INFO L514 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] [2021-11-23 03:14:18,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 03:14:18,964 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:18,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:18,967 INFO L85 PathProgramCache]: Analyzing trace with hash -642455764, now seen corresponding path program 1 times [2021-11-23 03:14:18,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:18,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336183074] [2021-11-23 03:14:18,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:18,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:19,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:19,021 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:19,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336183074] [2021-11-23 03:14:19,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336183074] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:19,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:19,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:14:19,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812961637] [2021-11-23 03:14:19,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:19,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:14:19,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:19,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:14:19,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:14:19,029 INFO L87 Difference]: Start difference. First operand 533 states and 743 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:14:19,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:19,473 INFO L93 Difference]: Finished difference Result 537 states and 745 transitions. [2021-11-23 03:14:19,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:14:19,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-11-23 03:14:19,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:19,477 INFO L225 Difference]: With dead ends: 537 [2021-11-23 03:14:19,477 INFO L226 Difference]: Without dead ends: 537 [2021-11-23 03:14:19,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:14:19,478 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 532 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:19,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [556 Valid, 842 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:14:19,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-11-23 03:14:19,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 533. [2021-11-23 03:14:19,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 408 states have (on average 1.3406862745098038) internal successors, (547), 414 states have internal predecessors, (547), 90 states have call successors, (90), 31 states have call predecessors, (90), 34 states have return successors, (105), 87 states have call predecessors, (105), 83 states have call successors, (105) [2021-11-23 03:14:19,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 742 transitions. [2021-11-23 03:14:19,497 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 742 transitions. Word has length 29 [2021-11-23 03:14:19,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:19,498 INFO L470 AbstractCegarLoop]: Abstraction has 533 states and 742 transitions. [2021-11-23 03:14:19,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:14:19,498 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 742 transitions. [2021-11-23 03:14:19,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-23 03:14:19,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:19,500 INFO L514 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] [2021-11-23 03:14:19,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 03:14:19,501 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:19,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:19,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1871765062, now seen corresponding path program 1 times [2021-11-23 03:14:19,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:19,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512533182] [2021-11-23 03:14:19,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:19,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:19,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:19,547 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:19,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512533182] [2021-11-23 03:14:19,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512533182] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:19,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:19,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:14:19,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135558024] [2021-11-23 03:14:19,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:19,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:14:19,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:19,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:14:19,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:14:19,550 INFO L87 Difference]: Start difference. First operand 533 states and 742 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:14:19,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:19,837 INFO L93 Difference]: Finished difference Result 549 states and 758 transitions. [2021-11-23 03:14:19,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:14:19,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-11-23 03:14:19,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:19,841 INFO L225 Difference]: With dead ends: 549 [2021-11-23 03:14:19,842 INFO L226 Difference]: Without dead ends: 528 [2021-11-23 03:14:19,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:14:19,842 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 38 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2001 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:19,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 2001 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:19,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-23 03:14:19,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2021-11-23 03:14:19,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 405 states have (on average 1.3185185185185184) internal successors, (534), 411 states have internal predecessors, (534), 88 states have call successors, (88), 31 states have call predecessors, (88), 34 states have return successors, (103), 85 states have call predecessors, (103), 81 states have call successors, (103) [2021-11-23 03:14:19,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 725 transitions. [2021-11-23 03:14:19,863 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 725 transitions. Word has length 30 [2021-11-23 03:14:19,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:19,863 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 725 transitions. [2021-11-23 03:14:19,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:14:19,864 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 725 transitions. [2021-11-23 03:14:19,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 03:14:19,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:19,866 INFO L514 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, 1] [2021-11-23 03:14:19,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 03:14:19,866 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:19,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:19,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1200573299, now seen corresponding path program 1 times [2021-11-23 03:14:19,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:19,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186545843] [2021-11-23 03:14:19,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:19,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:19,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:19,949 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:19,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186545843] [2021-11-23 03:14:19,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186545843] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:19,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:19,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 03:14:19,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437564419] [2021-11-23 03:14:19,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:19,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:14:19,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:19,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:14:19,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:14:19,951 INFO L87 Difference]: Start difference. First operand 528 states and 725 transitions. Second operand has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:20,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:20,355 INFO L93 Difference]: Finished difference Result 557 states and 754 transitions. [2021-11-23 03:14:20,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:14:20,356 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2021-11-23 03:14:20,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:20,359 INFO L225 Difference]: With dead ends: 557 [2021-11-23 03:14:20,359 INFO L226 Difference]: Without dead ends: 542 [2021-11-23 03:14:20,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:14:20,360 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 38 mSDsluCounter, 3183 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 3190 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:20,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 3190 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:14:20,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-11-23 03:14:20,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 526. [2021-11-23 03:14:20,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 404 states have (on average 1.316831683168317) internal successors, (532), 410 states have internal predecessors, (532), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (102), 84 states have call predecessors, (102), 80 states have call successors, (102) [2021-11-23 03:14:20,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 721 transitions. [2021-11-23 03:14:20,379 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 721 transitions. Word has length 36 [2021-11-23 03:14:20,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:20,379 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 721 transitions. [2021-11-23 03:14:20,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 8 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:20,379 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 721 transitions. [2021-11-23 03:14:20,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 03:14:20,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:20,381 INFO L514 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] [2021-11-23 03:14:20,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 03:14:20,382 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:20,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:20,382 INFO L85 PathProgramCache]: Analyzing trace with hash -514714199, now seen corresponding path program 1 times [2021-11-23 03:14:20,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:20,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729025085] [2021-11-23 03:14:20,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:20,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:20,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:20,474 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:20,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729025085] [2021-11-23 03:14:20,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729025085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:20,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:20,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 03:14:20,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383184691] [2021-11-23 03:14:20,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:20,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:14:20,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:20,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:14:20,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:14:20,477 INFO L87 Difference]: Start difference. First operand 526 states and 721 transitions. Second operand has 9 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:20,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:20,868 INFO L93 Difference]: Finished difference Result 541 states and 736 transitions. [2021-11-23 03:14:20,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:14:20,870 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2021-11-23 03:14:20,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:20,873 INFO L225 Difference]: With dead ends: 541 [2021-11-23 03:14:20,873 INFO L226 Difference]: Without dead ends: 525 [2021-11-23 03:14:20,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:14:20,874 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 36 mSDsluCounter, 3041 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 3037 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:20,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 3037 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:14:20,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-11-23 03:14:20,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 525. [2021-11-23 03:14:20,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 403 states have (on average 1.2928039702233252) internal successors, (521), 409 states have internal predecessors, (521), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (102), 84 states have call predecessors, (102), 80 states have call successors, (102) [2021-11-23 03:14:20,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 710 transitions. [2021-11-23 03:14:20,890 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 710 transitions. Word has length 33 [2021-11-23 03:14:20,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:20,891 INFO L470 AbstractCegarLoop]: Abstraction has 525 states and 710 transitions. [2021-11-23 03:14:20,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:20,891 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 710 transitions. [2021-11-23 03:14:20,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 03:14:20,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:20,893 INFO L514 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] [2021-11-23 03:14:20,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 03:14:20,895 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:20,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:20,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1582347793, now seen corresponding path program 1 times [2021-11-23 03:14:20,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:20,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743873107] [2021-11-23 03:14:20,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:20,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:20,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:20,924 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:20,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743873107] [2021-11-23 03:14:20,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743873107] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:20,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:20,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:14:20,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051007429] [2021-11-23 03:14:20,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:20,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:20,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:20,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:20,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:20,926 INFO L87 Difference]: Start difference. First operand 525 states and 710 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:21,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:21,043 INFO L93 Difference]: Finished difference Result 505 states and 682 transitions. [2021-11-23 03:14:21,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:21,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2021-11-23 03:14:21,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:21,051 INFO L225 Difference]: With dead ends: 505 [2021-11-23 03:14:21,052 INFO L226 Difference]: Without dead ends: 505 [2021-11-23 03:14:21,052 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:21,053 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 0 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:21,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 733 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:14:21,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2021-11-23 03:14:21,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 505. [2021-11-23 03:14:21,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 386 states have (on average 1.2849740932642486) internal successors, (496), 391 states have internal predecessors, (496), 86 states have call successors, (86), 31 states have call predecessors, (86), 32 states have return successors, (100), 82 states have call predecessors, (100), 80 states have call successors, (100) [2021-11-23 03:14:21,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 682 transitions. [2021-11-23 03:14:21,072 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 682 transitions. Word has length 34 [2021-11-23 03:14:21,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:21,073 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 682 transitions. [2021-11-23 03:14:21,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:21,074 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 682 transitions. [2021-11-23 03:14:21,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-23 03:14:21,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:21,076 INFO L514 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] [2021-11-23 03:14:21,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-23 03:14:21,077 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:21,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:21,078 INFO L85 PathProgramCache]: Analyzing trace with hash 363174257, now seen corresponding path program 1 times [2021-11-23 03:14:21,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:21,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835480129] [2021-11-23 03:14:21,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:21,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:21,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:21,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:21,129 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:21,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835480129] [2021-11-23 03:14:21,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835480129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:21,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:21,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:14:21,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764905381] [2021-11-23 03:14:21,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:21,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:14:21,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:21,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:14:21,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:14:21,132 INFO L87 Difference]: Start difference. First operand 505 states and 682 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:14:21,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:21,354 INFO L93 Difference]: Finished difference Result 518 states and 694 transitions. [2021-11-23 03:14:21,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:14:21,355 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2021-11-23 03:14:21,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:21,358 INFO L225 Difference]: With dead ends: 518 [2021-11-23 03:14:21,358 INFO L226 Difference]: Without dead ends: 499 [2021-11-23 03:14:21,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:14:21,360 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 38 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:21,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 1846 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:21,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-11-23 03:14:21,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2021-11-23 03:14:21,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 383 states have (on average 1.279373368146214) internal successors, (490), 388 states have internal predecessors, (490), 83 states have call successors, (83), 31 states have call predecessors, (83), 32 states have return successors, (97), 79 states have call predecessors, (97), 77 states have call successors, (97) [2021-11-23 03:14:21,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 670 transitions. [2021-11-23 03:14:21,377 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 670 transitions. Word has length 33 [2021-11-23 03:14:21,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:21,377 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 670 transitions. [2021-11-23 03:14:21,377 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:14:21,377 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 670 transitions. [2021-11-23 03:14:21,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-23 03:14:21,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:21,379 INFO L514 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, 1, 1, 1, 1, 1] [2021-11-23 03:14:21,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-23 03:14:21,380 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:21,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:21,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1691462470, now seen corresponding path program 1 times [2021-11-23 03:14:21,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:21,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168674218] [2021-11-23 03:14:21,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:21,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:21,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:21,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:21,496 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:21,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168674218] [2021-11-23 03:14:21,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168674218] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:21,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:21,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 03:14:21,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43177682] [2021-11-23 03:14:21,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:21,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:14:21,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:21,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:14:21,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:14:21,499 INFO L87 Difference]: Start difference. First operand 499 states and 670 transitions. Second operand has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 03:14:21,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:21,861 INFO L93 Difference]: Finished difference Result 526 states and 696 transitions. [2021-11-23 03:14:21,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:14:21,862 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 40 [2021-11-23 03:14:21,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:21,865 INFO L225 Difference]: With dead ends: 526 [2021-11-23 03:14:21,865 INFO L226 Difference]: Without dead ends: 511 [2021-11-23 03:14:21,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:14:21,866 INFO L933 BasicCegarLoop]: 373 mSDtfsCounter, 39 mSDsluCounter, 2908 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 2907 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:21,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 2907 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:14:21,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2021-11-23 03:14:21,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 497. [2021-11-23 03:14:21,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 497 states, 382 states have (on average 1.2774869109947644) internal successors, (488), 387 states have internal predecessors, (488), 82 states have call successors, (82), 31 states have call predecessors, (82), 32 states have return successors, (96), 78 states have call predecessors, (96), 76 states have call successors, (96) [2021-11-23 03:14:21,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497 states to 497 states and 666 transitions. [2021-11-23 03:14:21,881 INFO L78 Accepts]: Start accepts. Automaton has 497 states and 666 transitions. Word has length 40 [2021-11-23 03:14:21,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:21,881 INFO L470 AbstractCegarLoop]: Abstraction has 497 states and 666 transitions. [2021-11-23 03:14:21,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.714285714285714) internal successors, (33), 8 states have internal predecessors, (33), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 03:14:21,882 INFO L276 IsEmpty]: Start isEmpty. Operand 497 states and 666 transitions. [2021-11-23 03:14:21,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 03:14:21,884 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:21,884 INFO L514 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] [2021-11-23 03:14:21,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-23 03:14:21,884 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:21,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:21,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1742708472, now seen corresponding path program 1 times [2021-11-23 03:14:21,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:21,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560031491] [2021-11-23 03:14:21,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:21,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:21,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:21,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:21,979 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:21,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560031491] [2021-11-23 03:14:21,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560031491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:21,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:21,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 03:14:21,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376709195] [2021-11-23 03:14:21,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:21,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:14:21,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:21,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:14:21,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:14:21,982 INFO L87 Difference]: Start difference. First operand 497 states and 666 transitions. Second operand has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:22,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:22,360 INFO L93 Difference]: Finished difference Result 524 states and 692 transitions. [2021-11-23 03:14:22,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:14:22,361 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2021-11-23 03:14:22,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:22,364 INFO L225 Difference]: With dead ends: 524 [2021-11-23 03:14:22,364 INFO L226 Difference]: Without dead ends: 509 [2021-11-23 03:14:22,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:14:22,366 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 50 mSDsluCounter, 2897 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 2887 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:22,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 2887 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:14:22,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2021-11-23 03:14:22,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 495. [2021-11-23 03:14:22,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 381 states have (on average 1.2755905511811023) internal successors, (486), 386 states have internal predecessors, (486), 81 states have call successors, (81), 31 states have call predecessors, (81), 32 states have return successors, (95), 77 states have call predecessors, (95), 75 states have call successors, (95) [2021-11-23 03:14:22,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 662 transitions. [2021-11-23 03:14:22,398 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 662 transitions. Word has length 35 [2021-11-23 03:14:22,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:22,398 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 662 transitions. [2021-11-23 03:14:22,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 8 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:22,400 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 662 transitions. [2021-11-23 03:14:22,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 03:14:22,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:22,402 INFO L514 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] [2021-11-23 03:14:22,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-23 03:14:22,402 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:22,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:22,403 INFO L85 PathProgramCache]: Analyzing trace with hash -364906511, now seen corresponding path program 1 times [2021-11-23 03:14:22,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:22,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761048906] [2021-11-23 03:14:22,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:22,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:22,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:22,452 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:22,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761048906] [2021-11-23 03:14:22,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761048906] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:22,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:22,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:14:22,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848983126] [2021-11-23 03:14:22,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:22,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:14:22,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:22,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:14:22,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:14:22,454 INFO L87 Difference]: Start difference. First operand 495 states and 662 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:14:22,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:22,683 INFO L93 Difference]: Finished difference Result 512 states and 679 transitions. [2021-11-23 03:14:22,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:14:22,684 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2021-11-23 03:14:22,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:22,687 INFO L225 Difference]: With dead ends: 512 [2021-11-23 03:14:22,687 INFO L226 Difference]: Without dead ends: 491 [2021-11-23 03:14:22,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:14:22,688 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 40 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:22,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 1780 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:22,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-11-23 03:14:22,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2021-11-23 03:14:22,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 379 states have (on average 1.266490765171504) internal successors, (480), 384 states have internal predecessors, (480), 79 states have call successors, (79), 31 states have call predecessors, (79), 32 states have return successors, (93), 75 states have call predecessors, (93), 73 states have call successors, (93) [2021-11-23 03:14:22,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 652 transitions. [2021-11-23 03:14:22,703 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 652 transitions. Word has length 34 [2021-11-23 03:14:22,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:22,703 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 652 transitions. [2021-11-23 03:14:22,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:14:22,704 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 652 transitions. [2021-11-23 03:14:22,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 03:14:22,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:22,707 INFO L514 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] [2021-11-23 03:14:22,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-23 03:14:22,707 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:22,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:22,708 INFO L85 PathProgramCache]: Analyzing trace with hash -565025785, now seen corresponding path program 1 times [2021-11-23 03:14:22,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:22,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920515685] [2021-11-23 03:14:22,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:22,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:22,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:22,816 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:22,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920515685] [2021-11-23 03:14:22,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920515685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:22,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:22,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 03:14:22,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828169379] [2021-11-23 03:14:22,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:22,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:14:22,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:22,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:14:22,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:14:22,820 INFO L87 Difference]: Start difference. First operand 491 states and 652 transitions. Second operand has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:23,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:23,163 INFO L93 Difference]: Finished difference Result 501 states and 661 transitions. [2021-11-23 03:14:23,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:14:23,164 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2021-11-23 03:14:23,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:23,167 INFO L225 Difference]: With dead ends: 501 [2021-11-23 03:14:23,167 INFO L226 Difference]: Without dead ends: 489 [2021-11-23 03:14:23,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:14:23,168 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 10 mSDsluCounter, 2751 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2768 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:23,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2768 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:14:23,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-11-23 03:14:23,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 489. [2021-11-23 03:14:23,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 378 states have (on average 1.2645502645502646) internal successors, (478), 383 states have internal predecessors, (478), 78 states have call successors, (78), 31 states have call predecessors, (78), 32 states have return successors, (92), 74 states have call predecessors, (92), 72 states have call successors, (92) [2021-11-23 03:14:23,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 648 transitions. [2021-11-23 03:14:23,185 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 648 transitions. Word has length 35 [2021-11-23 03:14:23,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:23,186 INFO L470 AbstractCegarLoop]: Abstraction has 489 states and 648 transitions. [2021-11-23 03:14:23,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:23,186 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 648 transitions. [2021-11-23 03:14:23,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 03:14:23,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:23,188 INFO L514 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, 1] [2021-11-23 03:14:23,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-23 03:14:23,189 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:23,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:23,189 INFO L85 PathProgramCache]: Analyzing trace with hash -615535555, now seen corresponding path program 1 times [2021-11-23 03:14:23,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:23,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182321266] [2021-11-23 03:14:23,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:23,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:23,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:23,316 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:23,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182321266] [2021-11-23 03:14:23,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182321266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:23,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:23,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 03:14:23,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408044989] [2021-11-23 03:14:23,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:23,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:14:23,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:23,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:14:23,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:14:23,318 INFO L87 Difference]: Start difference. First operand 489 states and 648 transitions. Second operand has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:23,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:23,703 INFO L93 Difference]: Finished difference Result 499 states and 657 transitions. [2021-11-23 03:14:23,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:14:23,704 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2021-11-23 03:14:23,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:23,707 INFO L225 Difference]: With dead ends: 499 [2021-11-23 03:14:23,707 INFO L226 Difference]: Without dead ends: 487 [2021-11-23 03:14:23,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:14:23,709 INFO L933 BasicCegarLoop]: 354 mSDtfsCounter, 10 mSDsluCounter, 2714 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2725 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:23,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2725 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:14:23,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-11-23 03:14:23,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 487. [2021-11-23 03:14:23,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 377 states have (on average 1.2625994694960212) internal successors, (476), 382 states have internal predecessors, (476), 77 states have call successors, (77), 31 states have call predecessors, (77), 32 states have return successors, (91), 73 states have call predecessors, (91), 71 states have call successors, (91) [2021-11-23 03:14:23,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 644 transitions. [2021-11-23 03:14:23,729 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 644 transitions. Word has length 36 [2021-11-23 03:14:23,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:23,729 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 644 transitions. [2021-11-23 03:14:23,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:23,729 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 644 transitions. [2021-11-23 03:14:23,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 03:14:23,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:23,732 INFO L514 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, 1] [2021-11-23 03:14:23,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-23 03:14:23,732 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:23,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:23,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1916364698, now seen corresponding path program 1 times [2021-11-23 03:14:23,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:23,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219992102] [2021-11-23 03:14:23,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:23,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:23,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:23,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:23,844 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:23,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219992102] [2021-11-23 03:14:23,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219992102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:23,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:23,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 03:14:23,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074268111] [2021-11-23 03:14:23,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:23,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:14:23,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:23,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:14:23,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:14:23,847 INFO L87 Difference]: Start difference. First operand 487 states and 644 transitions. Second operand has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:24,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:24,176 INFO L93 Difference]: Finished difference Result 496 states and 652 transitions. [2021-11-23 03:14:24,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:14:24,177 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2021-11-23 03:14:24,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:24,180 INFO L225 Difference]: With dead ends: 496 [2021-11-23 03:14:24,180 INFO L226 Difference]: Without dead ends: 484 [2021-11-23 03:14:24,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:14:24,181 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 10 mSDsluCounter, 2690 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2703 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:24,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2703 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:14:24,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-11-23 03:14:24,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2021-11-23 03:14:24,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 375 states have (on average 1.2613333333333334) internal successors, (473), 380 states have internal predecessors, (473), 76 states have call successors, (76), 31 states have call predecessors, (76), 32 states have return successors, (90), 72 states have call predecessors, (90), 70 states have call successors, (90) [2021-11-23 03:14:24,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 639 transitions. [2021-11-23 03:14:24,196 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 639 transitions. Word has length 36 [2021-11-23 03:14:24,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:24,197 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 639 transitions. [2021-11-23 03:14:24,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:24,197 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 639 transitions. [2021-11-23 03:14:24,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 03:14:24,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:24,199 INFO L514 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, 1] [2021-11-23 03:14:24,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-23 03:14:24,200 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:24,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:24,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1703217503, now seen corresponding path program 1 times [2021-11-23 03:14:24,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:24,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080717181] [2021-11-23 03:14:24,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:24,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:24,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:24,235 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:24,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080717181] [2021-11-23 03:14:24,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080717181] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:24,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:24,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:14:24,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465407922] [2021-11-23 03:14:24,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:24,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:14:24,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:24,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:14:24,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:14:24,237 INFO L87 Difference]: Start difference. First operand 484 states and 639 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:24,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:24,386 INFO L93 Difference]: Finished difference Result 512 states and 683 transitions. [2021-11-23 03:14:24,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:14:24,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2021-11-23 03:14:24,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:24,390 INFO L225 Difference]: With dead ends: 512 [2021-11-23 03:14:24,390 INFO L226 Difference]: Without dead ends: 512 [2021-11-23 03:14:24,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:14:24,391 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 15 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:24,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 1368 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:14:24,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-11-23 03:14:24,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 494. [2021-11-23 03:14:24,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 381 states have (on average 1.2572178477690288) internal successors, (479), 389 states have internal predecessors, (479), 76 states have call successors, (76), 31 states have call predecessors, (76), 36 states have return successors, (109), 73 states have call predecessors, (109), 70 states have call successors, (109) [2021-11-23 03:14:24,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 664 transitions. [2021-11-23 03:14:24,407 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 664 transitions. Word has length 36 [2021-11-23 03:14:24,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:24,408 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 664 transitions. [2021-11-23 03:14:24,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 4 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:24,408 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 664 transitions. [2021-11-23 03:14:24,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 03:14:24,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:24,410 INFO L514 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, 1] [2021-11-23 03:14:24,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-23 03:14:24,411 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:24,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:24,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1191813034, now seen corresponding path program 1 times [2021-11-23 03:14:24,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:24,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906212459] [2021-11-23 03:14:24,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:24,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:24,462 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:24,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906212459] [2021-11-23 03:14:24,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906212459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:24,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:24,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:14:24,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243230413] [2021-11-23 03:14:24,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:24,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:14:24,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:24,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:14:24,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:14:24,465 INFO L87 Difference]: Start difference. First operand 494 states and 664 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:24,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:24,662 INFO L93 Difference]: Finished difference Result 507 states and 676 transitions. [2021-11-23 03:14:24,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:14:24,663 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2021-11-23 03:14:24,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:24,667 INFO L225 Difference]: With dead ends: 507 [2021-11-23 03:14:24,668 INFO L226 Difference]: Without dead ends: 490 [2021-11-23 03:14:24,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:14:24,670 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 36 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1709 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:24,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 1709 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:24,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-11-23 03:14:24,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2021-11-23 03:14:24,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 378 states have (on average 1.2566137566137565) internal successors, (475), 387 states have internal predecessors, (475), 75 states have call successors, (75), 31 states have call predecessors, (75), 36 states have return successors, (107), 71 states have call predecessors, (107), 69 states have call successors, (107) [2021-11-23 03:14:24,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 657 transitions. [2021-11-23 03:14:24,688 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 657 transitions. Word has length 36 [2021-11-23 03:14:24,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:24,689 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 657 transitions. [2021-11-23 03:14:24,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:24,689 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 657 transitions. [2021-11-23 03:14:24,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 03:14:24,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:24,691 INFO L514 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, 1, 1] [2021-11-23 03:14:24,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-23 03:14:24,692 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:24,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:24,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1116501047, now seen corresponding path program 1 times [2021-11-23 03:14:24,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:24,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316482917] [2021-11-23 03:14:24,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:24,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:24,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:24,736 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:24,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316482917] [2021-11-23 03:14:24,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316482917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:24,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:24,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:14:24,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615550038] [2021-11-23 03:14:24,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:24,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:14:24,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:24,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:14:24,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:14:24,738 INFO L87 Difference]: Start difference. First operand 490 states and 657 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:24,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:24,930 INFO L93 Difference]: Finished difference Result 542 states and 715 transitions. [2021-11-23 03:14:24,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:14:24,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2021-11-23 03:14:24,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:24,956 INFO L225 Difference]: With dead ends: 542 [2021-11-23 03:14:24,956 INFO L226 Difference]: Without dead ends: 542 [2021-11-23 03:14:24,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:14:24,957 INFO L933 BasicCegarLoop]: 371 mSDtfsCounter, 109 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:24,957 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [124 Valid, 1346 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:24,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-11-23 03:14:24,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 494. [2021-11-23 03:14:24,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 381 states have (on average 1.2545931758530184) internal successors, (478), 390 states have internal predecessors, (478), 76 states have call successors, (76), 31 states have call predecessors, (76), 36 states have return successors, (109), 72 states have call predecessors, (109), 70 states have call successors, (109) [2021-11-23 03:14:24,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 663 transitions. [2021-11-23 03:14:24,977 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 663 transitions. Word has length 37 [2021-11-23 03:14:24,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:24,977 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 663 transitions. [2021-11-23 03:14:24,977 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:24,978 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 663 transitions. [2021-11-23 03:14:24,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 03:14:24,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:24,980 INFO L514 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, 1, 1] [2021-11-23 03:14:24,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-23 03:14:24,980 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:24,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:24,982 INFO L85 PathProgramCache]: Analyzing trace with hash 921026335, now seen corresponding path program 1 times [2021-11-23 03:14:24,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:24,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68271708] [2021-11-23 03:14:24,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:24,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:25,107 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:25,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68271708] [2021-11-23 03:14:25,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68271708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:25,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:25,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 03:14:25,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480331851] [2021-11-23 03:14:25,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:25,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 03:14:25,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:25,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 03:14:25,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:14:25,109 INFO L87 Difference]: Start difference. First operand 494 states and 663 transitions. Second operand has 10 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:25,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:25,493 INFO L93 Difference]: Finished difference Result 504 states and 672 transitions. [2021-11-23 03:14:25,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 03:14:25,494 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2021-11-23 03:14:25,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:25,497 INFO L225 Difference]: With dead ends: 504 [2021-11-23 03:14:25,497 INFO L226 Difference]: Without dead ends: 491 [2021-11-23 03:14:25,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:14:25,498 