./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/sll-circular-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73283b87-414a-415c-bcac-7cd0ef175434/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73283b87-414a-415c-bcac-7cd0ef175434/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73283b87-414a-415c-bcac-7cd0ef175434/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73283b87-414a-415c-bcac-7cd0ef175434/bin/uautomizer-GMMbpWq8iD/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/sll-circular-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73283b87-414a-415c-bcac-7cd0ef175434/bin/uautomizer-GMMbpWq8iD/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73283b87-414a-415c-bcac-7cd0ef175434/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f91abcd8d9f4c4a9bb166bca3090e9f421fd2afed3c0226bce3d2e7c0b6ce95e ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 23:08:10,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:08:10,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:08:11,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:08:11,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:08:11,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:08:11,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:08:11,021 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:08:11,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:08:11,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:08:11,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:08:11,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:08:11,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:08:11,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:08:11,032 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:08:11,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:08:11,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:08:11,036 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:08:11,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:08:11,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:08:11,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:08:11,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:08:11,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:08:11,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:08:11,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:08:11,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:08:11,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:08:11,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:08:11,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:08:11,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:08:11,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:08:11,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:08:11,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:08:11,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:08:11,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:08:11,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:08:11,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:08:11,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:08:11,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:08:11,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:08:11,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:08:11,071 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73283b87-414a-415c-bcac-7cd0ef175434/bin/uautomizer-GMMbpWq8iD/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2021-10-28 23:08:11,118 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:08:11,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:08:11,119 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:08:11,119 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:08:11,127 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:08:11,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:08:11,128 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:08:11,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:08:11,128 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:08:11,129 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 23:08:11,130 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:08:11,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:08:11,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:08:11,131 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 23:08:11,131 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 23:08:11,131 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:08:11,131 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 23:08:11,132 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:08:11,132 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:08:11,132 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:08:11,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:08:11,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:08:11,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:08:11,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:08:11,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:08:11,134 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:08:11,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:08:11,134 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:08:11,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73283b87-414a-415c-bcac-7cd0ef175434/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73283b87-414a-415c-bcac-7cd0ef175434/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91abcd8d9f4c4a9bb166bca3090e9f421fd2afed3c0226bce3d2e7c0b6ce95e [2021-10-28 23:08:11,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:08:11,479 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:08:11,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:08:11,483 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:08:11,485 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:08:11,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73283b87-414a-415c-bcac-7cd0ef175434/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/forester-heap/sll-circular-2.i [2021-10-28 23:08:11,570 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73283b87-414a-415c-bcac-7cd0ef175434/bin/uautomizer-GMMbpWq8iD/data/93c958eca/28431a733dfa4d2ab9e0720d4b12d0d5/FLAG3cb181614 [2021-10-28 23:08:12,235 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:08:12,237 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73283b87-414a-415c-bcac-7cd0ef175434/sv-benchmarks/c/forester-heap/sll-circular-2.i [2021-10-28 23:08:12,263 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73283b87-414a-415c-bcac-7cd0ef175434/bin/uautomizer-GMMbpWq8iD/data/93c958eca/28431a733dfa4d2ab9e0720d4b12d0d5/FLAG3cb181614 [2021-10-28 23:08:12,496 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73283b87-414a-415c-bcac-7cd0ef175434/bin/uautomizer-GMMbpWq8iD/data/93c958eca/28431a733dfa4d2ab9e0720d4b12d0d5 [2021-10-28 23:08:12,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:08:12,500 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 23:08:12,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:08:12,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:08:12,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:08:12,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:08:12" (1/1) ... [2021-10-28 23:08:12,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b6103b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:12, skipping insertion in model container [2021-10-28 23:08:12,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:08:12" (1/1) ... [2021-10-28 23:08:12,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:08:12,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:08:12,961 WARN L228 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_73283b87-414a-415c-bcac-7cd0ef175434/sv-benchmarks/c/forester-heap/sll-circular-2.i[22324,22337] [2021-10-28 23:08:12,969 WARN L228 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_73283b87-414a-415c-bcac-7cd0ef175434/sv-benchmarks/c/forester-heap/sll-circular-2.i[22430,22443] [2021-10-28 23:08:12,972 WARN L228 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_73283b87-414a-415c-bcac-7cd0ef175434/sv-benchmarks/c/forester-heap/sll-circular-2.i[22554,22567] [2021-10-28 23:08:12,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:08:13,005 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:08:13,067 WARN L228 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_73283b87-414a-415c-bcac-7cd0ef175434/sv-benchmarks/c/forester-heap/sll-circular-2.i[22324,22337] [2021-10-28 23:08:13,071 WARN L228 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_73283b87-414a-415c-bcac-7cd0ef175434/sv-benchmarks/c/forester-heap/sll-circular-2.i[22430,22443] [2021-10-28 23:08:13,077 WARN L228 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_73283b87-414a-415c-bcac-7cd0ef175434/sv-benchmarks/c/forester-heap/sll-circular-2.i[22554,22567] [2021-10-28 23:08:13,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:08:13,117 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:08:13,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:13 WrapperNode [2021-10-28 23:08:13,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:08:13,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:08:13,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:08:13,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:08:13,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:13" (1/1) ... [2021-10-28 23:08:13,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:13" (1/1) ... [2021-10-28 23:08:13,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:13" (1/1) ... [2021-10-28 23:08:13,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:13" (1/1) ... [2021-10-28 23:08:13,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:13" (1/1) ... [2021-10-28 23:08:13,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:13" (1/1) ... [2021-10-28 23:08:13,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:13" (1/1) ... [2021-10-28 23:08:13,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:08:13,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:08:13,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:08:13,248 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:08:13,249 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:13" (1/1) ... [2021-10-28 23:08:13,257 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:08:13,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73283b87-414a-415c-bcac-7cd0ef175434/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:08:13,288 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73283b87-414a-415c-bcac-7cd0ef175434/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:08:13,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73283b87-414a-415c-bcac-7cd0ef175434/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:08:13,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 23:08:13,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:08:13,342 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 23:08:13,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 23:08:13,342 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-10-28 23:08:13,342 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-10-28 23:08:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-10-28 23:08:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-10-28 23:08:13,345 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-10-28 23:08:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-10-28 23:08:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-10-28 23:08:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-10-28 23:08:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-10-28 23:08:13,346 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-10-28 23:08:13,347 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-10-28 23:08:13,347 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-10-28 23:08:13,347 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-10-28 23:08:13,347 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-10-28 23:08:13,347 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-10-28 23:08:13,347 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-10-28 23:08:13,348 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-10-28 23:08:13,348 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-10-28 23:08:13,348 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-10-28 23:08:13,348 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-10-28 23:08:13,348 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-10-28 23:08:13,349 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-10-28 23:08:13,349 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-10-28 23:08:13,349 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-10-28 23:08:13,349 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-10-28 23:08:13,349 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-10-28 23:08:13,349 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-10-28 23:08:13,350 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-10-28 23:08:13,350 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-10-28 23:08:13,350 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-10-28 23:08:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-10-28 23:08:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-10-28 23:08:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-10-28 23:08:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-10-28 23:08:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-10-28 23:08:13,351 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-10-28 