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 20 mSDsluCounter, 3018 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2978 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:25,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 2978 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:14:25,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2021-11-23 03:14:25,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 491. [2021-11-23 03:14:25,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 379 states have (on average 1.2532981530343008) internal successors, (475), 388 states have internal predecessors, (475), 75 states have call successors, (75), 31 states have call predecessors, (75), 36 states have return successors, (108), 71 states have call predecessors, (108), 69 states have call successors, (108) [2021-11-23 03:14:25,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 658 transitions. [2021-11-23 03:14:25,514 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 658 transitions. Word has length 37 [2021-11-23 03:14:25,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:25,514 INFO L470 AbstractCegarLoop]: Abstraction has 491 states and 658 transitions. [2021-11-23 03:14:25,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:25,515 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 658 transitions. [2021-11-23 03:14:25,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-23 03:14:25,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:25,517 INFO L514 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, 1, 1, 1, 1, 1] [2021-11-23 03:14:25,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-23 03:14:25,517 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:25,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:25,518 INFO L85 PathProgramCache]: Analyzing trace with hash -163424653, now seen corresponding path program 1 times [2021-11-23 03:14:25,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:25,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666243102] [2021-11-23 03:14:25,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:25,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:25,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:25,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:25,551 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:25,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666243102] [2021-11-23 03:14:25,552 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666243102] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:25,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:25,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:14:25,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134115282] [2021-11-23 03:14:25,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:25,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:25,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:25,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:25,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:25,553 INFO L87 Difference]: Start difference. First operand 491 states and 658 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:14:25,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:25,651 INFO L93 Difference]: Finished difference Result 559 states and 743 transitions. [2021-11-23 03:14:25,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:25,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2021-11-23 03:14:25,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:25,656 INFO L225 Difference]: With dead ends: 559 [2021-11-23 03:14:25,656 INFO L226 Difference]: Without dead ends: 559 [2021-11-23 03:14:25,656 INFO L932 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 [2021-11-23 03:14:25,657 INFO L933 BasicCegarLoop]: 376 mSDtfsCounter, 77 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:25,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 695 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:14:25,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-11-23 03:14:25,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 540. [2021-11-23 03:14:25,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 417 states have (on average 1.2541966426858513) internal successors, (523), 427 states have internal predecessors, (523), 78 states have call successors, (78), 35 states have call predecessors, (78), 44 states have return successors, (123), 77 states have call predecessors, (123), 73 states have call successors, (123) [2021-11-23 03:14:25,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 724 transitions. [2021-11-23 03:14:25,677 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 724 transitions. Word has length 40 [2021-11-23 03:14:25,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:25,677 INFO L470 AbstractCegarLoop]: Abstraction has 540 states and 724 transitions. [2021-11-23 03:14:25,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:14:25,677 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 724 transitions. [2021-11-23 03:14:25,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-23 03:14:25,679 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:25,679 INFO L514 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, 1, 1, 1] [2021-11-23 03:14:25,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-23 03:14:25,680 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:25,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:25,681 INFO L85 PathProgramCache]: Analyzing trace with hash -267026314, now seen corresponding path program 1 times [2021-11-23 03:14:25,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:25,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817851355] [2021-11-23 03:14:25,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:25,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:25,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:25,739 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:25,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817851355] [2021-11-23 03:14:25,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817851355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:25,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:25,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:14:25,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610674042] [2021-11-23 03:14:25,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:25,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:14:25,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:25,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:14:25,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:14:25,742 INFO L87 Difference]: Start difference. First operand 540 states and 724 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:26,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:26,004 INFO L93 Difference]: Finished difference Result 564 states and 751 transitions. [2021-11-23 03:14:26,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:14:26,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2021-11-23 03:14:26,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:26,008 INFO L225 Difference]: With dead ends: 564 [2021-11-23 03:14:26,008 INFO L226 Difference]: Without dead ends: 549 [2021-11-23 03:14:26,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:14:26,009 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 38 mSDsluCounter, 2285 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 2336 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:26,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 2336 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:26,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-11-23 03:14:26,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 540. [2021-11-23 03:14:26,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 540 states, 417 states have (on average 1.2541966426858513) internal successors, (523), 427 states have internal predecessors, (523), 78 states have call successors, (78), 35 states have call predecessors, (78), 44 states have return successors, (123), 77 states have call predecessors, (123), 73 states have call successors, (123) [2021-11-23 03:14:26,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 540 states to 540 states and 724 transitions. [2021-11-23 03:14:26,030 INFO L78 Accepts]: Start accepts. Automaton has 540 states and 724 transitions. Word has length 38 [2021-11-23 03:14:26,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:26,031 INFO L470 AbstractCegarLoop]: Abstraction has 540 states and 724 transitions. [2021-11-23 03:14:26,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:26,031 INFO L276 IsEmpty]: Start isEmpty. Operand 540 states and 724 transitions. [2021-11-23 03:14:26,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-23 03:14:26,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:26,033 INFO L514 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, 1, 1, 1] [2021-11-23 03:14:26,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-23 03:14:26,034 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:26,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:26,034 INFO L85 PathProgramCache]: Analyzing trace with hash 507759881, now seen corresponding path program 1 times [2021-11-23 03:14:26,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:26,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396779935] [2021-11-23 03:14:26,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:26,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:26,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:26,169 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:26,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396779935] [2021-11-23 03:14:26,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396779935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:26,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:26,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 03:14:26,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323698202] [2021-11-23 03:14:26,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:26,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 03:14:26,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:26,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 03:14:26,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:14:26,171 INFO L87 Difference]: Start difference. First operand 540 states and 724 transitions. Second operand has 10 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:26,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:26,576 INFO L93 Difference]: Finished difference Result 550 states and 733 transitions. [2021-11-23 03:14:26,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 03:14:26,577 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 38 [2021-11-23 03:14:26,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:26,581 INFO L225 Difference]: With dead ends: 550 [2021-11-23 03:14:26,581 INFO L226 Difference]: Without dead ends: 537 [2021-11-23 03:14:26,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:14:26,582 INFO L933 BasicCegarLoop]: 335 mSDtfsCounter, 20 mSDsluCounter, 2964 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:26,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 2916 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:14:26,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-11-23 03:14:26,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 537. [2021-11-23 03:14:26,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 415 states have (on average 1.2530120481927711) internal successors, (520), 425 states have internal predecessors, (520), 77 states have call successors, (77), 35 states have call predecessors, (77), 44 states have return successors, (122), 76 states have call predecessors, (122), 72 states have call successors, (122) [2021-11-23 03:14:26,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 719 transitions. [2021-11-23 03:14:26,602 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 719 transitions. Word has length 38 [2021-11-23 03:14:26,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:26,602 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 719 transitions. [2021-11-23 03:14:26,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:26,603 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 719 transitions. [2021-11-23 03:14:26,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-23 03:14:26,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:26,605 INFO L514 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, 1, 1, 1] [2021-11-23 03:14:26,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-23 03:14:26,606 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:26,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:26,606 INFO L85 PathProgramCache]: Analyzing trace with hash -798940260, now seen corresponding path program 1 times [2021-11-23 03:14:26,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:26,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166322635] [2021-11-23 03:14:26,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:26,607 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:26,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:26,644 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:26,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166322635] [2021-11-23 03:14:26,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166322635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:26,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:26,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:14:26,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529743831] [2021-11-23 03:14:26,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:26,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:26,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:26,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:26,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:26,647 INFO L87 Difference]: Start difference. First operand 537 states and 719 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:26,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:26,733 INFO L93 Difference]: Finished difference Result 459 states and 585 transitions. [2021-11-23 03:14:26,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:26,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2021-11-23 03:14:26,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:26,737 INFO L225 Difference]: With dead ends: 459 [2021-11-23 03:14:26,737 INFO L226 Difference]: Without dead ends: 457 [2021-11-23 03:14:26,737 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:26,738 INFO L933 BasicCegarLoop]: 313 mSDtfsCounter, 2 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:26,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 625 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:14:26,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2021-11-23 03:14:26,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 440. [2021-11-23 03:14:26,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 342 states have (on average 1.2280701754385965) internal successors, (420), 348 states have internal predecessors, (420), 65 states have call successors, (65), 29 states have call predecessors, (65), 32 states have return successors, (72), 62 states have call predecessors, (72), 60 states have call successors, (72) [2021-11-23 03:14:26,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 557 transitions. [2021-11-23 03:14:26,752 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 557 transitions. Word has length 38 [2021-11-23 03:14:26,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:26,752 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 557 transitions. [2021-11-23 03:14:26,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:26,752 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 557 transitions. [2021-11-23 03:14:26,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-23 03:14:26,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:26,757 INFO L514 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, 1, 1, 1, 1] [2021-11-23 03:14:26,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-23 03:14:26,757 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:26,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:26,758 INFO L85 PathProgramCache]: Analyzing trace with hash 2120938148, now seen corresponding path program 1 times [2021-11-23 03:14:26,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:26,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220863366] [2021-11-23 03:14:26,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:26,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:26,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:26,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:26,847 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:26,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220863366] [2021-11-23 03:14:26,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220863366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:26,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:26,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:14:26,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576556078] [2021-11-23 03:14:26,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:26,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:14:26,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:26,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:14:26,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:14:26,850 INFO L87 Difference]: Start difference. First operand 440 states and 557 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:27,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:27,099 INFO L93 Difference]: Finished difference Result 456 states and 573 transitions. [2021-11-23 03:14:27,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:14:27,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2021-11-23 03:14:27,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:27,105 INFO L225 Difference]: With dead ends: 456 [2021-11-23 03:14:27,106 INFO L226 Difference]: Without dead ends: 437 [2021-11-23 03:14:27,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:14:27,106 INFO L933 BasicCegarLoop]: 322 mSDtfsCounter, 36 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:27,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 2190 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:27,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-11-23 03:14:27,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2021-11-23 03:14:27,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 340 states have (on average 1.2264705882352942) internal successors, (417), 346 states have internal predecessors, (417), 64 states have call successors, (64), 29 states have call predecessors, (64), 32 states have return successors, (71), 61 states have call predecessors, (71), 59 states have call successors, (71) [2021-11-23 03:14:27,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 552 transitions. [2021-11-23 03:14:27,121 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 552 transitions. Word has length 39 [2021-11-23 03:14:27,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:27,121 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 552 transitions. [2021-11-23 03:14:27,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 7 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:27,122 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 552 transitions. [2021-11-23 03:14:27,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 03:14:27,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:27,128 INFO L514 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:27,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-23 03:14:27,130 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:27,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:27,134 INFO L85 PathProgramCache]: Analyzing trace with hash -529492645, now seen corresponding path program 1 times [2021-11-23 03:14:27,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:27,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737521507] [2021-11-23 03:14:27,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:27,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:27,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:27,168 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:27,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737521507] [2021-11-23 03:14:27,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737521507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:27,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:27,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:14:27,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591621360] [2021-11-23 03:14:27,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:27,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:27,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:27,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:27,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:27,170 INFO L87 Difference]: Start difference. First operand 437 states and 552 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:14:27,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:27,263 INFO L93 Difference]: Finished difference Result 437 states and 551 transitions. [2021-11-23 03:14:27,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:27,263 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2021-11-23 03:14:27,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:27,267 INFO L225 Difference]: With dead ends: 437 [2021-11-23 03:14:27,267 INFO L226 Difference]: Without dead ends: 437 [2021-11-23 03:14:27,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:27,268 INFO L933 BasicCegarLoop]: 307 mSDtfsCounter, 1 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:27,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 610 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:14:27,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2021-11-23 03:14:27,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 437. [2021-11-23 03:14:27,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 340 states have (on average 1.223529411764706) internal successors, (416), 346 states have internal predecessors, (416), 64 states have call successors, (64), 29 states have call predecessors, (64), 32 states have return successors, (71), 61 states have call predecessors, (71), 59 states have call successors, (71) [2021-11-23 03:14:27,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 551 transitions. [2021-11-23 03:14:27,281 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 551 transitions. Word has length 42 [2021-11-23 03:14:27,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:27,281 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 551 transitions. [2021-11-23 03:14:27,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:14:27,282 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 551 transitions. [2021-11-23 03:14:27,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-23 03:14:27,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:27,284 INFO L514 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, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:27,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-23 03:14:27,285 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:27,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:27,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1620751938, now seen corresponding path program 1 times [2021-11-23 03:14:27,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:27,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021005944] [2021-11-23 03:14:27,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:27,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:27,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:27,394 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:27,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021005944] [2021-11-23 03:14:27,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021005944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:27,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:27,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:14:27,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383000369] [2021-11-23 03:14:27,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:27,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:14:27,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:27,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:14:27,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:14:27,398 INFO L87 Difference]: Start difference. First operand 437 states and 551 transitions. Second operand has 11 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 03:14:27,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:27,770 INFO L93 Difference]: Finished difference Result 466 states and 580 transitions. [2021-11-23 03:14:27,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 03:14:27,770 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 41 [2021-11-23 03:14:27,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:27,773 INFO L225 Difference]: With dead ends: 466 [2021-11-23 03:14:27,774 INFO L226 Difference]: Without dead ends: 448 [2021-11-23 03:14:27,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:14:27,774 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 50 mSDsluCounter, 3121 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:27,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 3025 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:14:27,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-11-23 03:14:27,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 434. [2021-11-23 03:14:27,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 338 states have (on average 1.2218934911242603) internal successors, (413), 344 states have internal predecessors, (413), 63 states have call successors, (63), 29 states have call predecessors, (63), 32 states have return successors, (70), 60 states have call predecessors, (70), 58 states have call successors, (70) [2021-11-23 03:14:27,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 546 transitions. [2021-11-23 03:14:27,788 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 546 transitions. Word has length 41 [2021-11-23 03:14:27,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:27,789 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 546 transitions. [2021-11-23 03:14:27,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.7777777777777777) internal successors, (34), 9 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 03:14:27,789 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 546 transitions. [2021-11-23 03:14:27,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-23 03:14:27,791 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:27,792 INFO L514 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, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:27,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-23 03:14:27,792 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:27,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:27,793 INFO L85 PathProgramCache]: Analyzing trace with hash -154714097, now seen corresponding path program 1 times [2021-11-23 03:14:27,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:27,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717706476] [2021-11-23 03:14:27,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:27,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:27,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:27,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:27,872 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:27,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717706476] [2021-11-23 03:14:27,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717706476] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:27,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:27,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 03:14:27,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197860202] [2021-11-23 03:14:27,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:27,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:14:27,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:27,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:14:27,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:14:27,874 INFO L87 Difference]: Start difference. First operand 434 states and 546 transitions. Second operand has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 03:14:28,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:28,164 INFO L93 Difference]: Finished difference Result 447 states and 558 transitions. [2021-11-23 03:14:28,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:14:28,170 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 41 [2021-11-23 03:14:28,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:28,173 INFO L225 Difference]: With dead ends: 447 [2021-11-23 03:14:28,173 INFO L226 Difference]: Without dead ends: 432 [2021-11-23 03:14:28,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:14:28,174 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 36 mSDsluCounter, 2396 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2407 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:28,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 2407 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:28,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-11-23 03:14:28,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 432. [2021-11-23 03:14:28,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 337 states have (on average 1.2195845697329377) internal successors, (411), 343 states have internal predecessors, (411), 62 states have call successors, (62), 29 states have call predecessors, (62), 32 states have return successors, (69), 59 states have call predecessors, (69), 57 states have call successors, (69) [2021-11-23 03:14:28,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 542 transitions. [2021-11-23 03:14:28,188 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 542 transitions. Word has length 41 [2021-11-23 03:14:28,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:28,188 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 542 transitions. [2021-11-23 03:14:28,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 states have internal predecessors, (34), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 03:14:28,188 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 542 transitions. [2021-11-23 03:14:28,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-23 03:14:28,190 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:28,191 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:28,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-23 03:14:28,191 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:28,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:28,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1670445258, now seen corresponding path program 1 times [2021-11-23 03:14:28,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:28,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829137918] [2021-11-23 03:14:28,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:28,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:28,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:28,265 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:28,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829137918] [2021-11-23 03:14:28,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829137918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:28,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:28,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 03:14:28,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933566627] [2021-11-23 03:14:28,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:28,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:14:28,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:28,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:14:28,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:14:28,268 INFO L87 Difference]: Start difference. First operand 432 states and 542 transitions. Second operand has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:14:28,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:28,569 INFO L93 Difference]: Finished difference Result 466 states and 578 transitions. [2021-11-23 03:14:28,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:14:28,569 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 47 [2021-11-23 03:14:28,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:28,572 INFO L225 Difference]: With dead ends: 466 [2021-11-23 03:14:28,572 INFO L226 Difference]: Without dead ends: 451 [2021-11-23 03:14:28,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:14:28,573 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 55 mSDsluCounter, 2436 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:28,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 2438 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:28,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2021-11-23 03:14:28,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 430. [2021-11-23 03:14:28,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 336 states have (on average 1.2172619047619047) internal successors, (409), 342 states have internal predecessors, (409), 61 states have call successors, (61), 29 states have call predecessors, (61), 32 states have return successors, (68), 58 states have call predecessors, (68), 56 states have call successors, (68) [2021-11-23 03:14:28,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 538 transitions. [2021-11-23 03:14:28,599 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 538 transitions. Word has length 47 [2021-11-23 03:14:28,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:28,600 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 538 transitions. [2021-11-23 03:14:28,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:14:28,601 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 538 transitions. [2021-11-23 03:14:28,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 03:14:28,603 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:28,603 INFO L514 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:28,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-23 03:14:28,604 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:28,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:28,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1406798473, now seen corresponding path program 1 times [2021-11-23 03:14:28,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:28,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912697364] [2021-11-23 03:14:28,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:28,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:28,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:28,696 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:28,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912697364] [2021-11-23 03:14:28,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912697364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:28,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:28,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:14:28,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80689942] [2021-11-23 03:14:28,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:28,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:14:28,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:28,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:14:28,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:14:28,698 INFO L87 Difference]: Start difference. First operand 430 states and 538 transitions. Second operand has 11 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 03:14:29,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:29,035 INFO L93 Difference]: Finished difference Result 445 states and 553 transitions. [2021-11-23 03:14:29,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 03:14:29,036 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2021-11-23 03:14:29,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:29,038 INFO L225 Difference]: With dead ends: 445 [2021-11-23 03:14:29,038 INFO L226 Difference]: Without dead ends: 427 [2021-11-23 03:14:29,039 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:14:29,039 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 36 mSDsluCounter, 3047 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2971 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:29,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 2971 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:14:29,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-11-23 03:14:29,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2021-11-23 03:14:29,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 334 states have (on average 1.215568862275449) internal successors, (406), 340 states have internal predecessors, (406), 60 states have call successors, (60), 29 states have call predecessors, (60), 32 states have return successors, (67), 57 states have call predecessors, (67), 55 states have call successors, (67) [2021-11-23 03:14:29,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 533 transitions. [2021-11-23 03:14:29,062 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 533 transitions. Word has length 42 [2021-11-23 03:14:29,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:29,062 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 533 transitions. [2021-11-23 03:14:29,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 03:14:29,063 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 533 transitions. [2021-11-23 03:14:29,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 03:14:29,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:29,065 INFO L514 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:29,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-23 03:14:29,065 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:29,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:29,066 INFO L85 PathProgramCache]: Analyzing trace with hash 890888408, now seen corresponding path program 1 times [2021-11-23 03:14:29,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:29,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440252265] [2021-11-23 03:14:29,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:29,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:29,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:29,175 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:29,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440252265] [2021-11-23 03:14:29,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440252265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:29,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:29,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:14:29,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4052825] [2021-11-23 03:14:29,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:29,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:14:29,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:29,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:14:29,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:14:29,178 INFO L87 Difference]: Start difference. First operand 427 states and 533 transitions. Second operand has 11 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 03:14:29,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:29,479 INFO L93 Difference]: Finished difference Result 442 states and 548 transitions. [2021-11-23 03:14:29,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 03:14:29,480 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2021-11-23 03:14:29,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:29,482 INFO L225 Difference]: With dead ends: 442 [2021-11-23 03:14:29,482 INFO L226 Difference]: Without dead ends: 425 [2021-11-23 03:14:29,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:14:29,483 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 36 mSDsluCounter, 3003 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2932 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:29,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 2932 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:29,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-11-23 03:14:29,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 425. [2021-11-23 03:14:29,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 333 states have (on average 1.2132132132132132) internal successors, (404), 339 states have internal predecessors, (404), 59 states have call successors, (59), 29 states have call predecessors, (59), 32 states have return successors, (66), 56 states have call predecessors, (66), 54 states have call successors, (66) [2021-11-23 03:14:29,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 529 transitions. [2021-11-23 03:14:29,495 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 529 transitions. Word has length 42 [2021-11-23 03:14:29,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:29,495 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 529 transitions. [2021-11-23 03:14:29,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 03:14:29,496 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 529 transitions. [2021-11-23 03:14:29,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 03:14:29,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:29,498 INFO L514 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:29,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-23 03:14:29,498 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:29,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:29,499 INFO L85 PathProgramCache]: Analyzing trace with hash -339977302, now seen corresponding path program 1 times [2021-11-23 03:14:29,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:29,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345995550] [2021-11-23 03:14:29,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:29,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:29,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:29,582 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:29,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345995550] [2021-11-23 03:14:29,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345995550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:29,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:29,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 03:14:29,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981606566] [2021-11-23 03:14:29,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:29,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:14:29,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:29,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:14:29,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:14:29,584 INFO L87 Difference]: Start difference. First operand 425 states and 529 transitions. Second operand has 11 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 03:14:29,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:29,897 INFO L93 Difference]: Finished difference Result 440 states and 544 transitions. [2021-11-23 03:14:29,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 03:14:29,898 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2021-11-23 03:14:29,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:29,900 INFO L225 Difference]: With dead ends: 440 [2021-11-23 03:14:29,900 INFO L226 Difference]: Without dead ends: 420 [2021-11-23 03:14:29,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:14:29,901 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 36 mSDsluCounter, 2968 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2912 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:29,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 2912 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:14:29,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-11-23 03:14:29,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 420. [2021-11-23 03:14:29,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 329 states have (on average 1.2127659574468086) internal successors, (399), 335 states have internal predecessors, (399), 58 states have call successors, (58), 29 states have call predecessors, (58), 32 states have return successors, (65), 55 states have call predecessors, (65), 53 states have call successors, (65) [2021-11-23 03:14:29,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 522 transitions. [2021-11-23 03:14:29,911 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 522 transitions. Word has length 42 [2021-11-23 03:14:29,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:29,912 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 522 transitions. [2021-11-23 03:14:29,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 03:14:29,912 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 522 transitions. [2021-11-23 03:14:29,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-23 03:14:29,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:29,914 INFO L514 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, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:29,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-23 03:14:29,914 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:29,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:29,915 INFO L85 PathProgramCache]: Analyzing trace with hash -89850531, now seen corresponding path program 1 times [2021-11-23 03:14:29,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:29,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472292660] [2021-11-23 03:14:29,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:29,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:29,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:29,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:29,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472292660] [2021-11-23 03:14:29,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472292660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:29,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:29,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:14:29,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173113707] [2021-11-23 03:14:29,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:29,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:14:29,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:29,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:14:29,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:14:29,972 INFO L87 Difference]: Start difference. First operand 420 states and 522 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:30,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:30,181 INFO L93 Difference]: Finished difference Result 436 states and 538 transitions. [2021-11-23 03:14:30,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:14:30,181 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2021-11-23 03:14:30,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:30,184 INFO L225 Difference]: With dead ends: 436 [2021-11-23 03:14:30,184 INFO L226 Difference]: Without dead ends: 417 [2021-11-23 03:14:30,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:14:30,185 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 36 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:30,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 2015 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:30,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2021-11-23 03:14:30,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 417. [2021-11-23 03:14:30,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 327 states have (on average 1.2110091743119267) internal successors, (396), 333 states have internal predecessors, (396), 57 states have call successors, (57), 29 states have call predecessors, (57), 32 states have return successors, (64), 54 states have call predecessors, (64), 52 states have call successors, (64) [2021-11-23 03:14:30,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 517 transitions. [2021-11-23 03:14:30,195 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 517 transitions. Word has length 41 [2021-11-23 03:14:30,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:30,195 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 517 transitions. [2021-11-23 03:14:30,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:30,196 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 517 transitions. [2021-11-23 03:14:30,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-23 03:14:30,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:30,198 INFO L514 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, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:30,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-23 03:14:30,198 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:30,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:30,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1817269045, now seen corresponding path program 1 times [2021-11-23 03:14:30,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:30,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181317952] [2021-11-23 03:14:30,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:30,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:30,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:30,240 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:30,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181317952] [2021-11-23 03:14:30,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181317952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:30,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:30,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:14:30,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425343556] [2021-11-23 03:14:30,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:30,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:14:30,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:30,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:14:30,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:14:30,243 INFO L87 Difference]: Start difference. First operand 417 states and 517 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:30,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:30,425 INFO L93 Difference]: Finished difference Result 433 states and 533 transitions. [2021-11-23 03:14:30,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:14:30,425 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2021-11-23 03:14:30,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:30,435 INFO L225 Difference]: With dead ends: 433 [2021-11-23 03:14:30,435 INFO L226 Difference]: Without dead ends: 400 [2021-11-23 03:14:30,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:14:30,436 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 44 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:30,436 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 1392 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:14:30,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2021-11-23 03:14:30,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 400. [2021-11-23 03:14:30,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 315 states have (on average 1.2063492063492063) internal successors, (380), 321 states have internal predecessors, (380), 52 states have call successors, (52), 29 states have call predecessors, (52), 32 states have return successors, (59), 49 states have call predecessors, (59), 47 states have call successors, (59) [2021-11-23 03:14:30,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 491 transitions. [2021-11-23 03:14:30,459 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 491 transitions. Word has length 41 [2021-11-23 03:14:30,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:30,459 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 491 transitions. [2021-11-23 03:14:30,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:30,460 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 491 transitions. [2021-11-23 03:14:30,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-23 03:14:30,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:30,462 INFO L514 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, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:30,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-23 03:14:30,463 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:30,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:30,463 INFO L85 PathProgramCache]: Analyzing trace with hash -688966632, now seen corresponding path program 1 times [2021-11-23 03:14:30,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:30,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957645375] [2021-11-23 03:14:30,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:30,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:30,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:30,497 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:30,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957645375] [2021-11-23 03:14:30,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957645375] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:30,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:30,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:14:30,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629919801] [2021-11-23 03:14:30,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:30,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:30,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:30,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:30,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:30,499 INFO L87 Difference]: Start difference. First operand 400 states and 491 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:30,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:30,608 INFO L93 Difference]: Finished difference Result 478 states and 589 transitions. [2021-11-23 03:14:30,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:30,609 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 41 [2021-11-23 03:14:30,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:30,611 INFO L225 Difference]: With dead ends: 478 [2021-11-23 03:14:30,612 INFO L226 Difference]: Without dead ends: 478 [2021-11-23 03:14:30,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:30,613 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 64 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:30,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 522 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:14:30,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2021-11-23 03:14:30,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 426. [2021-11-23 03:14:30,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 339 states have (on average 1.2035398230088497) internal successors, (408), 345 states have internal predecessors, (408), 52 states have call successors, (52), 29 states have call predecessors, (52), 34 states have return successors, (61), 51 states have call predecessors, (61), 47 states have call successors, (61) [2021-11-23 03:14:30,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 521 transitions. [2021-11-23 03:14:30,625 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 521 transitions. Word has length 41 [2021-11-23 03:14:30,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:30,626 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 521 transitions. [2021-11-23 03:14:30,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:30,626 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 521 transitions. [2021-11-23 03:14:30,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 03:14:30,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:30,628 INFO L514 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:30,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-23 03:14:30,629 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:30,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:30,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1628425127, now seen corresponding path program 1 times [2021-11-23 03:14:30,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:30,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424123412] [2021-11-23 03:14:30,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:30,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:30,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:30,704 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:30,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424123412] [2021-11-23 03:14:30,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424123412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:30,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:30,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:14:30,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981815380] [2021-11-23 03:14:30,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:30,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:14:30,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:30,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:14:30,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:14:30,706 INFO L87 Difference]: Start difference. First operand 426 states and 521 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:30,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:30,895 INFO L93 Difference]: Finished difference Result 442 states and 537 transitions. [2021-11-23 03:14:30,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:14:30,895 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2021-11-23 03:14:30,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:30,897 INFO L225 Difference]: With dead ends: 442 [2021-11-23 03:14:30,897 INFO L226 Difference]: Without dead ends: 424 [2021-11-23 03:14:30,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:14:30,898 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 36 mSDsluCounter, 1766 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1843 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:30,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 1843 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:30,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-23 03:14:30,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2021-11-23 03:14:30,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 338 states have (on average 1.2011834319526626) internal successors, (406), 344 states have internal predecessors, (406), 51 states have call successors, (51), 29 states have call predecessors, (51), 34 states have return successors, (60), 50 states have call predecessors, (60), 46 states have call successors, (60) [2021-11-23 03:14:30,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 517 transitions. [2021-11-23 03:14:30,910 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 517 transitions. Word has length 42 [2021-11-23 03:14:30,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:30,910 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 517 transitions. [2021-11-23 03:14:30,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:30,911 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 517 transitions. [2021-11-23 03:14:30,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-23 03:14:30,913 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:30,913 INFO L514 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:30,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-23 03:14:30,914 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:30,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:30,914 INFO L85 PathProgramCache]: Analyzing trace with hash 561647146, now seen corresponding path program 1 times [2021-11-23 03:14:30,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:30,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608655756] [2021-11-23 03:14:30,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:30,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:30,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:30,956 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:30,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608655756] [2021-11-23 03:14:30,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608655756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:30,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:30,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:14:30,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477724320] [2021-11-23 03:14:30,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:30,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:14:30,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:30,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:14:30,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:14:30,958 INFO L87 Difference]: Start difference. First operand 424 states and 517 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:31,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:31,277 INFO L93 Difference]: Finished difference Result 473 states and 579 transitions. [2021-11-23 03:14:31,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:14:31,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2021-11-23 03:14:31,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:31,280 INFO L225 Difference]: With dead ends: 473 [2021-11-23 03:14:31,280 INFO L226 Difference]: Without dead ends: 473 [2021-11-23 03:14:31,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:14:31,281 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 419 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:31,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 595 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:14:31,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2021-11-23 03:14:31,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 424. [2021-11-23 03:14:31,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 338 states have (on average 1.1952662721893492) internal successors, (404), 344 states have internal predecessors, (404), 51 states have call successors, (51), 29 states have call predecessors, (51), 34 states have return successors, (60), 50 states have call predecessors, (60), 46 states have call successors, (60) [2021-11-23 03:14:31,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 515 transitions. [2021-11-23 03:14:31,292 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 515 transitions. Word has length 42 [2021-11-23 03:14:31,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:31,293 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 515 transitions. [2021-11-23 03:14:31,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:31,294 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 515 transitions. [2021-11-23 03:14:31,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 03:14:31,295 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:31,295 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:31,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-23 03:14:31,296 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:31,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:31,296 INFO L85 PathProgramCache]: Analyzing trace with hash -408499459, now seen corresponding path program 1 times [2021-11-23 03:14:31,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:31,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245191435] [2021-11-23 03:14:31,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:31,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:31,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:31,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:31,336 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:31,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245191435] [2021-11-23 03:14:31,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245191435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:31,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:31,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:14:31,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736333777] [2021-11-23 03:14:31,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:31,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:14:31,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:31,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:14:31,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:14:31,339 INFO L87 Difference]: Start difference. First operand 424 states and 515 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:31,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:31,638 INFO L93 Difference]: Finished difference Result 471 states and 576 transitions. [2021-11-23 03:14:31,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:14:31,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2021-11-23 03:14:31,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:31,640 INFO L225 Difference]: With dead ends: 471 [2021-11-23 03:14:31,640 INFO L226 Difference]: Without dead ends: 471 [2021-11-23 03:14:31,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:14:31,641 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 408 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:31,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [410 Valid, 598 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:14:31,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-11-23 03:14:31,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 421. [2021-11-23 03:14:31,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 335 states have (on average 1.191044776119403) internal successors, (399), 341 states have internal predecessors, (399), 51 states have call successors, (51), 29 states have call predecessors, (51), 34 states have return successors, (60), 50 states have call predecessors, (60), 46 states have call successors, (60) [2021-11-23 03:14:31,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 510 transitions. [2021-11-23 03:14:31,650 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 510 transitions. Word has length 43 [2021-11-23 03:14:31,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:31,650 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 510 transitions. [2021-11-23 03:14:31,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:31,651 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 510 transitions. [2021-11-23 03:14:31,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 03:14:31,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:31,652 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:31,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-23 03:14:31,653 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:31,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:31,653 INFO L85 PathProgramCache]: Analyzing trace with hash -408222629, now seen corresponding path program 1 times [2021-11-23 03:14:31,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:31,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062393498] [2021-11-23 03:14:31,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:31,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:31,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:31,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:31,742 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:31,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062393498] [2021-11-23 03:14:31,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062393498] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:31,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:31,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:14:31,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542606106] [2021-11-23 03:14:31,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:31,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:14:31,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:31,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:14:31,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:14:31,744 INFO L87 Difference]: Start difference. First operand 421 states and 510 transitions. Second operand has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:31,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:31,951 INFO L93 Difference]: Finished difference Result 428 states and 516 transitions. [2021-11-23 03:14:31,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:14:31,951 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2021-11-23 03:14:31,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:31,953 INFO L225 Difference]: With dead ends: 428 [2021-11-23 03:14:31,953 INFO L226 Difference]: Without dead ends: 411 [2021-11-23 03:14:31,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:14:31,954 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 58 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:31,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 1706 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:31,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2021-11-23 03:14:31,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 407. [2021-11-23 03:14:31,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 322 states have (on average 1.1832298136645962) internal successors, (381), 328 states have internal predecessors, (381), 51 states have call successors, (51), 29 states have call predecessors, (51), 33 states have return successors, (59), 49 states have call predecessors, (59), 46 states have call successors, (59) [2021-11-23 03:14:31,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 491 transitions. [2021-11-23 03:14:31,962 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 491 transitions. Word has length 43 [2021-11-23 03:14:31,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:31,964 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 491 transitions. [2021-11-23 03:14:31,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:31,964 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 491 transitions. [2021-11-23 03:14:31,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 03:14:31,965 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:31,966 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:31,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-23 03:14:31,966 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:31,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:31,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1831864095, now seen corresponding path program 1 times [2021-11-23 03:14:31,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:31,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777453043] [2021-11-23 03:14:31,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:31,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:31,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:31,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:31,995 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:31,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777453043] [2021-11-23 03:14:31,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777453043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:31,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:31,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:14:31,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505656074] [2021-11-23 03:14:31,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:31,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:31,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:31,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:31,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:31,998 INFO L87 Difference]: Start difference. First operand 407 states and 491 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:32,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:32,062 INFO L93 Difference]: Finished difference Result 410 states and 488 transitions. [2021-11-23 03:14:32,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:32,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2021-11-23 03:14:32,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:32,075 INFO L225 Difference]: With dead ends: 410 [2021-11-23 03:14:32,075 INFO L226 Difference]: Without dead ends: 410 [2021-11-23 03:14:32,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:32,076 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 24 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:32,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 520 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:14:32,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-23 03:14:32,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 406. [2021-11-23 03:14:32,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 321 states have (on average 1.1682242990654206) internal successors, (375), 327 states have internal predecessors, (375), 51 states have call successors, (51), 29 states have call predecessors, (51), 33 states have return successors, (59), 49 states have call predecessors, (59), 46 states have call successors, (59) [2021-11-23 03:14:32,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 485 transitions. [2021-11-23 03:14:32,086 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 485 transitions. Word has length 43 [2021-11-23 03:14:32,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:32,087 INFO L470 AbstractCegarLoop]: Abstraction has 406 states and 485 transitions. [2021-11-23 03:14:32,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:32,087 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 485 transitions. [2021-11-23 03:14:32,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-23 03:14:32,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:32,089 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:32,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-23 03:14:32,089 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:32,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:32,090 INFO L85 PathProgramCache]: Analyzing trace with hash 8198584, now seen corresponding path program 1 times [2021-11-23 03:14:32,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:32,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832871151] [2021-11-23 03:14:32,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:32,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:32,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:32,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:32,212 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:32,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832871151] [2021-11-23 03:14:32,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832871151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:32,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:32,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 03:14:32,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707719984] [2021-11-23 03:14:32,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:32,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 03:14:32,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:32,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 03:14:32,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:14:32,216 INFO L87 Difference]: Start difference. First operand 406 states and 485 transitions. Second operand has 10 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:32,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:32,490 INFO L93 Difference]: Finished difference Result 417 states and 495 transitions. [2021-11-23 03:14:32,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 03:14:32,491 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2021-11-23 03:14:32,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:32,492 INFO L225 Difference]: With dead ends: 417 [2021-11-23 03:14:32,492 INFO L226 Difference]: Without dead ends: 404 [2021-11-23 03:14:32,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:14:32,493 INFO L933 BasicCegarLoop]: 264 mSDtfsCounter, 20 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:32,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 2274 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:32,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-11-23 03:14:32,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 404. [2021-11-23 03:14:32,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 320 states have (on average 1.165625) internal successors, (373), 326 states have internal predecessors, (373), 50 states have call successors, (50), 29 states have call predecessors, (50), 33 states have return successors, (58), 48 states have call predecessors, (58), 45 states have call successors, (58) [2021-11-23 03:14:32,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 481 transitions. [2021-11-23 03:14:32,504 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 481 transitions. Word has length 47 [2021-11-23 03:14:32,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:32,504 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 481 transitions. [2021-11-23 03:14:32,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:32,504 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 481 transitions. [2021-11-23 03:14:32,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 03:14:32,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:32,507 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:32,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-23 03:14:32,508 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:32,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:32,508 INFO L85 PathProgramCache]: Analyzing trace with hash -2000511447, now seen corresponding path program 1 times [2021-11-23 03:14:32,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:32,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426290985] [2021-11-23 03:14:32,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:32,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:32,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:32,666 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:32,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426290985] [2021-11-23 03:14:32,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426290985] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:32,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:32,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 03:14:32,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417126358] [2021-11-23 03:14:32,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:32,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 03:14:32,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:32,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 03:14:32,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:14:32,668 INFO L87 Difference]: Start difference. First operand 404 states and 481 transitions. Second operand has 10 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:32,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:32,917 INFO L93 Difference]: Finished difference Result 414 states and 490 transitions. [2021-11-23 03:14:32,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 03:14:32,918 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2021-11-23 03:14:32,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:32,919 INFO L225 Difference]: With dead ends: 414 [2021-11-23 03:14:32,919 INFO L226 Difference]: Without dead ends: 391 [2021-11-23 03:14:32,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-11-23 03:14:32,920 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 20 mSDsluCounter, 2168 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2197 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:32,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 2197 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:32,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-11-23 03:14:32,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 391. [2021-11-23 03:14:32,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 309 states have (on average 1.1650485436893203) internal successors, (360), 315 states have internal predecessors, (360), 48 states have call successors, (48), 29 states have call predecessors, (48), 33 states have return successors, (56), 46 states have call predecessors, (56), 43 states have call successors, (56) [2021-11-23 03:14:32,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 464 transitions. [2021-11-23 03:14:32,929 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 464 transitions. Word has length 44 [2021-11-23 03:14:32,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:32,930 INFO L470 AbstractCegarLoop]: Abstraction has 391 states and 464 transitions. [2021-11-23 03:14:32,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:32,930 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 464 transitions. [2021-11-23 03:14:32,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-23 03:14:32,932 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:32,932 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:32,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-23 03:14:32,933 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:32,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:32,933 INFO L85 PathProgramCache]: Analyzing trace with hash 199208219, now seen corresponding path program 1 times [2021-11-23 03:14:32,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:32,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667779161] [2021-11-23 03:14:32,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:32,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:32,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-23 03:14:32,992 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:32,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667779161] [2021-11-23 03:14:32,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667779161] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:32,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:32,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:14:32,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117507614] [2021-11-23 03:14:32,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:32,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:14:32,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:32,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:14:32,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:14:32,994 INFO L87 Difference]: Start difference. First operand 391 states and 464 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 03:14:33,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:33,170 INFO L93 Difference]: Finished difference Result 407 states and 480 transitions. [2021-11-23 03:14:33,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:14:33,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2021-11-23 03:14:33,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:33,172 INFO L225 Difference]: With dead ends: 407 [2021-11-23 03:14:33,172 INFO L226 Difference]: Without dead ends: 384 [2021-11-23 03:14:33,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:14:33,173 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 36 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:33,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 1678 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:14:33,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-11-23 03:14:33,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 384. [2021-11-23 03:14:33,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 304 states have (on average 1.1611842105263157) internal successors, (353), 310 states have internal predecessors, (353), 46 states have call successors, (46), 29 states have call predecessors, (46), 33 states have return successors, (54), 44 states have call predecessors, (54), 41 states have call successors, (54) [2021-11-23 03:14:33,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 453 transitions. [2021-11-23 03:14:33,185 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 453 transitions. Word has length 45 [2021-11-23 03:14:33,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:33,185 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 453 transitions. [2021-11-23 03:14:33,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.625) internal successors, (37), 7 states have internal predecessors, (37), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 03:14:33,186 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 453 transitions. [2021-11-23 03:14:33,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 03:14:33,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:33,187 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:33,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-23 03:14:33,188 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:33,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:33,188 INFO L85 PathProgramCache]: Analyzing trace with hash 116674451, now seen corresponding path program 1 times [2021-11-23 03:14:33,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:33,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788655881] [2021-11-23 03:14:33,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:33,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:33,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:33,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:33,257 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:33,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788655881] [2021-11-23 03:14:33,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788655881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:33,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:33,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:14:33,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496539861] [2021-11-23 03:14:33,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:33,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:14:33,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:33,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:14:33,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:14:33,259 INFO L87 Difference]: Start difference. First operand 384 states and 453 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:33,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:33,425 INFO L93 Difference]: Finished difference Result 400 states and 469 transitions. [2021-11-23 03:14:33,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:14:33,426 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2021-11-23 03:14:33,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:33,427 INFO L225 Difference]: With dead ends: 400 [2021-11-23 03:14:33,427 INFO L226 Difference]: Without dead ends: 379 [2021-11-23 03:14:33,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:14:33,428 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 36 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1620 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:33,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 1620 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:14:33,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2021-11-23 03:14:33,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2021-11-23 03:14:33,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 300 states have (on average 1.16) internal successors, (348), 306 states have internal predecessors, (348), 45 states have call successors, (45), 29 states have call predecessors, (45), 33 states have return successors, (53), 43 states have call predecessors, (53), 40 states have call successors, (53) [2021-11-23 03:14:33,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 446 transitions. [2021-11-23 03:14:33,436 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 446 transitions. Word has length 44 [2021-11-23 03:14:33,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:33,437 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 446 transitions. [2021-11-23 03:14:33,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 7 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:33,437 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 446 transitions. [2021-11-23 03:14:33,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-23 03:14:33,439 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:33,440 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:33,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-23 03:14:33,440 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:33,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:33,441 INFO L85 PathProgramCache]: Analyzing trace with hash -623609271, now seen corresponding path program 1 times [2021-11-23 03:14:33,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:33,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879652753] [2021-11-23 03:14:33,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:33,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:33,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:33,509 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:33,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879652753] [2021-11-23 03:14:33,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879652753] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:33,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:33,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 03:14:33,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133950702] [2021-11-23 03:14:33,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:33,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:14:33,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:33,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:14:33,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:14:33,511 INFO L87 Difference]: Start difference. First operand 379 states and 446 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:14:33,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:33,739 INFO L93 Difference]: Finished difference Result 413 states and 482 transitions. [2021-11-23 03:14:33,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:14:33,740 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 50 [2021-11-23 03:14:33,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:33,741 INFO L225 Difference]: With dead ends: 413 [2021-11-23 03:14:33,741 INFO L226 Difference]: Without dead ends: 398 [2021-11-23 03:14:33,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:14:33,742 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 52 mSDsluCounter, 1796 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:33,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 1823 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:33,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-23 03:14:33,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 381. [2021-11-23 03:14:33,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 302 states have (on average 1.1589403973509933) internal successors, (350), 308 states have internal predecessors, (350), 45 states have call successors, (45), 29 states have call predecessors, (45), 33 states have return successors, (53), 43 states have call predecessors, (53), 40 states have call successors, (53) [2021-11-23 03:14:33,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 448 transitions. [2021-11-23 03:14:33,750 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 448 transitions. Word has length 50 [2021-11-23 03:14:33,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:33,750 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 448 transitions. [2021-11-23 03:14:33,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:14:33,751 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 448 transitions. [2021-11-23 03:14:33,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-23 03:14:33,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:33,752 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:33,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-23 03:14:33,752 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:33,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:33,753 INFO L85 PathProgramCache]: Analyzing trace with hash 1593028133, now seen corresponding path program 1 times [2021-11-23 03:14:33,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:33,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296705589] [2021-11-23 03:14:33,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:33,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:33,826 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:33,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296705589] [2021-11-23 03:14:33,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296705589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:33,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:33,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 03:14:33,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466599408] [2021-11-23 03:14:33,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:33,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:14:33,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:33,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:14:33,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:14:33,829 INFO L87 Difference]: Start difference. First operand 381 states and 448 transitions. Second operand has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:14:34,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:34,054 INFO L93 Difference]: Finished difference Result 397 states and 464 transitions. [2021-11-23 03:14:34,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:14:34,055 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 47 [2021-11-23 03:14:34,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:34,056 INFO L225 Difference]: With dead ends: 397 [2021-11-23 03:14:34,056 INFO L226 Difference]: Without dead ends: 373 [2021-11-23 03:14:34,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:14:34,057 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 37 mSDsluCounter, 1740 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:34,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 1773 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:34,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-11-23 03:14:34,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 373. [2021-11-23 03:14:34,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 296 states have (on average 1.1554054054054055) internal successors, (342), 302 states have internal predecessors, (342), 43 states have call successors, (43), 29 states have call predecessors, (43), 33 states have return successors, (51), 41 states have call predecessors, (51), 38 states have call successors, (51) [2021-11-23 03:14:34,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 436 transitions. [2021-11-23 03:14:34,065 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 436 transitions. Word has length 47 [2021-11-23 03:14:34,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:34,065 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 436 transitions. [2021-11-23 03:14:34,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 5.428571428571429) internal successors, (38), 8 states have internal predecessors, (38), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:14:34,066 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 436 transitions. [2021-11-23 03:14:34,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 03:14:34,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:34,067 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:34,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-23 03:14:34,067 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:34,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:34,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1783314124, now seen corresponding path program 1 times [2021-11-23 03:14:34,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:34,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467640608] [2021-11-23 03:14:34,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:34,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:34,180 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:14:34,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467640608] [2021-11-23 03:14:34,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467640608] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:34,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:34,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 03:14:34,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85307618] [2021-11-23 03:14:34,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:34,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:14:34,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:14:34,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:14:34,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:14:34,182 INFO L87 Difference]: Start difference. First operand 373 states and 436 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 03:14:34,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:34,606 INFO L93 Difference]: Finished difference Result 352 states and 407 transitions. [2021-11-23 03:14:34,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:14:34,607 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 46 [2021-11-23 03:14:34,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:34,608 INFO L225 Difference]: With dead ends: 352 [2021-11-23 03:14:34,608 INFO L226 Difference]: Without dead ends: 347 [2021-11-23 03:14:34,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:14:34,609 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 222 mSDsluCounter, 1017 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:34,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 1116 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:14:34,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-11-23 03:14:34,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 331. [2021-11-23 03:14:34,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 261 states have (on average 1.1532567049808429) internal successors, (301), 265 states have internal predecessors, (301), 40 states have call successors, (40), 29 states have call predecessors, (40), 29 states have return successors, (46), 36 states have call predecessors, (46), 36 states have call successors, (46) [2021-11-23 03:14:34,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 387 transitions. [2021-11-23 03:14:34,617 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 387 transitions. Word has length 46 [2021-11-23 03:14:34,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:34,617 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 387 transitions. [2021-11-23 03:14:34,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-23 03:14:34,618 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 387 transitions. [2021-11-23 03:14:34,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-23 03:14:34,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:34,619 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:34,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-23 03:14:34,619 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:34,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:34,620 INFO L85 PathProgramCache]: Analyzing trace with hash -584752547, now seen corresponding path program 1 times [2021-11-23 03:14:34,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:14:34,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680591368] [2021-11-23 03:14:34,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:34,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:14:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:14:34,654 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 03:14:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:14:34,734 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-23 03:14:34,734 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 03:14:34,735 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-11-23 03:14:34,737 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-11-23 03:14:34,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-23 03:14:34,742 INFO L732 BasicCegarLoop]: Path program 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:34,745 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:14:34,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:14:34 BoogieIcfgContainer [2021-11-23 03:14:34,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:14:34,871 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:14:34,871 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:14:34,871 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:14:34,871 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:14:12" (3/4) ... [2021-11-23 03:14:34,874 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 03:14:34,875 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:14:34,877 INFO L158 Benchmark]: Toolchain (without parser) took 25651.88ms. Allocated memory was 94.4MB in the beginning and 251.7MB in the end (delta: 157.3MB). Free memory was 50.2MB in the beginning and 144.9MB in the end (delta: -94.7MB). Peak memory consumption was 61.8MB. Max. memory is 16.1GB. [2021-11-23 03:14:34,877 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 94.4MB. Free memory was 68.2MB in the beginning and 68.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:14:34,878 INFO L158 Benchmark]: CACSL2BoogieTranslator took 705.53ms. Allocated memory is still 94.4MB. Free memory was 49.9MB in the beginning and 49.8MB in the end (delta: 133.7kB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2021-11-23 03:14:34,878 INFO L158 Benchmark]: Boogie Procedure Inliner took 162.22ms. Allocated memory is still 94.4MB. Free memory was 49.8MB in the beginning and 42.8MB in the end (delta: 7.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 03:14:34,878 INFO L158 Benchmark]: Boogie Preprocessor took 193.72ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 42.8MB in the beginning and 85.2MB in the end (delta: -42.4MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2021-11-23 03:14:34,878 INFO L158 Benchmark]: RCFGBuilder took 1796.85ms. Allocated memory was 113.2MB in the beginning and 174.1MB in the end (delta: 60.8MB). Free memory was 85.2MB in the beginning and 135.7MB in the end (delta: -50.5MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. [2021-11-23 03:14:34,879 INFO L158 Benchmark]: TraceAbstraction took 22780.36ms. Allocated memory was 174.1MB in the beginning and 251.7MB in the end (delta: 77.6MB). Free memory was 135.7MB in the beginning and 144.9MB in the end (delta: -9.2MB). Peak memory consumption was 66.3MB. Max. memory is 16.1GB. [2021-11-23 03:14:34,879 INFO L158 Benchmark]: Witness Printer took 4.16ms. Allocated memory is still 251.7MB. Free memory is still 144.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:14:34,882 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 94.4MB. Free memory was 68.2MB in the beginning and 68.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 705.53ms. Allocated memory is still 94.4MB. Free memory was 49.9MB in the beginning and 49.8MB in the end (delta: 133.7kB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 162.22ms. Allocated memory is still 94.4MB. Free memory was 49.8MB in the beginning and 42.8MB in the end (delta: 7.0MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 193.72ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 42.8MB in the beginning and 85.2MB in the end (delta: -42.4MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * RCFGBuilder took 1796.85ms. Allocated memory was 113.2MB in the beginning and 174.1MB in the end (delta: 60.8MB). Free memory was 85.2MB in the beginning and 135.7MB in the end (delta: -50.5MB). Peak memory consumption was 48.6MB. Max. memory is 16.1GB. * TraceAbstraction took 22780.36ms. Allocated memory was 174.1MB in the beginning and 251.7MB in the end (delta: 77.6MB). Free memory was 135.7MB in the beginning and 144.9MB in the end (delta: -9.2MB). Peak memory consumption was 66.3MB. Max. memory is 16.1GB. * Witness Printer took 4.16ms. Allocated memory is still 251.7MB. Free memory is still 144.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 59]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 59. Possible FailurePath: [L32] int s ; [L33] int UNLOADED ; [L34] int NP ; [L35] int DC ; [L36] int SKIP1 ; [L37] int SKIP2 ; [L38] int MPR1 ; [L39] int MPR3 ; [L40] int IPC ; [L41] int pended ; [L42] int compFptr ; [L43] int compRegistered ; [L44] int lowerDriverReturn ; [L45] int setEventCalled ; [L46] int customIrp ; [L47] int routine ; [L48] int myStatus ; [L49] int pirp ; [L50] int Executive ; [L51] int Suspended ; [L52] int KernelMode ; [L53] int DeviceUsageTypePaging ; [L1718] int pirp__IoStatus__Status ; [L1719] int d = __VERIFIER_nondet_int() ; [L1720] int status = __VERIFIER_nondet_int() ; [L1721] int irp = __VERIFIER_nondet_int() ; [L1722] int we_should_unload = __VERIFIER_nondet_int() ; [L1723] int irp_choice = __VERIFIER_nondet_int() ; [L1724] int devobj = __VERIFIER_nondet_int() ; [L1725] int __cil_tmp9 ; [L1730] s = 0 [L1731] UNLOADED = 0 [L1732] NP = 0 [L1733] DC = 0 [L1734] SKIP1 = 0 [L1735] SKIP2 = 0 [L1736] MPR1 = 0 [L1737] MPR3 = 0 [L1738] IPC = 0 [L1739] pended = 0 [L1740] compFptr = 0 [L1741] compRegistered = 0 [L1742] lowerDriverReturn = 0 [L1743] setEventCalled = 0 [L1744] customIrp = 0 [L1745] routine = 0 [L1746] myStatus = 0 [L1747] pirp = 0 [L1748] Executive = 0 [L1749] Suspended = 5 [L1750] KernelMode = 0 [L1751] DeviceUsageTypePaging = 1 [L1754] pirp = irp [L1755] CALL _BLAST_init() [L67] UNLOADED = 0 [L68] NP = 1 [L69] DC = 2 [L70] SKIP1 = 3 [L71] SKIP2 = 4 [L72] MPR1 = 5 [L73] MPR3 = 6 [L74] IPC = 7 [L75] s = UNLOADED [L76] pended = 0 [L77] compFptr = 0 [L78] compRegistered = 0 [L79] lowerDriverReturn = 0 [L80] setEventCalled = 0 [L81] customIrp = 0 [L1755] RET _BLAST_init() [L1757] COND TRUE status >= 0 [L1758] s = NP [L1759] customIrp = 0 [L1760] setEventCalled = customIrp [L1761] lowerDriverReturn = setEventCalled [L1762] compRegistered = lowerDriverReturn [L1763] compFptr = compRegistered [L1764] pended = compFptr [L1765] pirp__IoStatus__Status = 0 [L1766] myStatus = 0 [L1767] COND TRUE irp_choice == 0 [L1768] pirp__IoStatus__Status = -1073741637 [L1769] myStatus = -1073741637 [L1772] CALL stub_driver_init() [L1707] s = NP [L1708] customIrp = 0 [L1709] setEventCalled = customIrp [L1710] lowerDriverReturn = setEventCalled [L1711] compRegistered = lowerDriverReturn [L1712] compFptr = compRegistered [L1713] pended = compFptr [L1772] RET stub_driver_init() [L1775] COND FALSE !(status < 0) [L1779] int tmp_ndt_1; [L1780] tmp_ndt_1 = __VERIFIER_nondet_int() [L1781] COND TRUE tmp_ndt_1 == 2 [L1798] CALL, EXPR CdAudioDeviceControl(devobj, pirp) [L313] int deviceExtension__Active = __VERIFIER_nondet_int() ; [L314] int status ; VAL [\old(DeviceObject)=0, \old(Irp)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L317] COND FALSE !(deviceExtension__Active == 2) VAL [\old(DeviceObject)=0, \old(Irp)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L320] COND FALSE !(deviceExtension__Active == 3) VAL [\old(DeviceObject)=0, \old(Irp)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L323] COND FALSE !(deviceExtension__Active == 1) VAL [\old(DeviceObject)=0, \old(Irp)=0, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L326] COND TRUE deviceExtension__Active == 7 [L348] CALL, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L1591] int currentIrpStack__Parameters__DeviceIoControl__IoControlCode = __VERIFIER_nondet_int() ; [L1592] int deviceExtension__TargetDeviceObject = __VERIFIER_nondet_int() ; [L1593] int irpSp__Control ; [L1594] int tmp ; [L1595] int tmp___0 ; [L1596] int __cil_tmp8 ; [L1597] int __cil_tmp9 ; [L1598] int __cil_tmp10 ; [L1599] int __cil_tmp11 ; [L1600] int __cil_tmp12 ; [L1604] __cil_tmp8 = 56 [L1605] __cil_tmp9 = 16384 [L1606] __cil_tmp10 = 131072 [L1607] __cil_tmp11 = 147456 [L1608] __cil_tmp12 = 147512 VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1609] COND TRUE currentIrpStack__Parameters__DeviceIoControl__IoControlCode == __cil_tmp12 VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1610] COND FALSE !(s != NP) VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1615] COND FALSE !(compRegistered != 0) [L1620] compRegistered = 1 [L1621] routine = 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1625] irpSp__Control = 224 VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] CALL, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1900] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1901] int returnVal2 ; [L1902] int compRetStatus ; [L1903] int lcontext = __VERIFIER_nondet_int() ; [L1904] unsigned long __cil_tmp8 ; VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-3, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1907] COND TRUE \read(compRegistered) VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-3, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1908] COND TRUE routine == 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-3, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] CALL, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(Context)=-3, \old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1569] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1570] int Irp__AssociatedIrp__SystemBuffer = __VERIFIER_nondet_int() ; [L1573] COND TRUE \read(Irp__PendingReturned) VAL [\old(Context)=-3, \old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, Context=-3, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1574] COND TRUE pended == 0 [L1575] pended = 1 VAL [\old(Context)=-3, \old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, Context=-3, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__AssociatedIrp__SystemBuffer=0, Irp__PendingReturned=1, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1582] COND FALSE !(myStatus >= 0) [L1587] return (myStatus); [L1910] RET, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, HPCdrCompletion(DeviceObject, Irp, lcontext)=-1073741637, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-3, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] compRetStatus = HPCdrCompletion(DeviceObject, Irp, lcontext) [L1920] __cil_tmp8 = (unsigned long )compRetStatus VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-3, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1921] COND FALSE !(__cil_tmp8 == -1073741802) VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-3, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1928] COND FALSE !(\read(Irp__PendingReturned)) [L1931] int tmp_ndt_4; [L1932] tmp_ndt_4 = __VERIFIER_nondet_int() [L1933] COND TRUE tmp_ndt_4 == 0 [L1944] returnVal2 = 0 VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, __VERIFIER_nondet_int()=0, __VERIFIER_nondet_int()=-1, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-3, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, returnVal2=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, tmp_ndt_5=-1, UNLOADED=0] [L1958] COND TRUE s == NP [L1959] s = IPC [L1960] lowerDriverReturn = returnVal2 VAL [\old(DeviceObject)=0, \old(Irp)=0, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, __VERIFIER_nondet_int()=0, __VERIFIER_nondet_int()=-1, compFptr=0, compRegistered=1, compRetStatus=-1073741637, customIrp=0, DC=2, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, Irp__PendingReturned=0, KernelMode=0, lcontext=-3, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, tmp_ndt_5=-1, UNLOADED=0] [L1981] return (returnVal2); [L1626] RET, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(DeviceObject)=0, \old(Irp)=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IofCallDriver(deviceExtension__TargetDeviceObject, Irp)=0, IPC=7, Irp=0, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] tmp = IofCallDriver(deviceExtension__TargetDeviceObject, Irp) [L1628] return (tmp); VAL [\old(DeviceObject)=0, \old(Irp)=0, \result=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=0, DeviceObject=0, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=0, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp=0, UNLOADED=0] [L348] RET, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L348] status = CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L363] return (status); [L1798] RET, EXPR CdAudioDeviceControl(devobj, pirp) [L1798] status = CdAudioDeviceControl(devobj, pirp) [L1819] COND TRUE \read(we_should_unload) [L1821] FCALL CdAudioUnload(d) [L1825] COND TRUE pended == 1 VAL [compFptr=0, compRegistered=1, customIrp=0, d=-2, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=1] [L1826] COND FALSE !(s == NP) VAL [compFptr=0, compRegistered=1, customIrp=0, d=-2, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=1] [L1833] COND TRUE pended == 1 VAL [compFptr=0, compRegistered=1, customIrp=0, d=-2, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=1] [L1834] COND FALSE !