23:08:13,352 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-10-28 23:08:13,352 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-10-28 23:08:13,352 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-10-28 23:08:13,353 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-10-28 23:08:13,353 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-10-28 23:08:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-10-28 23:08:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-10-28 23:08:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-10-28 23:08:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-10-28 23:08:13,354 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-10-28 23:08:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-10-28 23:08:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-10-28 23:08:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-10-28 23:08:13,355 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-10-28 23:08:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-10-28 23:08:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-10-28 23:08:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-10-28 23:08:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-10-28 23:08:13,356 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2021-10-28 23:08:13,357 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-10-28 23:08:13,357 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-10-28 23:08:13,357 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-10-28 23:08:13,357 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-10-28 23:08:13,359 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 23:08:13,359 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-10-28 23:08:13,360 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-10-28 23:08:13,360 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-10-28 23:08:13,360 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-10-28 23:08:13,360 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-10-28 23:08:13,361 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-10-28 23:08:13,361 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-10-28 23:08:13,361 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-10-28 23:08:13,361 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-10-28 23:08:13,361 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-10-28 23:08:13,361 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-10-28 23:08:13,362 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-10-28 23:08:13,362 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-10-28 23:08:13,363 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-10-28 23:08:13,363 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-10-28 23:08:13,363 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-10-28 23:08:13,363 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-10-28 23:08:13,363 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-10-28 23:08:13,364 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-10-28 23:08:13,364 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-10-28 23:08:13,364 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-10-28 23:08:13,364 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-10-28 23:08:13,364 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-10-28 23:08:13,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-10-28 23:08:13,365 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-10-28 23:08:13,365 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-10-28 23:08:13,365 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-10-28 23:08:13,365 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-10-28 23:08:13,365 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-10-28 23:08:13,365 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-10-28 23:08:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-10-28 23:08:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-10-28 23:08:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-10-28 23:08:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-10-28 23:08:13,366 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-10-28 23:08:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-10-28 23:08:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-10-28 23:08:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-10-28 23:08:13,367 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-10-28 23:08:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-10-28 23:08:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-10-28 23:08:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-10-28 23:08:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-10-28 23:08:13,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 23:08:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 23:08:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-10-28 23:08:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-10-28 23:08:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 23:08:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:08:13,369 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 23:08:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 23:08:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 23:08:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 23:08:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 23:08:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 23:08:13,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 23:08:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 23:08:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:08:13,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:08:14,065 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:08:14,065 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-28 23:08:14,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:08:14 BoogieIcfgContainer [2021-10-28 23:08:14,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:08:14,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:08:14,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:08:14,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:08:14,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:08:12" (1/3) ... [2021-10-28 23:08:14,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bbf970c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:08:14, skipping insertion in model container [2021-10-28 23:08:14,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:08:13" (2/3) ... [2021-10-28 23:08:14,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bbf970c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:08:14, skipping insertion in model container [2021-10-28 23:08:14,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:08:14" (3/3) ... [2021-10-28 23:08:14,095 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-circular-2.i [2021-10-28 23:08:14,100 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:08:14,101 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2021-10-28 23:08:14,145 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:08:14,152 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 [2021-10-28 23:08:14,152 INFO L340 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2021-10-28 23:08:14,169 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 56 states have (on average 2.1607142857142856) internal successors, (121), 102 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-10-28 23:08:14,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:08:14,177 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:14,177 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:14,178 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:14,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:14,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1675934833, now seen corresponding path program 1 times [2021-10-28 23:08:14,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:14,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820469886] [2021-10-28 23:08:14,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:14,194 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:14,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:14,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:14,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:14,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:14,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820469886] [2021-10-28 23:08:14,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820469886] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:14,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:14,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:08:14,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140480523] [2021-10-28 23:08:14,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:08:14,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:14,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:08:14,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:08:14,500 INFO L87 Difference]: Start difference. First operand has 107 states, 56 states have (on average 2.1607142857142856) internal successors, (121), 102 states have internal predecessors, (121), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 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) [2021-10-28 23:08:14,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:14,787 INFO L93 Difference]: Finished difference Result 113 states and 120 transitions. [2021-10-28 23:08:14,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:08:14,789 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 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 7 [2021-10-28 23:08:14,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:14,799 INFO L225 Difference]: With dead ends: 113 [2021-10-28 23:08:14,799 INFO L226 Difference]: Without dead ends: 110 [2021-10-28 23:08:14,801 INFO L786 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 [2021-10-28 23:08:14,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-28 23:08:14,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 100. [2021-10-28 23:08:14,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 55 states have (on average 1.8727272727272728) internal successors, (103), 96 states have internal predecessors, (103), 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) [2021-10-28 23:08:14,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2021-10-28 23:08:14,855 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 7 [2021-10-28 23:08:14,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:14,855 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2021-10-28 23:08:14,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 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) [2021-10-28 23:08:14,856 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2021-10-28 23:08:14,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 23:08:14,857 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:14,857 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:14,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:08:14,857 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:14,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:14,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1675934832, now seen corresponding path program 1 times [2021-10-28 23:08:14,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:14,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461123363] [2021-10-28 23:08:14,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:14,861 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:14,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:14,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:14,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:14,997 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461123363] [2021-10-28 23:08:14,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461123363] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:14,998 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:14,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 23:08:14,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211444859] [2021-10-28 23:08:14,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:08:15,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:15,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:08:15,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:08:15,003 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 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) [2021-10-28 23:08:15,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:15,202 INFO L93 Difference]: Finished difference Result 108 states and 114 transitions. [2021-10-28 23:08:15,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:08:15,203 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 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 7 [2021-10-28 23:08:15,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:15,204 INFO L225 Difference]: With dead ends: 108 [2021-10-28 23:08:15,205 INFO L226 Difference]: Without dead ends: 108 [2021-10-28 23:08:15,205 INFO L786 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 [2021-10-28 23:08:15,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-10-28 23:08:15,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 96. [2021-10-28 23:08:15,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 55 states have (on average 1.8) internal successors, (99), 92 states have internal predecessors, (99), 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) [2021-10-28 