(s == MPR3) VAL [compFptr=0, compRegistered=1, customIrp=0, d=-2, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=1] [L1841] COND TRUE s != UNLOADED VAL [compFptr=0, compRegistered=1, customIrp=0, d=-2, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=1] [L1842] COND TRUE status != -1 VAL [compFptr=0, compRegistered=1, customIrp=0, d=-2, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=1] [L1843] COND TRUE s != SKIP2 VAL [compFptr=0, compRegistered=1, customIrp=0, d=-2, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=1] [L1844] COND FALSE !(s != IPC) VAL [compFptr=0, compRegistered=1, customIrp=0, d=-2, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=1] [L1857] COND FALSE !(pended != 1) VAL [compFptr=0, compRegistered=1, customIrp=0, d=-2, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=1] [L1869] COND TRUE status != 259 VAL [compFptr=0, compRegistered=1, customIrp=0, d=-2, DC=2, DeviceUsageTypePaging=1, devobj=0, Executive=0, IPC=7, irp=0, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, pirp__IoStatus__Status=-1073741637, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=1] [L1871] CALL errorFn() VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L59] reach_error() VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=1, pirp=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] - UnprovableResult [Line: 1717]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 351 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 22.6s, OverallIterations: 62, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 16.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8669 SdHoareTripleChecker+Valid, 13.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8457 mSDsluCounter, 96133 SdHoareTripleChecker+Invalid, 11.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 84858 mSDsCounter, 520 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19624 IncrementalHoareTripleChecker+Invalid, 20144 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 520 mSolverCounterUnsat, 21825 mSDtfsCounter, 19624 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 505 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 387 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=757occurred in iteration=12, InterpolantAutomatonStates: 377, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 61 MinimizatonAttempts, 928 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 2077 NumberOfCodeBlocks, 2077 NumberOfCodeBlocksAsserted, 62 NumberOfCheckSat, 1971 ConstructedInterpolants, 0 QuantifiedInterpolants, 5750 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 61 InterpolantComputations, 61 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-23 03:14:34,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash bfc29f03d3be9b41eb07ac14f0f7eac45bf3a60a4a6601e3132f720b72534d53 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:14:37,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:14:37,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:14:37,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:14:37,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:14:37,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:14:37,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:14:37,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:14:37,523 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:14:37,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:14:37,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:14:37,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:14:37,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:14:37,530 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:14:37,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:14:37,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:14:37,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:14:37,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:14:37,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:14:37,541 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:14:37,543 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:14:37,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:14:37,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:14:37,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:14:37,570 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:14:37,570 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:14:37,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:14:37,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:14:37,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:14:37,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:14:37,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:14:37,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:14:37,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:14:37,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:14:37,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:14:37,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:14:37,583 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:14:37,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:14:37,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:14:37,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:14:37,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:14:37,587 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2021-11-23 03:14:37,620 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:14:37,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:14:37,621 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:14:37,621 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:14:37,622 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:14:37,622 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:14:37,623 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:14:37,623 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:14:37,623 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:14:37,624 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:14:37,624 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:14:37,624 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:14:37,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 03:14:37,625 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 03:14:37,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:14:37,626 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:14:37,626 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-23 03:14:37,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:14:37,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:14:37,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:14:37,627 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-23 03:14:37,628 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-23 03:14:37,628 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-23 03:14:37,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:14:37,628 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 03:14:37,629 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 03:14:37,629 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 03:14:37,629 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:14:37,629 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:14:37,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:14:37,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 03:14:37,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:14:37,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:14:37,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:14:37,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:14:37,631 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-23 03:14:37,632 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 03:14:37,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:14:37,632 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:14:37,632 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfc29f03d3be9b41eb07ac14f0f7eac45bf3a60a4a6601e3132f720b72534d53 [2021-11-23 03:14:37,988 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:14:38,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:14:38,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:14:38,013 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:14:38,014 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:14:38,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2021-11-23 03:14:38,096 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/data/d8f9b6df7/e615c55d83f74f2593741bb5dcc66076/FLAG3a4cec311 [2021-11-23 03:14:38,877 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:14:38,878 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c [2021-11-23 03:14:38,901 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/data/d8f9b6df7/e615c55d83f74f2593741bb5dcc66076/FLAG3a4cec311 [2021-11-23 03:14:39,073 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/data/d8f9b6df7/e615c55d83f74f2593741bb5dcc66076 [2021-11-23 03:14:39,076 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:14:39,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:14:39,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:14:39,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:14:39,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:14:39,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:14:39" (1/1) ... [2021-11-23 03:14:39,089 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41dfb740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:39, skipping insertion in model container [2021-11-23 03:14:39,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:14:39" (1/1) ... [2021-11-23 03:14:39,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:14:39,178 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:14:39,356 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c[2074,2087] [2021-11-23 03:14:39,638 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:14:39,660 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:14:39,682 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/sv-benchmarks/c/ntdrivers-simplified/cdaudio_simpl1.cil-1.c[2074,2087] [2021-11-23 03:14:39,852 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:14:39,896 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:14:39,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:39 WrapperNode [2021-11-23 03:14:39,896 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:14:39,901 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:14:39,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:14:39,901 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:14:39,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:39" (1/1) ... [2021-11-23 03:14:39,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:39" (1/1) ... [2021-11-23 03:14:40,038 INFO L137 Inliner]: procedures = 41, calls = 108, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 1444 [2021-11-23 03:14:40,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:14:40,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:14:40,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:14:40,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:14:40,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:39" (1/1) ... [2021-11-23 03:14:40,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:39" (1/1) ... [2021-11-23 03:14:40,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:39" (1/1) ... [2021-11-23 03:14:40,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:39" (1/1) ... [2021-11-23 03:14:40,090 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:39" (1/1) ... [2021-11-23 03:14:40,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:39" (1/1) ... [2021-11-23 03:14:40,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:39" (1/1) ... [2021-11-23 03:14:40,131 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:14:40,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:14:40,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:14:40,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:14:40,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:39" (1/1) ... [2021-11-23 03:14:40,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:14:40,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:14:40,174 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:14:40,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:14:40,237 INFO L130 BoogieDeclarations]: Found specification of procedure SendSrbSynchronous [2021-11-23 03:14:40,239 INFO L138 BoogieDeclarations]: Found implementation of procedure SendSrbSynchronous [2021-11-23 03:14:40,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:14:40,240 INFO L130 BoogieDeclarations]: Found specification of procedure AG_SetStatusAndReturn [2021-11-23 03:14:40,240 INFO L138 BoogieDeclarations]: Found implementation of procedure AG_SetStatusAndReturn [2021-11-23 03:14:40,240 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 03:14:40,240 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-11-23 03:14:40,240 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-11-23 03:14:40,240 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioIsPlayActive [2021-11-23 03:14:40,240 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioIsPlayActive [2021-11-23 03:14:40,241 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-11-23 03:14:40,242 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-11-23 03:14:40,242 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-11-23 03:14:40,242 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-11-23 03:14:40,242 INFO L130 BoogieDeclarations]: Found specification of procedure HPCdrCompletion [2021-11-23 03:14:40,242 INFO L138 BoogieDeclarations]: Found implementation of procedure HPCdrCompletion [2021-11-23 03:14:40,242 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2021-11-23 03:14:40,243 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2021-11-23 03:14:40,243 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSignalCompletion [2021-11-23 03:14:40,243 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSignalCompletion [2021-11-23 03:14:40,243 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-11-23 03:14:40,243 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-11-23 03:14:40,243 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-11-23 03:14:40,243 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-11-23 03:14:40,244 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioSendToNextDriver [2021-11-23 03:14:40,244 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioSendToNextDriver [2021-11-23 03:14:40,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:14:40,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:14:40,245 INFO L130 BoogieDeclarations]: Found specification of procedure CdAudioForwardIrpSynchronous [2021-11-23 03:14:40,245 INFO L138 BoogieDeclarations]: Found implementation of procedure CdAudioForwardIrpSynchronous [2021-11-23 03:14:40,614 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:14:40,616 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:14:40,734 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:14:40,805 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2021-11-23 03:14:40,805 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2021-11-23 03:14:40,901 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:14:40,928 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-11-23 03:14:40,928 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-11-23 03:14:40,940 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:14:40,941 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:14:40,947 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:14:40,964 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:14:40,974 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:14:40,980 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:14:40,984 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 03:14:41,794 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L305: CdAudioPnp_#res#1 := 0bv32; [2021-11-23 03:14:41,795 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##258: assume !false; [2021-11-23 03:14:41,795 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##257: assume false; [2021-11-23 03:14:41,795 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##286: assume !false; [2021-11-23 03:14:41,796 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##285: assume false; [2021-11-23 03:14:41,796 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##47: assume !false; [2021-11-23 03:14:41,796 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume false; [2021-11-23 03:14:41,797 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##133: assume false; [2021-11-23 03:14:41,797 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##134: assume !false; [2021-11-23 03:14:41,798 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume !false; [2021-11-23 03:14:41,798 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume false; [2021-11-23 03:14:41,798 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-11-23 03:14:41,798 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-11-23 03:14:41,799 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##331: assume false; [2021-11-23 03:14:41,799 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##332: assume !false; [2021-11-23 03:14:41,861 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:14:41,888 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:14:41,888 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:14:41,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:14:41 BoogieIcfgContainer [2021-11-23 03:14:41,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:14:41,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:14:41,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:14:41,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:14:41,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:14:39" (1/3) ... [2021-11-23 03:14:41,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec37ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:14:41, skipping insertion in model container [2021-11-23 03:14:41,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:14:39" (2/3) ... [2021-11-23 03:14:41,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ec37ab1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:14:41, skipping insertion in model container [2021-11-23 03:14:41,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:14:41" (3/3) ... [2021-11-23 03:14:41,900 INFO L111 eAbstractionObserver]: Analyzing ICFG cdaudio_simpl1.cil-1.c [2021-11-23 03:14:41,905 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:14:41,906 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-23 03:14:41,951 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:14:41,956 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:14:41,957 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-23 03:14:41,990 INFO L276 IsEmpty]: Start isEmpty. Operand has 471 states, 368 states have (on average 1.5108695652173914) internal successors, (556), 388 states have internal predecessors, (556), 87 states have call successors, (87), 13 states have call predecessors, (87), 13 states have return successors, (87), 82 states have call predecessors, (87), 87 states have call successors, (87) [2021-11-23 03:14:41,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 03:14:42,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:42,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:42,009 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:42,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:42,015 INFO L85 PathProgramCache]: Analyzing trace with hash 2107937846, now seen corresponding path program 1 times [2021-11-23 03:14:42,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:14:42,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1950329319] [2021-11-23 03:14:42,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:42,027 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:14:42,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:14:42,028 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:14:42,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 03:14:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:42,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:14:42,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:14:42,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:42,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:14:42,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:42,285 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:14:42,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1950329319] [2021-11-23 03:14:42,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1950329319] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:42,286 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:42,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 03:14:42,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014341175] [2021-11-23 03:14:42,289 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:42,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:14:42,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:14:42,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:14:42,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:14:42,340 INFO L87 Difference]: Start difference. First operand has 471 states, 368 states have (on average 1.5108695652173914) internal successors, (556), 388 states have internal predecessors, (556), 87 states have call successors, (87), 13 states have call predecessors, (87), 13 states have return successors, (87), 82 states have call predecessors, (87), 87 states have call successors, (87) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:42,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:42,539 INFO L93 Difference]: Finished difference Result 638 states and 943 transitions. [2021-11-23 03:14:42,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:14:42,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-23 03:14:42,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:42,564 INFO L225 Difference]: With dead ends: 638 [2021-11-23 03:14:42,564 INFO L226 Difference]: Without dead ends: 632 [2021-11-23 03:14:42,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:14:42,569 INFO L933 BasicCegarLoop]: 730 mSDtfsCounter, 716 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:42,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [716 Valid, 1168 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:14:42,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-23 03:14:42,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 603. [2021-11-23 03:14:42,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 486 states have (on average 1.4732510288065843) internal successors, (716), 494 states have internal predecessors, (716), 94 states have call successors, (94), 18 states have call predecessors, (94), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2021-11-23 03:14:42,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 904 transitions. [2021-11-23 03:14:42,698 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 904 transitions. Word has length 8 [2021-11-23 03:14:42,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:42,699 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 904 transitions. [2021-11-23 03:14:42,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:42,699 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 904 transitions. [2021-11-23 03:14:42,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 03:14:42,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:42,700 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:42,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:14:42,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:14:42,917 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:42,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:42,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1313128955, now seen corresponding path program 1 times [2021-11-23 03:14:42,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:14:42,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545959422] [2021-11-23 03:14:42,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:42,919 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:14:42,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:14:42,920 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:14:42,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 03:14:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:43,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:14:43,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:14:43,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:43,090 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:14:43,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:43,112 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:14:43,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545959422] [2021-11-23 03:14:43,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545959422] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:43,112 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:43,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:14:43,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253559349] [2021-11-23 03:14:43,113 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:43,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:43,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:14:43,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:43,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:43,116 INFO L87 Difference]: Start difference. First operand 603 states and 904 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:43,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:43,163 INFO L93 Difference]: Finished difference Result 606 states and 905 transitions. [2021-11-23 03:14:43,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:43,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 03:14:43,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:43,170 INFO L225 Difference]: With dead ends: 606 [2021-11-23 03:14:43,170 INFO L226 Difference]: Without dead ends: 606 [2021-11-23 03:14:43,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:43,172 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 385 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 946 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:43,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 946 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:14:43,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2021-11-23 03:14:43,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 603. [2021-11-23 03:14:43,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 486 states have (on average 1.47119341563786) internal successors, (715), 494 states have internal predecessors, (715), 94 states have call successors, (94), 18 states have call predecessors, (94), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2021-11-23 03:14:43,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 903 transitions. [2021-11-23 03:14:43,257 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 903 transitions. Word has length 9 [2021-11-23 03:14:43,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:43,258 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 903 transitions. [2021-11-23 03:14:43,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:43,259 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 903 transitions. [2021-11-23 03:14:43,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 03:14:43,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:43,262 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:43,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:14:43,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:14:43,480 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:43,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:43,480 INFO L85 PathProgramCache]: Analyzing trace with hash 929457737, now seen corresponding path program 1 times [2021-11-23 03:14:43,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:14:43,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [489868787] [2021-11-23 03:14:43,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:43,482 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:14:43,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:14:43,483 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:14:43,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 03:14:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:43,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:14:43,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:14:43,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:43,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:14:43,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:43,703 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:14:43,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [489868787] [2021-11-23 03:14:43,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [489868787] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:43,703 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:43,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 03:14:43,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547176422] [2021-11-23 03:14:43,704 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:43,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:43,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:14:43,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:43,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:43,706 INFO L87 Difference]: Start difference. First operand 603 states and 903 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:43,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:43,838 INFO L93 Difference]: Finished difference Result 602 states and 902 transitions. [2021-11-23 03:14:43,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:43,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 03:14:43,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:43,844 INFO L225 Difference]: With dead ends: 602 [2021-11-23 03:14:43,844 INFO L226 Difference]: Without dead ends: 599 [2021-11-23 03:14:43,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:43,846 INFO L933 BasicCegarLoop]: 703 mSDtfsCounter, 418 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:43,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 850 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:14:43,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-11-23 03:14:43,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2021-11-23 03:14:43,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 483 states have (on average 1.453416149068323) internal successors, (702), 490 states have internal predecessors, (702), 94 states have call successors, (94), 18 states have call predecessors, (94), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2021-11-23 03:14:43,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 890 transitions. [2021-11-23 03:14:43,877 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 890 transitions. Word has length 9 [2021-11-23 03:14:43,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:43,878 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 890 transitions. [2021-11-23 03:14:43,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:43,878 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 890 transitions. [2021-11-23 03:14:43,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 03:14:43,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:43,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:43,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:14:44,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:14:44,094 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:44,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:44,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1469618489, now seen corresponding path program 1 times [2021-11-23 03:14:44,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:14:44,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991851073] [2021-11-23 03:14:44,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:44,095 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:14:44,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:14:44,096 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:14:44,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 03:14:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:44,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:14:44,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:14:44,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:44,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:14:44,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:44,274 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:14:44,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [991851073] [2021-11-23 03:14:44,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [991851073] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:44,276 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:44,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:14:44,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283489175] [2021-11-23 03:14:44,278 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:44,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:44,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:14:44,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:44,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:44,281 INFO L87 Difference]: Start difference. First operand 599 states and 890 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:44,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:44,368 INFO L93 Difference]: Finished difference Result 602 states and 892 transitions. [2021-11-23 03:14:44,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:44,369 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 03:14:44,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:44,376 INFO L225 Difference]: With dead ends: 602 [2021-11-23 03:14:44,376 INFO L226 Difference]: Without dead ends: 599 [2021-11-23 03:14:44,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:44,386 INFO L933 BasicCegarLoop]: 693 mSDtfsCounter, 0 mSDsluCounter, 642 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1335 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:44,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1335 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:14:44,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-11-23 03:14:44,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 599. [2021-11-23 03:14:44,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 483 states have (on average 1.4513457556935818) internal successors, (701), 490 states have internal predecessors, (701), 94 states have call successors, (94), 18 states have call predecessors, (94), 21 states have return successors, (94), 94 states have call predecessors, (94), 79 states have call successors, (94) [2021-11-23 03:14:44,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 889 transitions. [2021-11-23 03:14:44,446 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 889 transitions. Word has length 13 [2021-11-23 03:14:44,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:44,447 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 889 transitions. [2021-11-23 03:14:44,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:44,447 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 889 transitions. [2021-11-23 03:14:44,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 03:14:44,449 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:44,449 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:44,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 03:14:44,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:14:44,665 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:44,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:44,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1712839809, now seen corresponding path program 1 times [2021-11-23 03:14:44,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:14:44,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987103763] [2021-11-23 03:14:44,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:44,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:14:44,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:14:44,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:14:44,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 03:14:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:44,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:14:44,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:14:44,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:44,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:14:44,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:44,882 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:14:44,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987103763] [2021-11-23 03:14:44,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [987103763] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:44,882 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:44,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:14:44,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562998919] [2021-11-23 03:14:44,883 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:44,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:44,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:14:44,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:44,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:44,884 INFO L87 Difference]: Start difference. First operand 599 states and 889 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:45,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:45,128 INFO L93 Difference]: Finished difference Result 841 states and 1229 transitions. [2021-11-23 03:14:45,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:45,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 03:14:45,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:45,138 INFO L225 Difference]: With dead ends: 841 [2021-11-23 03:14:45,138 INFO L226 Difference]: Without dead ends: 840 [2021-11-23 03:14:45,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:45,140 INFO L933 BasicCegarLoop]: 795 mSDtfsCounter, 562 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 1020 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:45,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 1020 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:45,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-11-23 03:14:45,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 774. [2021-11-23 03:14:45,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 632 states have (on average 1.4367088607594938) internal successors, (908), 634 states have internal predecessors, (908), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (128), 112 states have call predecessors, (128), 96 states have call successors, (128) [2021-11-23 03:14:45,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1143 transitions. [2021-11-23 03:14:45,184 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1143 transitions. Word has length 15 [2021-11-23 03:14:45,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:45,185 INFO L470 AbstractCegarLoop]: Abstraction has 774 states and 1143 transitions. [2021-11-23 03:14:45,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:45,185 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1143 transitions. [2021-11-23 03:14:45,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 03:14:45,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:45,193 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:45,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 03:14:45,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:14:45,417 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:45,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:45,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1930286977, now seen corresponding path program 1 times [2021-11-23 03:14:45,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:14:45,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92158480] [2021-11-23 03:14:45,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:45,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:14:45,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:14:45,419 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:14:45,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 03:14:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:45,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 03:14:45,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:14:45,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:45,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:14:45,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:45,679 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:14:45,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92158480] [2021-11-23 03:14:45,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92158480] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:45,680 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:45,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:14:45,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420791803] [2021-11-23 03:14:45,680 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:45,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:45,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:14:45,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:45,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:45,682 INFO L87 Difference]: Start difference. First operand 774 states and 1143 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:45,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:45,732 INFO L93 Difference]: Finished difference Result 868 states and 1264 transitions. [2021-11-23 03:14:45,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:45,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-23 03:14:45,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:45,743 INFO L225 Difference]: With dead ends: 868 [2021-11-23 03:14:45,743 INFO L226 Difference]: Without dead ends: 868 [2021-11-23 03:14:45,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:45,745 INFO L933 BasicCegarLoop]: 682 mSDtfsCounter, 601 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 601 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:45,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [601 Valid, 870 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:14:45,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 868 states. [2021-11-23 03:14:45,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 868 to 840. [2021-11-23 03:14:45,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 692 states have (on average 1.44364161849711) internal successors, (999), 697 states have internal predecessors, (999), 106 states have call successors, (106), 35 states have call predecessors, (106), 41 states have return successors, (127), 107 states have call predecessors, (127), 98 states have call successors, (127) [2021-11-23 03:14:45,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1232 transitions. [2021-11-23 03:14:45,785 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1232 transitions. Word has length 19 [2021-11-23 03:14:45,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:45,786 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 1232 transitions. [2021-11-23 03:14:45,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:45,786 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1232 transitions. [2021-11-23 03:14:45,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-23 03:14:45,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:45,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:45,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 03:14:46,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:14:46,000 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:46,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:46,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1396316142, now seen corresponding path program 1 times [2021-11-23 03:14:46,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:14:46,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108644148] [2021-11-23 03:14:46,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:46,001 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:14:46,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:14:46,002 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:14:46,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 03:14:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:46,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:14:46,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:14:46,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:46,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:14:46,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:46,348 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:14:46,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108644148] [2021-11-23 03:14:46,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108644148] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:46,348 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:46,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 03:14:46,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371567435] [2021-11-23 03:14:46,349 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:46,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:14:46,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:14:46,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:14:46,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:14:46,350 INFO L87 Difference]: Start difference. First operand 840 states and 1232 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:47,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:47,114 INFO L93 Difference]: Finished difference Result 1033 states and 1505 transitions. [2021-11-23 03:14:47,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:14:47,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-23 03:14:47,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:47,122 INFO L225 Difference]: With dead ends: 1033 [2021-11-23 03:14:47,122 INFO L226 Difference]: Without dead ends: 1033 [2021-11-23 03:14:47,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:14:47,124 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 2079 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2082 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:47,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2082 Valid, 932 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [549 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 03:14:47,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2021-11-23 03:14:47,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 909. [2021-11-23 03:14:47,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 909 states, 749 states have (on average 1.4339118825100134) internal successors, (1074), 754 states have internal predecessors, (1074), 112 states have call successors, (112), 41 states have call predecessors, (112), 47 states have return successors, (148), 113 states have call predecessors, (148), 104 states have call successors, (148) [2021-11-23 03:14:47,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 909 states to 909 states and 1334 transitions. [2021-11-23 03:14:47,162 INFO L78 Accepts]: Start accepts. Automaton has 909 states and 1334 transitions. Word has length 21 [2021-11-23 03:14:47,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:47,163 INFO L470 AbstractCegarLoop]: Abstraction has 909 states and 1334 transitions. [2021-11-23 03:14:47,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:47,163 INFO L276 IsEmpty]: Start isEmpty. Operand 909 states and 1334 transitions. [2021-11-23 03:14:47,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 03:14:47,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:47,165 INFO L514 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] [2021-11-23 03:14:47,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 03:14:47,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:14:47,384 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:47,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:47,384 INFO L85 PathProgramCache]: Analyzing trace with hash -401986427, now seen corresponding path program 1 times [2021-11-23 03:14:47,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:14:47,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490148677] [2021-11-23 03:14:47,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:47,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:14:47,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:14:47,386 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:14:47,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-23 03:14:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:47,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:14:47,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:14:47,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:47,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:14:47,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:47,608 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:14:47,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490148677] [2021-11-23 03:14:47,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490148677] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:47,608 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:47,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:14:47,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163415513] [2021-11-23 03:14:47,609 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:47,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:47,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:14:47,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:47,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:47,610 INFO L87 Difference]: Start difference. First operand 909 states and 1334 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:47,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:47,700 INFO L93 Difference]: Finished difference Result 908 states and 1331 transitions. [2021-11-23 03:14:47,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:47,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-23 03:14:47,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:47,707 INFO L225 Difference]: With dead ends: 908 [2021-11-23 03:14:47,707 INFO L226 Difference]: Without dead ends: 908 [2021-11-23 03:14:47,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:47,708 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 22 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:47,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 1254 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:14:47,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2021-11-23 03:14:47,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 908. [2021-11-23 03:14:47,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 908 states, 749 states have (on average 1.431241655540721) internal successors, (1072), 753 states have internal predecessors, (1072), 111 states have call successors, (111), 41 states have call predecessors, (111), 47 states have return successors, (148), 113 states have call predecessors, (148), 104 states have call successors, (148) [2021-11-23 03:14:47,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 908 states to 908 states and 1331 transitions. [2021-11-23 03:14:47,739 INFO L78 Accepts]: Start accepts. Automaton has 908 states and 1331 transitions. Word has length 23 [2021-11-23 03:14:47,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:47,740 INFO L470 AbstractCegarLoop]: Abstraction has 908 states and 1331 transitions. [2021-11-23 03:14:47,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:47,740 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states and 1331 transitions. [2021-11-23 03:14:47,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 03:14:47,743 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:47,743 INFO L514 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] [2021-11-23 03:14:47,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-23 03:14:47,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:14:47,955 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:47,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:47,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1380818810, now seen corresponding path program 1 times [2021-11-23 03:14:47,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:14:47,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392999566] [2021-11-23 03:14:47,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:47,956 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:14:47,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:14:47,957 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:14:47,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-23 03:14:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:48,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:14:48,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:14:48,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:48,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:14:48,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:48,201 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:14:48,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392999566] [2021-11-23 03:14:48,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392999566] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:48,201 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:48,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:14:48,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960296625] [2021-11-23 03:14:48,202 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:48,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:48,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:14:48,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:48,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:48,203 INFO L87 Difference]: Start difference. First operand 908 states and 1331 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:48,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:48,238 INFO L93 Difference]: Finished difference Result 848 states and 1222 transitions. [2021-11-23 03:14:48,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:48,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2021-11-23 03:14:48,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:48,245 INFO L225 Difference]: With dead ends: 848 [2021-11-23 03:14:48,245 INFO L226 Difference]: Without dead ends: 848 [2021-11-23 03:14:48,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:48,246 INFO L933 BasicCegarLoop]: 740 mSDtfsCounter, 160 mSDsluCounter, 573 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1313 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:48,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 1313 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:14:48,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2021-11-23 03:14:48,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 776. [2021-11-23 03:14:48,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 642 states have (on average 1.4299065420560748) internal successors, (918), 648 states have internal predecessors, (918), 94 states have call successors, (94), 33 states have call predecessors, (94), 39 states have return successors, (117), 94 states have call predecessors, (117), 87 states have call successors, (117) [2021-11-23 03:14:48,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1129 transitions. [2021-11-23 03:14:48,277 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1129 transitions. Word has length 35 [2021-11-23 03:14:48,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:48,278 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 1129 transitions. [2021-11-23 03:14:48,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:48,278 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1129 transitions. [2021-11-23 03:14:48,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-23 03:14:48,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:48,281 INFO L514 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] [2021-11-23 03:14:48,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-23 03:14:48,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:14:48,493 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:48,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:48,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1008894010, now seen corresponding path program 1 times [2021-11-23 