23:08:15,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2021-10-28 23:08:15,214 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 7 [2021-10-28 23:08:15,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:15,215 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2021-10-28 23:08:15,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 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) [2021-10-28 23:08:15,216 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2021-10-28 23:08:15,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:08:15,216 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:15,216 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:15,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:08:15,217 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr13REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:15,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:15,218 INFO L85 PathProgramCache]: Analyzing trace with hash 75861693, now seen corresponding path program 1 times [2021-10-28 23:08:15,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:15,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156575145] [2021-10-28 23:08:15,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:15,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:15,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:15,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:15,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156575145] [2021-10-28 23:08:15,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156575145] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:15,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:15,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:08:15,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060995055] [2021-10-28 23:08:15,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:08:15,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:15,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:08:15,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:08:15,299 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 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) [2021-10-28 23:08:15,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:15,516 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2021-10-28 23:08:15,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 23:08:15,517 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 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 12 [2021-10-28 23:08:15,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:15,518 INFO L225 Difference]: With dead ends: 94 [2021-10-28 23:08:15,518 INFO L226 Difference]: Without dead ends: 94 [2021-10-28 23:08:15,518 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:08:15,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-28 23:08:15,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2021-10-28 23:08:15,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 55 states have (on average 1.6) internal successors, (88), 81 states have internal predecessors, (88), 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) [2021-10-28 23:08:15,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2021-10-28 23:08:15,526 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 12 [2021-10-28 23:08:15,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:15,526 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2021-10-28 23:08:15,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 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) [2021-10-28 23:08:15,527 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2021-10-28 23:08:15,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 23:08:15,527 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:15,527 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:15,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 23:08:15,528 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr14REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:15,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:15,528 INFO L85 PathProgramCache]: Analyzing trace with hash 75861694, now seen corresponding path program 1 times [2021-10-28 23:08:15,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:15,529 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013478090] [2021-10-28 23:08:15,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:15,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:15,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:15,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:15,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:15,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013478090] [2021-10-28 23:08:15,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013478090] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:15,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:15,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:08:15,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383344649] [2021-10-28 23:08:15,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 23:08:15,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:15,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 23:08:15,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 23:08:15,652 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 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) [2021-10-28 23:08:15,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:15,868 INFO L93 Difference]: Finished difference Result 105 states and 112 transitions. [2021-10-28 23:08:15,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:08:15,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 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 12 [2021-10-28 23:08:15,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:15,870 INFO L225 Difference]: With dead ends: 105 [2021-10-28 23:08:15,870 INFO L226 Difference]: Without dead ends: 105 [2021-10-28 23:08:15,871 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:08:15,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-10-28 23:08:15,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 91. [2021-10-28 23:08:15,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 61 states have (on average 1.5573770491803278) internal successors, (95), 87 states have internal predecessors, (95), 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) [2021-10-28 23:08:15,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2021-10-28 23:08:15,878 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 12 [2021-10-28 23:08:15,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:15,879 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2021-10-28 23:08:15,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 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) [2021-10-28 23:08:15,879 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2021-10-28 23:08:15,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:08:15,880 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:15,880 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:15,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 23:08:15,881 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr17ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:15,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:15,882 INFO L85 PathProgramCache]: Analyzing trace with hash 361683424, now seen corresponding path program 1 times [2021-10-28 23:08:15,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:15,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212481602] [2021-10-28 23:08:15,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:15,883 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:16,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:16,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:16,093 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:16,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212481602] [2021-10-28 23:08:16,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212481602] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:16,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:16,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 23:08:16,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470366349] [2021-10-28 23:08:16,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:08:16,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:16,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:08:16,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:08:16,098 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 1 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) [2021-10-28 23:08:16,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:16,399 INFO L93 Difference]: Finished difference Result 174 states and 185 transitions. [2021-10-28 23:08:16,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:08:16,400 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 1 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 16 [2021-10-28 23:08:16,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:16,402 INFO L225 Difference]: With dead ends: 174 [2021-10-28 23:08:16,402 INFO L226 Difference]: Without dead ends: 174 [2021-10-28 23:08:16,403 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:08:16,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2021-10-28 23:08:16,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 94. [2021-10-28 23:08:16,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 64 states have (on average 1.53125) internal successors, (98), 90 states have internal predecessors, (98), 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) [2021-10-28 23:08:16,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2021-10-28 23:08:16,410 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 16 [2021-10-28 23:08:16,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:16,411 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2021-10-28 23:08:16,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 1 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) [2021-10-28 23:08:16,411 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2021-10-28 23:08:16,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:08:16,412 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:16,412 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:16,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 23:08:16,413 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr8REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:16,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:16,413 INFO L85 PathProgramCache]: Analyzing trace with hash 368361480, now seen corresponding path program 1 times [2021-10-28 23:08:16,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:16,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504241427] [2021-10-28 23:08:16,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:16,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:16,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:16,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:16,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:16,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:16,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504241427] [2021-10-28 23:08:16,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504241427] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:16,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:16,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:08:16,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620151630] [2021-10-28 23:08:16,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:08:16,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:16,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:08:16,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:08:16,502 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 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) [2021-10-28 23:08:16,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:16,751 INFO L93 Difference]: Finished difference Result 93 states and 100 transitions. [2021-10-28 23:08:16,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:08:16,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 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 16 [2021-10-28 23:08:16,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:16,753 INFO L225 Difference]: With dead ends: 93 [2021-10-28 23:08:16,753 INFO L226 Difference]: Without dead ends: 93 [2021-10-28 23:08:16,753 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:08:16,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-28 23:08:16,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-10-28 23:08:16,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 64 states have (on average 1.515625) internal successors, (97), 89 states have internal predecessors, (97), 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) [2021-10-28 23:08:16,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 100 transitions. [2021-10-28 23:08:16,770 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 100 transitions. Word has length 16 [2021-10-28 23:08:16,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:16,771 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 100 transitions. [2021-10-28 23:08:16,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 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) [2021-10-28 23:08:16,771 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 100 transitions. [2021-10-28 23:08:16,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 23:08:16,772 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:16,772 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:16,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 23:08:16,772 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr9REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:16,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:16,773 INFO L85 PathProgramCache]: Analyzing trace with hash 368361481, now seen corresponding path program 1 times [2021-10-28 23:08:16,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:16,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682111135] [2021-10-28 23:08:16,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:16,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:16,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:16,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:16,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:16,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:16,908 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682111135] [2021-10-28 23:08:16,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682111135] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:16,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:16,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 23:08:16,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599493529] [2021-10-28 23:08:16,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:08:16,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:16,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:08:16,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:08:16,911 INFO L87 Difference]: Start difference. First operand 93 states and 100 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 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) [2021-10-28 23:08:17,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:17,208 INFO L93 Difference]: Finished difference Result 89 states and 96 transitions. [2021-10-28 23:08:17,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:08:17,209 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 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 16 [2021-10-28 23:08:17,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:17,210 INFO L225 Difference]: With dead ends: 89 [2021-10-28 23:08:17,210 INFO L226 Difference]: Without dead ends: 89 [2021-10-28 23:08:17,210 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:08:17,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-28 23:08:17,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2021-10-28 23:08:17,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 61 states have (on average 1.459016393442623) internal successors, (89), 81 states have internal predecessors, (89), 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) [2021-10-28 23:08:17,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 92 transitions. [2021-10-28 23:08:17,214 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 92 transitions. Word has length 16 [2021-10-28 23:08:17,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:17,215 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 92 transitions. [2021-10-28 23:08:17,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 1 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) [2021-10-28 23:08:17,215 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 92 transitions. [2021-10-28 23:08:17,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:08:17,216 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:17,216 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:17,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 23:08:17,216 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr18REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:17,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:17,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1672711574, now seen corresponding path program 1 times [2021-10-28 23:08:17,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:17,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904092051] [2021-10-28 23:08:17,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:17,217 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:17,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:17,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:17,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:17,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:17,341 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904092051] [2021-10-28 23:08:17,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904092051] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:17,342 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:17,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:08:17,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215177563] [2021-10-28 23:08:17,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:08:17,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:17,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:08:17,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:08:17,344 INFO L87 Difference]: Start difference. First operand 85 states and 92 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 1 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) [2021-10-28 23:08:17,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:17,680 INFO L93 Difference]: Finished difference Result 128 states and 137 transitions. [2021-10-28 23:08:17,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:08:17,681 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 1 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 17 [2021-10-28 23:08:17,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:17,682 INFO L225 Difference]: With dead ends: 128 [2021-10-28 23:08:17,682 INFO L226 Difference]: Without dead ends: 128 [2021-10-28 23:08:17,683 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:08:17,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-28 23:08:17,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 87. [2021-10-28 23:08:17,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 63 states have (on average 1.4603174603174602) internal successors, (92), 83 states have internal predecessors, (92), 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) [2021-10-28 23:08:17,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2021-10-28 23:08:17,686 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 17 [2021-10-28 23:08:17,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:17,687 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2021-10-28 23:08:17,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 1 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) [2021-10-28 23:08:17,687 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2021-10-28 23:08:17,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 23:08:17,688 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:17,688 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:17,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 23:08:17,688 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr19REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:17,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:17,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1672711573, now seen corresponding path program 1 times [2021-10-28 23:08:17,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:17,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378621181] [2021-10-28 23:08:17,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:17,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:17,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:17,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:17,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:17,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378621181] [2021-10-28 23:08:17,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378621181] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:17,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:17,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:08:17,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231365980] [2021-10-28 23:08:17,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:08:17,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:17,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:08:17,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:08:17,934 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 1 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) [2021-10-28 23:08:18,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:18,317 INFO L93 Difference]: Finished difference Result 162 states and 173 transitions. [2021-10-28 23:08:18,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:08:18,318 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 1 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 17 [2021-10-28 23:08:18,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:18,319 INFO L225 Difference]: With dead ends: 162 [2021-10-28 23:08:18,319 INFO L226 Difference]: Without dead ends: 162 [2021-10-28 23:08:18,319 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:08:18,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-10-28 23:08:18,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 99. [2021-10-28 23:08:18,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 75 states have (on average 1.4666666666666666) internal successors, (110), 95 states have internal predecessors, (110), 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) [2021-10-28 23:08:18,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2021-10-28 23:08:18,323 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 17 [2021-10-28 23:08:18,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:18,324 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2021-10-28 23:08:18,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 1 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) [2021-10-28 23:08:18,324 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2021-10-28 23:08:18,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:08:18,325 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:18,325 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:18,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 23:08:18,325 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr22REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:18,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:18,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1539848306, now seen corresponding path program 1 times [2021-10-28 23:08:18,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:18,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409929430] [2021-10-28 23:08:18,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:18,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:18,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:18,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:18,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:18,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409929430] [2021-10-28 23:08:18,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409929430] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:18,480 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:18,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 23:08:18,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380139021] [2021-10-28 23:08:18,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:08:18,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:18,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:08:18,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:08:18,482 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 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) [2021-10-28 23:08:18,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:18,900 INFO L93 Difference]: Finished difference Result 147 states and 158 transitions. [2021-10-28 23:08:18,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:08:18,901 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 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 20 [2021-10-28 23:08:18,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:18,902 INFO L225 Difference]: With dead ends: 147 [2021-10-28 23:08:18,902 INFO L226 Difference]: Without dead ends: 147 [2021-10-28 23:08:18,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-10-28 23:08:18,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-10-28 23:08:18,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 99. [2021-10-28 23:08:18,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 75 states have (on average 1.4533333333333334) internal successors, (109), 95 states have internal predecessors, (109), 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) [2021-10-28 23:08:18,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2021-10-28 23:08:18,906 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 20 [2021-10-28 23:08:18,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:18,906 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2021-10-28 23:08:18,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 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) [2021-10-28 23:08:18,907 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2021-10-28 23:08:18,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 23:08:18,907 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:18,907 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:18,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 