03:14:48,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:14:48,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685345153] [2021-11-23 03:14:48,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:48,494 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:14:48,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:14:48,495 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:14:48,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-23 03:14:48,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:48,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:14:48,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:14:48,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:48,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:14:48,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:48,878 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:14:48,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685345153] [2021-11-23 03:14:48,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685345153] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:48,879 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:48,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 03:14:48,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876241514] [2021-11-23 03:14:48,879 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:48,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:14:48,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:14:48,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:14:48,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:14:48,880 INFO L87 Difference]: Start difference. First operand 776 states and 1129 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:49,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:49,425 INFO L93 Difference]: Finished difference Result 790 states and 1144 transitions. [2021-11-23 03:14:49,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:14:49,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-23 03:14:49,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:49,431 INFO L225 Difference]: With dead ends: 790 [2021-11-23 03:14:49,432 INFO L226 Difference]: Without dead ends: 790 [2021-11-23 03:14:49,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:14:49,433 INFO L933 BasicCegarLoop]: 642 mSDtfsCounter, 1238 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:49,433 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1238 Valid, 1111 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 03:14:49,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2021-11-23 03:14:49,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 776. [2021-11-23 03:14:49,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 642 states have (on average 1.426791277258567) internal successors, (916), 648 states have internal predecessors, (916), 94 states have call successors, (94), 33 states have call predecessors, (94), 39 states have return successors, (117), 94 states have call predecessors, (117), 87 states have call successors, (117) [2021-11-23 03:14:49,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1127 transitions. [2021-11-23 03:14:49,461 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1127 transitions. Word has length 32 [2021-11-23 03:14:49,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:49,462 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 1127 transitions. [2021-11-23 03:14:49,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:49,462 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1127 transitions. [2021-11-23 03:14:49,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 03:14:49,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:49,465 INFO L514 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, 1] [2021-11-23 03:14:49,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-23 03:14:49,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:14:49,677 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:49,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:49,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1889417613, now seen corresponding path program 1 times [2021-11-23 03:14:49,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:14:49,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1674013634] [2021-11-23 03:14:49,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:49,678 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:14:49,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:14:49,679 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:14:49,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-23 03:14:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:49,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:14:49,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:14:49,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:49,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:14:49,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:49,989 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:14:49,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1674013634] [2021-11-23 03:14:49,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1674013634] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:49,990 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:49,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 5 [2021-11-23 03:14:49,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911254739] [2021-11-23 03:14:49,990 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:49,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:14:49,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:14:49,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:14:49,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:14:49,992 INFO L87 Difference]: Start difference. First operand 776 states and 1127 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:50,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:50,360 INFO L93 Difference]: Finished difference Result 679 states and 976 transitions. [2021-11-23 03:14:50,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:14:50,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2021-11-23 03:14:50,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:50,365 INFO L225 Difference]: With dead ends: 679 [2021-11-23 03:14:50,366 INFO L226 Difference]: Without dead ends: 679 [2021-11-23 03:14:50,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:14:50,367 INFO L933 BasicCegarLoop]: 724 mSDtfsCounter, 871 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:50,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [871 Valid, 1296 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:14:50,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2021-11-23 03:14:50,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 654. [2021-11-23 03:14:50,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 539 states have (on average 1.4230055658627088) internal successors, (767), 545 states have internal predecessors, (767), 86 states have call successors, (86), 26 states have call predecessors, (86), 28 states have return successors, (94), 82 states have call predecessors, (94), 79 states have call successors, (94) [2021-11-23 03:14:50,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 947 transitions. [2021-11-23 03:14:50,388 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 947 transitions. Word has length 36 [2021-11-23 03:14:50,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:50,388 INFO L470 AbstractCegarLoop]: Abstraction has 654 states and 947 transitions. [2021-11-23 03:14:50,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 4 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:50,389 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 947 transitions. [2021-11-23 03:14:50,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-23 03:14:50,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:50,391 INFO L514 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, 1] [2021-11-23 03:14:50,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-23 03:14:50,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:14:50,603 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:50,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:50,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1030908419, now seen corresponding path program 1 times [2021-11-23 03:14:50,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:14:50,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056106636] [2021-11-23 03:14:50,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:50,604 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:14:50,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:14:50,605 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:14:50,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-23 03:14:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:50,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:14:50,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:14:50,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:50,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:14:50,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:50,866 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:14:50,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056106636] [2021-11-23 03:14:50,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056106636] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:50,867 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:50,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:14:50,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080745293] [2021-11-23 03:14:50,867 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:50,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:50,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:14:50,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:50,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:50,869 INFO L87 Difference]: Start difference. First operand 654 states and 947 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:50,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:50,894 INFO L93 Difference]: Finished difference Result 673 states and 966 transitions. [2021-11-23 03:14:50,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:50,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2021-11-23 03:14:50,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:50,899 INFO L225 Difference]: With dead ends: 673 [2021-11-23 03:14:50,899 INFO L226 Difference]: Without dead ends: 673 [2021-11-23 03:14:50,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:50,900 INFO L933 BasicCegarLoop]: 661 mSDtfsCounter, 569 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 569 SdHoareTripleChecker+Valid, 818 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:50,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [569 Valid, 818 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:14:50,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673 states. [2021-11-23 03:14:50,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673 to 653. [2021-11-23 03:14:50,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 538 states have (on average 1.420074349442379) internal successors, (764), 544 states have internal predecessors, (764), 86 states have call successors, (86), 26 states have call predecessors, (86), 28 states have return successors, (92), 82 states have call predecessors, (92), 79 states have call successors, (92) [2021-11-23 03:14:50,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 942 transitions. [2021-11-23 03:14:50,923 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 942 transitions. Word has length 36 [2021-11-23 03:14:50,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:50,927 INFO L470 AbstractCegarLoop]: Abstraction has 653 states and 942 transitions. [2021-11-23 03:14:50,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:50,928 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 942 transitions. [2021-11-23 03:14:50,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 03:14:50,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:50,931 INFO L514 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] [2021-11-23 03:14:50,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-23 03:14:51,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:14:51,143 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:51,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:51,143 INFO L85 PathProgramCache]: Analyzing trace with hash 138802049, now seen corresponding path program 1 times [2021-11-23 03:14:51,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:14:51,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651235865] [2021-11-23 03:14:51,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:51,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:14:51,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:14:51,146 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:14:51,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-23 03:14:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:51,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:14:51,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:14:51,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:51,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:14:51,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:51,430 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:14:51,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651235865] [2021-11-23 03:14:51,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651235865] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:51,430 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:51,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:14:51,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788174137] [2021-11-23 03:14:51,431 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:51,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:51,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:14:51,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:51,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:51,432 INFO L87 Difference]: Start difference. First operand 653 states and 942 transitions. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:51,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:51,540 INFO L93 Difference]: Finished difference Result 805 states and 1151 transitions. [2021-11-23 03:14:51,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:51,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-23 03:14:51,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:51,548 INFO L225 Difference]: With dead ends: 805 [2021-11-23 03:14:51,548 INFO L226 Difference]: Without dead ends: 805 [2021-11-23 03:14:51,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:51,549 INFO L933 BasicCegarLoop]: 764 mSDtfsCounter, 135 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:51,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 1380 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:14:51,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-11-23 03:14:51,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 704. [2021-11-23 03:14:51,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 585 states have (on average 1.393162393162393) internal successors, (815), 584 states have internal predecessors, (815), 86 states have call successors, (86), 26 states have call predecessors, (86), 32 states have return successors, (103), 93 states have call predecessors, (103), 79 states have call successors, (103) [2021-11-23 03:14:51,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 1004 transitions. [2021-11-23 03:14:51,578 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 1004 transitions. Word has length 34 [2021-11-23 03:14:51,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:51,579 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 1004 transitions. [2021-11-23 03:14:51,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:51,579 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 1004 transitions. [2021-11-23 03:14:51,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 03:14:51,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:51,582 INFO L514 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] [2021-11-23 03:14:51,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-23 03:14:51,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:14:51,794 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:51,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:51,795 INFO L85 PathProgramCache]: Analyzing trace with hash -298326081, now seen corresponding path program 1 times [2021-11-23 03:14:51,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:14:51,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077011107] [2021-11-23 03:14:51,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:51,796 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:14:51,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:14:51,797 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:14:51,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-23 03:14:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:51,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:14:51,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:14:52,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:52,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:14:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:52,179 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:14:52,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077011107] [2021-11-23 03:14:52,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077011107] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:52,180 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:52,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 03:14:52,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452089181] [2021-11-23 03:14:52,180 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:52,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:14:52,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:14:52,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:14:52,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:14:52,182 INFO L87 Difference]: Start difference. First operand 704 states and 1004 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:52,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:52,787 INFO L93 Difference]: Finished difference Result 687 states and 975 transitions. [2021-11-23 03:14:52,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:14:52,788 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-23 03:14:52,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:52,792 INFO L225 Difference]: With dead ends: 687 [2021-11-23 03:14:52,792 INFO L226 Difference]: Without dead ends: 687 [2021-11-23 03:14:52,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:14:52,793 INFO L933 BasicCegarLoop]: 644 mSDtfsCounter, 1184 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:52,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1184 Valid, 1566 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 03:14:52,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2021-11-23 03:14:52,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 685. [2021-11-23 03:14:52,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 568 states have (on average 1.397887323943662) internal successors, (794), 574 states have internal predecessors, (794), 86 states have call successors, (86), 26 states have call predecessors, (86), 30 states have return successors, (94), 84 states have call predecessors, (94), 79 states have call successors, (94) [2021-11-23 03:14:52,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 974 transitions. [2021-11-23 03:14:52,823 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 974 transitions. Word has length 34 [2021-11-23 03:14:52,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:52,824 INFO L470 AbstractCegarLoop]: Abstraction has 685 states and 974 transitions. [2021-11-23 03:14:52,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:52,824 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 974 transitions. [2021-11-23 03:14:52,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 03:14:52,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:52,827 INFO L514 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] [2021-11-23 03:14:52,838 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-23 03:14:53,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:14:53,038 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:53,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:53,039 INFO L85 PathProgramCache]: Analyzing trace with hash 452395651, now seen corresponding path program 1 times [2021-11-23 03:14:53,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:14:53,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659958358] [2021-11-23 03:14:53,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:53,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:14:53,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:14:53,040 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:14:53,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-23 03:14:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:53,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:14:53,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:14:53,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:53,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:14:53,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:53,448 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:14:53,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659958358] [2021-11-23 03:14:53,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659958358] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:53,448 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:53,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 03:14:53,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921593222] [2021-11-23 03:14:53,449 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:53,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:14:53,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:14:53,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:14:53,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:14:53,450 INFO L87 Difference]: Start difference. First operand 685 states and 974 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:54,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:54,102 INFO L93 Difference]: Finished difference Result 786 states and 1119 transitions. [2021-11-23 03:14:54,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:14:54,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-23 03:14:54,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:54,107 INFO L225 Difference]: With dead ends: 786 [2021-11-23 03:14:54,107 INFO L226 Difference]: Without dead ends: 786 [2021-11-23 03:14:54,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:14:54,108 INFO L933 BasicCegarLoop]: 737 mSDtfsCounter, 1245 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:54,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1254 Valid, 1655 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 373 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 03:14:54,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2021-11-23 03:14:54,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 688. [2021-11-23 03:14:54,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 571 states have (on average 1.3975481611208407) internal successors, (798), 577 states have internal predecessors, (798), 86 states have call successors, (86), 26 states have call predecessors, (86), 30 states have return successors, (94), 84 states have call predecessors, (94), 79 states have call successors, (94) [2021-11-23 03:14:54,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 978 transitions. [2021-11-23 03:14:54,132 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 978 transitions. Word has length 35 [2021-11-23 03:14:54,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:54,133 INFO L470 AbstractCegarLoop]: Abstraction has 688 states and 978 transitions. [2021-11-23 03:14:54,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:54,133 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 978 transitions. [2021-11-23 03:14:54,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 03:14:54,136 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:54,136 INFO L514 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] [2021-11-23 03:14:54,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-23 03:14:54,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:14:54,347 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:54,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:54,348 INFO L85 PathProgramCache]: Analyzing trace with hash 452672481, now seen corresponding path program 1 times [2021-11-23 03:14:54,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:14:54,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867476303] [2021-11-23 03:14:54,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:54,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:14:54,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:14:54,350 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:14:54,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-23 03:14:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:54,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 03:14:54,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:14:54,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:54,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:14:54,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:54,758 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:14:54,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867476303] [2021-11-23 03:14:54,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867476303] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:54,758 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:54,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2021-11-23 03:14:54,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696574086] [2021-11-23 03:14:54,759 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:54,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:14:54,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:14:54,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:14:54,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:14:54,760 INFO L87 Difference]: Start difference. First operand 688 states and 978 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:54,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:54,993 INFO L93 Difference]: Finished difference Result 714 states and 1004 transitions. [2021-11-23 03:14:54,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 03:14:54,994 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-23 03:14:54,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:55,001 INFO L225 Difference]: With dead ends: 714 [2021-11-23 03:14:55,001 INFO L226 Difference]: Without dead ends: 671 [2021-11-23 03:14:55,002 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:14:55,002 INFO L933 BasicCegarLoop]: 650 mSDtfsCounter, 79 mSDsluCounter, 5128 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 5778 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:55,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 5778 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:14:55,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2021-11-23 03:14:55,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 671. [2021-11-23 03:14:55,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 554 states have (on average 1.404332129963899) internal successors, (778), 560 states have internal predecessors, (778), 86 states have call successors, (86), 26 states have call predecessors, (86), 30 states have return successors, (94), 84 states have call predecessors, (94), 79 states have call successors, (94) [2021-11-23 03:14:55,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 958 transitions. [2021-11-23 03:14:55,027 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 958 transitions. Word has length 35 [2021-11-23 03:14:55,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:55,027 INFO L470 AbstractCegarLoop]: Abstraction has 671 states and 958 transitions. [2021-11-23 03:14:55,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:14:55,027 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 958 transitions. [2021-11-23 03:14:55,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 03:14:55,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:55,030 INFO L514 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, 1, 1] [2021-11-23 03:14:55,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-23 03:14:55,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:14:55,243 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:55,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:55,244 INFO L85 PathProgramCache]: Analyzing trace with hash 2080196380, now seen corresponding path program 1 times [2021-11-23 03:14:55,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:14:55,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94390597] [2021-11-23 03:14:55,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:55,245 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:14:55,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:14:55,245 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:14:55,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-23 03:14:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:55,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:14:55,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:14:55,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:55,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:14:55,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:55,504 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:14:55,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94390597] [2021-11-23 03:14:55,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94390597] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:55,505 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:55,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 03:14:55,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159642236] [2021-11-23 03:14:55,505 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:55,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:14:55,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:14:55,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:14:55,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:14:55,507 INFO L87 Difference]: Start difference. First operand 671 states and 958 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:55,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:55,695 INFO L93 Difference]: Finished difference Result 781 states and 1099 transitions. [2021-11-23 03:14:55,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:14:55,696 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2021-11-23 03:14:55,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:55,699 INFO L225 Difference]: With dead ends: 781 [2021-11-23 03:14:55,699 INFO L226 Difference]: Without dead ends: 781 [2021-11-23 03:14:55,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:14:55,700 INFO L933 BasicCegarLoop]: 631 mSDtfsCounter, 216 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:55,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 1936 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:14:55,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-11-23 03:14:55,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 677. [2021-11-23 03:14:55,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 560 states have (on average 1.4053571428571427) internal successors, (787), 566 states have internal predecessors, (787), 86 states have call successors, (86), 26 states have call predecessors, (86), 30 states have return successors, (94), 84 states have call predecessors, (94), 79 states have call successors, (94) [2021-11-23 03:14:55,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 967 transitions. [2021-11-23 03:14:55,719 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 967 transitions. Word has length 37 [2021-11-23 03:14:55,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:55,719 INFO L470 AbstractCegarLoop]: Abstraction has 677 states and 967 transitions. [2021-11-23 03:14:55,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-23 03:14:55,719 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 967 transitions. [2021-11-23 03:14:55,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 03:14:55,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:55,722 INFO L514 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, 1, 1] [2021-11-23 03:14:55,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-23 03:14:55,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:14:55,933 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:55,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:55,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1792069090, now seen corresponding path program 1 times [2021-11-23 03:14:55,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:14:55,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287011529] [2021-11-23 03:14:55,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:55,934 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:14:55,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:14:55,935 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:14:55,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-23 03:14:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:56,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:14:56,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:14:56,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:56,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:14:56,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:56,196 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:14:56,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287011529] [2021-11-23 03:14:56,196 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287011529] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:56,196 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:56,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:14:56,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693793260] [2021-11-23 03:14:56,196 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:56,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:14:56,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:14:56,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:14:56,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:56,197 INFO L87 Difference]: Start difference. First operand 677 states and 967 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:14:56,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:56,267 INFO L93 Difference]: Finished difference Result 697 states and 989 transitions. [2021-11-23 03:14:56,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:14:56,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-11-23 03:14:56,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:56,272 INFO L225 Difference]: With dead ends: 697 [2021-11-23 03:14:56,272 INFO L226 Difference]: Without dead ends: 695 [2021-11-23 03:14:56,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:14:56,273 INFO L933 BasicCegarLoop]: 632 mSDtfsCounter, 63 mSDsluCounter, 548 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:56,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 1180 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:14:56,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2021-11-23 03:14:56,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 691. [2021-11-23 03:14:56,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 574 states have (on average 1.4006968641114983) internal successors, (804), 580 states have internal predecessors, (804), 86 states have call successors, (86), 26 states have call predecessors, (86), 30 states have return successors, (94), 84 states have call predecessors, (94), 79 states have call successors, (94) [2021-11-23 03:14:56,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 984 transitions. [2021-11-23 03:14:56,293 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 984 transitions. Word has length 37 [2021-11-23 03:14:56,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:56,293 INFO L470 AbstractCegarLoop]: Abstraction has 691 states and 984 transitions. [2021-11-23 03:14:56,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-23 03:14:56,293 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 984 transitions. [2021-11-23 03:14:56,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-23 03:14:56,296 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:56,296 INFO L514 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, 1, 1, 1, 1] [2021-11-23 03:14:56,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-23 03:14:56,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:14:56,515 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:56,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:56,516 INFO L85 PathProgramCache]: Analyzing trace with hash 366960515, now seen corresponding path program 1 times [2021-11-23 03:14:56,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:14:56,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938492425] [2021-11-23 03:14:56,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:56,517 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:14:56,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:14:56,518 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:14:56,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-23 03:14:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:56,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:14:56,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:14:56,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:56,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:14:56,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:56,967 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:14:56,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938492425] [2021-11-23 03:14:56,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938492425] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:56,967 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:56,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 03:14:56,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127246920] [2021-11-23 03:14:56,968 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:56,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:14:56,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:14:56,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:14:56,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:14:56,969 INFO L87 Difference]: Start difference. First operand 691 states and 984 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:57,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:57,483 INFO L93 Difference]: Finished difference Result 826 states and 1167 transitions. [2021-11-23 03:14:57,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:14:57,483 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2021-11-23 03:14:57,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:57,488 INFO L225 Difference]: With dead ends: 826 [2021-11-23 03:14:57,488 INFO L226 Difference]: Without dead ends: 824 [2021-11-23 03:14:57,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:14:57,489 INFO L933 BasicCegarLoop]: 679 mSDtfsCounter, 1353 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 1137 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:57,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1356 Valid, 1137 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-23 03:14:57,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2021-11-23 03:14:57,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 720. [2021-11-23 03:14:57,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 601 states have (on average 1.3876871880199668) internal successors, (834), 607 states have internal predecessors, (834), 86 states have call successors, (86), 26 states have call predecessors, (86), 32 states have return successors, (96), 86 states have call predecessors, (96), 79 states have call successors, (96) [2021-11-23 03:14:57,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 1016 transitions. [2021-11-23 03:14:57,510 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 1016 transitions. Word has length 39 [2021-11-23 03:14:57,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:57,511 INFO L470 AbstractCegarLoop]: Abstraction has 720 states and 1016 transitions. [2021-11-23 03:14:57,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:57,511 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 1016 transitions. [2021-11-23 03:14:57,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-23 03:14:57,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:57,513 INFO L514 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, 1, 1, 1, 1, 1] [2021-11-23 03:14:57,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-23 03:14:57,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:14:57,725 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:57,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:57,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1196068657, now seen corresponding path program 1 times [2021-11-23 03:14:57,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:14:57,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622085952] [2021-11-23 03:14:57,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:57,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:14:57,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:14:57,727 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:14:57,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-23 03:14:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:57,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:14:57,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:14:57,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:57,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:14:58,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:58,092 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:14:58,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1622085952] [2021-11-23 03:14:58,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1622085952] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:58,093 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:58,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-23 03:14:58,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579367473] [2021-11-23 03:14:58,093 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:58,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:14:58,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:14:58,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:14:58,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:14:58,095 INFO L87 Difference]: Start difference. First operand 720 states and 1016 transitions. Second operand has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:58,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:14:58,550 INFO L93 Difference]: Finished difference Result 771 states and 1075 transitions. [2021-11-23 03:14:58,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 03:14:58,551 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2021-11-23 03:14:58,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:14:58,555 INFO L225 Difference]: With dead ends: 771 [2021-11-23 03:14:58,555 INFO L226 Difference]: Without dead ends: 665 [2021-11-23 03:14:58,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-11-23 03:14:58,556 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 212 mSDsluCounter, 4256 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 4864 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:14:58,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 4864 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:14:58,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2021-11-23 03:14:58,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 662. [2021-11-23 03:14:58,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 555 states have (on average 1.3441441441441442) internal successors, (746), 561 states have internal predecessors, (746), 74 states have call successors, (74), 26 states have call predecessors, (74), 32 states have return successors, (84), 74 states have call predecessors, (84), 67 states have call successors, (84) [2021-11-23 03:14:58,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 904 transitions. [2021-11-23 03:14:58,586 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 904 transitions. Word has length 40 [2021-11-23 03:14:58,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:14:58,586 INFO L470 AbstractCegarLoop]: Abstraction has 662 states and 904 transitions. [2021-11-23 03:14:58,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.666666666666667) internal successors, (56), 12 states have internal predecessors, (56), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-23 03:14:58,587 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 904 transitions. [2021-11-23 03:14:58,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 03:14:58,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:14:58,589 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:14:58,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-23 03:14:58,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:14:58,801 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:14:58,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:14:58,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1438594100, now seen corresponding path program 1 times [2021-11-23 03:14:58,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:14:58,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571929742] [2021-11-23 03:14:58,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:14:58,802 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:14:58,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:14:58,803 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:14:58,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-23 03:14:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:14:58,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 03:14:58,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:14:59,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:59,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:14:59,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:14:59,258 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:14:59,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571929742] [2021-11-23 03:14:59,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571929742] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:14:59,259 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:14:59,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-23 03:14:59,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030524786] [2021-11-23 03:14:59,259 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:14:59,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:14:59,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:14:59,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:14:59,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:14:59,260 INFO L87 Difference]: Start difference. First operand 662 states and 904 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 10 states have internal predecessors, (65), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:15:00,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:00,130 INFO L93 Difference]: Finished difference Result 1145 states and 1559 transitions. [2021-11-23 03:15:00,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 03:15:00,131 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 10 states have internal predecessors, (65), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 43 [2021-11-23 03:15:00,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:00,138 INFO L225 Difference]: With dead ends: 1145 [2021-11-23 03:15:00,138 INFO L226 Difference]: Without dead ends: 1145 [2021-11-23 03:15:00,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2021-11-23 03:15:00,140 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 1391 mSDsluCounter, 3785 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 4388 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:00,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1397 Valid, 4388 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 03:15:00,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2021-11-23 03:15:00,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 640. [2021-11-23 03:15:00,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 535 states have (on average 1.3271028037383177) internal successors, (710), 541 states have internal predecessors, (710), 73 states have call successors, (73), 28 states have call predecessors, (73), 31 states have return successors, (82), 70 states have call predecessors, (82), 67 states have call successors, (82) [2021-11-23 03:15:00,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 865 transitions. [2021-11-23 03:15:00,165 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 865 transitions. Word has length 43 [2021-11-23 03:15:00,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:00,166 INFO L470 AbstractCegarLoop]: Abstraction has 640 states and 865 transitions. [2021-11-23 03:15:00,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 10 states have internal predecessors, (65), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:15:00,166 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 865 transitions. [2021-11-23 03:15:00,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-23 03:15:00,168 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:00,168 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:00,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:00,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:00,380 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:00,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:00,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1615816211, now seen corresponding path program 1 times [2021-11-23 03:15:00,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:00,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761759146] [2021-11-23 03:15:00,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:00,382 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:00,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:00,383 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:00,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-23 03:15:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:00,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:15:00,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:00,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:00,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:00,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:00,653 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:00,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761759146] [2021-11-23 03:15:00,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761759146] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:00,654 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:00,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:15:00,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368901819] [2021-11-23 03:15:00,654 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:00,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:15:00,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:00,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:15:00,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:15:00,656 INFO L87 Difference]: Start difference. First operand 640 states and 865 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:15:00,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:00,709 INFO L93 Difference]: Finished difference Result 638 states and 861 transitions. [2021-11-23 03:15:00,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:15:00,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2021-11-23 03:15:00,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:00,714 INFO L225 Difference]: With dead ends: 638 [2021-11-23 03:15:00,714 INFO L226 Difference]: Without dead ends: 638 [2021-11-23 03:15:00,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:15:00,718 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 9 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:00,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1021 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:15:00,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-11-23 03:15:00,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 638. [2021-11-23 03:15:00,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 534 states have (on average 1.3239700374531835) internal successors, (707), 539 states have internal predecessors, (707), 72 states have call successors, (72), 28 states have call predecessors, (72), 31 states have return successors, (82), 70 states have call predecessors, (82), 67 states have call successors, (82) [2021-11-23 03:15:00,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 861 transitions. [2021-11-23 03:15:00,735 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 861 transitions. Word has length 45 [2021-11-23 03:15:00,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:00,735 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 861 transitions. [2021-11-23 03:15:00,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:15:00,736 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 861 transitions. [2021-11-23 03:15:00,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 03:15:00,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:00,738 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:00,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:00,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:00,951 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:00,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:00,951 INFO L85 PathProgramCache]: Analyzing trace with hash -938217641, now seen corresponding path program 1 times [2021-11-23 03:15:00,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:00,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307560634] [2021-11-23 03:15:00,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:00,952 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:00,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:00,953 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:00,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-23 03:15:01,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:01,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 03:15:01,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:01,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:01,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:01,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:01,580 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:01,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307560634] [2021-11-23 03:15:01,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307560634] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:01,580 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:01,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 9] imperfect sequences [] total 17 [2021-11-23 03:15:01,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517335788] [2021-11-23 03:15:01,581 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:01,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 03:15:01,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:01,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 03:15:01,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:15:01,582 INFO L87 Difference]: Start difference. First operand 638 states and 861 transitions. Second operand has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 13 states have internal predecessors, (57), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:15:02,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:02,050 INFO L93 Difference]: Finished difference Result 693 states and 924 transitions. [2021-11-23 03:15:02,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 03:15:02,051 