23:08:18,908 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr23REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:18,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:18,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1539848305, now seen corresponding path program 1 times [2021-10-28 23:08:18,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:18,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64057855] [2021-10-28 23:08:18,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:18,909 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:18,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:19,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:19,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:19,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64057855] [2021-10-28 23:08:19,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64057855] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:19,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:19,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:08:19,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065243748] [2021-10-28 23:08:19,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:08:19,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:19,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:08:19,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:08:19,119 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 1 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) [2021-10-28 23:08:19,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:19,517 INFO L93 Difference]: Finished difference Result 157 states and 168 transitions. [2021-10-28 23:08:19,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:08:19,518 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 1 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 20 [2021-10-28 23:08:19,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:19,519 INFO L225 Difference]: With dead ends: 157 [2021-10-28 23:08:19,519 INFO L226 Difference]: Without dead ends: 157 [2021-10-28 23:08:19,520 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-10-28 23:08:19,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-10-28 23:08:19,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 99. [2021-10-28 23:08:19,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 75 states have (on average 1.44) internal successors, (108), 95 states have internal predecessors, (108), 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) [2021-10-28 23:08:19,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2021-10-28 23:08:19,523 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 20 [2021-10-28 23:08:19,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:19,524 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2021-10-28 23:08:19,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 1 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) [2021-10-28 23:08:19,524 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2021-10-28 23:08:19,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 23:08:19,525 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:19,525 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:19,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 23:08:19,525 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr35REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:19,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:19,526 INFO L85 PathProgramCache]: Analyzing trace with hash -490672030, now seen corresponding path program 1 times [2021-10-28 23:08:19,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:19,526 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128374161] [2021-10-28 23:08:19,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:19,527 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:19,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:19,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:19,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:19,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128374161] [2021-10-28 23:08:19,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128374161] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:19,607 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:19,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:08:19,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006200761] [2021-10-28 23:08:19,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 23:08:19,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:19,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 23:08:19,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:08:19,609 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 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) [2021-10-28 23:08:19,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:19,901 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2021-10-28 23:08:19,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:08:19,902 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 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 21 [2021-10-28 23:08:19,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:19,903 INFO L225 Difference]: With dead ends: 136 [2021-10-28 23:08:19,903 INFO L226 Difference]: Without dead ends: 136 [2021-10-28 23:08:19,903 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:08:19,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-10-28 23:08:19,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 100. [2021-10-28 23:08:19,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 76 states have (on average 1.4473684210526316) internal successors, (110), 96 states have internal predecessors, (110), 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) [2021-10-28 23:08:19,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2021-10-28 23:08:19,907 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 21 [2021-10-28 23:08:19,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:19,907 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2021-10-28 23:08:19,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 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) [2021-10-28 23:08:19,907 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2021-10-28 23:08:19,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 23:08:19,908 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:19,908 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:19,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 23:08:19,909 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr36REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:19,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:19,909 INFO L85 PathProgramCache]: Analyzing trace with hash -490672029, now seen corresponding path program 1 times [2021-10-28 23:08:19,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:19,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57136971] [2021-10-28 23:08:19,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:19,910 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:20,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:20,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:20,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:20,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57136971] [2021-10-28 23:08:20,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57136971] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:20,148 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:20,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 23:08:20,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126343387] [2021-10-28 23:08:20,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 23:08:20,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:20,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 23:08:20,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-10-28 23:08:20,150 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 1 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) [2021-10-28 23:08:20,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:20,642 INFO L93 Difference]: Finished difference Result 147 states and 159 transitions. [2021-10-28 23:08:20,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 23:08:20,643 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 1 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 21 [2021-10-28 23:08:20,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:20,644 INFO L225 Difference]: With dead ends: 147 [2021-10-28 23:08:20,645 INFO L226 Difference]: Without dead ends: 147 [2021-10-28 23:08:20,645 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-10-28 23:08:20,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-10-28 23:08:20,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 119. [2021-10-28 23:08:20,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 95 states have (on average 1.5052631578947369) internal successors, (143), 115 states have internal predecessors, (143), 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) [2021-10-28 23:08:20,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 146 transitions. [2021-10-28 23:08:20,655 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 146 transitions. Word has length 21 [2021-10-28 23:08:20,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:20,656 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 146 transitions. [2021-10-28 23:08:20,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 1 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) [2021-10-28 23:08:20,656 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 146 transitions. [2021-10-28 23:08:20,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-28 23:08:20,657 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:20,657 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 23:08:20,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 23:08:20,658 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr12ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:20,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:20,658 INFO L85 PathProgramCache]: Analyzing trace with hash 858132418, now seen corresponding path program 1 times [2021-10-28 23:08:20,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:20,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218554866] [2021-10-28 23:08:20,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:20,659 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:20,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:20,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:20,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:20,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218554866] [2021-10-28 23:08:20,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218554866] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:20,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:20,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 23:08:20,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231796540] [2021-10-28 23:08:20,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:08:20,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:20,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:08:20,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-28 23:08:20,720 INFO L87 Difference]: Start difference. First operand 119 states and 146 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 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) [2021-10-28 23:08:20,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:20,907 INFO L93 Difference]: Finished difference Result 121 states and 148 transitions. [2021-10-28 23:08:20,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 23:08:20,908 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 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 21 [2021-10-28 23:08:20,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:20,909 INFO L225 Difference]: With dead ends: 121 [2021-10-28 23:08:20,909 INFO L226 Difference]: Without dead ends: 121 [2021-10-28 23:08:20,909 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:08:20,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-10-28 23:08:20,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 117. [2021-10-28 23:08:20,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 94 states have (on average 1.5) internal successors, (141), 113 states have internal predecessors, (141), 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) [2021-10-28 23:08:20,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 144 transitions. [2021-10-28 23:08:20,913 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 144 transitions. Word has length 21 [2021-10-28 23:08:20,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:20,913 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 144 transitions. [2021-10-28 23:08:20,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 1 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) [2021-10-28 23:08:20,914 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 144 transitions. [2021-10-28 23:08:20,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 23:08:20,914 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:20,915 INFO L513 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] [2021-10-28 23:08:20,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 23:08:20,915 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr42ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:20,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:20,915 INFO L85 PathProgramCache]: Analyzing trace with hash 910586449, now seen corresponding path program 1 times [2021-10-28 23:08:20,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:20,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785096778] [2021-10-28 23:08:20,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:20,916 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:21,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:21,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:21,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:21,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785096778] [2021-10-28 23:08:21,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785096778] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:21,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:21,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 23:08:21,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325837993] [2021-10-28 23:08:21,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 23:08:21,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:21,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 23:08:21,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:08:21,209 INFO L87 Difference]: Start difference. First operand 117 states and 144 transitions. Second operand has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 1 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) [2021-10-28 23:08:21,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:21,703 INFO L93 Difference]: Finished difference Result 156 states and 167 transitions. [2021-10-28 23:08:21,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:08:21,704 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 1 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 23 [2021-10-28 23:08:21,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:21,705 INFO L225 Difference]: With dead ends: 156 [2021-10-28 23:08:21,705 INFO L226 Difference]: Without dead ends: 156 [2021-10-28 23:08:21,706 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2021-10-28 23:08:21,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-10-28 23:08:21,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 118. [2021-10-28 23:08:21,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 95 states have (on average 1.4947368421052631) internal successors, (142), 114 states have internal predecessors, (142), 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) [2021-10-28 23:08:21,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 145 transitions. [2021-10-28 23:08:21,710 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 145 transitions. Word has length 23 [2021-10-28 23:08:21,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:21,710 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 145 transitions. [2021-10-28 23:08:21,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 12 states have internal predecessors, (20), 1 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) [2021-10-28 23:08:21,710 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 145 transitions. [2021-10-28 23:08:21,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:08:21,711 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:21,711 INFO L513 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] [2021-10-28 23:08:21,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-28 23:08:21,712 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr43ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:21,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:21,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1836590927, now seen corresponding path program 1 times [2021-10-28 23:08:21,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:21,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455737088] [2021-10-28 23:08:21,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:21,713 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:21,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:21,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:21,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:21,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:21,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455737088] [2021-10-28 23:08:21,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455737088] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:21,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:21,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:08:21,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596116951] [2021-10-28 23:08:21,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:08:21,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:21,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:08:21,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:08:21,840 INFO L87 Difference]: Start difference. First operand 118 states and 145 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 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) [2021-10-28 23:08:22,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:22,118 INFO L93 Difference]: Finished difference Result 148 states and 162 transitions. [2021-10-28 23:08:22,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 23:08:22,119 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 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 24 [2021-10-28 23:08:22,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:22,120 INFO L225 Difference]: With dead ends: 148 [2021-10-28 23:08:22,120 INFO L226 Difference]: Without dead ends: 148 [2021-10-28 23:08:22,120 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:08:22,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-10-28 23:08:22,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 119. [2021-10-28 23:08:22,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 96 states have (on average 1.4895833333333333) internal successors, (143), 115 states have internal predecessors, (143), 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) [2021-10-28 23:08:22,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 146 transitions. [2021-10-28 23:08:22,124 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 146 transitions. Word has length 24 [2021-10-28 23:08:22,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:22,125 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 146 transitions. [2021-10-28 23:08:22,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 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) [2021-10-28 23:08:22,125 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 146 transitions. [2021-10-28 23:08:22,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 23:08:22,126 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:22,126 INFO L513 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] [2021-10-28 23:08:22,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-28 23:08:22,126 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr30ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:22,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:22,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1392891139, now seen corresponding path program 1 times [2021-10-28 23:08:22,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:22,127 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767155964] [2021-10-28 23:08:22,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:22,127 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:22,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:22,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:22,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:22,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767155964] [2021-10-28 23:08:22,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767155964] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:22,349 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:22,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-28 23:08:22,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536899865] [2021-10-28 23:08:22,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 23:08:22,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:22,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 23:08:22,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:08:22,351 INFO L87 Difference]: Start difference. First operand 119 states and 146 transitions. Second operand has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 1 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) [2021-10-28 23:08:22,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:22,864 INFO L93 Difference]: Finished difference Result 142 states and 153 transitions. [2021-10-28 23:08:22,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 23:08:22,864 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 1 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 24 [2021-10-28 23:08:22,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:22,865 INFO L225 Difference]: With dead ends: 142 [2021-10-28 23:08:22,865 INFO L226 Difference]: Without dead ends: 142 [2021-10-28 23:08:22,866 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2021-10-28 23:08:22,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2021-10-28 23:08:22,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 119. [2021-10-28 23:08:22,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 96 states have (on average 1.4791666666666667) internal successors, (142), 115 states have internal predecessors, (142), 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) [2021-10-28 23:08:22,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 145 transitions. [2021-10-28 23:08:22,870 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 145 transitions. Word has length 24 [2021-10-28 23:08:22,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:22,870 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 145 transitions. [2021-10-28 23:08:22,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 12 states have internal predecessors, (21), 1 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) [2021-10-28 23:08:22,870 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 145 transitions. [2021-10-28 23:08:22,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 23:08:22,871 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:22,871 INFO L513 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] [2021-10-28 23:08:22,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-28 23:08:22,871 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr39ASSERT_VIOLATIONMEMORY_FREE === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:22,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:22,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1099697949, now seen corresponding path program 1 times [2021-10-28 23:08:22,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:22,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681621783] [2021-10-28 23:08:22,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:22,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:22,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:22,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:22,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:22,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681621783] [2021-10-28 23:08:22,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681621783] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:22,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:22,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 23:08:22,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547085981] [2021-10-28 23:08:22,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 23:08:22,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:22,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 23:08:22,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-28 23:08:22,972 INFO L87 Difference]: Start difference. First operand 119 states and 145 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 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) [2021-10-28 23:08:23,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:23,211 INFO L93 Difference]: Finished difference Result 140 states and 154 transitions. [2021-10-28 23:08:23,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 23:08:23,211 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 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 25 [2021-10-28 23:08:23,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:23,212 INFO L225 Difference]: With dead ends: 140 [2021-10-28 23:08:23,212 INFO L226 Difference]: Without dead ends: 140 [2021-10-28 23:08:23,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-28 23:08:23,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-28 23:08:23,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 121. [2021-10-28 23:08:23,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 98 states have (on average 1.469387755102041) internal successors, (144), 117 states have internal predecessors, (144), 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) [2021-10-28 23:08:23,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 147 transitions. [2021-10-28 23:08:23,217 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 147 transitions. Word has length 25 [2021-10-28 23:08:23,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:23,217 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 147 transitions. [2021-10-28 23:08:23,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 1 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) [2021-10-28 23:08:23,218 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 147 transitions. [2021-10-28 23:08:23,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 23:08:23,218 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:23,219 INFO L513 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] [2021-10-28 23:08:23,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-28 23:08:23,219 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr28REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:23,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:23,220 INFO L85 PathProgramCache]: Analyzing trace with hash -230324523, now seen corresponding path program 1 times [2021-10-28 23:08:23,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:23,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979993908] [2021-10-28 23:08:23,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:23,220 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:23,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:23,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:23,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:23,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:23,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979993908] [2021-10-28 23:08:23,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979993908] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:23,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:23,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 23:08:23,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917575760] [2021-10-28 23:08:23,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 23:08:23,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:23,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 23:08:23,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 23:08:23,272 INFO L87 Difference]: Start difference. First operand 121 states and 147 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 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) [2021-10-28 23:08:23,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:23,426 INFO L93 Difference]: Finished difference Result 122 states and 148 transitions. [2021-10-28 23:08:23,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 23:08:23,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 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 25 [2021-10-28 23:08:23,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:23,428 INFO L225 Difference]: With dead ends: 122 [2021-10-28 23:08:23,429 INFO L226 Difference]: Without dead ends: 122 [2021-10-28 23:08:23,429 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-28 23:08:23,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-10-28 23:08:23,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 120. [2021-10-28 23:08:23,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 98 states have (on average 1.4387755102040816) internal successors, (141), 116 states have internal predecessors, (141), 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) [2021-10-28 23:08:23,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 144 transitions. [2021-10-28 23:08:23,433 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 144 transitions. Word has length 25 [2021-10-28 23:08:23,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:23,433 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 144 transitions. [2021-10-28 23:08:23,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 1 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) [2021-10-28 23:08:23,434 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 144 transitions. [2021-10-28 23:08:23,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 23:08:23,434 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:23,434 INFO L513 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] [2021-10-28 23:08:23,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-28 23:08:23,435 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr29REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:23,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:23,435 INFO L85 PathProgramCache]: Analyzing trace with hash -230324522, now seen corresponding path program 1 times [2021-10-28 23:08:23,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:23,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892608289] [2021-10-28 23:08:23,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:23,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:23,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:23,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:23,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:23,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892608289] [2021-10-28 23:08:23,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892608289] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:23,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:23,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:08:23,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711478350] [2021-10-28 23:08:23,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 23:08:23,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:23,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 23:08:23,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 23:08:23,602 INFO L87 Difference]: Start difference. First operand 120 states and 144 transitions. Second operand has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 1 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) [2021-10-28 23:08:24,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:24,042 INFO L93 Difference]: Finished difference Result 140 states and 151 transitions. [2021-10-28 23:08:24,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 23:08:24,043 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 1 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 25 [2021-10-28 23:08:24,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:24,044 INFO L225 Difference]: With dead ends: 140 [2021-10-28 23:08:24,044 INFO L226 Difference]: Without dead ends: 140 [2021-10-28 23:08:24,044 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-28 23:08:24,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-28 23:08:24,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 120. [2021-10-28 23:08:24,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 98 states have (on average 1.4285714285714286) internal successors, (140), 116 states have internal predecessors, (140), 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) [2021-10-28 23:08:24,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 143 transitions. [2021-10-28 23:08:24,048 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 143 transitions. Word has length 25 [2021-10-28 23:08:24,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:24,049 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 143 transitions. [2021-10-28 23:08:24,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 1 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) [2021-10-28 23:08:24,049 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 143 transitions. [2021-10-28 23:08:24,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 23:08:24,049 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:24,049 INFO L513 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] [2021-10-28 23:08:24,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-28 23:08:24,050 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr17ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:24,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:24,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1584254843, now seen corresponding path program 1 times [2021-10-28 23:08:24,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:24,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284843725] [2021-10-28 23:08:24,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:24,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:24,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:24,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:24,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:24,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:24,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284843725] [2021-10-28 23:08:24,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284843725] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:24,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:24,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 23:08:24,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753596703] [2021-10-28 23:08:24,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 23:08:24,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:24,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 23:08:24,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:08:24,104 INFO L87 Difference]: Start difference. First operand 120 states and 143 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, (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) [2021-10-28 23:08:24,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:24,201 INFO L93 Difference]: Finished difference Result 187 states and 215 transitions. [2021-10-28 23:08:24,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 23:08:24,201 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, (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 25 [2021-10-28 23:08:24,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:24,203 INFO L225 Difference]: With dead ends: 187 [2021-10-28 23:08:24,203 INFO L226 Difference]: Without dead ends: 187 [2021-10-28 23:08:24,203 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 23:08:24,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-10-28 23:08:24,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 133. [2021-10-28 23:08:24,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 111 states have (on average 1.3963963963963963) internal successors, (155), 129 states have internal predecessors, (155), 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) [2021-10-28 23:08:24,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 158 transitions. [2021-10-28 23:08:24,208 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 158 transitions. Word has length 25 [2021-10-28 23:08:24,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:24,209 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 158 transitions. [2021-10-28 23:08:24,209 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, (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) [2021-10-28 23:08:24,209 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 158 transitions. [2021-10-28 23:08:24,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 23:08:24,210 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:24,210 INFO L513 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] [2021-10-28 23:08:24,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-28 23:08:24,210 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr45ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:24,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:24,211 INFO L85 PathProgramCache]: Analyzing trace with hash 267685108, now seen corresponding path program 1 times [2021-10-28 23:08:24,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:24,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493226244] [2021-10-28 23:08:24,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:24,212 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:24,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 23:08:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:08:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 23:08:24,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:08:24,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493226244] [2021-10-28 23:08:24,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493226244] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:08:24,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:08:24,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 23:08:24,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044401921] [2021-10-28 23:08:24,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 23:08:24,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:08:24,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 23:08:24,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-10-28 23:08:24,393 INFO L87 Difference]: Start difference. First operand 133 states and 158 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 1 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) [2021-10-28 23:08:24,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:08:24,773 INFO L93 Difference]: Finished difference Result 151 states and 163 transitions. [2021-10-28 23:08:24,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 23:08:24,773 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 1 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 26 [2021-10-28 23:08:24,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:08:24,775 INFO L225 Difference]: With dead ends: 151 [2021-10-28 23:08:24,775 INFO L226 Difference]: Without dead ends: 151 [2021-10-28 23:08:24,775 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-10-28 23:08:24,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-10-28 23:08:24,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 133. [2021-10-28 23:08:24,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 111 states have (on average 1.3873873873873874) internal successors, (154), 129 states have internal predecessors, (154), 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) [2021-10-28 23:08:24,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 157 transitions. [2021-10-28 23:08:24,779 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 157 transitions. Word has length 26 [2021-10-28 23:08:24,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:08:24,779 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 157 transitions. [2021-10-28 23:08:24,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 1 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) [2021-10-28 23:08:24,780 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 157 transitions. [2021-10-28 23:08:24,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 23:08:24,780 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:08:24,780 INFO L513 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] [2021-10-28 23:08:24,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-28 23:08:24,781 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr30ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION (and 41 more)] === [2021-10-28 23:08:24,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:08:24,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1759981751, now seen corresponding path program 1 times [2021-10-28 23:08:24,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:08:24,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568808194] [2021-10-28 23:08:24,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:08:24,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:08:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:24,794 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:08:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:08:24,832 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:08:24,832 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:08:24,833 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr30ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:08:24,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0REQUIRES_VIOLATION [2021-10-28 23:08:24,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1REQUIRES_VIOLATION [2021-10-28 23:08:24,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2REQUIRES_VIOLATION [2021-10-28 23:08:24,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3REQUIRES_VIOLATION [2021-10-28 23:08:24,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr4REQUIRES_VIOLATION [2021-10-28 23:08:24,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr5REQUIRES_VIOLATION [2021-10-28 23:08:24,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr6REQUIRES_VIOLATION [2021-10-28 23:08:24,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr7REQUIRES_VIOLATION [2021-10-28 23:08:24,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr8REQUIRES_VIOLATION [2021-10-28 23:08:24,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr9REQUIRES_VIOLATION [2021-10-28 23:08:24,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr10REQUIRES_VIOLATION [2021-10-28 23:08:24,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr11REQUIRES_VIOLATION [2021-10-28 23:08:24,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:08:24,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr13REQUIRES_VIOLATION [2021-10-28 23:08:24,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr14REQUIRES_VIOLATION [2021-10-28 23:08:24,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr15REQUIRES_VIOLATION [2021-10-28 23:08:24,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr16REQUIRES_VIOLATION [2021-10-28 23:08:24,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr17ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 23:08:24,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr18REQUIRES_VIOLATION [2021-10-28 23:08:24,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr19REQUIRES_VIOLATION [2021-10-28 23:08:24,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr20REQUIRES_VIOLATION [2021-10-28 23:08:24,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr21REQUIRES_VIOLATION [2021-10-28 23:08:24,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr22REQUIRES_VIOLATION [2021-10-28 23:08:24,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr23REQUIRES_VIOLATION [2021-10-28 23:08:24,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr24REQUIRES_VIOLATION [2021-10-28 23:08:24,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr25REQUIRES_VIOLATION [2021-10-28 23:08:24,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr26REQUIRES_VIOLATION [2021-10-28 23:08:24,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr27REQUIRES_VIOLATION [2021-10-28 23:08:24,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr28REQUIRES_VIOLATION [2021-10-28 23:08:24,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr29REQUIRES_VIOLATION [2021-10-28 23:08:24,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr31REQUIRES_VIOLATION [2021-10-28 23:08:24,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr32REQUIRES_VIOLATION [2021-10-28 23:08:24,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr33REQUIRES_VIOLATION [2021-10-28 23:08:24,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr34REQUIRES_VIOLATION [2021-10-28 23:08:24,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr35REQUIRES_VIOLATION [2021-10-28 23:08:24,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr36REQUIRES_VIOLATION [2021-10-28 23:08:24,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr37REQUIRES_VIOLATION [2021-10-28 23:08:24,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr38REQUIRES_VIOLATION [2021-10-28 23:08:24,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr39ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:08:24,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr40ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:08:24,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr41ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:08:24,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr42ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:08:24,843 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr43ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:08:24,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr44ASSERT_VIOLATIONMEMORY_FREE [2021-10-28 23:08:24,844 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr45ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 23:08:24,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-28 23:08:24,847 INFO L731 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] [2021-10-28 23:08:24,851 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:08:24,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:08:24 BoogieIcfgContainer [2021-10-28 23:08:24,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:08:24,898 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:08:24,898 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:08:24,898 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:08:24,899 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:08:14" (3/4) ... [2021-10-28 23:08:24,900 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 23:08:24,939 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73283b87-414a-415c-bcac-7cd0ef175434/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:08:24,942 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:08:24,943 INFO L168 Benchmark]: Toolchain (without parser) took 12442.95 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 54.7 MB in the beginning and 54.6 MB in the end (delta: 91.6 kB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:24,944 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 92.3 MB. Free memory was 61.3 MB in the beginning and 61.3 MB in the end (delta: 21.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:08:24,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 616.17 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 54.4 MB in the beginning and 95.3 MB in the end (delta: -40.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:24,946 INFO L168 Benchmark]: Boogie Preprocessor took 127.09 ms. Allocated memory is still 127.9 MB. Free memory was 95.3 MB in the beginning and 91.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:24,946 INFO L168 Benchmark]: RCFGBuilder took 820.45 ms. Allocated memory is still 127.9 MB. Free memory was 91.9 MB in the beginning and 68.6 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:24,947 INFO L168 Benchmark]: TraceAbstraction took 10828.45 ms. Allocated memory is still 127.9 MB. Free memory was 68.0 MB in the beginning and 56.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:08:24,947 INFO L168 Benchmark]: Witness Printer took 44.00 ms. Allocated memory is still 127.9 MB. Free memory was 56.7 MB in the beginning and 54.6 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:08:24,949 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 92.3 MB. Free memory was 61.3 MB in the beginning and 61.3 MB in the end (delta: 21.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 616.17 ms. Allocated memory was 92.3 MB in the beginning and 127.9 MB in the end (delta: 35.7 MB). Free memory was 54.4 MB in the beginning and 95.3 MB in the end (delta: -40.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 127.09 ms. Allocated memory is still 127.9 MB. Free memory was 95.3 MB in the beginning and 91.9 MB in the end (delta: 3.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 820.45 ms. Allocated memory is still 127.9 MB. Free memory was 91.9 MB in the beginning and 68.6 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10828.45 ms. Allocated memory is still 127.9 MB. Free memory was 68.0 MB in the beginning and 56.7 MB in the end (delta: 11.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Witness Printer took 44.00 ms. Allocated memory is still 127.9 MB. Free memory was 56.7 MB in the beginning and 54.6 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * 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 - CounterExampleResult [Line: 1032]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L996] SLL* head = malloc(sizeof(SLL)); [L997] head->next = head VAL [head={-1:0}] [L998] head->data = 0 VAL [head={-1:0}] [L1000] SLL* x = head; [L1001] int state = 1; VAL [head={-1:0}, state=1, x={-1:0}] [L1004] COND FALSE !(__VERIFIER_nondet_int()) [L1025] x->data = state VAL [head={-1:0}, state=1, x={-1:0}] [L1027] EXPR head->next VAL [head={-1:0}, head->next={-1:0}, state=1, x={-1:0}] [L1027] x = head->next [L1028] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, state=1, x={-1:0}] [L1030] EXPR x->data VAL [head={-1:0}, state=1, x={-1:0}, x->data=1] [L1030] COND TRUE x->data != 0 [L1032] EXPR x->next VAL [head={-1:0}, state=1, x={-1:0}, x->next={-1:0}] [L1032] EXPR x->next->data VAL [head={-1:0}, state=1, x={-1:0}, x->next={-1:0}, x->next->data=1] [L1032] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={-1:0}, state=1, x={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1032] EXPR x->data VAL [head={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1032] EXPR x->next VAL [head={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1032] EXPR x->next->data VAL [head={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data=1, x->next->data != 0 && x->data > x->next->data=1] [L1032] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data=1, x->next->data != 0 && x->data > x->next->data=0] [L1032] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1032] reach_error() VAL [head={-1:0}, state=1, x={-1:0}] - UnprovableResult [Line: 997]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 997]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 998]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1008]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1009]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1009]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1021]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1023]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1025]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1025]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1027]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1028]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1030]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1033]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1036]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1036]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1038]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1041]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1042]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1044]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 993]: 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 4 procedures, 110 locations, 46 error locations. Started 1 CEGAR loops. OverallTime: 10.7s, OverallIterations: 23, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1414 SDtfs, 3580 SDslu, 4386 SDs, 0 SdLazy, 6077 SolverSat, 298 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 298 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=21, InterpolantAutomatonStates: 210, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 22 MinimizatonAttempts, 610 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 448 NumberOfCodeBlocks, 448 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 398 ConstructedInterpolants, 0 QuantifiedInterpolants, 3744 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 23:08:24,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_73283b87-414a-415c-bcac-7cd0ef175434/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...