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 13 states have internal predecessors, (57), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2021-11-23 03:15:02,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:02,054 INFO L225 Difference]: With dead ends: 693 [2021-11-23 03:15:02,054 INFO L226 Difference]: Without dead ends: 668 [2021-11-23 03:15:02,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-11-23 03:15:02,055 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 47 mSDsluCounter, 5563 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 6092 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:02,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 6092 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:15:02,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-11-23 03:15:02,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 639. [2021-11-23 03:15:02,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 536 states have (on average 1.3227611940298507) internal successors, (709), 541 states have internal predecessors, (709), 71 states have call successors, (71), 28 states have call predecessors, (71), 31 states have return successors, (81), 69 states have call predecessors, (81), 66 states have call successors, (81) [2021-11-23 03:15:02,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 861 transitions. [2021-11-23 03:15:02,083 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 861 transitions. Word has length 43 [2021-11-23 03:15:02,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:02,084 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 861 transitions. [2021-11-23 03:15:02,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.3529411764705883) internal successors, (57), 13 states have internal predecessors, (57), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:15:02,084 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 861 transitions. [2021-11-23 03:15:02,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-23 03:15:02,086 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:02,087 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:02,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:02,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:02,299 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:02,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:02,299 INFO L85 PathProgramCache]: Analyzing trace with hash 590562129, now seen corresponding path program 1 times [2021-11-23 03:15:02,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:02,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158453449] [2021-11-23 03:15:02,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:02,300 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:02,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:02,301 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:02,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-23 03:15:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:02,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 03:15:02,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:02,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:02,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:02,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:02,874 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:02,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158453449] [2021-11-23 03:15:02,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158453449] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:02,874 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:02,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-23 03:15:02,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107091355] [2021-11-23 03:15:02,875 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:02,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 03:15:02,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:02,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 03:15:02,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-23 03:15:02,877 INFO L87 Difference]: Start difference. First operand 639 states and 861 transitions. Second operand has 18 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:15:03,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:03,344 INFO L93 Difference]: Finished difference Result 695 states and 924 transitions. [2021-11-23 03:15:03,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 03:15:03,345 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 47 [2021-11-23 03:15:03,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:03,350 INFO L225 Difference]: With dead ends: 695 [2021-11-23 03:15:03,351 INFO L226 Difference]: Without dead ends: 678 [2021-11-23 03:15:03,352 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2021-11-23 03:15:03,353 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 111 mSDsluCounter, 7244 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 7782 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:03,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 7782 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:15:03,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2021-11-23 03:15:03,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 637. [2021-11-23 03:15:03,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 535 states have (on average 1.3214953271028038) internal successors, (707), 540 states have internal predecessors, (707), 70 states have call successors, (70), 28 states have call predecessors, (70), 31 states have return successors, (80), 68 states have call predecessors, (80), 65 states have call successors, (80) [2021-11-23 03:15:03,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 857 transitions. [2021-11-23 03:15:03,383 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 857 transitions. Word has length 47 [2021-11-23 03:15:03,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:03,384 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 857 transitions. [2021-11-23 03:15:03,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.9375) internal successors, (63), 16 states have internal predecessors, (63), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:15:03,385 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 857 transitions. [2021-11-23 03:15:03,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 03:15:03,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:03,387 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:03,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:03,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:03,602 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:03,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:03,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1771938136, now seen corresponding path program 1 times [2021-11-23 03:15:03,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:03,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357135930] [2021-11-23 03:15:03,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:03,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:03,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:03,604 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:03,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-23 03:15:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:03,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 03:15:03,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:03,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:03,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:04,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:04,186 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:04,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357135930] [2021-11-23 03:15:04,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357135930] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:04,186 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:04,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-23 03:15:04,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306324422] [2021-11-23 03:15:04,186 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:04,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 03:15:04,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:04,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 03:15:04,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-23 03:15:04,188 INFO L87 Difference]: Start difference. First operand 637 states and 857 transitions. Second operand has 18 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:15:04,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:04,724 INFO L93 Difference]: Finished difference Result 694 states and 921 transitions. [2021-11-23 03:15:04,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 03:15:04,724 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 44 [2021-11-23 03:15:04,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:04,728 INFO L225 Difference]: With dead ends: 694 [2021-11-23 03:15:04,728 INFO L226 Difference]: Without dead ends: 655 [2021-11-23 03:15:04,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=674, Unknown=0, NotChecked=0, Total=812 [2021-11-23 03:15:04,729 INFO L933 BasicCegarLoop]: 504 mSDtfsCounter, 179 mSDsluCounter, 5614 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 6118 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:04,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [186 Valid, 6118 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:15:04,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2021-11-23 03:15:04,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 637. [2021-11-23 03:15:04,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 535 states have (on average 1.291588785046729) internal successors, (691), 540 states have internal predecessors, (691), 70 states have call successors, (70), 28 states have call predecessors, (70), 31 states have return successors, (80), 68 states have call predecessors, (80), 65 states have call successors, (80) [2021-11-23 03:15:04,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 841 transitions. [2021-11-23 03:15:04,747 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 841 transitions. Word has length 44 [2021-11-23 03:15:04,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:04,747 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 841 transitions. [2021-11-23 03:15:04,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 3.75) internal successors, (60), 16 states have internal predecessors, (60), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:15:04,748 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 841 transitions. [2021-11-23 03:15:04,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-23 03:15:04,750 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:04,750 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:04,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:04,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:04,962 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:04,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:04,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1007838826, now seen corresponding path program 1 times [2021-11-23 03:15:04,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:04,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166668374] [2021-11-23 03:15:04,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:04,963 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:04,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:04,964 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:05,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-23 03:15:05,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:05,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 03:15:05,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:05,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:05,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:05,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:05,562 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:05,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166668374] [2021-11-23 03:15:05,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166668374] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:05,562 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:05,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 9] imperfect sequences [] total 17 [2021-11-23 03:15:05,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303982383] [2021-11-23 03:15:05,563 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:05,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 03:15:05,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:05,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 03:15:05,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:15:05,564 INFO L87 Difference]: Start difference. First operand 637 states and 841 transitions. Second operand has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 13 states have internal predecessors, (58), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:15:05,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:05,983 INFO L93 Difference]: Finished difference Result 688 states and 898 transitions. [2021-11-23 03:15:05,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 03:15:05,983 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 13 states have internal predecessors, (58), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2021-11-23 03:15:05,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:05,987 INFO L225 Difference]: With dead ends: 688 [2021-11-23 03:15:05,987 INFO L226 Difference]: Without dead ends: 663 [2021-11-23 03:15:05,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-11-23 03:15:05,988 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 47 mSDsluCounter, 5766 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 6266 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:05,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 6266 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:15:05,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-11-23 03:15:06,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 634. [2021-11-23 03:15:06,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 533 states have (on average 1.2908067542213884) internal successors, (688), 538 states have internal predecessors, (688), 69 states have call successors, (69), 28 states have call predecessors, (69), 31 states have return successors, (79), 67 states have call predecessors, (79), 64 states have call successors, (79) [2021-11-23 03:15:06,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 836 transitions. [2021-11-23 03:15:06,005 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 836 transitions. Word has length 44 [2021-11-23 03:15:06,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:06,005 INFO L470 AbstractCegarLoop]: Abstraction has 634 states and 836 transitions. [2021-11-23 03:15:06,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.411764705882353) internal successors, (58), 13 states have internal predecessors, (58), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:15:06,005 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 836 transitions. [2021-11-23 03:15:06,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-23 03:15:06,007 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:06,008 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:06,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:06,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:06,219 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:06,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:06,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1307777067, now seen corresponding path program 1 times [2021-11-23 03:15:06,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:06,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991928888] [2021-11-23 03:15:06,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:06,220 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:06,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:06,221 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:06,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-23 03:15:06,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:06,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:15:06,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:06,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:06,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:06,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:06,509 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:06,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991928888] [2021-11-23 03:15:06,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991928888] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:06,509 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:06,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-23 03:15:06,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250036328] [2021-11-23 03:15:06,509 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:06,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:15:06,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:06,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:15:06,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:15:06,510 INFO L87 Difference]: Start difference. First operand 634 states and 836 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 03:15:06,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:06,698 INFO L93 Difference]: Finished difference Result 661 states and 884 transitions. [2021-11-23 03:15:06,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:15:06,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 45 [2021-11-23 03:15:06,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:06,703 INFO L225 Difference]: With dead ends: 661 [2021-11-23 03:15:06,703 INFO L226 Difference]: Without dead ends: 661 [2021-11-23 03:15:06,704 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:15:06,704 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 20 mSDsluCounter, 1360 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1838 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:06,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 1838 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:15:06,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-11-23 03:15:06,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 641. [2021-11-23 03:15:06,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 538 states have (on average 1.29182156133829) internal successors, (695), 544 states have internal predecessors, (695), 70 states have call successors, (70), 28 states have call predecessors, (70), 32 states have return successors, (85), 68 states have call predecessors, (85), 65 states have call successors, (85) [2021-11-23 03:15:06,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 850 transitions. [2021-11-23 03:15:06,723 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 850 transitions. Word has length 45 [2021-11-23 03:15:06,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:06,723 INFO L470 AbstractCegarLoop]: Abstraction has 641 states and 850 transitions. [2021-11-23 03:15:06,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 03:15:06,723 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 850 transitions. [2021-11-23 03:15:06,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-23 03:15:06,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:06,726 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:06,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:06,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:06,938 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:06,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:06,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1817250157, now seen corresponding path program 1 times [2021-11-23 03:15:06,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:06,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778612910] [2021-11-23 03:15:06,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:06,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:06,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:06,940 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:06,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-23 03:15:07,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:07,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 03:15:07,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:07,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:07,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:07,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:07,402 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:07,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778612910] [2021-11-23 03:15:07,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778612910] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:07,402 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:07,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-11-23 03:15:07,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370399040] [2021-11-23 03:15:07,402 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:07,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 03:15:07,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:07,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 03:15:07,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:15:07,403 INFO L87 Difference]: Start difference. First operand 641 states and 850 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 14 states have internal predecessors, (59), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:15:07,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:07,677 INFO L93 Difference]: Finished difference Result 685 states and 913 transitions. [2021-11-23 03:15:07,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 03:15:07,678 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 14 states have internal predecessors, (59), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 45 [2021-11-23 03:15:07,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:07,682 INFO L225 Difference]: With dead ends: 685 [2021-11-23 03:15:07,682 INFO L226 Difference]: Without dead ends: 649 [2021-11-23 03:15:07,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=436, Unknown=0, NotChecked=0, Total=552 [2021-11-23 03:15:07,683 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 120 mSDsluCounter, 5884 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 6372 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:07,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 6372 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:15:07,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2021-11-23 03:15:07,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 645. [2021-11-23 03:15:07,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 540 states have (on average 1.288888888888889) internal successors, (696), 549 states have internal predecessors, (696), 69 states have call successors, (69), 28 states have call predecessors, (69), 35 states have return successors, (100), 67 states have call predecessors, (100), 64 states have call successors, (100) [2021-11-23 03:15:07,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 865 transitions. [2021-11-23 03:15:07,700 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 865 transitions. Word has length 45 [2021-11-23 03:15:07,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:07,701 INFO L470 AbstractCegarLoop]: Abstraction has 645 states and 865 transitions. [2021-11-23 03:15:07,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 14 states have internal predecessors, (59), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:15:07,701 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 865 transitions. [2021-11-23 03:15:07,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-23 03:15:07,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:07,707 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:07,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:07,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:07,918 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:07,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:07,919 INFO L85 PathProgramCache]: Analyzing trace with hash 877591917, now seen corresponding path program 1 times [2021-11-23 03:15:07,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:07,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287798363] [2021-11-23 03:15:07,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:07,920 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:07,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:07,921 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:07,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-23 03:15:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:08,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 03:15:08,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:08,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:08,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:08,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:08,528 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:08,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287798363] [2021-11-23 03:15:08,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287798363] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:08,528 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:08,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 19 [2021-11-23 03:15:08,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689211955] [2021-11-23 03:15:08,528 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:08,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-23 03:15:08,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:08,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-23 03:15:08,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2021-11-23 03:15:08,530 INFO L87 Difference]: Start difference. First operand 645 states and 865 transitions. Second operand has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 15 states have internal predecessors, (61), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:15:08,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:08,979 INFO L93 Difference]: Finished difference Result 699 states and 924 transitions. [2021-11-23 03:15:08,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 03:15:08,980 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 15 states have internal predecessors, (61), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 46 [2021-11-23 03:15:08,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:08,985 INFO L225 Difference]: With dead ends: 699 [2021-11-23 03:15:08,985 INFO L226 Difference]: Without dead ends: 671 [2021-11-23 03:15:08,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2021-11-23 03:15:08,986 INFO L933 BasicCegarLoop]: 490 mSDtfsCounter, 73 mSDsluCounter, 6634 mSDsCounter, 0 mSdLazyCounter, 350 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 7124 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:08,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 7124 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 350 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:15:08,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2021-11-23 03:15:09,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 642. [2021-11-23 03:15:09,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 538 states have (on average 1.2862453531598512) internal successors, (692), 547 states have internal predecessors, (692), 68 states have call successors, (68), 28 states have call predecessors, (68), 35 states have return successors, (99), 66 states have call predecessors, (99), 63 states have call successors, (99) [2021-11-23 03:15:09,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 859 transitions. [2021-11-23 03:15:09,006 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 859 transitions. Word has length 46 [2021-11-23 03:15:09,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:09,006 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 859 transitions. [2021-11-23 03:15:09,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.210526315789474) internal successors, (61), 15 states have internal predecessors, (61), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:15:09,007 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 859 transitions. [2021-11-23 03:15:09,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-23 03:15:09,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:09,010 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:09,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:09,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:09,222 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:09,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:09,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1741355878, now seen corresponding path program 1 times [2021-11-23 03:15:09,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:09,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1537333227] [2021-11-23 03:15:09,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:09,223 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:09,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:09,224 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:09,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-23 03:15:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:09,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 03:15:09,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:09,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:09,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:09,860 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:09,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1537333227] [2021-11-23 03:15:09,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1537333227] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:09,861 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:09,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 21 [2021-11-23 03:15:09,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435122959] [2021-11-23 03:15:09,861 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:09,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 03:15:09,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:09,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 03:15:09,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2021-11-23 03:15:09,862 INFO L87 Difference]: Start difference. First operand 642 states and 859 transitions. Second operand has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 17 states have internal predecessors, (64), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:15:10,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:10,451 INFO L93 Difference]: Finished difference Result 697 states and 918 transitions. [2021-11-23 03:15:10,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 03:15:10,452 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 17 states have internal predecessors, (64), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 48 [2021-11-23 03:15:10,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:10,455 INFO L225 Difference]: With dead ends: 697 [2021-11-23 03:15:10,455 INFO L226 Difference]: Without dead ends: 668 [2021-11-23 03:15:10,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2021-11-23 03:15:10,456 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 82 mSDsluCounter, 7124 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 7625 SdHoareTripleChecker+Invalid, 500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:10,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 7625 Invalid, 500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:15:10,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2021-11-23 03:15:10,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 639. [2021-11-23 03:15:10,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 536 states have (on average 1.2835820895522387) internal successors, (688), 545 states have internal predecessors, (688), 67 states have call successors, (67), 28 states have call predecessors, (67), 35 states have return successors, (98), 65 states have call predecessors, (98), 62 states have call successors, (98) [2021-11-23 03:15:10,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 853 transitions. [2021-11-23 03:15:10,473 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 853 transitions. Word has length 48 [2021-11-23 03:15:10,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:10,474 INFO L470 AbstractCegarLoop]: Abstraction has 639 states and 853 transitions. [2021-11-23 03:15:10,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0476190476190474) internal successors, (64), 17 states have internal predecessors, (64), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:15:10,474 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 853 transitions. [2021-11-23 03:15:10,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-23 03:15:10,477 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:10,477 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:10,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:10,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:10,689 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:10,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:10,689 INFO L85 PathProgramCache]: Analyzing trace with hash -201116362, now seen corresponding path program 1 times [2021-11-23 03:15:10,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:10,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055204218] [2021-11-23 03:15:10,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:10,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:10,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:10,690 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:10,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-23 03:15:10,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:10,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 03:15:10,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:11,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:11,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:11,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:11,360 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:11,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055204218] [2021-11-23 03:15:11,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055204218] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:11,360 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:11,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 21 [2021-11-23 03:15:11,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957723527] [2021-11-23 03:15:11,360 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:11,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 03:15:11,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:11,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 03:15:11,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2021-11-23 03:15:11,362 INFO L87 Difference]: Start difference. First operand 639 states and 853 transitions. Second operand has 21 states, 21 states have (on average 3.0) internal successors, (63), 17 states have internal predecessors, (63), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:15:11,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:11,751 INFO L93 Difference]: Finished difference Result 694 states and 911 transitions. [2021-11-23 03:15:11,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 03:15:11,752 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 17 states have internal predecessors, (63), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 47 [2021-11-23 03:15:11,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:11,756 INFO L225 Difference]: With dead ends: 694 [2021-11-23 03:15:11,756 INFO L226 Difference]: Without dead ends: 665 [2021-11-23 03:15:11,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2021-11-23 03:15:11,762 INFO L933 BasicCegarLoop]: 481 mSDtfsCounter, 107 mSDsluCounter, 6044 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 6525 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:11,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 6525 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:15:11,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2021-11-23 03:15:11,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 636. [2021-11-23 03:15:11,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 534 states have (on average 1.2827715355805243) internal successors, (685), 543 states have internal predecessors, (685), 66 states have call successors, (66), 28 states have call predecessors, (66), 35 states have return successors, (97), 64 states have call predecessors, (97), 61 states have call successors, (97) [2021-11-23 03:15:11,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 848 transitions. [2021-11-23 03:15:11,781 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 848 transitions. Word has length 47 [2021-11-23 03:15:11,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:11,781 INFO L470 AbstractCegarLoop]: Abstraction has 636 states and 848 transitions. [2021-11-23 03:15:11,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.0) internal successors, (63), 17 states have internal predecessors, (63), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:15:11,781 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 848 transitions. [2021-11-23 03:15:11,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-23 03:15:11,784 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:11,784 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:11,799 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:11,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:11,992 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:11,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:11,992 INFO L85 PathProgramCache]: Analyzing trace with hash -109408180, now seen corresponding path program 1 times [2021-11-23 03:15:11,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:11,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43328251] [2021-11-23 03:15:11,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:11,992 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:11,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:11,993 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:11,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-23 03:15:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:12,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:15:12,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:12,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:12,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:12,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:12,371 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:12,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43328251] [2021-11-23 03:15:12,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43328251] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:12,372 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:12,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-23 03:15:12,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702606417] [2021-11-23 03:15:12,372 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:12,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:15:12,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:12,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:15:12,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:15:12,374 INFO L87 Difference]: Start difference. First operand 636 states and 848 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:15:12,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:12,399 INFO L93 Difference]: Finished difference Result 629 states and 837 transitions. [2021-11-23 03:15:12,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:15:12,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 50 [2021-11-23 03:15:12,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:12,403 INFO L225 Difference]: With dead ends: 629 [2021-11-23 03:15:12,403 INFO L226 Difference]: Without dead ends: 629 [2021-11-23 03:15:12,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:15:12,404 INFO L933 BasicCegarLoop]: 488 mSDtfsCounter, 35 mSDsluCounter, 1909 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:12,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 2397 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:15:12,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2021-11-23 03:15:12,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 629. [2021-11-23 03:15:12,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 629 states, 527 states have (on average 1.2789373814041747) internal successors, (674), 536 states have internal predecessors, (674), 66 states have call successors, (66), 28 states have call predecessors, (66), 35 states have return successors, (97), 64 states have call predecessors, (97), 61 states have call successors, (97) [2021-11-23 03:15:12,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 837 transitions. [2021-11-23 03:15:12,420 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 837 transitions. Word has length 50 [2021-11-23 03:15:12,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:12,420 INFO L470 AbstractCegarLoop]: Abstraction has 629 states and 837 transitions. [2021-11-23 03:15:12,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:15:12,421 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 837 transitions. [2021-11-23 03:15:12,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 03:15:12,423 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:12,424 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:12,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:12,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:12,636 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:12,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:12,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1366311556, now seen corresponding path program 1 times [2021-11-23 03:15:12,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:12,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [295885751] [2021-11-23 03:15:12,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:12,637 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:12,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:12,638 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:12,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-23 03:15:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:12,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 03:15:12,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:12,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:12,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:13,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:13,173 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:13,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [295885751] [2021-11-23 03:15:13,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [295885751] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:13,173 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:13,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-23 03:15:13,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123081493] [2021-11-23 03:15:13,173 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:13,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 03:15:13,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:13,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 03:15:13,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-23 03:15:13,175 INFO L87 Difference]: Start difference. First operand 629 states and 837 transitions. Second operand has 18 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 03:15:13,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:13,451 INFO L93 Difference]: Finished difference Result 678 states and 889 transitions. [2021-11-23 03:15:13,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 03:15:13,451 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 52 [2021-11-23 03:15:13,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:13,455 INFO L225 Difference]: With dead ends: 678 [2021-11-23 03:15:13,455 INFO L226 Difference]: Without dead ends: 661 [2021-11-23 03:15:13,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2021-11-23 03:15:13,456 INFO L933 BasicCegarLoop]: 495 mSDtfsCounter, 102 mSDsluCounter, 5767 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 6262 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:13,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 6262 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:15:13,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-11-23 03:15:13,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 627. [2021-11-23 03:15:13,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 526 states have (on average 1.2775665399239544) internal successors, (672), 535 states have internal predecessors, (672), 65 states have call successors, (65), 28 states have call predecessors, (65), 35 states have return successors, (96), 63 states have call predecessors, (96), 60 states have call successors, (96) [2021-11-23 03:15:13,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 833 transitions. [2021-11-23 03:15:13,470 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 833 transitions. Word has length 52 [2021-11-23 03:15:13,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:13,470 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 833 transitions. [2021-11-23 03:15:13,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.125) internal successors, (66), 16 states have internal predecessors, (66), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 03:15:13,471 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 833 transitions. [2021-11-23 03:15:13,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-23 03:15:13,473 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:13,473 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:13,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:13,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:13,685 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:13,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:13,685 INFO L85 PathProgramCache]: Analyzing trace with hash 484610396, now seen corresponding path program 1 times [2021-11-23 03:15:13,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:13,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047977211] [2021-11-23 03:15:13,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:13,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:13,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:13,686 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:13,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-23 03:15:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:13,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 03:15:13,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:13,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:13,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:14,166 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:14,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047977211] [2021-11-23 03:15:14,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047977211] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:14,166 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:14,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-23 03:15:14,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080454413] [2021-11-23 03:15:14,167 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:14,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 03:15:14,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:14,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 03:15:14,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-23 03:15:14,168 INFO L87 Difference]: Start difference. First operand 627 states and 833 transitions. Second operand has 18 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:15:14,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:14,498 INFO L93 Difference]: Finished difference Result 660 states and 868 transitions. [2021-11-23 03:15:14,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 03:15:14,499 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 48 [2021-11-23 03:15:14,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:14,503 INFO L225 Difference]: With dead ends: 660 [2021-11-23 03:15:14,503 INFO L226 Difference]: Without dead ends: 643 [2021-11-23 03:15:14,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2021-11-23 03:15:14,504 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 100 mSDsluCounter, 6507 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 6969 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:14,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 6969 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:15:14,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-11-23 03:15:14,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 625. [2021-11-23 03:15:14,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 625 states, 525 states have (on average 1.276190476190476) internal successors, (670), 534 states have internal predecessors, (670), 64 states have call successors, (64), 28 states have call predecessors, (64), 35 states have return successors, (95), 62 states have call predecessors, (95), 59 states have call successors, (95) [2021-11-23 03:15:14,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 829 transitions. [2021-11-23 03:15:14,519 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 829 transitions. Word has length 48 [2021-11-23 03:15:14,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:14,520 INFO L470 AbstractCegarLoop]: Abstraction has 625 states and 829 transitions. [2021-11-23 03:15:14,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.0) internal successors, (64), 16 states have internal predecessors, (64), 5 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-23 03:15:14,520 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 829 transitions. [2021-11-23 03:15:14,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-23 03:15:14,524 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:14,524 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:14,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:14,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:14,735 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:14,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:14,736 INFO L85 PathProgramCache]: Analyzing trace with hash 2066330974, now seen corresponding path program 1 times [2021-11-23 03:15:14,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:14,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438155272] [2021-11-23 03:15:14,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:14,737 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:14,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:14,738 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:14,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-23 03:15:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:14,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:15:14,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:14,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:14,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:15,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:15,028 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:15,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438155272] [2021-11-23 03:15:15,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438155272] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:15,029 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:15,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:15:15,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899185095] [2021-11-23 03:15:15,029 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:15,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:15:15,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:15,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:15:15,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:15:15,031 INFO L87 Difference]: Start difference. First operand 625 states and 829 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 03:15:15,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:15,034 INFO L93 Difference]: Finished difference Result 592 states and 761 transitions. [2021-11-23 03:15:15,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:15:15,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 48 [2021-11-23 03:15:15,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:15,037 INFO L225 Difference]: With dead ends: 592 [2021-11-23 03:15:15,038 INFO L226 Difference]: Without dead ends: 589 [2021-11-23 03:15:15,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:15:15,039 INFO L933 BasicCegarLoop]: 453 mSDtfsCounter, 3 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:15,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 902 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:15:15,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2021-11-23 03:15:15,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 572. [2021-11-23 03:15:15,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 485 states have (on average 1.2618556701030927) internal successors, (612), 491 states have internal predecessors, (612), 56 states have call successors, (56), 26 states have call predecessors, (56), 30 states have return successors, (64), 54 states have call predecessors, (64), 51 states have call successors, (64) [2021-11-23 03:15:15,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 732 transitions. [2021-11-23 03:15:15,052 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 732 transitions. Word has length 48 [2021-11-23 03:15:15,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:15,052 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 732 transitions. [2021-11-23 03:15:15,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-11-23 03:15:15,053 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 732 transitions. [2021-11-23 03:15:15,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 03:15:15,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:15,055 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:15,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:15,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:15,267 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:15,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:15,268 INFO L85 PathProgramCache]: Analyzing trace with hash -642740247, now seen corresponding path program 1 times [2021-11-23 03:15:15,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:15,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346417006] [2021-11-23 03:15:15,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:15,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:15,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:15,270 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:15,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-23 03:15:15,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:15,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 03:15:15,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:15,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:15,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:15,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:15,763 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:15,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346417006] [2021-11-23 03:15:15,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346417006] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:15,763 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:15,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 18 [2021-11-23 03:15:15,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086257214] [2021-11-23 03:15:15,764 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:15,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-23 03:15:15,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:15,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-23 03:15:15,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-23 03:15:15,766 INFO L87 Difference]: Start difference. First operand 572 states and 732 transitions. Second operand has 18 states, 16 states have (on average 4.0625) internal successors, (65), 16 states have internal predecessors, (65), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 03:15:16,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:16,042 INFO L93 Difference]: Finished difference Result 605 states and 767 transitions. [2021-11-23 03:15:16,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 03:15:16,042 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.0625) internal successors, (65), 16 states have internal predecessors, (65), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 51 [2021-11-23 03:15:16,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:16,045 INFO L225 Difference]: With dead ends: 605 [2021-11-23 03:15:16,045 INFO L226 Difference]: Without dead ends: 588 [2021-11-23 03:15:16,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2021-11-23 03:15:16,046 INFO L933 BasicCegarLoop]: 440 mSDtfsCounter, 112 mSDsluCounter, 5291 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 5731 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:16,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 5731 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:15:16,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2021-11-23 03:15:16,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 570. [2021-11-23 03:15:16,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 484 states have (on average 1.2603305785123966) internal successors, (610), 490 states have internal predecessors, (610), 55 states have call successors, (55), 26 states have call predecessors, (55), 30 states have return successors, (63), 53 states have call predecessors, (63), 50 states have call successors, (63) [2021-11-23 03:15:16,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 728 transitions. [2021-11-23 03:15:16,058 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 728 transitions. Word has length 51 [2021-11-23 03:15:16,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:16,058 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 728 transitions. [2021-11-23 03:15:16,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.0625) internal successors, (65), 16 states have internal predecessors, (65), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 03:15:16,059 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 728 transitions. [2021-11-23 03:15:16,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-23 03:15:16,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:16,061 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:16,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:16,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:16,272 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:16,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:16,272 INFO L85 PathProgramCache]: Analyzing trace with hash 574205435, now seen corresponding path program 1 times [2021-11-23 03:15:16,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:16,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739095753] [2021-11-23 03:15:16,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:16,273 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:16,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:16,273 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:16,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-23 03:15:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:16,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:15:16,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:16,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:16,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:16,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:16,559 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:16,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739095753] [2021-11-23 03:15:16,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739095753] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:16,559 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:16,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 03:15:16,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557292239] [2021-11-23 03:15:16,560 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:16,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:15:16,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:16,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:15:16,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:15:16,561 INFO L87 Difference]: Start difference. First operand 570 states and 728 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 03:15:16,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:16,602 INFO L93 Difference]: Finished difference Result 564 states and 718 transitions. [2021-11-23 03:15:16,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:15:16,602 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2021-11-23 03:15:16,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:16,605 INFO L225 Difference]: With dead ends: 564 [2021-11-23 03:15:16,605 INFO L226 Difference]: Without dead ends: 564 [2021-11-23 03:15:16,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:15:16,606 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 8 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2153 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:16,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 2153 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:15:16,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2021-11-23 03:15:16,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2021-11-23 03:15:16,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 479 states have (on average 1.2567849686847599) internal successors, (602), 485 states have internal predecessors, (602), 54 states have call successors, (54), 26 states have call predecessors, (54), 30 states have return successors, (62), 52 states have call predecessors, (62), 49 states have call successors, (62) [2021-11-23 03:15:16,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 718 transitions. [2021-11-23 03:15:16,619 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 718 transitions. Word has length 50 [2021-11-23 03:15:16,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:16,620 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 718 transitions. [2021-11-23 03:15:16,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 03:15:16,620 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 718 transitions. [2021-11-23 03:15:16,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-23 03:15:16,622 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:16,622 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:16,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:16,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:16,834 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:16,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:16,834 INFO L85 PathProgramCache]: Analyzing trace with hash 210413107, now seen corresponding path program 1 times [2021-11-23 03:15:16,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:16,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [494048547] [2021-11-23 03:15:16,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:16,835 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:16,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:16,836 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:16,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-11-23 03:15:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:16,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:15:16,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:17,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:17,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:17,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:17,326 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:17,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [494048547] [2021-11-23 03:15:17,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [494048547] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:17,326 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:17,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 7 [2021-11-23 03:15:17,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930088066] [2021-11-23 03:15:17,327 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:17,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:15:17,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:17,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:15:17,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:15:17,328 INFO L87 Difference]: Start difference. First operand 564 states and 718 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (12), 4 states have call predecessors, (12), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-23 03:15:17,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:17,676 INFO L93 Difference]: Finished difference Result 574 states and 726 transitions. [2021-11-23 03:15:17,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:15:17,677 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (12), 4 states have call predecessors, (12), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 54 [2021-11-23 03:15:17,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:17,679 INFO L225 Difference]: With dead ends: 574 [2021-11-23 03:15:17,679 INFO L226 Difference]: Without dead ends: 574 [2021-11-23 03:15:17,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:15:17,680 INFO L933 BasicCegarLoop]: 435 mSDtfsCounter, 435 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:17,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [436 Valid, 1409 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:15:17,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2021-11-23 03:15:17,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 564. [2021-11-23 03:15:17,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 479 states have (on average 1.2526096033402923) internal successors, (600), 485 states have internal predecessors, (600), 54 states have call successors, (54), 26 states have call predecessors, (54), 30 states have return successors, (62), 52 states have call predecessors, (62), 49 states have call successors, (62) [2021-11-23 03:15:17,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 716 transitions. [2021-11-23 03:15:17,693 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 716 transitions. Word has length 54 [2021-11-23 03:15:17,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:17,693 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 716 transitions. [2021-11-23 03:15:17,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (12), 4 states have call predecessors, (12), 6 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-23 03:15:17,694 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 716 transitions. [2021-11-23 03:15:17,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-23 03:15:17,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:17,696 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:17,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-11-23 03:15:17,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:17,908 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:17,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:17,909 INFO L85 PathProgramCache]: Analyzing trace with hash 311699140, now seen corresponding path program 1 times [2021-11-23 03:15:17,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:17,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762353546] [2021-11-23 03:15:17,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:17,909 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:17,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:17,910 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:17,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-23 03:15:18,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:18,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:15:18,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:18,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:18,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:18,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:18,195 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:18,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762353546] [2021-11-23 03:15:18,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762353546] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:18,195 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:18,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 03:15:18,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661337562] [2021-11-23 03:15:18,195 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:18,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:15:18,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:18,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:15:18,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:15:18,196 INFO L87 Difference]: Start difference. First operand 564 states and 716 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 03:15:18,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:18,241 INFO L93 Difference]: Finished difference Result 564 states and 715 transitions. [2021-11-23 03:15:18,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:15:18,242 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 52 [2021-11-23 03:15:18,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:18,243 INFO L225 Difference]: With dead ends: 564 [2021-11-23 03:15:18,243 INFO L226 Difference]: Without dead ends: 559 [2021-11-23 03:15:18,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:15:18,244 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 3 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:18,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2156 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:15:18,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-11-23 03:15:18,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2021-11-23 03:15:18,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 475 states have (on average 1.2526315789473683) internal successors, (595), 481 states have internal predecessors, (595), 53 states have call successors, (53), 26 states have call predecessors, (53), 30 states have return successors, (61), 51 states have call predecessors, (61), 48 states have call successors, (61) [2021-11-23 03:15:18,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 709 transitions. [2021-11-23 03:15:18,256 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 709 transitions. Word has length 52 [2021-11-23 03:15:18,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:18,256 INFO L470 AbstractCegarLoop]: Abstraction has 559 states and 709 transitions. [2021-11-23 03:15:18,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 03:15:18,257 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 709 transitions. [2021-11-23 03:15:18,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-23 03:15:18,259 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:18,259 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:18,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:18,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:18,471 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:18,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:18,472 INFO L85 PathProgramCache]: Analyzing trace with hash 488856498, now seen corresponding path program 1 times [2021-11-23 03:15:18,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:18,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [150694552] [2021-11-23 03:15:18,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:18,473 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:18,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:18,474 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:18,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-11-23 03:15:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:18,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:15:18,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:18,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:18,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:18,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:18,874 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:18,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [150694552] [2021-11-23 03:15:18,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [150694552] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:18,874 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:18,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-23 03:15:18,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857800140] [2021-11-23 03:15:18,874 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:18,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 03:15:18,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:18,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 03:15:18,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:15:18,875 INFO L87 Difference]: Start difference. First operand 559 states and 709 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (10), 2 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-23 03:15:19,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:19,302 INFO L93 Difference]: Finished difference Result 559 states and 705 transitions. [2021-11-23 03:15:19,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:15:19,303 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (10), 2 states have call predecessors, (10), 4 states have call successors, (10) Word has length 69 [2021-11-23 03:15:19,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:19,305 INFO L225 Difference]: With dead ends: 559 [2021-11-23 03:15:19,305 INFO L226 Difference]: Without dead ends: 559 [2021-11-23 03:15:19,305 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:15:19,306 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 1140 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:19,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1151 Valid, 898 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 03:15:19,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-11-23 03:15:19,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2021-11-23 03:15:19,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 475 states have (on average 1.2442105263157894) internal successors, (591), 481 states have internal predecessors, (591), 53 states have call successors, (53), 26 states have call predecessors, (53), 30 states have return successors, (61), 51 states have call predecessors, (61), 48 states have call successors, (61) [2021-11-23 03:15:19,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 705 transitions. [2021-11-23 03:15:19,317 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 705 transitions. Word has length 69 [2021-11-23 03:15:19,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:19,317 INFO L470 AbstractCegarLoop]: Abstraction has 559 states and 705 transitions. [2021-11-23 03:15:19,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 7 states have internal predecessors, (88), 4 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (10), 2 states have call predecessors, (10), 4 states have call successors, (10) [2021-11-23 03:15:19,318 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 705 transitions. [2021-11-23 03:15:19,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-23 03:15:19,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:19,320 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:19,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:19,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:19,532 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:19,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:19,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1620180035, now seen corresponding path program 1 times [2021-11-23 03:15:19,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:19,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [919323252] [2021-11-23 03:15:19,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:19,533 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:19,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:19,533 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:19,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-11-23 03:15:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:19,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:15:19,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:19,799 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:19,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:19,907 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:19,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [919323252] [2021-11-23 03:15:19,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [919323252] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:19,908 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:19,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-23 03:15:19,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386980875] [2021-11-23 03:15:19,908 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:19,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:15:19,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:19,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:15:19,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:15:19,909 INFO L87 Difference]: Start difference. First operand 559 states and 705 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 03:15:19,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:19,934 INFO L93 Difference]: Finished difference Result 620 states and 781 transitions. [2021-11-23 03:15:19,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:15:19,934 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 70 [2021-11-23 03:15:19,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:19,936 INFO L225 Difference]: With dead ends: 620 [2021-11-23 03:15:19,937 INFO L226 Difference]: Without dead ends: 620 [2021-11-23 03:15:19,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:15:19,937 INFO L933 BasicCegarLoop]: 470 mSDtfsCounter, 101 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:19,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 864 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:15:19,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-11-23 03:15:19,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 595. [2021-11-23 03:15:19,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 506 states have (on average 1.2470355731225296) internal successors, (631), 512 states have internal predecessors, (631), 54 states have call successors, (54), 28 states have call predecessors, (54), 34 states have return successors, (65), 54 states have call predecessors, (65), 50 states have call successors, (65) [2021-11-23 03:15:19,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 750 transitions. [2021-11-23 03:15:19,948 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 750 transitions. Word has length 70 [2021-11-23 03:15:19,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:19,948 INFO L470 AbstractCegarLoop]: Abstraction has 595 states and 750 transitions. [2021-11-23 03:15:19,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 03:15:19,949 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 750 transitions. [2021-11-23 03:15:19,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-23 03:15:19,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:19,950 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:19,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:20,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:20,160 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:20,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:20,160 INFO L85 PathProgramCache]: Analyzing trace with hash 953754427, now seen corresponding path program 1 times [2021-11-23 03:15:20,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:20,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146842352] [2021-11-23 03:15:20,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:20,161 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:20,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:20,161 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:20,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-11-23 03:15:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:20,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:15:20,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:20,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:20,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:20,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:20,636 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:20,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146842352] [2021-11-23 03:15:20,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146842352] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:20,636 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:20,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 03:15:20,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184252686] [2021-11-23 03:15:20,636 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:20,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:15:20,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:20,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:15:20,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:15:20,638 INFO L87 Difference]: Start difference. First operand 595 states and 750 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:15:20,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:20,963 INFO L93 Difference]: Finished difference Result 603 states and 754 transitions. [2021-11-23 03:15:20,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:15:20,963 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 53 [2021-11-23 03:15:20,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:20,965 INFO L225 Difference]: With dead ends: 603 [2021-11-23 03:15:20,965 INFO L226 Difference]: Without dead ends: 603 [2021-11-23 03:15:20,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:15:20,966 INFO L933 BasicCegarLoop]: 422 mSDtfsCounter, 750 mSDsluCounter, 608 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:20,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [750 Valid, 1030 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:15:20,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2021-11-23 03:15:20,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 595. [2021-11-23 03:15:20,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 506 states have (on average 1.243083003952569) internal successors, (629), 512 states have internal predecessors, (629), 54 states have call successors, (54), 28 states have call predecessors, (54), 34 states have return successors, (65), 54 states have call predecessors, (65), 50 states have call successors, (65) [2021-11-23 03:15:20,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 748 transitions. [2021-11-23 03:15:20,975 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 748 transitions. Word has length 53 [2021-11-23 03:15:20,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:20,975 INFO L470 AbstractCegarLoop]: Abstraction has 595 states and 748 transitions. [2021-11-23 03:15:20,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 4 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:15:20,976 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 748 transitions. [2021-11-23 03:15:20,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 03:15:20,977 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:20,977 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:20,984 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2021-11-23 03:15:21,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:21,177 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:21,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:21,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1347488490, now seen corresponding path program 1 times [2021-11-23 03:15:21,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:21,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370762014] [2021-11-23 03:15:21,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:21,178 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:21,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:21,179 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:21,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-11-23 03:15:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:21,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 03:15:21,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:21,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:21,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:21,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:21,716 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:21,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370762014] [2021-11-23 03:15:21,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370762014] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:21,717 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:21,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-11-23 03:15:21,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735618617] [2021-11-23 03:15:21,717 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:21,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-23 03:15:21,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:21,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-23 03:15:21,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-11-23 03:15:21,719 INFO L87 Difference]: Start difference. First operand 595 states and 748 transitions. Second operand has 22 states, 20 states have (on average 3.55) internal successors, (71), 18 states have internal predecessors, (71), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-23 03:15:22,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:22,086 INFO L93 Difference]: Finished difference Result 630 states and 786 transitions. [2021-11-23 03:15:22,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 03:15:22,087 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.55) internal successors, (71), 18 states have internal predecessors, (71), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) Word has length 55 [2021-11-23 03:15:22,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:22,088 INFO L225 Difference]: With dead ends: 630 [2021-11-23 03:15:22,088 INFO L226 Difference]: Without dead ends: 610 [2021-11-23 03:15:22,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2021-11-23 03:15:22,089 INFO L933 BasicCegarLoop]: 449 mSDtfsCounter, 98 mSDsluCounter, 6961 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 7410 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:22,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 7410 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:15:22,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2021-11-23 03:15:22,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 592. [2021-11-23 03:15:22,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 504 states have (on average 1.242063492063492) internal successors, (626), 510 states have internal predecessors, (626), 53 states have call successors, (53), 28 states have call predecessors, (53), 34 states have return successors, (64), 53 states have call predecessors, (64), 49 states have call successors, (64) [2021-11-23 03:15:22,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 743 transitions. [2021-11-23 03:15:22,101 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 743 transitions. Word has length 55 [2021-11-23 03:15:22,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:22,103 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 743 transitions. [2021-11-23 03:15:22,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.55) internal successors, (71), 18 states have internal predecessors, (71), 6 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-23 03:15:22,104 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 743 transitions. [2021-11-23 03:15:22,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-23 03:15:22,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:22,106 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:22,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:22,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:22,317 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:22,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:22,317 INFO L85 PathProgramCache]: Analyzing trace with hash -495181895, now seen corresponding path program 1 times [2021-11-23 03:15:22,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:22,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [482916945] [2021-11-23 03:15:22,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:22,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:22,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:22,318 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:22,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-11-23 03:15:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:22,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 03:15:22,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:22,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:22,703 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:23,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:23,042 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:23,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [482916945] [2021-11-23 03:15:23,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [482916945] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:23,043 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:23,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 21 [2021-11-23 03:15:23,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644744572] [2021-11-23 03:15:23,043 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:23,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 03:15:23,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:23,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 03:15:23,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2021-11-23 03:15:23,044 INFO L87 Difference]: Start difference. First operand 592 states and 743 transitions. Second operand has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 17 states have internal predecessors, (70), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:15:23,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:23,396 INFO L93 Difference]: Finished difference Result 643 states and 796 transitions. [2021-11-23 03:15:23,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 03:15:23,396 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 17 states have internal predecessors, (70), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 54 [2021-11-23 03:15:23,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:23,398 INFO L225 Difference]: With dead ends: 643 [2021-11-23 03:15:23,398 INFO L226 Difference]: Without dead ends: 607 [2021-11-23 03:15:23,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2021-11-23 03:15:23,399 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 108 mSDsluCounter, 6103 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 6524 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:23,399 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 6524 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:15:23,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2021-11-23 03:15:23,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 582. [2021-11-23 03:15:23,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 496 states have (on average 1.2419354838709677) internal successors, (616), 502 states have internal predecessors, (616), 51 states have call successors, (51), 28 states have call predecessors, (51), 34 states have return successors, (62), 51 states have call predecessors, (62), 47 states have call successors, (62) [2021-11-23 03:15:23,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 729 transitions. [2021-11-23 03:15:23,410 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 729 transitions. Word has length 54 [2021-11-23 03:15:23,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:23,410 INFO L470 AbstractCegarLoop]: Abstraction has 582 states and 729 transitions. [2021-11-23 03:15:23,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.3333333333333335) internal successors, (70), 17 states have internal predecessors, (70), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:15:23,410 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 729 transitions. [2021-11-23 03:15:23,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-23 03:15:23,412 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:23,412 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:23,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2021-11-23 03:15:23,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:23,624 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:23,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:23,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1923058174, now seen corresponding path program 1 times [2021-11-23 03:15:23,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:23,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945389614] [2021-11-23 03:15:23,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:23,625 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:23,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:23,625 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:23,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-11-23 03:15:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:23,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:15:23,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:23,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:23,915 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:23,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945389614] [2021-11-23 03:15:23,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945389614] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:23,915 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:23,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 03:15:23,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437094457] [2021-11-23 03:15:23,916 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:23,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:15:23,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:23,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:15:23,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:15:23,916 INFO L87 Difference]: Start difference. First operand 582 states and 729 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 03:15:23,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:23,946 INFO L93 Difference]: Finished difference Result 582 states and 728 transitions. [2021-11-23 03:15:23,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:15:23,946 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2021-11-23 03:15:23,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:23,948 INFO L225 Difference]: With dead ends: 582 [2021-11-23 03:15:23,948 INFO L226 Difference]: Without dead ends: 577 [2021-11-23 03:15:23,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:15:23,949 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 3 mSDsluCounter, 2399 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2806 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:23,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2806 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:15:23,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2021-11-23 03:15:23,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 577. [2021-11-23 03:15:23,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 492 states have (on average 1.241869918699187) internal successors, (611), 498 states have internal predecessors, (611), 50 states have call successors, (50), 28 states have call predecessors, (50), 34 states have return successors, (61), 50 states have call predecessors, (61), 46 states have call successors, (61) [2021-11-23 03:15:23,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 722 transitions. [2021-11-23 03:15:23,959 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 722 transitions. Word has length 54 [2021-11-23 03:15:23,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:23,960 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 722 transitions. [2021-11-23 03:15:23,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 03:15:23,960 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 722 transitions. [2021-11-23 03:15:23,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-23 03:15:23,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:23,962 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:23,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:24,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:24,173 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:24,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:24,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1301879028, now seen corresponding path program 1 times [2021-11-23 03:15:24,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:24,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691541412] [2021-11-23 03:15:24,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:24,175 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:24,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:24,175 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:24,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-11-23 03:15:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:24,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:15:24,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:24,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:24,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:24,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:24,465 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:24,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691541412] [2021-11-23 03:15:24,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691541412] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:24,466 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:24,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-23 03:15:24,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306647124] [2021-11-23 03:15:24,466 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:24,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 03:15:24,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:24,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 03:15:24,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-23 03:15:24,466 INFO L87 Difference]: Start difference. First operand 577 states and 722 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 03:15:24,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:24,523 INFO L93 Difference]: Finished difference Result 611 states and 758 transitions. [2021-11-23 03:15:24,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:15:24,523 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2021-11-23 03:15:24,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:24,524 INFO L225 Difference]: With dead ends: 611 [2021-11-23 03:15:24,524 INFO L226 Difference]: Without dead ends: 611 [2021-11-23 03:15:24,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-23 03:15:24,525 INFO L933 BasicCegarLoop]: 432 mSDtfsCounter, 81 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:24,525 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 2504 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:15:24,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-11-23 03:15:24,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 575. [2021-11-23 03:15:24,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 490 states have (on average 1.2408163265306122) internal successors, (608), 496 states have internal predecessors, (608), 50 states have call successors, (50), 28 states have call predecessors, (50), 34 states have return successors, (61), 50 states have call predecessors, (61), 46 states have call successors, (61) [2021-11-23 03:15:24,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 719 transitions. [2021-11-23 03:15:24,533 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 719 transitions. Word has length 54 [2021-11-23 03:15:24,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:24,533 INFO L470 AbstractCegarLoop]: Abstraction has 575 states and 719 transitions. [2021-11-23 03:15:24,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 03:15:24,534 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 719 transitions. [2021-11-23 03:15:24,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-23 03:15:24,535 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:24,535 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:24,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2021-11-23 03:15:24,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:24,747 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:24,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:24,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1435892534, now seen corresponding path program 1 times [2021-11-23 03:15:24,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:24,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130894005] [2021-11-23 03:15:24,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:24,748 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:24,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:24,748 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:24,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-11-23 03:15:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:24,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 03:15:24,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:25,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:25,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:25,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:25,188 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:25,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130894005] [2021-11-23 03:15:25,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130894005] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:25,188 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:25,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-11-23 03:15:25,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147264674] [2021-11-23 03:15:25,189 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:25,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-23 03:15:25,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:25,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-23 03:15:25,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-23 03:15:25,190 INFO L87 Difference]: Start difference. First operand 575 states and 719 transitions. Second operand has 16 states, 16 states have (on average 4.375) internal successors, (70), 14 states have internal predecessors, (70), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:15:25,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:25,330 INFO L93 Difference]: Finished difference Result 595 states and 740 transitions. [2021-11-23 03:15:25,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 03:15:25,330 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 14 states have internal predecessors, (70), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 54 [2021-11-23 03:15:25,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:25,332 INFO L225 Difference]: With dead ends: 595 [2021-11-23 03:15:25,332 INFO L226 Difference]: Without dead ends: 572 [2021-11-23 03:15:25,332 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-11-23 03:15:25,335 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 92 mSDsluCounter, 3993 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 4407 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:25,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 4407 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:15:25,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-11-23 03:15:25,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2021-11-23 03:15:25,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 488 states have (on average 1.2397540983606556) internal successors, (605), 494 states have internal predecessors, (605), 49 states have call successors, (49), 28 states have call predecessors, (49), 34 states have return successors, (60), 49 states have call predecessors, (60), 45 states have call successors, (60) [2021-11-23 03:15:25,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 714 transitions. [2021-11-23 03:15:25,342 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 714 transitions. Word has length 54 [2021-11-23 03:15:25,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:25,343 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 714 transitions. [2021-11-23 03:15:25,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.375) internal successors, (70), 14 states have internal predecessors, (70), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-23 03:15:25,343 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 714 transitions. [2021-11-23 03:15:25,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-23 03:15:25,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:25,344 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:25,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:25,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:25,556 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:25,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:25,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1137798806, now seen corresponding path program 1 times [2021-11-23 03:15:25,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:25,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730975380] [2021-11-23 03:15:25,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:25,557 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:25,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:25,560 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:25,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-11-23 03:15:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:25,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 03:15:25,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:25,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:25,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:26,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:26,066 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:26,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730975380] [2021-11-23 03:15:26,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730975380] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:26,066 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:26,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 9] imperfect sequences [] total 17 [2021-11-23 03:15:26,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959527701] [2021-11-23 03:15:26,067 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:26,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 03:15:26,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:26,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 03:15:26,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-11-23 03:15:26,068 INFO L87 Difference]: Start difference. First operand 572 states and 714 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 15 states have internal predecessors, (67), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:15:26,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:26,350 INFO L93 Difference]: Finished difference Result 628 states and 772 transitions. [2021-11-23 03:15:26,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 03:15:26,351 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 15 states have internal predecessors, (67), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 54 [2021-11-23 03:15:26,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:26,352 INFO L225 Difference]: With dead ends: 628 [2021-11-23 03:15:26,352 INFO L226 Difference]: Without dead ends: 528 [2021-11-23 03:15:26,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2021-11-23 03:15:26,353 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 159 mSDsluCounter, 4880 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 5266 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:26,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 5266 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:15:26,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-11-23 03:15:26,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 522. [2021-11-23 03:15:26,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 442 states have (on average 1.2239819004524888) internal successors, (541), 447 states have internal predecessors, (541), 49 states have call successors, (49), 28 states have call predecessors, (49), 30 states have return successors, (56), 46 states have call predecessors, (56), 45 states have call successors, (56) [2021-11-23 03:15:26,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 646 transitions. [2021-11-23 03:15:26,360 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 646 transitions. Word has length 54 [2021-11-23 03:15:26,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:26,360 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 646 transitions. [2021-11-23 03:15:26,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 15 states have internal predecessors, (67), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-23 03:15:26,361 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 646 transitions. [2021-11-23 03:15:26,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 03:15:26,362 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:26,362 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:26,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:26,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:26,568 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:26,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:26,568 INFO L85 PathProgramCache]: Analyzing trace with hash 169253140, now seen corresponding path program 1 times [2021-11-23 03:15:26,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:26,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675006922] [2021-11-23 03:15:26,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:26,569 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:26,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:26,570 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:26,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-11-23 03:15:26,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:26,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:15:26,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:26,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:26,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:26,893 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:26,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675006922] [2021-11-23 03:15:26,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675006922] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:26,893 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:26,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 03:15:26,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41176692] [2021-11-23 03:15:26,894 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:26,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:15:26,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:26,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:15:26,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:15:26,895 INFO L87 Difference]: Start difference. First operand 522 states and 646 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 03:15:26,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:26,931 INFO L93 Difference]: Finished difference Result 540 states and 665 transitions. [2021-11-23 03:15:26,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:15:26,932 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2021-11-23 03:15:26,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:26,933 INFO L225 Difference]: With dead ends: 540 [2021-11-23 03:15:26,933 INFO L226 Difference]: Without dead ends: 533 [2021-11-23 03:15:26,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:15:26,934 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 20 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2408 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:26,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 2408 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:15:26,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2021-11-23 03:15:26,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 515. [2021-11-23 03:15:26,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 436 states have (on average 1.224770642201835) internal successors, (534), 441 states have internal predecessors, (534), 48 states have call successors, (48), 28 states have call predecessors, (48), 30 states have return successors, (54), 45 states have call predecessors, (54), 44 states have call successors, (54) [2021-11-23 03:15:26,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 636 transitions. [2021-11-23 03:15:26,949 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 636 transitions. Word has length 56 [2021-11-23 03:15:26,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:26,949 INFO L470 AbstractCegarLoop]: Abstraction has 515 states and 636 transitions. [2021-11-23 03:15:26,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 03:15:26,950 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 636 transitions. [2021-11-23 03:15:26,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 03:15:26,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:26,952 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:26,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:27,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:27,163 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:27,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:27,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1335081080, now seen corresponding path program 1 times [2021-11-23 03:15:27,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:27,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [386145249] [2021-11-23 03:15:27,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:27,164 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:27,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:27,165 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:27,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-11-23 03:15:27,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:27,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 03:15:27,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:27,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:27,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:27,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:27,802 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:27,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [386145249] [2021-11-23 03:15:27,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [386145249] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:27,803 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:27,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-11-23 03:15:27,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553461813] [2021-11-23 03:15:27,804 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:27,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-23 03:15:27,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:27,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-23 03:15:27,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-11-23 03:15:27,805 INFO L87 Difference]: Start difference. First operand 515 states and 636 transitions. Second operand has 22 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 18 states have internal predecessors, (74), 6 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-23 03:15:28,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:28,046 INFO L93 Difference]: Finished difference Result 548 states and 671 transitions. [2021-11-23 03:15:28,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 03:15:28,046 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 18 states have internal predecessors, (74), 6 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) Word has length 59 [2021-11-23 03:15:28,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:28,047 INFO L225 Difference]: With dead ends: 548 [2021-11-23 03:15:28,047 INFO L226 Difference]: Without dead ends: 523 [2021-11-23 03:15:28,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2021-11-23 03:15:28,048 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 128 mSDsluCounter, 5397 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 5786 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:28,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 5786 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:15:28,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2021-11-23 03:15:28,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 505. [2021-11-23 03:15:28,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 429 states have (on average 1.2261072261072261) internal successors, (526), 434 states have internal predecessors, (526), 45 states have call successors, (45), 28 states have call predecessors, (45), 30 states have return successors, (50), 42 states have call predecessors, (50), 41 states have call successors, (50) [2021-11-23 03:15:28,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 621 transitions. [2021-11-23 03:15:28,057 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 621 transitions. Word has length 59 [2021-11-23 03:15:28,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:28,058 INFO L470 AbstractCegarLoop]: Abstraction has 505 states and 621 transitions. [2021-11-23 03:15:28,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.3636363636363638) internal successors, (74), 18 states have internal predecessors, (74), 6 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-23 03:15:28,058 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 621 transitions. [2021-11-23 03:15:28,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-23 03:15:28,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:28,060 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:28,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:28,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:28,264 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:28,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:28,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1983153674, now seen corresponding path program 1 times [2021-11-23 03:15:28,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:28,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52402908] [2021-11-23 03:15:28,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:28,265 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:28,265 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:28,265 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:28,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-11-23 03:15:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:28,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:15:28,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:28,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:28,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:28,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:28,554 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:28,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52402908] [2021-11-23 03:15:28,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52402908] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:28,554 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:28,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 03:15:28,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024688932] [2021-11-23 03:15:28,555 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:28,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:15:28,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:28,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:15:28,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:15:28,556 INFO L87 Difference]: Start difference. First operand 505 states and 621 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 03:15:28,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:28,578 INFO L93 Difference]: Finished difference Result 523 states and 640 transitions. [2021-11-23 03:15:28,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:15:28,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2021-11-23 03:15:28,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:28,580 INFO L225 Difference]: With dead ends: 523 [2021-11-23 03:15:28,580 INFO L226 Difference]: Without dead ends: 517 [2021-11-23 03:15:28,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:15:28,580 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 19 mSDsluCounter, 1895 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2281 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:28,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 2281 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:15:28,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2021-11-23 03:15:28,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 499. [2021-11-23 03:15:28,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 424 states have (on average 1.2264150943396226) internal successors, (520), 429 states have internal predecessors, (520), 44 states have call successors, (44), 28 states have call predecessors, (44), 30 states have return successors, (49), 41 states have call predecessors, (49), 40 states have call successors, (49) [2021-11-23 03:15:28,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 613 transitions. [2021-11-23 03:15:28,587 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 613 transitions. Word has length 56 [2021-11-23 03:15:28,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:28,587 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 613 transitions. [2021-11-23 03:15:28,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 03:15:28,588 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 613 transitions. [2021-11-23 03:15:28,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 03:15:28,589 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:28,589 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:28,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2021-11-23 03:15:28,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:28,801 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:28,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:28,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1622755266, now seen corresponding path program 1 times [2021-11-23 03:15:28,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:28,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [710470911] [2021-11-23 03:15:28,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:28,807 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:28,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:28,808 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:28,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-11-23 03:15:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:28,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:15:28,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:28,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:28,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:29,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:29,078 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:29,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [710470911] [2021-11-23 03:15:29,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [710470911] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:29,078 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:29,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-23 03:15:29,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460363906] [2021-11-23 03:15:29,079 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:29,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:15:29,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:29,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:15:29,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:15:29,080 INFO L87 Difference]: Start difference. First operand 499 states and 613 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-23 03:15:29,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:29,088 INFO L93 Difference]: Finished difference Result 499 states and 611 transitions. [2021-11-23 03:15:29,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:15:29,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 59 [2021-11-23 03:15:29,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:29,089 INFO L225 Difference]: With dead ends: 499 [2021-11-23 03:15:29,089 INFO L226 Difference]: Without dead ends: 499 [2021-11-23 03:15:29,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:15:29,090 INFO L933 BasicCegarLoop]: 362 mSDtfsCounter, 1 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:29,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1076 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:15:29,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2021-11-23 03:15:29,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2021-11-23 03:15:29,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 424 states have (on average 1.221698113207547) internal successors, (518), 429 states have internal predecessors, (518), 44 states have call successors, (44), 28 states have call predecessors, (44), 30 states have return successors, (49), 41 states have call predecessors, (49), 40 states have call successors, (49) [2021-11-23 03:15:29,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 611 transitions. [2021-11-23 03:15:29,097 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 611 transitions. Word has length 59 [2021-11-23 03:15:29,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:29,097 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 611 transitions. [2021-11-23 03:15:29,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-23 03:15:29,097 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 611 transitions. [2021-11-23 03:15:29,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-23 03:15:29,098 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:29,099 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:29,110 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2021-11-23 03:15:29,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:29,310 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:29,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:29,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1080746315, now seen corresponding path program 1 times [2021-11-23 03:15:29,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:29,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752227520] [2021-11-23 03:15:29,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:29,311 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:29,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:29,312 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:29,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-11-23 03:15:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:29,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 03:15:29,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:29,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:29,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:29,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:29,900 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:29,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752227520] [2021-11-23 03:15:29,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752227520] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:29,900 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:29,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-11-23 03:15:29,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912837857] [2021-11-23 03:15:29,900 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:29,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-23 03:15:29,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:29,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-23 03:15:29,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2021-11-23 03:15:29,901 INFO L87 Difference]: Start difference. First operand 499 states and 611 transitions. Second operand has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 18 states have internal predecessors, (79), 6 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-23 03:15:30,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:30,119 INFO L93 Difference]: Finished difference Result 508 states and 616 transitions. [2021-11-23 03:15:30,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 03:15:30,119 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 18 states have internal predecessors, (79), 6 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) Word has length 62 [2021-11-23 03:15:30,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:30,120 INFO L225 Difference]: With dead ends: 508 [2021-11-23 03:15:30,120 INFO L226 Difference]: Without dead ends: 481 [2021-11-23 03:15:30,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=651, Unknown=0, NotChecked=0, Total=756 [2021-11-23 03:15:30,121 INFO L933 BasicCegarLoop]: 358 mSDtfsCounter, 104 mSDsluCounter, 5226 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 5584 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:30,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 5584 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 03:15:30,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2021-11-23 03:15:30,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2021-11-23 03:15:30,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 409 states have (on average 1.21760391198044) internal successors, (498), 414 states have internal predecessors, (498), 41 states have call successors, (41), 28 states have call predecessors, (41), 30 states have return successors, (45), 38 states have call predecessors, (45), 37 states have call successors, (45) [2021-11-23 03:15:30,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 584 transitions. [2021-11-23 03:15:30,127 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 584 transitions. Word has length 62 [2021-11-23 03:15:30,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:30,127 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 584 transitions. [2021-11-23 03:15:30,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.590909090909091) internal successors, (79), 18 states have internal predecessors, (79), 6 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 5 states have call successors, (7) [2021-11-23 03:15:30,127 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 584 transitions. [2021-11-23 03:15:30,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-23 03:15:30,128 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:30,128 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:30,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2021-11-23 03:15:30,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:30,329 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:30,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:30,329 INFO L85 PathProgramCache]: Analyzing trace with hash -353317419, now seen corresponding path program 1 times [2021-11-23 03:15:30,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:30,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963398568] [2021-11-23 03:15:30,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:30,330 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:30,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:30,331 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:30,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-11-23 03:15:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:30,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:15:30,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:30,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:30,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:30,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:30,651 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:30,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963398568] [2021-11-23 03:15:30,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963398568] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:30,652 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:30,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 03:15:30,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401473596] [2021-11-23 03:15:30,652 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:30,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:15:30,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:30,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:15:30,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:15:30,653 INFO L87 Difference]: Start difference. First operand 481 states and 584 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 03:15:30,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:30,664 INFO L93 Difference]: Finished difference Result 470 states and 569 transitions. [2021-11-23 03:15:30,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:15:30,665 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 58 [2021-11-23 03:15:30,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:30,666 INFO L225 Difference]: With dead ends: 470 [2021-11-23 03:15:30,666 INFO L226 Difference]: Without dead ends: 456 [2021-11-23 03:15:30,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:15:30,667 INFO L933 BasicCegarLoop]: 323 mSDtfsCounter, 0 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:30,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2251 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:15:30,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2021-11-23 03:15:30,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 456. [2021-11-23 03:15:30,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 388 states have (on average 1.211340206185567) internal successors, (470), 393 states have internal predecessors, (470), 38 states have call successors, (38), 27 states have call predecessors, (38), 29 states have return successors, (42), 35 states have call predecessors, (42), 34 states have call successors, (42) [2021-11-23 03:15:30,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 550 transitions. [2021-11-23 03:15:30,673 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 550 transitions. Word has length 58 [2021-11-23 03:15:30,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:30,673 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 550 transitions. [2021-11-23 03:15:30,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-23 03:15:30,673 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 550 transitions. [2021-11-23 03:15:30,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-23 03:15:30,674 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:30,674 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:30,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2021-11-23 03:15:30,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:30,875 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:30,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:30,875 INFO L85 PathProgramCache]: Analyzing trace with hash -470261491, now seen corresponding path program 1 times [2021-11-23 03:15:30,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:30,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459218365] [2021-11-23 03:15:30,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:30,876 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:30,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:30,877 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:30,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-11-23 03:15:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:31,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 03:15:31,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:31,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:31,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:31,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:31,544 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:31,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459218365] [2021-11-23 03:15:31,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1459218365] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:31,544 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:31,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 21 [2021-11-23 03:15:31,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571296856] [2021-11-23 03:15:31,545 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:31,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 03:15:31,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:31,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 03:15:31,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2021-11-23 03:15:31,546 INFO L87 Difference]: Start difference. First operand 456 states and 550 transitions. Second operand has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 17 states have internal predecessors, (78), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-23 03:15:31,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:31,989 INFO L93 Difference]: Finished difference Result 492 states and 587 transitions. [2021-11-23 03:15:31,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 03:15:31,989 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 17 states have internal predecessors, (78), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 64 [2021-11-23 03:15:31,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:31,990 INFO L225 Difference]: With dead ends: 492 [2021-11-23 03:15:31,990 INFO L226 Difference]: Without dead ends: 448 [2021-11-23 03:15:31,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2021-11-23 03:15:31,991 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 85 mSDsluCounter, 4485 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 4805 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:31,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 4805 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 03:15:31,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-11-23 03:15:31,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 439. [2021-11-23 03:15:31,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 375 states have (on average 1.2) internal successors, (450), 380 states have internal predecessors, (450), 35 states have call successors, (35), 26 states have call predecessors, (35), 28 states have return successors, (39), 32 states have call predecessors, (39), 31 states have call successors, (39) [2021-11-23 03:15:31,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 524 transitions. [2021-11-23 03:15:31,998 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 524 transitions. Word has length 64 [2021-11-23 03:15:31,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:31,998 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 524 transitions. [2021-11-23 03:15:31,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.7142857142857144) internal successors, (78), 17 states have internal predecessors, (78), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2021-11-23 03:15:31,998 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 524 transitions. [2021-11-23 03:15:31,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-23 03:15:31,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:31,999 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:32,012 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:32,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:32,212 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:32,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:32,212 INFO L85 PathProgramCache]: Analyzing trace with hash 908630671, now seen corresponding path program 1 times [2021-11-23 03:15:32,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:32,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258443945] [2021-11-23 03:15:32,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:32,212 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:32,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:32,213 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:32,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-11-23 03:15:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:32,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 03:15:32,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:32,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:32,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:32,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:32,833 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:32,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258443945] [2021-11-23 03:15:32,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258443945] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:32,833 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:32,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 11] imperfect sequences [] total 21 [2021-11-23 03:15:32,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974601461] [2021-11-23 03:15:32,833 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:32,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-23 03:15:32,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:32,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-23 03:15:32,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2021-11-23 03:15:32,835 INFO L87 Difference]: Start difference. First operand 439 states and 524 transitions. Second operand has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 17 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:15:33,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:33,132 INFO L93 Difference]: Finished difference Result 461 states and 545 transitions. [2021-11-23 03:15:33,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-23 03:15:33,133 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 17 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 57 [2021-11-23 03:15:33,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:33,134 INFO L225 Difference]: With dead ends: 461 [2021-11-23 03:15:33,135 INFO L226 Difference]: Without dead ends: 397 [2021-11-23 03:15:33,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2021-11-23 03:15:33,135 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 112 mSDsluCounter, 3425 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 3699 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:33,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 3699 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 03:15:33,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-11-23 03:15:33,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2021-11-23 03:15:33,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 338 states have (on average 1.2071005917159763) internal successors, (408), 342 states have internal predecessors, (408), 32 states have call successors, (32), 24 states have call predecessors, (32), 26 states have return successors, (37), 30 states have call predecessors, (37), 29 states have call successors, (37) [2021-11-23 03:15:33,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 477 transitions. [2021-11-23 03:15:33,142 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 477 transitions. Word has length 57 [2021-11-23 03:15:33,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:33,143 INFO L470 AbstractCegarLoop]: Abstraction has 397 states and 477 transitions. [2021-11-23 03:15:33,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.4761904761904763) internal successors, (73), 17 states have internal predecessors, (73), 2 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:15:33,143 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 477 transitions. [2021-11-23 03:15:33,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-23 03:15:33,144 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:33,144 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:33,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:33,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:33,356 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:33,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:33,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1455820089, now seen corresponding path program 1 times [2021-11-23 03:15:33,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:33,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821759093] [2021-11-23 03:15:33,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:33,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:33,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:33,358 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:33,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-11-23 03:15:33,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:15:33,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-23 03:15:33,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:15:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:33,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:15:33,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 03:15:33,679 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-23 03:15:33,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1821759093] [2021-11-23 03:15:33,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1821759093] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 03:15:33,679 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:15:33,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-23 03:15:33,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253903670] [2021-11-23 03:15:33,679 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 03:15:33,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:15:33,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-23 03:15:33,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:15:33,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:15:33,680 INFO L87 Difference]: Start difference. First operand 397 states and 477 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 03:15:33,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:15:33,704 INFO L93 Difference]: Finished difference Result 395 states and 473 transitions. [2021-11-23 03:15:33,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 03:15:33,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2021-11-23 03:15:33,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:15:33,705 INFO L225 Difference]: With dead ends: 395 [2021-11-23 03:15:33,705 INFO L226 Difference]: Without dead ends: 387 [2021-11-23 03:15:33,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:15:33,706 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 3 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1477 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:15:33,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1477 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 03:15:33,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-11-23 03:15:33,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2021-11-23 03:15:33,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 329 states have (on average 1.2066869300911853) internal successors, (397), 333 states have internal predecessors, (397), 31 states have call successors, (31), 24 states have call predecessors, (31), 26 states have return successors, (35), 29 states have call predecessors, (35), 28 states have call successors, (35) [2021-11-23 03:15:33,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 463 transitions. [2021-11-23 03:15:33,710 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 463 transitions. Word has length 58 [2021-11-23 03:15:33,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:15:33,710 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 463 transitions. [2021-11-23 03:15:33,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 6 states have internal predecessors, (60), 2 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-23 03:15:33,711 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 463 transitions. [2021-11-23 03:15:33,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-23 03:15:33,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:15:33,712 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:33,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2021-11-23 03:15:33,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:33,916 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-11-23 03:15:33,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:15:33,916 INFO L85 PathProgramCache]: Analyzing trace with hash -2090035410, now seen corresponding path program 1 times [2021-11-23 03:15:33,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-23 03:15:33,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329216260] [2021-11-23 03:15:33,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:15:33,917 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 03:15:33,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat [2021-11-23 03:15:33,917 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 03:15:33,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-11-23 03:15:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:15:34,025 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 03:15:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 03:15:34,155 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-23 03:15:34,155 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 03:15:34,156 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-11-23 03:15:34,158 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-11-23 03:15:34,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-11-23 03:15:34,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/mathsat -unsat_core_generation=3 [2021-11-23 03:15:34,372 INFO L732 BasicCegarLoop]: Path program 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:15:34,374 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:15:34,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:15:34 BoogieIcfgContainer [2021-11-23 03:15:34,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:15:34,516 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:15:34,516 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:15:34,516 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:15:34,517 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:14:41" (3/4) ... [2021-11-23 03:15:34,520 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 03:15:34,520 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:15:34,520 INFO L158 Benchmark]: Toolchain (without parser) took 55442.05ms. Allocated memory was 58.7MB in the beginning and 146.8MB in the end (delta: 88.1MB). Free memory was 35.9MB in the beginning and 104.6MB in the end (delta: -68.8MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2021-11-23 03:15:34,520 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 58.7MB. Free memory is still 39.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:15:34,528 INFO L158 Benchmark]: CACSL2BoogieTranslator took 818.22ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 35.7MB in the beginning and 53.0MB in the end (delta: -17.2MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2021-11-23 03:15:34,528 INFO L158 Benchmark]: Boogie Procedure Inliner took 137.94ms. Allocated memory is still 73.4MB. Free memory was 52.7MB in the beginning and 46.8MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-23 03:15:34,528 INFO L158 Benchmark]: Boogie Preprocessor took 92.42ms. Allocated memory is still 73.4MB. Free memory was 46.5MB in the beginning and 41.7MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 03:15:34,529 INFO L158 Benchmark]: RCFGBuilder took 1758.56ms. Allocated memory is still 73.4MB. Free memory was 41.7MB in the beginning and 33.3MB in the end (delta: 8.4MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2021-11-23 03:15:34,529 INFO L158 Benchmark]: TraceAbstraction took 52622.00ms. Allocated memory was 73.4MB in the beginning and 146.8MB in the end (delta: 73.4MB). Free memory was 33.0MB in the beginning and 104.6MB in the end (delta: -71.7MB). Peak memory consumption was 78.4MB. Max. memory is 16.1GB. [2021-11-23 03:15:34,530 INFO L158 Benchmark]: Witness Printer took 4.01ms. Allocated memory is still 146.8MB. Free memory is still 104.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:15:34,530 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 58.7MB. Free memory is still 39.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 818.22ms. Allocated memory was 58.7MB in the beginning and 73.4MB in the end (delta: 14.7MB). Free memory was 35.7MB in the beginning and 53.0MB in the end (delta: -17.2MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 137.94ms. Allocated memory is still 73.4MB. Free memory was 52.7MB in the beginning and 46.8MB in the end (delta: 5.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 92.42ms. Allocated memory is still 73.4MB. Free memory was 46.5MB in the beginning and 41.7MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1758.56ms. Allocated memory is still 73.4MB. Free memory was 41.7MB in the beginning and 33.3MB in the end (delta: 8.4MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * TraceAbstraction took 52622.00ms. Allocated memory was 73.4MB in the beginning and 146.8MB in the end (delta: 73.4MB). Free memory was 33.0MB in the beginning and 104.6MB in the end (delta: -71.7MB). Peak memory consumption was 78.4MB. Max. memory is 16.1GB. * Witness Printer took 4.01ms. Allocated memory is still 146.8MB. Free memory is still 104.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 59]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 59. Possible FailurePath: [L32] int s ; [L33] int UNLOADED ; [L34] int NP ; [L35] int DC ; [L36] int SKIP1 ; [L37] int SKIP2 ; [L38] int MPR1 ; [L39] int MPR3 ; [L40] int IPC ; [L41] int pended ; [L42] int compFptr ; [L43] int compRegistered ; [L44] int lowerDriverReturn ; [L45] int setEventCalled ; [L46] int customIrp ; [L47] int routine ; [L48] int myStatus ; [L49] int pirp ; [L50] int Executive ; [L51] int Suspended ; [L52] int KernelMode ; [L53] int DeviceUsageTypePaging ; VAL [compFptr=0, compRegistered=0, customIrp=0, DC=0, DeviceUsageTypePaging=0, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, pirp=0, routine=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, Suspended=0, UNLOADED=0] [L1718] int pirp__IoStatus__Status ; [L1719] int d = __VERIFIER_nondet_int() ; [L1720] int status = __VERIFIER_nondet_int() ; [L1721] int irp = __VERIFIER_nondet_int() ; [L1722] int we_should_unload = __VERIFIER_nondet_int() ; [L1723] int irp_choice = __VERIFIER_nondet_int() ; [L1724] int devobj = __VERIFIER_nondet_int() ; [L1725] int __cil_tmp9 ; [L1730] s = 0 [L1731] UNLOADED = 0 [L1732] NP = 0 [L1733] DC = 0 [L1734] SKIP1 = 0 [L1735] SKIP2 = 0 [L1736] MPR1 = 0 [L1737] MPR3 = 0 [L1738] IPC = 0 [L1739] pended = 0 [L1740] compFptr = 0 [L1741] compRegistered = 0 [L1742] lowerDriverReturn = 0 [L1743] setEventCalled = 0 [L1744] customIrp = 0 [L1745] routine = 0 [L1746] myStatus = 0 [L1747] pirp = 0 [L1748] Executive = 0 [L1749] Suspended = 5 [L1750] KernelMode = 0 [L1751] DeviceUsageTypePaging = 1 [L1754] pirp = irp [L1755] CALL _BLAST_init() [L67] UNLOADED = 0 [L68] NP = 1 [L69] DC = 2 [L70] SKIP1 = 3 [L71] SKIP2 = 4 [L72] MPR1 = 5 [L73] MPR3 = 6 [L74] IPC = 7 [L75] s = UNLOADED [L76] pended = 0 [L77] compFptr = 0 [L78] compRegistered = 0 [L79] lowerDriverReturn = 0 [L80] setEventCalled = 0 [L81] customIrp = 0 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=9, routine=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1755] RET _BLAST_init() [L1757] COND TRUE status >= 0 [L1758] s = NP [L1759] customIrp = 0 [L1760] setEventCalled = customIrp [L1761] lowerDriverReturn = setEventCalled [L1762] compRegistered = lowerDriverReturn [L1763] compFptr = compRegistered [L1764] pended = compFptr [L1765] pirp__IoStatus__Status = 0 [L1766] myStatus = 0 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, pirp=9, pirp__IoStatus__Status=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0] [L1767] COND TRUE irp_choice == 0 [L1768] pirp__IoStatus__Status = -1073741637 [L1769] myStatus = -1073741637 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0] [L1772] CALL stub_driver_init() [L1707] s = NP [L1708] customIrp = 0 [L1709] setEventCalled = customIrp [L1710] lowerDriverReturn = setEventCalled [L1711] compRegistered = lowerDriverReturn [L1712] compFptr = compRegistered [L1713] pended = compFptr VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1772] RET stub_driver_init() [L1775] COND FALSE !(status < 0) [L1779] int tmp_ndt_1; [L1780] tmp_ndt_1 = __VERIFIER_nondet_int() [L1781] COND TRUE tmp_ndt_1 == 2 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0] [L1798] CALL, EXPR CdAudioDeviceControl(devobj, pirp) [L313] int deviceExtension__Active = __VERIFIER_nondet_int() ; [L314] int status ; VAL [\old(DeviceObject)=8, \old(Irp)=9, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L317] COND FALSE !(deviceExtension__Active == 2) VAL [\old(DeviceObject)=8, \old(Irp)=9, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L320] COND FALSE !(deviceExtension__Active == 3) VAL [\old(DeviceObject)=8, \old(Irp)=9, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L323] COND FALSE !(deviceExtension__Active == 1) VAL [\old(DeviceObject)=8, \old(Irp)=9, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L326] COND TRUE deviceExtension__Active == 7 VAL [\old(DeviceObject)=8, \old(Irp)=9, compFptr=0, compRegistered=0, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L348] CALL, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L1591] int currentIrpStack__Parameters__DeviceIoControl__IoControlCode = __VERIFIER_nondet_int() ; [L1592] int deviceExtension__TargetDeviceObject = __VERIFIER_nondet_int() ; [L1593] int irpSp__Control ; [L1594] int tmp ; [L1595] int tmp___0 ; [L1596] int __cil_tmp8 ; [L1597] int __cil_tmp9 ; [L1598] int __cil_tmp10 ; [L1599] int __cil_tmp11 ; [L1600] int __cil_tmp12 ; [L1604] __cil_tmp8 = 56 [L1605] __cil_tmp9 = 16384 [L1606] __cil_tmp10 = 131072 [L1607] __cil_tmp11 = 147456 [L1608] __cil_tmp12 = 147512 VAL [\old(DeviceObject)=8, \old(Irp)=9, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, customIrp=0, DC=2, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1609] COND TRUE currentIrpStack__Parameters__DeviceIoControl__IoControlCode == __cil_tmp12 VAL [\old(DeviceObject)=8, \old(Irp)=9, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1610] COND FALSE !(s != NP) VAL [\old(DeviceObject)=8, \old(Irp)=9, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=0, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1615] COND FALSE !(compRegistered != 0) [L1620] compRegistered = 1 [L1621] routine = 0 VAL [\old(DeviceObject)=8, \old(Irp)=9, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1625] irpSp__Control = 224 VAL [\old(DeviceObject)=8, \old(Irp)=9, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] CALL, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1900] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1901] int returnVal2 ; [L1902] int compRetStatus ; [L1903] int lcontext = __VERIFIER_nondet_int() ; [L1904] unsigned long __cil_tmp8 ; VAL [\old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__PendingReturned=0, KernelMode=0, lcontext=11, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1907] COND TRUE \read(compRegistered) VAL [\old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__PendingReturned=0, KernelMode=0, lcontext=11, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1908] COND TRUE routine == 0 VAL [\old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__PendingReturned=0, KernelMode=0, lcontext=11, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] CALL, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(Context)=11, \old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1569] int Irp__PendingReturned = __VERIFIER_nondet_int() ; [L1570] int Irp__AssociatedIrp__SystemBuffer = __VERIFIER_nondet_int() ; [L1573] COND TRUE \read(Irp__PendingReturned) VAL [\old(Context)=11, \old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, Context=11, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__AssociatedIrp__SystemBuffer=13, Irp__PendingReturned=2147483648, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1574] COND TRUE pended == 0 [L1575] pended = 1 VAL [\old(Context)=11, \old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, Context=11, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__AssociatedIrp__SystemBuffer=13, Irp__PendingReturned=2147483648, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1582] COND FALSE !(myStatus >= 0) VAL [\old(Context)=11, \old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, Context=11, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__AssociatedIrp__SystemBuffer=13, Irp__PendingReturned=2147483648, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1587] return (myStatus); VAL [\old(Context)=11, \old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \result=-1073741637, compFptr=0, compRegistered=1, Context=11, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__AssociatedIrp__SystemBuffer=13, Irp__PendingReturned=2147483648, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] RET, EXPR HPCdrCompletion(DeviceObject, Irp, lcontext) VAL [\old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, HPCdrCompletion(DeviceObject, Irp, lcontext)=-1073741637, IPC=7, Irp=9, Irp__PendingReturned=0, KernelMode=0, lcontext=11, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1910] compRetStatus = HPCdrCompletion(DeviceObject, Irp, lcontext) [L1920] __cil_tmp8 = (unsigned long )compRetStatus VAL [\old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=3221225659, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__PendingReturned=0, KernelMode=0, lcontext=11, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1921] COND FALSE !(__cil_tmp8 == -1073741802) VAL [\old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=3221225659, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__PendingReturned=0, KernelMode=0, lcontext=11, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1928] COND FALSE !(\read(Irp__PendingReturned)) [L1931] int tmp_ndt_4; [L1932] tmp_ndt_4 = __VERIFIER_nondet_int() [L1933] COND TRUE tmp_ndt_4 == 0 VAL [\old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=3221225659, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__PendingReturned=0, KernelMode=0, lcontext=11, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1944] returnVal2 = 0 VAL [\old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=3221225659, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__PendingReturned=0, KernelMode=0, lcontext=11, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, returnVal2=0, routine=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1958] COND TRUE s == NP [L1959] s = IPC [L1960] lowerDriverReturn = returnVal2 VAL [\old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=3221225659, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__PendingReturned=0, KernelMode=0, lcontext=11, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1981] return (returnVal2); VAL [\old(DeviceObject)=10, \old(Irp)=9, \old(lowerDriverReturn)=0, \old(pended)=0, \old(s)=1, \old(setEventCalled)=0, \result=0, __cil_tmp8=3221225659, compFptr=0, compRegistered=1, compRetStatus=3221225659, customIrp=0, DC=2, DeviceObject=10, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, Irp__PendingReturned=0, KernelMode=0, lcontext=11, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, returnVal2=0, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp_ndt_4=0, UNLOADED=0] [L1626] RET, EXPR IofCallDriver(deviceExtension__TargetDeviceObject, Irp) VAL [\old(DeviceObject)=8, \old(Irp)=9, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=10, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IofCallDriver(deviceExtension__TargetDeviceObject, Irp)=0, IPC=7, Irp=9, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L1626] tmp = IofCallDriver(deviceExtension__TargetDeviceObject, Irp) [L1628] return (tmp); VAL [\old(DeviceObject)=8, \old(Irp)=9, \result=0, __cil_tmp10=131072, __cil_tmp11=147456, __cil_tmp12=147512, __cil_tmp8=56, __cil_tmp9=16384, compFptr=0, compRegistered=1, currentIrpStack__Parameters__DeviceIoControl__IoControlCode=147512, customIrp=0, DC=2, deviceExtension__TargetDeviceObject=10, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, irpSp__Control=224, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, tmp=0, UNLOADED=0] [L348] RET, EXPR CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L348] status = CdAudioHPCdrDeviceControl(DeviceObject, Irp) [L363] return (status); VAL [\old(DeviceObject)=8, \old(Irp)=9, \result=0, compFptr=0, compRegistered=1, customIrp=0, DC=2, deviceExtension__Active=7, DeviceObject=8, DeviceUsageTypePaging=1, Executive=0, IPC=7, Irp=9, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, UNLOADED=0] [L1798] RET, EXPR CdAudioDeviceControl(devobj, pirp) [L1798] status = CdAudioDeviceControl(devobj, pirp) [L1819] COND FALSE !(\read(we_should_unload)) VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1825] COND TRUE pended == 1 VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1826] COND FALSE !(s == NP) VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1833] COND TRUE pended == 1 VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1834] COND FALSE !(s == MPR3) VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1841] COND TRUE s != UNLOADED VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1842] COND TRUE status != -1 VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1843] COND TRUE s != SKIP2 VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1844] COND FALSE !(s != IPC) VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1857] COND FALSE !(pended != 1) VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1869] COND TRUE status != 259 VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, devobj=8, Executive=0, IPC=7, irp=9, irp_choice=0, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, pirp__IoStatus__Status=3221225659, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, status=0, Suspended=5, tmp_ndt_1=2, UNLOADED=0, we_should_unload=0] [L1871] CALL errorFn() VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] [L59] reach_error() VAL [compFptr=0, compRegistered=1, customIrp=0, DC=2, DeviceUsageTypePaging=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=1, pirp=9, routine=0, s=7, setEventCalled=0, SKIP1=3, SKIP2=4, Suspended=5, UNLOADED=0] - UnprovableResult [Line: 1717]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 14 procedures, 471 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 52.4s, OverallIterations: 58, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 15.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18317 SdHoareTripleChecker+Valid, 11.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18096 mSDsluCounter, 182615 SdHoareTripleChecker+Invalid, 9.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 152677 mSDsCounter, 2122 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9713 IncrementalHoareTripleChecker+Invalid, 11835 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2122 mSolverCounterUnsat, 29938 mSDtfsCounter, 9713 mSolverCounterSat, 0.3s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5047 GetRequests, 4406 SyntacticMatches, 1 SemanticMatches, 640 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1237 ImplicationChecksByTransitivity, 6.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=909occurred in iteration=7, InterpolantAutomatonStates: 501, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 57 MinimizatonAttempts, 1808 StatesRemovedByMinimization, 41 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 1.0s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 15.7s InterpolantComputationTime, 2553 NumberOfCodeBlocks, 2553 NumberOfCodeBlocksAsserted, 58 NumberOfCheckSat, 4876 ConstructedInterpolants, 0 QuantifiedInterpolants, 11071 SizeOfPredicates, 159 NumberOfNonLiveVariables, 9362 ConjunctsInSsa, 354 ConjunctsInUnsatCore, 114 InterpolantComputations, 114 PerfectInterpolantSequences, 14/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-23 03:15:34,580 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_62ae22a0-0986-45cf-a3a0-5ecd94d5bd59/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample