./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/lockfree-3.3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1db117ae3c729419255b5da4a7f4ecd64b2d99a167d11f22266a773c4ff13cdb --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:58:50,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:58:50,035 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:58:50,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:58:50,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:58:50,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:58:50,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:58:50,062 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:58:50,064 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:58:50,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:58:50,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:58:50,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:58:50,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:58:50,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:58:50,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:58:50,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:58:50,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:58:50,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:58:50,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:58:50,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:58:50,077 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:58:50,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:58:50,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:58:50,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:58:50,083 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:58:50,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:58:50,084 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:58:50,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:58:50,085 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:58:50,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:58:50,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:58:50,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:58:50,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:58:50,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:58:50,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:58:50,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:58:50,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:58:50,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:58:50,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:58:50,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:58:50,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:58:50,093 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 23:58:50,116 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:58:50,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:58:50,117 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:58:50,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:58:50,118 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:58:50,118 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:58:50,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:58:50,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:58:50,119 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:58:50,119 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:58:50,119 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:58:50,120 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 23:58:50,120 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:58:50,120 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:58:50,120 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:58:50,120 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 23:58:50,121 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 23:58:50,121 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 23:58:50,121 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:58:50,121 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 23:58:50,121 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:58:50,122 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:58:50,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:58:50,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:58:50,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:58:50,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:58:50,123 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:58:50,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:58:50,123 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:58:50,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:58:50,124 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:58:50,124 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_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1db117ae3c729419255b5da4a7f4ecd64b2d99a167d11f22266a773c4ff13cdb [2021-12-06 23:58:50,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:58:50,356 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:58:50,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:58:50,359 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:58:50,360 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:58:50,361 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/memsafety/lockfree-3.3.i [2021-12-06 23:58:50,414 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/data/fdac4ab40/862523c2dc92477498bfa292d754dcc7/FLAG56001757f [2021-12-06 23:58:50,817 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:58:50,817 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/sv-benchmarks/c/memsafety/lockfree-3.3.i [2021-12-06 23:58:50,827 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/data/fdac4ab40/862523c2dc92477498bfa292d754dcc7/FLAG56001757f [2021-12-06 23:58:50,836 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/data/fdac4ab40/862523c2dc92477498bfa292d754dcc7 [2021-12-06 23:58:50,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:58:50,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:58:50,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:58:50,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:58:50,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:58:50,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:58:50" (1/1) ... [2021-12-06 23:58:50,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b646631 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:50, skipping insertion in model container [2021-12-06 23:58:50,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:58:50" (1/1) ... [2021-12-06 23:58:50,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:58:50,872 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:58:51,112 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:58:51,121 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:58:51,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:58:51,186 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:58:51,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:51 WrapperNode [2021-12-06 23:58:51,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:58:51,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:58:51,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:58:51,188 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:58:51,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:51" (1/1) ... [2021-12-06 23:58:51,209 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:51" (1/1) ... [2021-12-06 23:58:51,233 INFO L137 Inliner]: procedures = 125, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 125 [2021-12-06 23:58:51,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:58:51,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:58:51,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:58:51,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:58:51,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:51" (1/1) ... [2021-12-06 23:58:51,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:51" (1/1) ... [2021-12-06 23:58:51,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:51" (1/1) ... [2021-12-06 23:58:51,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:51" (1/1) ... [2021-12-06 23:58:51,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:51" (1/1) ... [2021-12-06 23:58:51,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:51" (1/1) ... [2021-12-06 23:58:51,261 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:51" (1/1) ... [2021-12-06 23:58:51,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:58:51,264 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:58:51,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:58:51,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:58:51,266 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:51" (1/1) ... [2021-12-06 23:58:51,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:58:51,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:51,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:58:51,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:58:51,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 23:58:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 23:58:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 23:58:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:58:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 23:58:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 23:58:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:58:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:58:51,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:58:51,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:58:51,404 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:58:51,405 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:58:51,594 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:58:51,601 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:58:51,601 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 23:58:51,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:58:51 BoogieIcfgContainer [2021-12-06 23:58:51,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:58:51,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:58:51,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:58:51,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:58:51,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:58:50" (1/3) ... [2021-12-06 23:58:51,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c32836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:58:51, skipping insertion in model container [2021-12-06 23:58:51,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:58:51" (2/3) ... [2021-12-06 23:58:51,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c32836 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:58:51, skipping insertion in model container [2021-12-06 23:58:51,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:58:51" (3/3) ... [2021-12-06 23:58:51,610 INFO L111 eAbstractionObserver]: Analyzing ICFG lockfree-3.3.i [2021-12-06 23:58:51,615 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:58:51,615 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-12-06 23:58:51,662 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:58:51,668 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 [2021-12-06 23:58:51,668 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-12-06 23:58:51,679 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 43 states have (on average 1.930232558139535) internal successors, (83), 63 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:51,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-06 23:58:51,685 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:51,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-06 23:58:51,686 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:58:51,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:51,692 INFO L85 PathProgramCache]: Analyzing trace with hash 28819106, now seen corresponding path program 1 times [2021-12-06 23:58:51,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:51,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942742909] [2021-12-06 23:58:51,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:51,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:51,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:51,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:51,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942742909] [2021-12-06 23:58:51,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942742909] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:58:51,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:58:51,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:58:51,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377365903] [2021-12-06 23:58:51,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:58:51,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 23:58:51,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:51,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 23:58:51,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 23:58:51,833 INFO L87 Difference]: Start difference. First operand has 64 states, 43 states have (on average 1.930232558139535) internal successors, (83), 63 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:51,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:51,850 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2021-12-06 23:58:51,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 23:58:51,852 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-06 23:58:51,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:51,860 INFO L225 Difference]: With dead ends: 64 [2021-12-06 23:58:51,860 INFO L226 Difference]: Without dead ends: 62 [2021-12-06 23:58:51,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 23:58:51,864 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:51,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:58:51,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-06 23:58:51,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-12-06 23:58:51,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 42 states have (on average 1.880952380952381) internal successors, (79), 61 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:51,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 79 transitions. [2021-12-06 23:58:51,891 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 79 transitions. Word has length 5 [2021-12-06 23:58:51,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:51,891 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 79 transitions. [2021-12-06 23:58:51,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:51,891 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 79 transitions. [2021-12-06 23:58:51,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 23:58:51,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:51,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:58:51,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:58:51,892 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:58:51,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:51,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1806851052, now seen corresponding path program 1 times [2021-12-06 23:58:51,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:51,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677641119] [2021-12-06 23:58:51,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:51,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:51,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:51,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:51,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677641119] [2021-12-06 23:58:51,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677641119] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:58:51,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:58:51,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:58:51,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043363551] [2021-12-06 23:58:51,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:58:51,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:58:51,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:51,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:58:51,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:58:51,928 INFO L87 Difference]: Start difference. First operand 62 states and 79 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:51,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:51,942 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-12-06 23:58:51,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:58:51,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-06 23:58:51,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:51,943 INFO L225 Difference]: With dead ends: 63 [2021-12-06 23:58:51,944 INFO L226 Difference]: Without dead ends: 63 [2021-12-06 23:58:51,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:58:51,945 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:51,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 151 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:58:51,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-06 23:58:51,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-12-06 23:58:51,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 62 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:51,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 80 transitions. [2021-12-06 23:58:51,952 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 80 transitions. Word has length 7 [2021-12-06 23:58:51,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:51,952 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 80 transitions. [2021-12-06 23:58:51,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:51,953 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 80 transitions. [2021-12-06 23:58:51,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 23:58:51,953 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:51,953 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:58:51,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 23:58:51,954 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:58:51,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:51,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1806910634, now seen corresponding path program 1 times [2021-12-06 23:58:51,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:51,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851988248] [2021-12-06 23:58:51,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:51,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:51,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:51,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851988248] [2021-12-06 23:58:51,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851988248] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:58:51,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:58:51,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:58:51,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142437218] [2021-12-06 23:58:51,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:58:51,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:58:51,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:51,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:58:51,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:58:51,994 INFO L87 Difference]: Start difference. First operand 63 states and 80 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:52,020 INFO L93 Difference]: Finished difference Result 111 states and 145 transitions. [2021-12-06 23:58:52,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:58:52,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-06 23:58:52,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:52,022 INFO L225 Difference]: With dead ends: 111 [2021-12-06 23:58:52,022 INFO L226 Difference]: Without dead ends: 111 [2021-12-06 23:58:52,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:58:52,024 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 62 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:52,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 138 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:58:52,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-12-06 23:58:52,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 93. [2021-12-06 23:58:52,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 73 states have (on average 1.8767123287671232) internal successors, (137), 92 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 137 transitions. [2021-12-06 23:58:52,033 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 137 transitions. Word has length 7 [2021-12-06 23:58:52,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:52,033 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 137 transitions. [2021-12-06 23:58:52,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,033 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 137 transitions. [2021-12-06 23:58:52,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-06 23:58:52,034 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:52,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:58:52,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 23:58:52,034 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:58:52,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:52,034 INFO L85 PathProgramCache]: Analyzing trace with hash 177749355, now seen corresponding path program 1 times [2021-12-06 23:58:52,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:52,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509087563] [2021-12-06 23:58:52,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:52,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:52,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:52,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:52,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509087563] [2021-12-06 23:58:52,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509087563] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:58:52,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:58:52,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:58:52,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716784219] [2021-12-06 23:58:52,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:58:52,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:58:52,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:52,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:58:52,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:58:52,073 INFO L87 Difference]: Start difference. First operand 93 states and 137 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:52,106 INFO L93 Difference]: Finished difference Result 148 states and 212 transitions. [2021-12-06 23:58:52,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:58:52,107 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-06 23:58:52,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:52,108 INFO L225 Difference]: With dead ends: 148 [2021-12-06 23:58:52,108 INFO L226 Difference]: Without dead ends: 148 [2021-12-06 23:58:52,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:58:52,109 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 44 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:52,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 209 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:58:52,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-12-06 23:58:52,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 127. [2021-12-06 23:58:52,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 107 states have (on average 1.841121495327103) internal successors, (197), 126 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 197 transitions. [2021-12-06 23:58:52,120 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 197 transitions. Word has length 8 [2021-12-06 23:58:52,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:52,120 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 197 transitions. [2021-12-06 23:58:52,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,121 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 197 transitions. [2021-12-06 23:58:52,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-06 23:58:52,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:52,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:58:52,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 23:58:52,121 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:58:52,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:52,122 INFO L85 PathProgramCache]: Analyzing trace with hash 179653412, now seen corresponding path program 1 times [2021-12-06 23:58:52,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:52,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219095897] [2021-12-06 23:58:52,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:52,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:52,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:52,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219095897] [2021-12-06 23:58:52,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219095897] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:58:52,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:58:52,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:58:52,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373970952] [2021-12-06 23:58:52,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:58:52,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:58:52,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:52,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:58:52,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:58:52,151 INFO L87 Difference]: Start difference. First operand 127 states and 197 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:52,188 INFO L93 Difference]: Finished difference Result 209 states and 319 transitions. [2021-12-06 23:58:52,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:58:52,188 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-06 23:58:52,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:52,189 INFO L225 Difference]: With dead ends: 209 [2021-12-06 23:58:52,190 INFO L226 Difference]: Without dead ends: 206 [2021-12-06 23:58:52,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:58:52,191 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 63 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:52,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 121 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:58:52,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-12-06 23:58:52,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 185. [2021-12-06 23:58:52,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 165 states have (on average 1.8363636363636364) internal successors, (303), 184 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 303 transitions. [2021-12-06 23:58:52,202 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 303 transitions. Word has length 8 [2021-12-06 23:58:52,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:52,202 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 303 transitions. [2021-12-06 23:58:52,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,203 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 303 transitions. [2021-12-06 23:58:52,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-06 23:58:52,203 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:52,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:58:52,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 23:58:52,203 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:58:52,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:52,204 INFO L85 PathProgramCache]: Analyzing trace with hash 179596397, now seen corresponding path program 1 times [2021-12-06 23:58:52,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:52,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193676338] [2021-12-06 23:58:52,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:52,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:52,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:52,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:52,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:52,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193676338] [2021-12-06 23:58:52,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193676338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:58:52,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:58:52,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:58:52,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056883214] [2021-12-06 23:58:52,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:58:52,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:58:52,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:52,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:58:52,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:58:52,234 INFO L87 Difference]: Start difference. First operand 185 states and 303 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:52,278 INFO L93 Difference]: Finished difference Result 261 states and 411 transitions. [2021-12-06 23:58:52,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:58:52,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-06 23:58:52,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:52,281 INFO L225 Difference]: With dead ends: 261 [2021-12-06 23:58:52,281 INFO L226 Difference]: Without dead ends: 261 [2021-12-06 23:58:52,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:58:52,283 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 67 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:52,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 171 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:58:52,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-12-06 23:58:52,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 240. [2021-12-06 23:58:52,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 222 states have (on average 1.7882882882882882) internal successors, (397), 239 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 397 transitions. [2021-12-06 23:58:52,300 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 397 transitions. Word has length 8 [2021-12-06 23:58:52,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:52,300 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 397 transitions. [2021-12-06 23:58:52,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,300 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 397 transitions. [2021-12-06 23:58:52,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-06 23:58:52,301 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:52,301 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:58:52,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 23:58:52,301 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:58:52,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:52,302 INFO L85 PathProgramCache]: Analyzing trace with hash 179596398, now seen corresponding path program 1 times [2021-12-06 23:58:52,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:52,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224448876] [2021-12-06 23:58:52,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:52,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:52,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:52,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:52,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224448876] [2021-12-06 23:58:52,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224448876] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:58:52,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:58:52,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:58:52,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768792452] [2021-12-06 23:58:52,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:58:52,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:58:52,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:52,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:58:52,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:58:52,347 INFO L87 Difference]: Start difference. First operand 240 states and 397 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:52,385 INFO L93 Difference]: Finished difference Result 256 states and 402 transitions. [2021-12-06 23:58:52,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:58:52,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-06 23:58:52,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:52,387 INFO L225 Difference]: With dead ends: 256 [2021-12-06 23:58:52,387 INFO L226 Difference]: Without dead ends: 256 [2021-12-06 23:58:52,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:58:52,388 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 66 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:52,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 179 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:58:52,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-12-06 23:58:52,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 238. [2021-12-06 23:58:52,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 222 states have (on average 1.7522522522522523) internal successors, (389), 237 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 389 transitions. [2021-12-06 23:58:52,401 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 389 transitions. Word has length 8 [2021-12-06 23:58:52,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:52,401 INFO L470 AbstractCegarLoop]: Abstraction has 238 states and 389 transitions. [2021-12-06 23:58:52,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,401 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 389 transitions. [2021-12-06 23:58:52,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 23:58:52,402 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:52,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:58:52,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 23:58:52,402 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:58:52,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:52,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1272529015, now seen corresponding path program 1 times [2021-12-06 23:58:52,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:52,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838792069] [2021-12-06 23:58:52,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:52,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:52,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:52,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:52,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:52,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838792069] [2021-12-06 23:58:52,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838792069] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:58:52,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:58:52,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:58:52,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934474883] [2021-12-06 23:58:52,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:58:52,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:58:52,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:52,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:58:52,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:58:52,428 INFO L87 Difference]: Start difference. First operand 238 states and 389 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:52,452 INFO L93 Difference]: Finished difference Result 297 states and 423 transitions. [2021-12-06 23:58:52,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:58:52,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-06 23:58:52,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:52,454 INFO L225 Difference]: With dead ends: 297 [2021-12-06 23:58:52,454 INFO L226 Difference]: Without dead ends: 297 [2021-12-06 23:58:52,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:58:52,456 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 105 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:52,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 279 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:58:52,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-12-06 23:58:52,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 195. [2021-12-06 23:58:52,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 183 states have (on average 1.6994535519125684) internal successors, (311), 194 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 311 transitions. [2021-12-06 23:58:52,465 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 311 transitions. Word has length 9 [2021-12-06 23:58:52,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:52,465 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 311 transitions. [2021-12-06 23:58:52,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,465 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 311 transitions. [2021-12-06 23:58:52,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-06 23:58:52,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:52,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:58:52,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 23:58:52,466 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:58:52,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:52,467 INFO L85 PathProgramCache]: Analyzing trace with hash 845049582, now seen corresponding path program 1 times [2021-12-06 23:58:52,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:52,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340033491] [2021-12-06 23:58:52,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:52,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:52,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:52,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:52,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340033491] [2021-12-06 23:58:52,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340033491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:58:52,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:58:52,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:58:52,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366959902] [2021-12-06 23:58:52,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:58:52,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:58:52,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:52,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:58:52,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:58:52,494 INFO L87 Difference]: Start difference. First operand 195 states and 311 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:52,515 INFO L93 Difference]: Finished difference Result 418 states and 615 transitions. [2021-12-06 23:58:52,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:58:52,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-06 23:58:52,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:52,519 INFO L225 Difference]: With dead ends: 418 [2021-12-06 23:58:52,519 INFO L226 Difference]: Without dead ends: 418 [2021-12-06 23:58:52,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:58:52,520 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 107 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:52,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 236 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:58:52,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2021-12-06 23:58:52,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 278. [2021-12-06 23:58:52,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 266 states have (on average 1.6090225563909775) internal successors, (428), 277 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 428 transitions. [2021-12-06 23:58:52,531 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 428 transitions. Word has length 10 [2021-12-06 23:58:52,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:52,531 INFO L470 AbstractCegarLoop]: Abstraction has 278 states and 428 transitions. [2021-12-06 23:58:52,531 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,531 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 428 transitions. [2021-12-06 23:58:52,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 23:58:52,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:52,532 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:58:52,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 23:58:52,533 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:58:52,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:52,533 INFO L85 PathProgramCache]: Analyzing trace with hash 22246394, now seen corresponding path program 1 times [2021-12-06 23:58:52,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:52,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373941254] [2021-12-06 23:58:52,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:52,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:52,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:52,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:52,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373941254] [2021-12-06 23:58:52,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373941254] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:58:52,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037883928] [2021-12-06 23:58:52,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:52,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:52,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:52,571 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:58:52,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:58:52,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:52,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:58:52,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:58:52,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:52,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:58:52,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:52,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037883928] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:58:52,732 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:58:52,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-12-06 23:58:52,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318975099] [2021-12-06 23:58:52,733 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:58:52,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:58:52,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:52,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:58:52,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:58:52,734 INFO L87 Difference]: Start difference. First operand 278 states and 428 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:52,764 INFO L93 Difference]: Finished difference Result 282 states and 418 transitions. [2021-12-06 23:58:52,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:58:52,765 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 23:58:52,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:52,766 INFO L225 Difference]: With dead ends: 282 [2021-12-06 23:58:52,766 INFO L226 Difference]: Without dead ends: 282 [2021-12-06 23:58:52,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:58:52,767 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 231 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:52,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 289 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:58:52,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-12-06 23:58:52,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 274. [2021-12-06 23:58:52,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 262 states have (on average 1.5877862595419847) internal successors, (416), 273 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 416 transitions. [2021-12-06 23:58:52,773 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 416 transitions. Word has length 16 [2021-12-06 23:58:52,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:52,773 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 416 transitions. [2021-12-06 23:58:52,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:52,773 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 416 transitions. [2021-12-06 23:58:52,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 23:58:52,774 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:52,774 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:58:52,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:58:52,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:52,975 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:58:52,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:52,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1902356162, now seen corresponding path program 1 times [2021-12-06 23:58:52,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:52,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843787536] [2021-12-06 23:58:52,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:52,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:53,044 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:53,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:53,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843787536] [2021-12-06 23:58:53,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843787536] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:58:53,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497828336] [2021-12-06 23:58:53,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:53,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:53,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:53,046 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:58:53,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 23:58:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:53,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 23:58:53,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:58:53,123 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:53,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:58:53,160 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:53,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497828336] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:58:53,160 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:58:53,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2021-12-06 23:58:53,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377979782] [2021-12-06 23:58:53,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:58:53,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:58:53,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:53,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:58:53,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:58:53,162 INFO L87 Difference]: Start difference. First operand 274 states and 416 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:53,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:53,206 INFO L93 Difference]: Finished difference Result 613 states and 869 transitions. [2021-12-06 23:58:53,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 23:58:53,207 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 23:58:53,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:53,209 INFO L225 Difference]: With dead ends: 613 [2021-12-06 23:58:53,209 INFO L226 Difference]: Without dead ends: 613 [2021-12-06 23:58:53,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:58:53,210 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 295 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:53,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [295 Valid, 472 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:58:53,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2021-12-06 23:58:53,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 387. [2021-12-06 23:58:53,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 375 states have (on average 1.5333333333333334) internal successors, (575), 386 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:53,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 575 transitions. [2021-12-06 23:58:53,220 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 575 transitions. Word has length 16 [2021-12-06 23:58:53,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:53,220 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 575 transitions. [2021-12-06 23:58:53,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:53,220 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 575 transitions. [2021-12-06 23:58:53,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 23:58:53,221 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:53,221 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-06 23:58:53,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 23:58:53,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:53,422 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:58:53,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:53,422 INFO L85 PathProgramCache]: Analyzing trace with hash 53823374, now seen corresponding path program 2 times [2021-12-06 23:58:53,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:53,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075127691] [2021-12-06 23:58:53,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:53,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:53,457 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 23:58:53,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:53,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075127691] [2021-12-06 23:58:53,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075127691] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:58:53,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364427380] [2021-12-06 23:58:53,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:58:53,457 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:53,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:53,458 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:58:53,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 23:58:53,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:58:53,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:58:53,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 23:58:53,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:58:53,550 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 23:58:53,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:58:53,582 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 23:58:53,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364427380] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:58:53,582 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:58:53,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2021-12-06 23:58:53,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359385233] [2021-12-06 23:58:53,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:58:53,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:58:53,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:53,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:58:53,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:58:53,583 INFO L87 Difference]: Start difference. First operand 387 states and 575 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:53,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:53,623 INFO L93 Difference]: Finished difference Result 783 states and 1115 transitions. [2021-12-06 23:58:53,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:58:53,623 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-06 23:58:53,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:53,626 INFO L225 Difference]: With dead ends: 783 [2021-12-06 23:58:53,626 INFO L226 Difference]: Without dead ends: 783 [2021-12-06 23:58:53,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:58:53,627 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 222 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:53,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 381 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:58:53,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2021-12-06 23:58:53,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 387. [2021-12-06 23:58:53,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 375 states have (on average 1.5333333333333334) internal successors, (575), 386 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:53,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 575 transitions. [2021-12-06 23:58:53,636 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 575 transitions. Word has length 22 [2021-12-06 23:58:53,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:53,636 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 575 transitions. [2021-12-06 23:58:53,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:53,636 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 575 transitions. [2021-12-06 23:58:53,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 23:58:53,637 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:53,637 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:58:53,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 23:58:53,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 23:58:53,839 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:58:53,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:53,840 INFO L85 PathProgramCache]: Analyzing trace with hash -2107196217, now seen corresponding path program 1 times [2021-12-06 23:58:53,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:53,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590305923] [2021-12-06 23:58:53,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:53,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:53,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:53,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590305923] [2021-12-06 23:58:53,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590305923] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:58:53,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114923620] [2021-12-06 23:58:53,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:53,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:53,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:53,962 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:58:53,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 23:58:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:54,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 23:58:54,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:58:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:54,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:58:54,139 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:54,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114923620] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:58:54,139 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:58:54,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2021-12-06 23:58:54,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040045420] [2021-12-06 23:58:54,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:58:54,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:58:54,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:54,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:58:54,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:58:54,140 INFO L87 Difference]: Start difference. First operand 387 states and 575 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:54,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:54,197 INFO L93 Difference]: Finished difference Result 927 states and 1355 transitions. [2021-12-06 23:58:54,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:58:54,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-06 23:58:54,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:54,203 INFO L225 Difference]: With dead ends: 927 [2021-12-06 23:58:54,203 INFO L226 Difference]: Without dead ends: 927 [2021-12-06 23:58:54,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:58:54,204 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 173 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:54,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 163 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:58:54,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 927 states. [2021-12-06 23:58:54,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 927 to 806. [2021-12-06 23:58:54,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 794 states have (on average 1.5176322418136021) internal successors, (1205), 805 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:54,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1205 transitions. [2021-12-06 23:58:54,227 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1205 transitions. Word has length 24 [2021-12-06 23:58:54,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:54,227 INFO L470 AbstractCegarLoop]: Abstraction has 806 states and 1205 transitions. [2021-12-06 23:58:54,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:54,227 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1205 transitions. [2021-12-06 23:58:54,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 23:58:54,228 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:54,228 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:58:54,248 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 23:58:54,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 23:58:54,429 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:58:54,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:54,429 INFO L85 PathProgramCache]: Analyzing trace with hash -6965384, now seen corresponding path program 1 times [2021-12-06 23:58:54,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:54,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488052139] [2021-12-06 23:58:54,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:54,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:54,465 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:54,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:54,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488052139] [2021-12-06 23:58:54,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488052139] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:58:54,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98777855] [2021-12-06 23:58:54,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:54,465 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:54,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:54,466 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:58:54,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 23:58:54,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:54,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 23:58:54,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:58:54,554 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:54,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:58:54,599 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:54,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98777855] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:58:54,599 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:58:54,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-12-06 23:58:54,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064734082] [2021-12-06 23:58:54,600 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:58:54,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 23:58:54,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:54,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 23:58:54,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:58:54,601 INFO L87 Difference]: Start difference. First operand 806 states and 1205 transitions. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:54,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:54,692 INFO L93 Difference]: Finished difference Result 2802 states and 3965 transitions. [2021-12-06 23:58:54,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 23:58:54,692 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-06 23:58:54,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:54,703 INFO L225 Difference]: With dead ends: 2802 [2021-12-06 23:58:54,703 INFO L226 Difference]: Without dead ends: 2802 [2021-12-06 23:58:54,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:58:54,703 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 606 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:54,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 547 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:58:54,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2021-12-06 23:58:54,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 1874. [2021-12-06 23:58:54,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1874 states, 1862 states have (on average 1.4677765843179378) internal successors, (2733), 1873 states have internal predecessors, (2733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:54,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1874 states to 1874 states and 2733 transitions. [2021-12-06 23:58:54,753 INFO L78 Accepts]: Start accepts. Automaton has 1874 states and 2733 transitions. Word has length 27 [2021-12-06 23:58:54,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:54,753 INFO L470 AbstractCegarLoop]: Abstraction has 1874 states and 2733 transitions. [2021-12-06 23:58:54,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:54,754 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 2733 transitions. [2021-12-06 23:58:54,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 23:58:54,754 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:54,755 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:58:54,775 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 23:58:54,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 23:58:54,955 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:58:54,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:54,956 INFO L85 PathProgramCache]: Analyzing trace with hash 334990594, now seen corresponding path program 1 times [2021-12-06 23:58:54,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:54,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217669771] [2021-12-06 23:58:54,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:54,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:55,000 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:58:55,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:55,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217669771] [2021-12-06 23:58:55,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217669771] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:58:55,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572345571] [2021-12-06 23:58:55,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:55,001 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:55,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:55,002 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:58:55,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 23:58:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:55,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 23:58:55,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:58:55,105 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:58:55,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:58:55,152 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 23:58:55,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572345571] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:58:55,153 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:58:55,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2021-12-06 23:58:55,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288397537] [2021-12-06 23:58:55,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:58:55,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:58:55,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:55,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:58:55,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:58:55,154 INFO L87 Difference]: Start difference. First operand 1874 states and 2733 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:55,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:55,200 INFO L93 Difference]: Finished difference Result 4064 states and 5713 transitions. [2021-12-06 23:58:55,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:58:55,200 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-06 23:58:55,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:55,215 INFO L225 Difference]: With dead ends: 4064 [2021-12-06 23:58:55,215 INFO L226 Difference]: Without dead ends: 4064 [2021-12-06 23:58:55,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:58:55,216 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 281 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:55,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 622 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:58:55,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4064 states. [2021-12-06 23:58:55,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4064 to 2397. [2021-12-06 23:58:55,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2397 states, 2385 states have (on average 1.450733752620545) internal successors, (3460), 2396 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:55,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2397 states to 2397 states and 3460 transitions. [2021-12-06 23:58:55,258 INFO L78 Accepts]: Start accepts. Automaton has 2397 states and 3460 transitions. Word has length 27 [2021-12-06 23:58:55,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:55,258 INFO L470 AbstractCegarLoop]: Abstraction has 2397 states and 3460 transitions. [2021-12-06 23:58:55,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:55,258 INFO L276 IsEmpty]: Start isEmpty. Operand 2397 states and 3460 transitions. [2021-12-06 23:58:55,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 23:58:55,259 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:55,259 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:58:55,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 23:58:55,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 23:58:55,460 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:58:55,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:55,460 INFO L85 PathProgramCache]: Analyzing trace with hash -543060814, now seen corresponding path program 2 times [2021-12-06 23:58:55,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:55,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080163903] [2021-12-06 23:58:55,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:55,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:55,559 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 23:58:55,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:55,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080163903] [2021-12-06 23:58:55,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080163903] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:58:55,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386763895] [2021-12-06 23:58:55,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:58:55,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:55,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:55,562 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:58:55,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 23:58:55,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:58:55,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:58:55,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 23:58:55,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:58:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:55,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:58:55,723 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:55,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386763895] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:58:55,724 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:58:55,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 9 [2021-12-06 23:58:55,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343848656] [2021-12-06 23:58:55,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:58:55,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 23:58:55,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:55,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 23:58:55,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:58:55,725 INFO L87 Difference]: Start difference. First operand 2397 states and 3460 transitions. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:55,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:55,785 INFO L93 Difference]: Finished difference Result 1506 states and 2063 transitions. [2021-12-06 23:58:55,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:58:55,785 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-06 23:58:55,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:55,791 INFO L225 Difference]: With dead ends: 1506 [2021-12-06 23:58:55,791 INFO L226 Difference]: Without dead ends: 1506 [2021-12-06 23:58:55,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:58:55,791 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 366 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:55,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 1359 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:58:55,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2021-12-06 23:58:55,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1071. [2021-12-06 23:58:55,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1059 states have (on average 1.3918791312559018) internal successors, (1474), 1070 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:55,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1474 transitions. [2021-12-06 23:58:55,806 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1474 transitions. Word has length 33 [2021-12-06 23:58:55,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:55,807 INFO L470 AbstractCegarLoop]: Abstraction has 1071 states and 1474 transitions. [2021-12-06 23:58:55,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:55,807 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1474 transitions. [2021-12-06 23:58:55,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-06 23:58:55,807 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:55,808 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:58:55,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 23:58:56,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:56,008 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:58:56,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:56,008 INFO L85 PathProgramCache]: Analyzing trace with hash 2001409998, now seen corresponding path program 1 times [2021-12-06 23:58:56,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:56,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561282191] [2021-12-06 23:58:56,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:56,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:56,057 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 23:58:56,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:56,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561282191] [2021-12-06 23:58:56,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561282191] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:58:56,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179957283] [2021-12-06 23:58:56,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:56,057 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:56,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:56,058 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:58:56,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 23:58:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:56,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 23:58:56,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:58:56,196 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 19 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:56,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:58:56,267 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 19 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:58:56,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179957283] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:58:56,268 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:58:56,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 13 [2021-12-06 23:58:56,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088736046] [2021-12-06 23:58:56,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:58:56,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 23:58:56,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:56,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 23:58:56,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:58:56,269 INFO L87 Difference]: Start difference. First operand 1071 states and 1474 transitions. Second operand has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:56,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:56,489 INFO L93 Difference]: Finished difference Result 2964 states and 3883 transitions. [2021-12-06 23:58:56,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 23:58:56,489 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-12-06 23:58:56,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:56,503 INFO L225 Difference]: With dead ends: 2964 [2021-12-06 23:58:56,503 INFO L226 Difference]: Without dead ends: 2964 [2021-12-06 23:58:56,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 103 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=252, Invalid=618, Unknown=0, NotChecked=0, Total=870 [2021-12-06 23:58:56,504 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 1239 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:56,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1239 Valid, 841 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:58:56,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2021-12-06 23:58:56,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 1192. [2021-12-06 23:58:56,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 1180 states have (on average 1.4076271186440679) internal successors, (1661), 1191 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:56,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1661 transitions. [2021-12-06 23:58:56,535 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1661 transitions. Word has length 51 [2021-12-06 23:58:56,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:56,535 INFO L470 AbstractCegarLoop]: Abstraction has 1192 states and 1661 transitions. [2021-12-06 23:58:56,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 13 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:56,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1661 transitions. [2021-12-06 23:58:56,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 23:58:56,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:56,537 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:58:56,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 23:58:56,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 23:58:56,738 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:58:56,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:56,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1426339750, now seen corresponding path program 1 times [2021-12-06 23:58:56,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:56,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025534349] [2021-12-06 23:58:56,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:56,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:56,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:56,898 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 65 proven. 3 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-06 23:58:56,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:56,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025534349] [2021-12-06 23:58:56,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025534349] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:58:56,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347989762] [2021-12-06 23:58:56,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:56,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:56,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:56,900 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:58:56,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 23:58:56,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:56,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:58:56,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:58:57,032 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 92 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 23:58:57,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:58:57,101 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 23:58:57,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347989762] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 23:58:57,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:58:57,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 13 [2021-12-06 23:58:57,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29919811] [2021-12-06 23:58:57,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:58:57,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:58:57,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:57,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:58:57,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:58:57,103 INFO L87 Difference]: Start difference. First operand 1192 states and 1661 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:57,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:57,168 INFO L93 Difference]: Finished difference Result 2804 states and 3777 transitions. [2021-12-06 23:58:57,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:58:57,169 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-12-06 23:58:57,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:57,181 INFO L225 Difference]: With dead ends: 2804 [2021-12-06 23:58:57,181 INFO L226 Difference]: Without dead ends: 2804 [2021-12-06 23:58:57,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 113 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:58:57,181 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 225 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:57,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 456 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:58:57,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2804 states. [2021-12-06 23:58:57,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2804 to 1984. [2021-12-06 23:58:57,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1984 states, 1972 states have (on average 1.383367139959432) internal successors, (2728), 1983 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:57,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1984 states to 1984 states and 2728 transitions. [2021-12-06 23:58:57,218 INFO L78 Accepts]: Start accepts. Automaton has 1984 states and 2728 transitions. Word has length 59 [2021-12-06 23:58:57,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:57,218 INFO L470 AbstractCegarLoop]: Abstraction has 1984 states and 2728 transitions. [2021-12-06 23:58:57,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:57,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1984 states and 2728 transitions. [2021-12-06 23:58:57,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-06 23:58:57,220 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:57,220 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:58:57,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-06 23:58:57,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 23:58:57,422 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:58:57,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:57,423 INFO L85 PathProgramCache]: Analyzing trace with hash -443713253, now seen corresponding path program 1 times [2021-12-06 23:58:57,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:57,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883635730] [2021-12-06 23:58:57,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:57,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:57,537 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 27 proven. 49 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-06 23:58:57,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:57,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883635730] [2021-12-06 23:58:57,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883635730] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:58:57,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60344005] [2021-12-06 23:58:57,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:57,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:57,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:57,539 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:58:57,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 23:58:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:57,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:58:57,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:58:57,663 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 71 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 23:58:57,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:58:57,721 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 71 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-12-06 23:58:57,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60344005] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:58:57,721 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:58:57,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 12 [2021-12-06 23:58:57,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919607188] [2021-12-06 23:58:57,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:58:57,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 23:58:57,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:57,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 23:58:57,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:58:57,723 INFO L87 Difference]: Start difference. First operand 1984 states and 2728 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:58,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:58,384 INFO L93 Difference]: Finished difference Result 11156 states and 14869 transitions. [2021-12-06 23:58:58,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-12-06 23:58:58,384 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-12-06 23:58:58,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:58,419 INFO L225 Difference]: With dead ends: 11156 [2021-12-06 23:58:58,419 INFO L226 Difference]: Without dead ends: 11156 [2021-12-06 23:58:58,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 726 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=631, Invalid=2021, Unknown=0, NotChecked=0, Total=2652 [2021-12-06 23:58:58,420 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 1085 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 774 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:58,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1085 Valid, 774 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 23:58:58,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11156 states. [2021-12-06 23:58:58,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11156 to 5817. [2021-12-06 23:58:58,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5817 states, 5806 states have (on average 1.3847743713399931) internal successors, (8040), 5816 states have internal predecessors, (8040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:58,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5817 states to 5817 states and 8040 transitions. [2021-12-06 23:58:58,504 INFO L78 Accepts]: Start accepts. Automaton has 5817 states and 8040 transitions. Word has length 59 [2021-12-06 23:58:58,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:58,504 INFO L470 AbstractCegarLoop]: Abstraction has 5817 states and 8040 transitions. [2021-12-06 23:58:58,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:58,504 INFO L276 IsEmpty]: Start isEmpty. Operand 5817 states and 8040 transitions. [2021-12-06 23:58:58,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 23:58:58,505 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:58,505 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:58:58,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 23:58:58,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:58,707 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:58:58,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:58,709 INFO L85 PathProgramCache]: Analyzing trace with hash -791217300, now seen corresponding path program 1 times [2021-12-06 23:58:58,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:58,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140678534] [2021-12-06 23:58:58,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:58,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:58,788 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 68 proven. 4 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-06 23:58:58,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:58,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140678534] [2021-12-06 23:58:58,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140678534] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:58:58,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327172698] [2021-12-06 23:58:58,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:58,789 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:58,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:58,790 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:58:58,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 23:58:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:58,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 23:58:58,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:58:58,925 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 101 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 23:58:58,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:58:58,986 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 103 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-06 23:58:58,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327172698] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:58:58,986 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:58:58,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 14 [2021-12-06 23:58:58,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524057078] [2021-12-06 23:58:58,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:58:58,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 23:58:58,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:58,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 23:58:58,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:58:58,987 INFO L87 Difference]: Start difference. First operand 5817 states and 8040 transitions. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:59,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:58:59,294 INFO L93 Difference]: Finished difference Result 12879 states and 17221 transitions. [2021-12-06 23:58:59,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 23:58:59,295 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-06 23:58:59,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:58:59,309 INFO L225 Difference]: With dead ends: 12879 [2021-12-06 23:58:59,309 INFO L226 Difference]: Without dead ends: 12879 [2021-12-06 23:58:59,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 394 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=407, Invalid=1233, Unknown=0, NotChecked=0, Total=1640 [2021-12-06 23:58:59,310 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 1263 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1263 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:58:59,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1263 Valid, 1188 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:58:59,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12879 states. [2021-12-06 23:58:59,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12879 to 5567. [2021-12-06 23:58:59,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5567 states, 5556 states have (on average 1.357631389488841) internal successors, (7543), 5566 states have internal predecessors, (7543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:59,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5567 states to 5567 states and 7543 transitions. [2021-12-06 23:58:59,398 INFO L78 Accepts]: Start accepts. Automaton has 5567 states and 7543 transitions. Word has length 63 [2021-12-06 23:58:59,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:58:59,398 INFO L470 AbstractCegarLoop]: Abstraction has 5567 states and 7543 transitions. [2021-12-06 23:58:59,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 14 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:58:59,398 INFO L276 IsEmpty]: Start isEmpty. Operand 5567 states and 7543 transitions. [2021-12-06 23:58:59,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 23:58:59,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:58:59,399 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:58:59,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-06 23:58:59,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:59,601 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:58:59,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:58:59,602 INFO L85 PathProgramCache]: Analyzing trace with hash 767429099, now seen corresponding path program 1 times [2021-12-06 23:58:59,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:58:59,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622359300] [2021-12-06 23:58:59,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:59,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:58:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:59,682 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 72 proven. 14 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-12-06 23:58:59,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:58:59,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622359300] [2021-12-06 23:58:59,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622359300] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:58:59,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788793053] [2021-12-06 23:58:59,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:58:59,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:58:59,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:58:59,683 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:58:59,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 23:58:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:58:59,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-06 23:58:59,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:58:59,806 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 52 proven. 38 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 23:58:59,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:58:59,857 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 52 proven. 38 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-06 23:58:59,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788793053] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:58:59,857 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:58:59,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2021-12-06 23:58:59,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405680108] [2021-12-06 23:58:59,857 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:58:59,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 23:58:59,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:58:59,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 23:58:59,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:58:59,858 INFO L87 Difference]: Start difference. First operand 5567 states and 7543 transitions. Second operand has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:00,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:00,004 INFO L93 Difference]: Finished difference Result 4783 states and 6068 transitions. [2021-12-06 23:59:00,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 23:59:00,004 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-12-06 23:59:00,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:00,010 INFO L225 Difference]: With dead ends: 4783 [2021-12-06 23:59:00,010 INFO L226 Difference]: Without dead ends: 4783 [2021-12-06 23:59:00,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2021-12-06 23:59:00,011 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 735 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:00,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 1766 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:59:00,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4783 states. [2021-12-06 23:59:00,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4783 to 3593. [2021-12-06 23:59:00,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3593 states, 3582 states have (on average 1.2733109994416527) internal successors, (4561), 3592 states have internal predecessors, (4561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:00,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 4561 transitions. [2021-12-06 23:59:00,052 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 4561 transitions. Word has length 63 [2021-12-06 23:59:00,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:00,052 INFO L470 AbstractCegarLoop]: Abstraction has 3593 states and 4561 transitions. [2021-12-06 23:59:00,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.428571428571429) internal successors, (90), 14 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:00,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 4561 transitions. [2021-12-06 23:59:00,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-06 23:59:00,053 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:00,053 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:00,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-06 23:59:00,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-06 23:59:00,254 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:00,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:00,254 INFO L85 PathProgramCache]: Analyzing trace with hash 965172541, now seen corresponding path program 1 times [2021-12-06 23:59:00,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:59:00,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504466629] [2021-12-06 23:59:00,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:00,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:59:00,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:00,322 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-06 23:59:00,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:59:00,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504466629] [2021-12-06 23:59:00,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504466629] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:59:00,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707055903] [2021-12-06 23:59:00,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:00,323 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:59:00,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:59:00,324 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:59:00,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 23:59:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:00,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:59:00,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:00,448 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-06 23:59:00,449 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:00,508 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-06 23:59:00,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707055903] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:59:00,508 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:59:00,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2021-12-06 23:59:00,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943802948] [2021-12-06 23:59:00,508 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:00,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:59:00,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:59:00,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:59:00,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:59:00,509 INFO L87 Difference]: Start difference. First operand 3593 states and 4561 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:00,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:00,553 INFO L93 Difference]: Finished difference Result 3585 states and 4518 transitions. [2021-12-06 23:59:00,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:59:00,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-12-06 23:59:00,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:00,557 INFO L225 Difference]: With dead ends: 3585 [2021-12-06 23:59:00,557 INFO L226 Difference]: Without dead ends: 3585 [2021-12-06 23:59:00,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:59:00,558 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 107 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:00,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 253 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:59:00,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3585 states. [2021-12-06 23:59:00,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3585 to 3578. [2021-12-06 23:59:00,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3578 states, 3567 states have (on average 1.266049901878329) internal successors, (4516), 3577 states have internal predecessors, (4516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:00,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3578 states to 3578 states and 4516 transitions. [2021-12-06 23:59:00,605 INFO L78 Accepts]: Start accepts. Automaton has 3578 states and 4516 transitions. Word has length 64 [2021-12-06 23:59:00,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:00,605 INFO L470 AbstractCegarLoop]: Abstraction has 3578 states and 4516 transitions. [2021-12-06 23:59:00,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:00,605 INFO L276 IsEmpty]: Start isEmpty. Operand 3578 states and 4516 transitions. [2021-12-06 23:59:00,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 23:59:00,606 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:00,606 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:00,626 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 23:59:00,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-06 23:59:00,807 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:00,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:00,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1737502264, now seen corresponding path program 1 times [2021-12-06 23:59:00,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:59:00,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366615951] [2021-12-06 23:59:00,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:00,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:59:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 89 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 23:59:00,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:59:00,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366615951] [2021-12-06 23:59:00,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366615951] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:59:00,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771457733] [2021-12-06 23:59:00,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:00,896 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:59:00,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:59:00,896 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:59:00,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 23:59:00,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:00,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 23:59:00,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:01,074 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 95 proven. 15 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 23:59:01,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:01,176 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 97 proven. 13 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 23:59:01,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771457733] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:59:01,176 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:59:01,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2021-12-06 23:59:01,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220258034] [2021-12-06 23:59:01,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:01,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 23:59:01,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:59:01,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 23:59:01,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:59:01,178 INFO L87 Difference]: Start difference. First operand 3578 states and 4516 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:01,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:01,361 INFO L93 Difference]: Finished difference Result 4945 states and 6261 transitions. [2021-12-06 23:59:01,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:59:01,362 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-12-06 23:59:01,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:01,364 INFO L225 Difference]: With dead ends: 4945 [2021-12-06 23:59:01,364 INFO L226 Difference]: Without dead ends: 4945 [2021-12-06 23:59:01,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 128 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2021-12-06 23:59:01,365 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 333 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:01,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 874 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:59:01,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4945 states. [2021-12-06 23:59:01,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4945 to 2688. [2021-12-06 23:59:01,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2688 states, 2677 states have (on average 1.2618602913709376) internal successors, (3378), 2687 states have internal predecessors, (3378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:01,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2688 states to 2688 states and 3378 transitions. [2021-12-06 23:59:01,395 INFO L78 Accepts]: Start accepts. Automaton has 2688 states and 3378 transitions. Word has length 65 [2021-12-06 23:59:01,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:01,395 INFO L470 AbstractCegarLoop]: Abstraction has 2688 states and 3378 transitions. [2021-12-06 23:59:01,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:01,396 INFO L276 IsEmpty]: Start isEmpty. Operand 2688 states and 3378 transitions. [2021-12-06 23:59:01,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-06 23:59:01,396 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:01,396 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:01,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-12-06 23:59:01,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:59:01,597 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:01,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:01,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1937207539, now seen corresponding path program 1 times [2021-12-06 23:59:01,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:59:01,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635316940] [2021-12-06 23:59:01,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:01,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:59:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:01,703 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-06 23:59:01,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:59:01,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635316940] [2021-12-06 23:59:01,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635316940] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:59:01,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251946730] [2021-12-06 23:59:01,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:01,704 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:59:01,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:59:01,705 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:59:01,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 23:59:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:01,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 23:59:01,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:01,927 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-06 23:59:01,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:02,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-12-06 23:59:02,152 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 32 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-12-06 23:59:02,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251946730] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:59:02,153 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:59:02,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 9 [2021-12-06 23:59:02,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452122517] [2021-12-06 23:59:02,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:02,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 23:59:02,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:59:02,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 23:59:02,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:59:02,154 INFO L87 Difference]: Start difference. First operand 2688 states and 3378 transitions. Second operand has 10 states, 9 states have (on average 9.0) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:02,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:02,305 INFO L93 Difference]: Finished difference Result 4265 states and 5260 transitions. [2021-12-06 23:59:02,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:59:02,305 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 9.0) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-06 23:59:02,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:02,307 INFO L225 Difference]: With dead ends: 4265 [2021-12-06 23:59:02,307 INFO L226 Difference]: Without dead ends: 4265 [2021-12-06 23:59:02,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 136 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-12-06 23:59:02,308 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 471 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:02,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [471 Valid, 416 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:59:02,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4265 states. [2021-12-06 23:59:02,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4265 to 3554. [2021-12-06 23:59:02,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 3543 states have (on average 1.2514817950889077) internal successors, (4434), 3553 states have internal predecessors, (4434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:02,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 4434 transitions. [2021-12-06 23:59:02,340 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 4434 transitions. Word has length 69 [2021-12-06 23:59:02,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:02,341 INFO L470 AbstractCegarLoop]: Abstraction has 3554 states and 4434 transitions. [2021-12-06 23:59:02,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 9.0) internal successors, (81), 10 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:02,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 4434 transitions. [2021-12-06 23:59:02,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-06 23:59:02,342 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:02,342 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 8, 6, 6, 5, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:02,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-06 23:59:02,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:59:02,543 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:02,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:02,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1779624174, now seen corresponding path program 1 times [2021-12-06 23:59:02,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:59:02,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933025698] [2021-12-06 23:59:02,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:02,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:59:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:02,623 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-12-06 23:59:02,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:59:02,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933025698] [2021-12-06 23:59:02,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933025698] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:59:02,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34884946] [2021-12-06 23:59:02,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:02,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:59:02,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:59:02,624 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:59:02,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 23:59:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:02,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 23:59:02,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:02,821 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 29 proven. 65 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-12-06 23:59:02,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:02,900 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 29 proven. 65 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-12-06 23:59:02,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34884946] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:59:02,900 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 23:59:02,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 12 [2021-12-06 23:59:02,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838837612] [2021-12-06 23:59:02,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:02,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 23:59:02,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:59:02,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 23:59:02,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:59:02,901 INFO L87 Difference]: Start difference. First operand 3554 states and 4434 transitions. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 12 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:02,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:02,991 INFO L93 Difference]: Finished difference Result 4956 states and 5896 transitions. [2021-12-06 23:59:02,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:59:02,991 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 12 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2021-12-06 23:59:02,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:02,994 INFO L225 Difference]: With dead ends: 4956 [2021-12-06 23:59:02,994 INFO L226 Difference]: Without dead ends: 4956 [2021-12-06 23:59:02,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2021-12-06 23:59:02,995 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 855 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:02,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [855 Valid, 1203 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:59:02,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4956 states. [2021-12-06 23:59:03,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4956 to 3055. [2021-12-06 23:59:03,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3055 states, 3045 states have (on average 1.213136288998358) internal successors, (3694), 3054 states have internal predecessors, (3694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:03,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3055 states to 3055 states and 3694 transitions. [2021-12-06 23:59:03,021 INFO L78 Accepts]: Start accepts. Automaton has 3055 states and 3694 transitions. Word has length 88 [2021-12-06 23:59:03,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:03,022 INFO L470 AbstractCegarLoop]: Abstraction has 3055 states and 3694 transitions. [2021-12-06 23:59:03,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 12 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:03,022 INFO L276 IsEmpty]: Start isEmpty. Operand 3055 states and 3694 transitions. [2021-12-06 23:59:03,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 23:59:03,023 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:03,023 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 9, 6, 6, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:03,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-06 23:59:03,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-06 23:59:03,224 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:03,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:03,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1011471400, now seen corresponding path program 1 times [2021-12-06 23:59:03,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:59:03,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757604393] [2021-12-06 23:59:03,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:03,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:59:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:59:03,245 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:59:03,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:59:03,285 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 23:59:03,285 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 23:59:03,286 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2021-12-06 23:59:03,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (18 of 20 remaining) [2021-12-06 23:59:03,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (17 of 20 remaining) [2021-12-06 23:59:03,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (16 of 20 remaining) [2021-12-06 23:59:03,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (15 of 20 remaining) [2021-12-06 23:59:03,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (14 of 20 remaining) [2021-12-06 23:59:03,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (13 of 20 remaining) [2021-12-06 23:59:03,287 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (12 of 20 remaining) [2021-12-06 23:59:03,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (11 of 20 remaining) [2021-12-06 23:59:03,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (10 of 20 remaining) [2021-12-06 23:59:03,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (9 of 20 remaining) [2021-12-06 23:59:03,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (8 of 20 remaining) [2021-12-06 23:59:03,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (7 of 20 remaining) [2021-12-06 23:59:03,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (6 of 20 remaining) [2021-12-06 23:59:03,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (5 of 20 remaining) [2021-12-06 23:59:03,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (4 of 20 remaining) [2021-12-06 23:59:03,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (3 of 20 remaining) [2021-12-06 23:59:03,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2021-12-06 23:59:03,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2021-12-06 23:59:03,288 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2021-12-06 23:59:03,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 23:59:03,291 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:03,293 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 23:59:03,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 11:59:03 BoogieIcfgContainer [2021-12-06 23:59:03,352 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 23:59:03,352 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 23:59:03,352 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 23:59:03,352 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 23:59:03,353 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:58:51" (3/4) ... [2021-12-06 23:59:03,355 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 23:59:03,355 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 23:59:03,355 INFO L158 Benchmark]: Toolchain (without parser) took 12516.60ms. Allocated memory was 90.2MB in the beginning and 201.3MB in the end (delta: 111.1MB). Free memory was 54.9MB in the beginning and 66.2MB in the end (delta: -11.3MB). Peak memory consumption was 100.9MB. Max. memory is 16.1GB. [2021-12-06 23:59:03,355 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 90.2MB. Free memory was 63.8MB in the beginning and 63.8MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:59:03,355 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.54ms. Allocated memory is still 90.2MB. Free memory was 54.6MB in the beginning and 59.0MB in the end (delta: -4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-06 23:59:03,356 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.40ms. Allocated memory is still 90.2MB. Free memory was 59.0MB in the beginning and 56.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:59:03,356 INFO L158 Benchmark]: Boogie Preprocessor took 29.85ms. Allocated memory is still 90.2MB. Free memory was 56.9MB in the beginning and 55.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:59:03,356 INFO L158 Benchmark]: RCFGBuilder took 338.49ms. Allocated memory is still 90.2MB. Free memory was 55.3MB in the beginning and 40.1MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-12-06 23:59:03,356 INFO L158 Benchmark]: TraceAbstraction took 11747.36ms. Allocated memory was 90.2MB in the beginning and 201.3MB in the end (delta: 111.1MB). Free memory was 39.7MB in the beginning and 67.3MB in the end (delta: -27.5MB). Peak memory consumption was 84.4MB. Max. memory is 16.1GB. [2021-12-06 23:59:03,356 INFO L158 Benchmark]: Witness Printer took 2.52ms. Allocated memory is still 201.3MB. Free memory was 67.3MB in the beginning and 66.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:59:03,357 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 90.2MB. Free memory was 63.8MB in the beginning and 63.8MB in the end (delta: 21.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.54ms. Allocated memory is still 90.2MB. Free memory was 54.6MB in the beginning and 59.0MB in the end (delta: -4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.40ms. Allocated memory is still 90.2MB. Free memory was 59.0MB in the beginning and 56.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.85ms. Allocated memory is still 90.2MB. Free memory was 56.9MB in the beginning and 55.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 338.49ms. Allocated memory is still 90.2MB. Free memory was 55.3MB in the beginning and 40.1MB in the end (delta: 15.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 11747.36ms. Allocated memory was 90.2MB in the beginning and 201.3MB in the end (delta: 111.1MB). Free memory was 39.7MB in the beginning and 67.3MB in the end (delta: -27.5MB). Peak memory consumption was 84.4MB. Max. memory is 16.1GB. * Witness Printer took 2.52ms. Allocated memory is still 201.3MB. Free memory was 67.3MB in the beginning and 66.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 592]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 592. Possible FailurePath: [L528] struct cell *S; [L529] int pc1 = 1; [L530] int pc4 = 1; [L531] static struct cell *t1 = ((void *)0); [L532] static struct cell *x1 = ((void *)0); [L561] struct cell* garbage; [L562] static struct cell *t4 = ((void *)0); [L563] static struct cell *x4 = ((void *)0); [L566] static int res4; VAL [garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] S || 1 != pc1 || __VERIFIER_nondet_int() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=-1, garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, S || 1 != pc1 || __VERIFIER_nondet_int()=1, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L537] x1 = malloc(sizeof(*x1)) [L538] x1->data = 0 VAL [garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L539] x1->next = ((void *)0) VAL [garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [garbage={0:0}, pc1=2, pc4=1, res4=0, S={0:0}, S || 1 != pc1 || __VERIFIER_nondet_int()=1, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: VAL [garbage={0:0}, pc1=3, pc1++=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L542] x1->data = 4 VAL [garbage={0:0}, pc1=3, pc1++=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [garbage={0:0}, pc1=3, pc4=1, res4=0, S={0:0}, S || 1 != pc1 || __VERIFIER_nondet_int()=1, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L545] t1 = S VAL [garbage={0:0}, pc1=4, pc1++=3, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [garbage={0:0}, pc1=4, pc4=1, res4=0, S={0:0}, S || 1 != pc1 || __VERIFIER_nondet_int()=1, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L547] case 4: VAL [garbage={0:0}, pc1=5, pc1++=4, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L548] x1->next = t1 VAL [garbage={0:0}, pc1=5, pc1++=4, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [garbage={0:0}, pc1=5, pc4=1, res4=0, S={0:0}, S || 1 != pc1 || __VERIFIER_nondet_int()=1, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L547] case 4: [L550] case 5: VAL [garbage={0:0}, pc1=6, pc1++=5, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L551] COND TRUE S == t1 [L552] S = x1 VAL [garbage={0:0}, pc1=6, pc1++=5, pc4=1, res4=0, S={-2:0}, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [garbage={0:0}, pc1=6, pc4=1, res4=0, S={-2:0}, S || 1 != pc1 || __VERIFIER_nondet_int()=1, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L547] case 4: [L550] case 5: [L556] case 6: [L557] pc1 = 1 VAL [garbage={0:0}, pc1=1, pc1++=6, pc4=1, res4=0, S={-2:0}, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L596] RET push() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [garbage={0:0}, pc1=1, pc4=1, res4=0, S={-2:0}, S || 1 != pc1 || __VERIFIER_nondet_int()=1, t1={0:0}, t4={0:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L569] t4 = S VAL [garbage={0:0}, pc1=1, pc4=2, pc4++=1, res4=0, S={-2:0}, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [garbage={0:0}, pc1=1, pc4=2, res4=0, S={-2:0}, S || 1 != pc1 || __VERIFIER_nondet_int()=1, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: VAL [garbage={0:0}, pc1=1, pc4=3, pc4++=2, res4=0, S={-2:0}, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L572] COND FALSE !(t4 == ((void *)0)) VAL [garbage={0:0}, pc1=1, pc4=3, pc4++=2, res4=0, S={-2:0}, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [garbage={0:0}, pc1=1, pc4=3, res4=0, S={-2:0}, S || 1 != pc1 || __VERIFIER_nondet_int()=1, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: [L575] case 3: VAL [garbage={0:0}, pc1=1, pc4=4, pc4++=3, res4=0, S={-2:0}, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L576] EXPR t4->next VAL [garbage={0:0}, pc1=1, pc4=4, pc4++=3, res4=0, S={-2:0}, t1={0:0}, t4={-2:0}, t4->next={0:0}, x1={-2:0}, x4={0:0}] [L576] x4 = t4->next [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [garbage={0:0}, pc1=1, pc4=4, res4=0, S={-2:0}, S || 1 != pc1 || __VERIFIER_nondet_int()=1, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: [L575] case 3: [L578] case 4: VAL [garbage={0:0}, pc1=1, pc4=5, pc4++=4, res4=0, S={-2:0}, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L579] COND TRUE S == t4 [L580] S = x4 VAL [garbage={0:0}, pc1=1, pc4=5, pc4++=4, res4=0, S={0:0}, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L598] RET pop() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() [L594] S || 1 != pc1 || __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, garbage={0:0}, pc1=1, pc4=5, res4=0, S={0:0}, S || 1 != pc1 || __VERIFIER_nondet_int()=0, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L594] COND FALSE !(S || 1 != pc1 || __VERIFIER_nondet_int()) [L600] COND FALSE !(\read(*garbage)) VAL [garbage={0:0}, pc1=1, pc4=5, res4=0, S={0:0}, t1={0:0}, t4={-2:0}, x1={-2:0}, x4={0:0}] [L605] S = ((void *)0) [L606] t1 = ((void *)0) [L607] x1 = ((void *)0) [L608] t4 = ((void *)0) [L609] x4 = ((void *)0) [L610] return !!garbage; VAL [\result=0, garbage={0:0}, pc1=1, pc4=5, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 64 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 11.6s, OverallIterations: 26, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9001 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9001 mSDsluCounter, 13169 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9908 mSDsCounter, 549 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2415 IncrementalHoareTripleChecker+Invalid, 2964 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 549 mSolverCounterUnsat, 3261 mSDtfsCounter, 2415 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1823 GetRequests, 1509 SyntacticMatches, 18 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1768 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5817occurred in iteration=19, InterpolantAutomatonStates: 265, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 25 MinimizatonAttempts, 25431 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 1660 NumberOfCodeBlocks, 1660 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 2251 ConstructedInterpolants, 0 QuantifiedInterpolants, 7063 SizeOfPredicates, 71 NumberOfNonLiveVariables, 3410 ConjunctsInSsa, 157 ConjunctsInUnsatCore, 57 InterpolantComputations, 10 PerfectInterpolantSequences, 2982/3858 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-06 23:59:03,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/lockfree-3.3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1db117ae3c729419255b5da4a7f4ecd64b2d99a167d11f22266a773c4ff13cdb --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:59:05,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:59:05,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:59:05,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:59:05,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:59:05,103 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:59:05,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:59:05,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:59:05,108 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:59:05,109 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:59:05,110 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:59:05,111 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:59:05,111 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:59:05,112 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:59:05,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:59:05,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:59:05,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:59:05,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:59:05,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:59:05,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:59:05,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:59:05,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:59:05,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:59:05,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:59:05,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:59:05,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:59:05,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:59:05,129 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:59:05,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:59:05,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:59:05,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:59:05,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:59:05,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:59:05,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:59:05,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:59:05,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:59:05,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:59:05,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:59:05,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:59:05,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:59:05,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:59:05,136 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-06 23:59:05,162 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:59:05,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:59:05,162 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:59:05,162 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:59:05,163 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:59:05,163 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:59:05,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:59:05,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:59:05,164 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:59:05,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:59:05,165 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:59:05,165 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 23:59:05,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:59:05,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:59:05,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:59:05,165 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 23:59:05,166 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 23:59:05,166 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 23:59:05,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:59:05,166 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 23:59:05,166 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 23:59:05,166 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 23:59:05,166 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:59:05,166 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:59:05,167 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:59:05,167 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:59:05,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:59:05,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:59:05,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:59:05,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:59:05,167 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 23:59:05,167 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 23:59:05,167 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:59:05,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 23:59:05,168 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1db117ae3c729419255b5da4a7f4ecd64b2d99a167d11f22266a773c4ff13cdb [2021-12-06 23:59:05,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:59:05,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:59:05,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:59:05,421 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:59:05,421 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:59:05,422 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/memsafety/lockfree-3.3.i [2021-12-06 23:59:05,464 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/data/bc16b5680/fe190df4212b4880af29fe703baf3083/FLAG4534bbb3c [2021-12-06 23:59:05,824 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:59:05,825 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/sv-benchmarks/c/memsafety/lockfree-3.3.i [2021-12-06 23:59:05,835 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/data/bc16b5680/fe190df4212b4880af29fe703baf3083/FLAG4534bbb3c [2021-12-06 23:59:06,184 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/data/bc16b5680/fe190df4212b4880af29fe703baf3083 [2021-12-06 23:59:06,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:59:06,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:59:06,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:59:06,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:59:06,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:59:06,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:59:06" (1/1) ... [2021-12-06 23:59:06,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@96b76af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:06, skipping insertion in model container [2021-12-06 23:59:06,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:59:06" (1/1) ... [2021-12-06 23:59:06,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:59:06,231 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:59:06,443 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:59:06,452 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:59:06,484 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:59:06,508 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:59:06,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:06 WrapperNode [2021-12-06 23:59:06,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:59:06,510 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:59:06,510 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:59:06,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:59:06,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:06" (1/1) ... [2021-12-06 23:59:06,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:06" (1/1) ... [2021-12-06 23:59:06,545 INFO L137 Inliner]: procedures = 128, calls = 18, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 119 [2021-12-06 23:59:06,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:59:06,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:59:06,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:59:06,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:59:06,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:06" (1/1) ... [2021-12-06 23:59:06,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:06" (1/1) ... [2021-12-06 23:59:06,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:06" (1/1) ... [2021-12-06 23:59:06,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:06" (1/1) ... [2021-12-06 23:59:06,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:06" (1/1) ... [2021-12-06 23:59:06,565 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:06" (1/1) ... [2021-12-06 23:59:06,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:06" (1/1) ... [2021-12-06 23:59:06,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:59:06,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:59:06,570 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:59:06,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:59:06,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:06" (1/1) ... [2021-12-06 23:59:06,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:59:06,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:59:06,595 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:59:06,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:59:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 23:59:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 23:59:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:59:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 23:59:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 23:59:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 23:59:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 23:59:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 23:59:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:59:06,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:59:06,710 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:59:06,711 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:59:06,973 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:59:06,978 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:59:06,978 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 23:59:06,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:59:06 BoogieIcfgContainer [2021-12-06 23:59:06,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:59:06,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:59:06,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:59:06,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:59:06,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:59:06" (1/3) ... [2021-12-06 23:59:06,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563c0df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:59:06, skipping insertion in model container [2021-12-06 23:59:06,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:59:06" (2/3) ... [2021-12-06 23:59:06,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@563c0df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:59:06, skipping insertion in model container [2021-12-06 23:59:06,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:59:06" (3/3) ... [2021-12-06 23:59:06,989 INFO L111 eAbstractionObserver]: Analyzing ICFG lockfree-3.3.i [2021-12-06 23:59:06,993 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:59:06,993 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2021-12-06 23:59:07,025 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:59:07,030 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 [2021-12-06 23:59:07,030 INFO L340 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2021-12-06 23:59:07,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 41 states have (on average 1.951219512195122) internal successors, (80), 61 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:07,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-06 23:59:07,046 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:07,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-06 23:59:07,046 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:07,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:07,050 INFO L85 PathProgramCache]: Analyzing trace with hash 28701640, now seen corresponding path program 1 times [2021-12-06 23:59:07,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:07,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654827524] [2021-12-06 23:59:07,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:07,060 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:07,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:07,061 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:07,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 23:59:07,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:07,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:59:07,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:07,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:07,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:59:07,170 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:59:07,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [654827524] [2021-12-06 23:59:07,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [654827524] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:59:07,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:59:07,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:59:07,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059216763] [2021-12-06 23:59:07,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:59:07,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:59:07,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:59:07,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:59:07,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:59:07,202 INFO L87 Difference]: Start difference. First operand has 62 states, 41 states have (on average 1.951219512195122) internal successors, (80), 61 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:07,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:07,263 INFO L93 Difference]: Finished difference Result 107 states and 139 transitions. [2021-12-06 23:59:07,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:59:07,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-12-06 23:59:07,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:07,276 INFO L225 Difference]: With dead ends: 107 [2021-12-06 23:59:07,276 INFO L226 Difference]: Without dead ends: 105 [2021-12-06 23:59:07,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:59:07,281 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 63 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:07,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 134 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:59:07,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2021-12-06 23:59:07,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 87. [2021-12-06 23:59:07,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 67 states have (on average 1.9253731343283582) internal successors, (129), 86 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:07,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 129 transitions. [2021-12-06 23:59:07,318 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 129 transitions. Word has length 5 [2021-12-06 23:59:07,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:07,318 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 129 transitions. [2021-12-06 23:59:07,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:07,318 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 129 transitions. [2021-12-06 23:59:07,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 23:59:07,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:07,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 23:59:07,326 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:59:07,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:07,521 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:07,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:07,524 INFO L85 PathProgramCache]: Analyzing trace with hash 889749439, now seen corresponding path program 1 times [2021-12-06 23:59:07,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:07,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486600077] [2021-12-06 23:59:07,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:07,527 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:07,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:07,530 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:07,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 23:59:07,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:07,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 23:59:07,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:07,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:07,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:59:07,631 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:59:07,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486600077] [2021-12-06 23:59:07,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486600077] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:59:07,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:59:07,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:59:07,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415484396] [2021-12-06 23:59:07,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:59:07,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:59:07,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:59:07,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:59:07,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:59:07,634 INFO L87 Difference]: Start difference. First operand 87 states and 129 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:07,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:07,725 INFO L93 Difference]: Finished difference Result 163 states and 243 transitions. [2021-12-06 23:59:07,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:59:07,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 23:59:07,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:07,729 INFO L225 Difference]: With dead ends: 163 [2021-12-06 23:59:07,729 INFO L226 Difference]: Without dead ends: 160 [2021-12-06 23:59:07,729 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:59:07,731 INFO L933 BasicCegarLoop]: 62 mSDtfsCounter, 62 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:07,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 116 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:59:07,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-12-06 23:59:07,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 140. [2021-12-06 23:59:07,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 120 states have (on average 1.9083333333333334) internal successors, (229), 139 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:07,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 229 transitions. [2021-12-06 23:59:07,749 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 229 transitions. Word has length 6 [2021-12-06 23:59:07,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:07,749 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 229 transitions. [2021-12-06 23:59:07,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:07,750 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 229 transitions. [2021-12-06 23:59:07,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 23:59:07,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:07,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 23:59:07,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 23:59:07,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:07,952 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:07,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:07,954 INFO L85 PathProgramCache]: Analyzing trace with hash 889692424, now seen corresponding path program 1 times [2021-12-06 23:59:07,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:07,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300758429] [2021-12-06 23:59:07,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:07,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:07,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:07,959 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:07,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 23:59:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:08,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:59:08,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:08,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 23:59:08,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:08,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:59:08,075 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:59:08,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300758429] [2021-12-06 23:59:08,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300758429] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:59:08,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:59:08,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:59:08,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654634184] [2021-12-06 23:59:08,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:59:08,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:59:08,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:59:08,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:59:08,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:59:08,077 INFO L87 Difference]: Start difference. First operand 140 states and 229 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:08,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:08,191 INFO L93 Difference]: Finished difference Result 211 states and 330 transitions. [2021-12-06 23:59:08,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:59:08,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 23:59:08,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:08,194 INFO L225 Difference]: With dead ends: 211 [2021-12-06 23:59:08,194 INFO L226 Difference]: Without dead ends: 211 [2021-12-06 23:59:08,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:59:08,196 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 64 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:08,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 163 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:59:08,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-12-06 23:59:08,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 190. [2021-12-06 23:59:08,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 172 states have (on average 1.8372093023255813) internal successors, (316), 189 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:08,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 316 transitions. [2021-12-06 23:59:08,212 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 316 transitions. Word has length 6 [2021-12-06 23:59:08,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:08,212 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 316 transitions. [2021-12-06 23:59:08,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:08,213 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 316 transitions. [2021-12-06 23:59:08,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 23:59:08,213 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:08,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 23:59:08,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-06 23:59:08,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:08,415 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:08,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:08,417 INFO L85 PathProgramCache]: Analyzing trace with hash 889692425, now seen corresponding path program 1 times [2021-12-06 23:59:08,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:08,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932523846] [2021-12-06 23:59:08,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:08,419 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:08,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:08,422 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:08,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 23:59:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:08,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:59:08,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:08,519 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 23:59:08,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:08,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:59:08,527 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:59:08,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932523846] [2021-12-06 23:59:08,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932523846] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:59:08,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:59:08,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:59:08,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604747796] [2021-12-06 23:59:08,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:59:08,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 23:59:08,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:59:08,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 23:59:08,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:59:08,528 INFO L87 Difference]: Start difference. First operand 190 states and 316 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:08,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:08,650 INFO L93 Difference]: Finished difference Result 206 states and 321 transitions. [2021-12-06 23:59:08,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 23:59:08,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 23:59:08,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:08,652 INFO L225 Difference]: With dead ends: 206 [2021-12-06 23:59:08,652 INFO L226 Difference]: Without dead ends: 206 [2021-12-06 23:59:08,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 23:59:08,654 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 63 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:08,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 169 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:59:08,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-12-06 23:59:08,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 188. [2021-12-06 23:59:08,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 172 states have (on average 1.7906976744186047) internal successors, (308), 187 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:08,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 308 transitions. [2021-12-06 23:59:08,667 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 308 transitions. Word has length 6 [2021-12-06 23:59:08,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:08,668 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 308 transitions. [2021-12-06 23:59:08,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:08,668 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 308 transitions. [2021-12-06 23:59:08,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-06 23:59:08,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:08,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:08,678 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 23:59:08,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:08,873 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:08,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:08,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1810669365, now seen corresponding path program 1 times [2021-12-06 23:59:08,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:08,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104172212] [2021-12-06 23:59:08,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:08,875 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:08,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:08,877 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:08,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 23:59:08,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:08,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:59:08,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:08,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:08,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:59:08,934 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:59:08,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104172212] [2021-12-06 23:59:08,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104172212] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:59:08,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:59:08,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:59:08,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172939378] [2021-12-06 23:59:08,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:59:08,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:59:08,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:59:08,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:59:08,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:59:08,936 INFO L87 Difference]: Start difference. First operand 188 states and 308 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:08,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:08,969 INFO L93 Difference]: Finished difference Result 211 states and 304 transitions. [2021-12-06 23:59:08,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:59:08,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-06 23:59:08,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:08,970 INFO L225 Difference]: With dead ends: 211 [2021-12-06 23:59:08,971 INFO L226 Difference]: Without dead ends: 211 [2021-12-06 23:59:08,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:59:08,972 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 101 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:08,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 229 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:59:08,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-12-06 23:59:08,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 144. [2021-12-06 23:59:08,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 132 states have (on average 1.7348484848484849) internal successors, (229), 143 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:08,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 229 transitions. [2021-12-06 23:59:08,980 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 229 transitions. Word has length 7 [2021-12-06 23:59:08,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:08,980 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 229 transitions. [2021-12-06 23:59:08,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:08,981 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 229 transitions. [2021-12-06 23:59:08,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-06 23:59:08,981 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:08,981 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:08,988 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 23:59:09,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:09,183 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:09,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:09,184 INFO L85 PathProgramCache]: Analyzing trace with hash 347531241, now seen corresponding path program 1 times [2021-12-06 23:59:09,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:09,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019603161] [2021-12-06 23:59:09,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:09,186 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:09,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:09,189 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:09,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 23:59:09,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:09,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:59:09,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:09,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:09,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 23:59:09,270 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:59:09,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019603161] [2021-12-06 23:59:09,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019603161] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:59:09,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:59:09,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 23:59:09,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115971297] [2021-12-06 23:59:09,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:59:09,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:59:09,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:59:09,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:59:09,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:59:09,272 INFO L87 Difference]: Start difference. First operand 144 states and 229 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:09,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:09,291 INFO L93 Difference]: Finished difference Result 303 states and 449 transitions. [2021-12-06 23:59:09,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:59:09,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-06 23:59:09,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:09,293 INFO L225 Difference]: With dead ends: 303 [2021-12-06 23:59:09,293 INFO L226 Difference]: Without dead ends: 303 [2021-12-06 23:59:09,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:59:09,294 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 103 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 221 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:09,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 221 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:59:09,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2021-12-06 23:59:09,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 198. [2021-12-06 23:59:09,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 186 states have (on average 1.6559139784946237) internal successors, (308), 197 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:09,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 308 transitions. [2021-12-06 23:59:09,300 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 308 transitions. Word has length 8 [2021-12-06 23:59:09,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:09,300 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 308 transitions. [2021-12-06 23:59:09,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:09,300 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 308 transitions. [2021-12-06 23:59:09,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 23:59:09,301 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:09,301 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:09,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 23:59:09,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:09,502 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:09,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:09,504 INFO L85 PathProgramCache]: Analyzing trace with hash -527615340, now seen corresponding path program 1 times [2021-12-06 23:59:09,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:09,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267978322] [2021-12-06 23:59:09,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:09,506 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:09,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:09,507 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:09,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 23:59:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:09,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:59:09,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:09,587 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:09,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:09,610 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:09,610 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:59:09,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267978322] [2021-12-06 23:59:09,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267978322] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:59:09,610 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:59:09,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-12-06 23:59:09,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180362928] [2021-12-06 23:59:09,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:09,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:59:09,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:59:09,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:59:09,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:59:09,611 INFO L87 Difference]: Start difference. First operand 198 states and 308 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:09,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:09,664 INFO L93 Difference]: Finished difference Result 513 states and 746 transitions. [2021-12-06 23:59:09,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:59:09,664 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 23:59:09,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:09,667 INFO L225 Difference]: With dead ends: 513 [2021-12-06 23:59:09,667 INFO L226 Difference]: Without dead ends: 513 [2021-12-06 23:59:09,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:59:09,668 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 262 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:09,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 578 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:59:09,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-12-06 23:59:09,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 258. [2021-12-06 23:59:09,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 246 states have (on average 1.6219512195121952) internal successors, (399), 257 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:09,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 399 transitions. [2021-12-06 23:59:09,677 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 399 transitions. Word has length 12 [2021-12-06 23:59:09,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:09,678 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 399 transitions. [2021-12-06 23:59:09,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:09,678 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 399 transitions. [2021-12-06 23:59:09,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 23:59:09,678 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:09,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:09,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 23:59:09,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:09,880 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:09,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:09,881 INFO L85 PathProgramCache]: Analyzing trace with hash 2027186576, now seen corresponding path program 1 times [2021-12-06 23:59:09,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:09,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723762159] [2021-12-06 23:59:09,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:09,883 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:09,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:09,886 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:09,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 23:59:09,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:09,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 23:59:09,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:09,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:10,019 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:10,020 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:59:10,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723762159] [2021-12-06 23:59:10,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723762159] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:59:10,020 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:59:10,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-12-06 23:59:10,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600716378] [2021-12-06 23:59:10,020 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:10,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:59:10,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:59:10,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:59:10,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:59:10,021 INFO L87 Difference]: Start difference. First operand 258 states and 399 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:10,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:10,048 INFO L93 Difference]: Finished difference Result 600 states and 891 transitions. [2021-12-06 23:59:10,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:59:10,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-06 23:59:10,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:10,051 INFO L225 Difference]: With dead ends: 600 [2021-12-06 23:59:10,051 INFO L226 Difference]: Without dead ends: 600 [2021-12-06 23:59:10,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:59:10,052 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 244 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:10,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 298 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:59:10,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-12-06 23:59:10,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 576. [2021-12-06 23:59:10,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 564 states have (on average 1.5797872340425532) internal successors, (891), 575 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:10,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 891 transitions. [2021-12-06 23:59:10,064 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 891 transitions. Word has length 12 [2021-12-06 23:59:10,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:10,064 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 891 transitions. [2021-12-06 23:59:10,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:10,064 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 891 transitions. [2021-12-06 23:59:10,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-06 23:59:10,065 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:10,065 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:10,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 23:59:10,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:10,267 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:10,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:10,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1582579647, now seen corresponding path program 2 times [2021-12-06 23:59:10,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:10,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11441664] [2021-12-06 23:59:10,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:59:10,270 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:10,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:10,272 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:10,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 23:59:10,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:59:10,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:59:10,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:59:10,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:10,379 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:10,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:10,408 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:10,408 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:59:10,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11441664] [2021-12-06 23:59:10,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11441664] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:59:10,409 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:59:10,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-12-06 23:59:10,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405954143] [2021-12-06 23:59:10,409 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:10,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:59:10,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:59:10,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:59:10,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:59:10,410 INFO L87 Difference]: Start difference. First operand 576 states and 891 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:10,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:10,465 INFO L93 Difference]: Finished difference Result 1062 states and 1609 transitions. [2021-12-06 23:59:10,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:59:10,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-06 23:59:10,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:10,470 INFO L225 Difference]: With dead ends: 1062 [2021-12-06 23:59:10,470 INFO L226 Difference]: Without dead ends: 1062 [2021-12-06 23:59:10,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:59:10,470 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 246 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:10,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 442 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:59:10,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2021-12-06 23:59:10,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 968. [2021-12-06 23:59:10,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 956 states have (on average 1.5658995815899581) internal successors, (1497), 967 states have internal predecessors, (1497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:10,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1497 transitions. [2021-12-06 23:59:10,488 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1497 transitions. Word has length 16 [2021-12-06 23:59:10,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:10,488 INFO L470 AbstractCegarLoop]: Abstraction has 968 states and 1497 transitions. [2021-12-06 23:59:10,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:10,488 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1497 transitions. [2021-12-06 23:59:10,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 23:59:10,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:10,489 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:10,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-06 23:59:10,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:10,691 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:10,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:10,692 INFO L85 PathProgramCache]: Analyzing trace with hash -480845608, now seen corresponding path program 1 times [2021-12-06 23:59:10,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:10,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747814736] [2021-12-06 23:59:10,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:10,694 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:10,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:10,696 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:10,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 23:59:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:10,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:59:10,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:10,814 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:10,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:10,865 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:59:10,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747814736] [2021-12-06 23:59:10,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [747814736] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:59:10,865 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:59:10,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-12-06 23:59:10,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650236257] [2021-12-06 23:59:10,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:10,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:59:10,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:59:10,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:59:10,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:59:10,867 INFO L87 Difference]: Start difference. First operand 968 states and 1497 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:10,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:10,928 INFO L93 Difference]: Finished difference Result 1241 states and 1858 transitions. [2021-12-06 23:59:10,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:59:10,928 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-06 23:59:10,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:10,935 INFO L225 Difference]: With dead ends: 1241 [2021-12-06 23:59:10,936 INFO L226 Difference]: Without dead ends: 1241 [2021-12-06 23:59:10,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:59:10,937 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 98 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:10,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 165 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:59:10,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2021-12-06 23:59:10,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1100. [2021-12-06 23:59:10,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 1088 states have (on average 1.525735294117647) internal successors, (1660), 1099 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:10,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1660 transitions. [2021-12-06 23:59:10,961 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1660 transitions. Word has length 18 [2021-12-06 23:59:10,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:10,961 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 1660 transitions. [2021-12-06 23:59:10,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:10,961 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1660 transitions. [2021-12-06 23:59:10,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-06 23:59:10,962 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:10,962 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:10,969 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-06 23:59:11,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:11,164 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:11,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:11,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1323238580, now seen corresponding path program 1 times [2021-12-06 23:59:11,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:11,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [863489053] [2021-12-06 23:59:11,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:11,166 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:11,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:11,168 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:11,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 23:59:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:11,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:59:11,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:11,387 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:11,388 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:11,414 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:11,414 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:59:11,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [863489053] [2021-12-06 23:59:11,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [863489053] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:59:11,414 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:59:11,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-12-06 23:59:11,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311674941] [2021-12-06 23:59:11,415 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:11,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 23:59:11,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:59:11,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 23:59:11,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 23:59:11,415 INFO L87 Difference]: Start difference. First operand 1100 states and 1660 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:11,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:11,475 INFO L93 Difference]: Finished difference Result 1384 states and 2014 transitions. [2021-12-06 23:59:11,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 23:59:11,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-06 23:59:11,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:11,480 INFO L225 Difference]: With dead ends: 1384 [2021-12-06 23:59:11,480 INFO L226 Difference]: Without dead ends: 1384 [2021-12-06 23:59:11,481 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:59:11,481 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 201 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:11,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 539 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:59:11,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1384 states. [2021-12-06 23:59:11,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1384 to 1009. [2021-12-06 23:59:11,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 997 states have (on average 1.4954864593781345) internal successors, (1491), 1008 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:11,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1491 transitions. [2021-12-06 23:59:11,501 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1491 transitions. Word has length 21 [2021-12-06 23:59:11,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:11,501 INFO L470 AbstractCegarLoop]: Abstraction has 1009 states and 1491 transitions. [2021-12-06 23:59:11,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:11,501 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1491 transitions. [2021-12-06 23:59:11,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 23:59:11,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:11,502 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:11,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-06 23:59:11,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:11,703 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:11,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:11,703 INFO L85 PathProgramCache]: Analyzing trace with hash -2034622781, now seen corresponding path program 2 times [2021-12-06 23:59:11,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:11,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451799608] [2021-12-06 23:59:11,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:59:11,704 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:11,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:11,704 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:11,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 23:59:11,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:59:11,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:59:11,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 23:59:11,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:11,802 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:59:11,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:59:11,843 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:59:11,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451799608] [2021-12-06 23:59:11,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451799608] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:59:11,843 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:59:11,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-12-06 23:59:11,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843506014] [2021-12-06 23:59:11,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:11,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:59:11,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:59:11,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:59:11,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:59:11,845 INFO L87 Difference]: Start difference. First operand 1009 states and 1491 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:11,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:11,900 INFO L93 Difference]: Finished difference Result 994 states and 1426 transitions. [2021-12-06 23:59:11,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:59:11,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-06 23:59:11,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:11,906 INFO L225 Difference]: With dead ends: 994 [2021-12-06 23:59:11,906 INFO L226 Difference]: Without dead ends: 994 [2021-12-06 23:59:11,906 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:59:11,907 INFO L933 BasicCegarLoop]: 140 mSDtfsCounter, 172 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:11,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 522 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:59:11,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2021-12-06 23:59:11,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 970. [2021-12-06 23:59:11,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 958 states have (on average 1.488517745302714) internal successors, (1426), 969 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:11,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1426 transitions. [2021-12-06 23:59:11,930 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1426 transitions. Word has length 27 [2021-12-06 23:59:11,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:11,930 INFO L470 AbstractCegarLoop]: Abstraction has 970 states and 1426 transitions. [2021-12-06 23:59:11,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:11,930 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1426 transitions. [2021-12-06 23:59:11,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 23:59:11,931 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:11,931 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:11,944 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-06 23:59:12,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:12,131 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:12,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:12,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1432941687, now seen corresponding path program 1 times [2021-12-06 23:59:12,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:12,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [971102113] [2021-12-06 23:59:12,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:12,133 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:12,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:12,133 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:12,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-06 23:59:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:12,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:59:12,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:12,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:12,268 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:12,269 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:59:12,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [971102113] [2021-12-06 23:59:12,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [971102113] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:59:12,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:59:12,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-12-06 23:59:12,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61048604] [2021-12-06 23:59:12,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:12,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:59:12,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:59:12,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:59:12,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:59:12,270 INFO L87 Difference]: Start difference. First operand 970 states and 1426 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:12,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:12,354 INFO L93 Difference]: Finished difference Result 1049 states and 1476 transitions. [2021-12-06 23:59:12,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 23:59:12,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-06 23:59:12,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:12,360 INFO L225 Difference]: With dead ends: 1049 [2021-12-06 23:59:12,360 INFO L226 Difference]: Without dead ends: 1049 [2021-12-06 23:59:12,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:59:12,361 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 233 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:12,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 808 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:59:12,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2021-12-06 23:59:12,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 892. [2021-12-06 23:59:12,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 892 states, 880 states have (on average 1.4579545454545455) internal successors, (1283), 891 states have internal predecessors, (1283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:12,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1283 transitions. [2021-12-06 23:59:12,388 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1283 transitions. Word has length 27 [2021-12-06 23:59:12,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:12,388 INFO L470 AbstractCegarLoop]: Abstraction has 892 states and 1283 transitions. [2021-12-06 23:59:12,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:12,389 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1283 transitions. [2021-12-06 23:59:12,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 23:59:12,389 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:12,389 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:12,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-12-06 23:59:12,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:12,590 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:12,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:12,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1945741357, now seen corresponding path program 1 times [2021-12-06 23:59:12,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:12,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252165995] [2021-12-06 23:59:12,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:12,591 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:12,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:12,592 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:12,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-06 23:59:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:12,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 23:59:12,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:12,717 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:12,717 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:12,951 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:12,952 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:59:12,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252165995] [2021-12-06 23:59:12,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252165995] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:59:12,952 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:59:12,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2021-12-06 23:59:12,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330225930] [2021-12-06 23:59:12,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:12,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 23:59:12,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:59:12,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 23:59:12,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:59:12,954 INFO L87 Difference]: Start difference. First operand 892 states and 1283 transitions. Second operand has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:13,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:13,239 INFO L93 Difference]: Finished difference Result 1882 states and 2645 transitions. [2021-12-06 23:59:13,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 23:59:13,239 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-06 23:59:13,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:13,249 INFO L225 Difference]: With dead ends: 1882 [2021-12-06 23:59:13,250 INFO L226 Difference]: Without dead ends: 1882 [2021-12-06 23:59:13,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2021-12-06 23:59:13,251 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 603 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:13,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 1455 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:59:13,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2021-12-06 23:59:13,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1834. [2021-12-06 23:59:13,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1822 states have (on average 1.451701427003293) internal successors, (2645), 1833 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:13,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2645 transitions. [2021-12-06 23:59:13,287 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2645 transitions. Word has length 30 [2021-12-06 23:59:13,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:13,287 INFO L470 AbstractCegarLoop]: Abstraction has 1834 states and 2645 transitions. [2021-12-06 23:59:13,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.857142857142857) internal successors, (54), 13 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:13,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2645 transitions. [2021-12-06 23:59:13,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 23:59:13,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:13,289 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:13,296 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-06 23:59:13,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:13,489 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:13,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:13,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1575281728, now seen corresponding path program 1 times [2021-12-06 23:59:13,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:13,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643874008] [2021-12-06 23:59:13,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:13,491 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:13,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:13,492 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:13,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-06 23:59:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:13,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 23:59:13,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:13,734 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:13,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:13,781 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:13,781 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:59:13,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643874008] [2021-12-06 23:59:13,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643874008] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:59:13,781 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:59:13,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-12-06 23:59:13,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732800335] [2021-12-06 23:59:13,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:13,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:59:13,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:59:13,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:59:13,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:59:13,783 INFO L87 Difference]: Start difference. First operand 1834 states and 2645 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:13,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:13,883 INFO L93 Difference]: Finished difference Result 2281 states and 3229 transitions. [2021-12-06 23:59:13,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 23:59:13,883 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-12-06 23:59:13,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:13,891 INFO L225 Difference]: With dead ends: 2281 [2021-12-06 23:59:13,892 INFO L226 Difference]: Without dead ends: 2281 [2021-12-06 23:59:13,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:59:13,893 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 274 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:13,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 1139 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:59:13,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2281 states. [2021-12-06 23:59:13,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2281 to 1782. [2021-12-06 23:59:13,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1782 states, 1770 states have (on average 1.435593220338983) internal successors, (2541), 1781 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:13,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1782 states to 1782 states and 2541 transitions. [2021-12-06 23:59:13,919 INFO L78 Accepts]: Start accepts. Automaton has 1782 states and 2541 transitions. Word has length 33 [2021-12-06 23:59:13,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:13,919 INFO L470 AbstractCegarLoop]: Abstraction has 1782 states and 2541 transitions. [2021-12-06 23:59:13,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:13,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1782 states and 2541 transitions. [2021-12-06 23:59:13,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 23:59:13,920 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:13,920 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:13,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-12-06 23:59:14,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:14,121 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:14,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:14,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1822753242, now seen corresponding path program 1 times [2021-12-06 23:59:14,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:14,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1702672665] [2021-12-06 23:59:14,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:14,123 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:14,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:14,124 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:14,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-06 23:59:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:14,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 23:59:14,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:14,324 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 9 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:14,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:14,377 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 9 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 23:59:14,377 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:59:14,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1702672665] [2021-12-06 23:59:14,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1702672665] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:59:14,377 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:59:14,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-12-06 23:59:14,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639672020] [2021-12-06 23:59:14,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:14,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:59:14,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:59:14,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:59:14,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:59:14,379 INFO L87 Difference]: Start difference. First operand 1782 states and 2541 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:14,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:14,500 INFO L93 Difference]: Finished difference Result 2267 states and 3177 transitions. [2021-12-06 23:59:14,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 23:59:14,500 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-12-06 23:59:14,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:14,508 INFO L225 Difference]: With dead ends: 2267 [2021-12-06 23:59:14,508 INFO L226 Difference]: Without dead ends: 2267 [2021-12-06 23:59:14,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-12-06 23:59:14,509 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 340 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:14,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [340 Valid, 1561 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:59:14,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2021-12-06 23:59:14,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 1756. [2021-12-06 23:59:14,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1756 states, 1744 states have (on average 1.427178899082569) internal successors, (2489), 1755 states have internal predecessors, (2489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:14,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1756 states to 1756 states and 2489 transitions. [2021-12-06 23:59:14,539 INFO L78 Accepts]: Start accepts. Automaton has 1756 states and 2489 transitions. Word has length 41 [2021-12-06 23:59:14,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:14,539 INFO L470 AbstractCegarLoop]: Abstraction has 1756 states and 2489 transitions. [2021-12-06 23:59:14,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:14,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1756 states and 2489 transitions. [2021-12-06 23:59:14,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-06 23:59:14,540 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:14,540 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:14,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-12-06 23:59:14,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:14,741 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:14,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:14,743 INFO L85 PathProgramCache]: Analyzing trace with hash 685518324, now seen corresponding path program 2 times [2021-12-06 23:59:14,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:14,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506273036] [2021-12-06 23:59:14,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:59:14,745 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:14,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:14,748 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:14,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-06 23:59:14,879 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:59:14,879 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:59:14,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 23:59:14,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:14,970 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 38 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:59:14,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:15,311 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 38 proven. 46 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 23:59:15,311 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:59:15,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506273036] [2021-12-06 23:59:15,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506273036] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:59:15,311 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:59:15,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2021-12-06 23:59:15,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437260058] [2021-12-06 23:59:15,312 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:15,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 23:59:15,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:59:15,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 23:59:15,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:59:15,312 INFO L87 Difference]: Start difference. First operand 1756 states and 2489 transitions. Second operand has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:15,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:15,683 INFO L93 Difference]: Finished difference Result 2042 states and 2804 transitions. [2021-12-06 23:59:15,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 23:59:15,683 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-12-06 23:59:15,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:15,690 INFO L225 Difference]: With dead ends: 2042 [2021-12-06 23:59:15,690 INFO L226 Difference]: Without dead ends: 2042 [2021-12-06 23:59:15,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=237, Invalid=819, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 23:59:15,691 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 738 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 2048 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:15,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 2048 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:59:15,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2042 states. [2021-12-06 23:59:15,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2042 to 1982. [2021-12-06 23:59:15,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1982 states, 1970 states have (on average 1.4233502538071066) internal successors, (2804), 1981 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:15,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 2804 transitions. [2021-12-06 23:59:15,716 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 2804 transitions. Word has length 49 [2021-12-06 23:59:15,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:15,716 INFO L470 AbstractCegarLoop]: Abstraction has 1982 states and 2804 transitions. [2021-12-06 23:59:15,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.764705882352941) internal successors, (81), 16 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:15,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 2804 transitions. [2021-12-06 23:59:15,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-06 23:59:15,717 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:15,717 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:15,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-06 23:59:15,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:15,918 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:15,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:15,920 INFO L85 PathProgramCache]: Analyzing trace with hash 34201258, now seen corresponding path program 1 times [2021-12-06 23:59:15,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:15,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099726481] [2021-12-06 23:59:15,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:15,922 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:15,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:15,924 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:15,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-06 23:59:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:16,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 23:59:16,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:16,099 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 23:59:16,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:16,152 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 16 proven. 34 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-06 23:59:16,152 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:59:16,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099726481] [2021-12-06 23:59:16,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099726481] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:59:16,152 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:59:16,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-12-06 23:59:16,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334292162] [2021-12-06 23:59:16,153 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:16,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 23:59:16,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:59:16,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 23:59:16,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 23:59:16,153 INFO L87 Difference]: Start difference. First operand 1982 states and 2804 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:16,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:16,229 INFO L93 Difference]: Finished difference Result 3702 states and 5276 transitions. [2021-12-06 23:59:16,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 23:59:16,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-12-06 23:59:16,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:16,243 INFO L225 Difference]: With dead ends: 3702 [2021-12-06 23:59:16,243 INFO L226 Difference]: Without dead ends: 3702 [2021-12-06 23:59:16,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:59:16,243 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 114 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:16,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 155 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:59:16,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3702 states. [2021-12-06 23:59:16,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3702 to 3060. [2021-12-06 23:59:16,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3060 states, 3048 states have (on average 1.4337270341207349) internal successors, (4370), 3059 states have internal predecessors, (4370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:16,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3060 states to 3060 states and 4370 transitions. [2021-12-06 23:59:16,282 INFO L78 Accepts]: Start accepts. Automaton has 3060 states and 4370 transitions. Word has length 50 [2021-12-06 23:59:16,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:16,283 INFO L470 AbstractCegarLoop]: Abstraction has 3060 states and 4370 transitions. [2021-12-06 23:59:16,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:16,283 INFO L276 IsEmpty]: Start isEmpty. Operand 3060 states and 4370 transitions. [2021-12-06 23:59:16,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 23:59:16,283 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:16,283 INFO L514 BasicCegarLoop]: trace histogram [8, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:16,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-12-06 23:59:16,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:16,484 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:16,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:16,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1339034765, now seen corresponding path program 1 times [2021-12-06 23:59:16,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:16,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611885857] [2021-12-06 23:59:16,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:16,487 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:16,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:16,489 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:16,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-06 23:59:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:16,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 23:59:16,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:16,628 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 23:59:16,692 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 18 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-06 23:59:16,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:16,762 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 18 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-06 23:59:16,762 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:59:16,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611885857] [2021-12-06 23:59:16,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611885857] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:59:16,762 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:59:16,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-12-06 23:59:16,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092916654] [2021-12-06 23:59:16,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:16,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:59:16,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:59:16,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:59:16,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 23:59:16,763 INFO L87 Difference]: Start difference. First operand 3060 states and 4370 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:17,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:17,045 INFO L93 Difference]: Finished difference Result 6279 states and 8905 transitions. [2021-12-06 23:59:17,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:59:17,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-06 23:59:17,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:17,067 INFO L225 Difference]: With dead ends: 6279 [2021-12-06 23:59:17,067 INFO L226 Difference]: Without dead ends: 6279 [2021-12-06 23:59:17,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 101 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:59:17,068 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 245 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:17,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 219 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:59:17,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6279 states. [2021-12-06 23:59:17,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6279 to 5707. [2021-12-06 23:59:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5707 states, 5696 states have (on average 1.4332865168539326) internal successors, (8164), 5706 states have internal predecessors, (8164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:17,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5707 states to 5707 states and 8164 transitions. [2021-12-06 23:59:17,140 INFO L78 Accepts]: Start accepts. Automaton has 5707 states and 8164 transitions. Word has length 53 [2021-12-06 23:59:17,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:17,140 INFO L470 AbstractCegarLoop]: Abstraction has 5707 states and 8164 transitions. [2021-12-06 23:59:17,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:17,140 INFO L276 IsEmpty]: Start isEmpty. Operand 5707 states and 8164 transitions. [2021-12-06 23:59:17,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-06 23:59:17,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:17,141 INFO L514 BasicCegarLoop]: trace histogram [8, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:17,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-12-06 23:59:17,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:17,341 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:17,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:17,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1339034764, now seen corresponding path program 1 times [2021-12-06 23:59:17,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:17,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690551044] [2021-12-06 23:59:17,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:17,345 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:17,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:17,347 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:17,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-06 23:59:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:17,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:59:17,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:17,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-06 23:59:17,581 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 18 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-06 23:59:17,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:18,023 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 18 proven. 34 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-06 23:59:18,024 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:59:18,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690551044] [2021-12-06 23:59:18,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [690551044] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:59:18,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:59:18,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-12-06 23:59:18,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739608161] [2021-12-06 23:59:18,024 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:18,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 23:59:18,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:59:18,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 23:59:18,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 23:59:18,025 INFO L87 Difference]: Start difference. First operand 5707 states and 8164 transitions. Second operand has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:18,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:18,728 INFO L93 Difference]: Finished difference Result 9231 states and 12960 transitions. [2021-12-06 23:59:18,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 23:59:18,730 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-06 23:59:18,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:18,743 INFO L225 Difference]: With dead ends: 9231 [2021-12-06 23:59:18,744 INFO L226 Difference]: Without dead ends: 9231 [2021-12-06 23:59:18,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-12-06 23:59:18,744 INFO L933 BasicCegarLoop]: 90 mSDtfsCounter, 289 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:18,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 439 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 23:59:18,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9231 states. [2021-12-06 23:59:18,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9231 to 8090. [2021-12-06 23:59:18,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8090 states, 8079 states have (on average 1.4227008293105583) internal successors, (11494), 8089 states have internal predecessors, (11494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:18,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8090 states to 8090 states and 11494 transitions. [2021-12-06 23:59:18,840 INFO L78 Accepts]: Start accepts. Automaton has 8090 states and 11494 transitions. Word has length 53 [2021-12-06 23:59:18,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:18,840 INFO L470 AbstractCegarLoop]: Abstraction has 8090 states and 11494 transitions. [2021-12-06 23:59:18,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.142857142857142) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:18,840 INFO L276 IsEmpty]: Start isEmpty. Operand 8090 states and 11494 transitions. [2021-12-06 23:59:18,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 23:59:18,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:18,842 INFO L514 BasicCegarLoop]: trace histogram [9, 6, 6, 5, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:18,849 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-12-06 23:59:19,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:19,043 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:19,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:19,044 INFO L85 PathProgramCache]: Analyzing trace with hash -137690402, now seen corresponding path program 1 times [2021-12-06 23:59:19,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:19,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250370684] [2021-12-06 23:59:19,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:19,045 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:19,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:19,046 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:19,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-12-06 23:59:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:19,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 23:59:19,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:19,237 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 46 proven. 31 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-06 23:59:19,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:19,301 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 46 proven. 31 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-06 23:59:19,301 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:59:19,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250370684] [2021-12-06 23:59:19,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250370684] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:59:19,301 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:59:19,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-12-06 23:59:19,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413509865] [2021-12-06 23:59:19,301 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:19,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:59:19,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:59:19,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:59:19,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:59:19,302 INFO L87 Difference]: Start difference. First operand 8090 states and 11494 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:19,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:19,370 INFO L93 Difference]: Finished difference Result 9947 states and 13704 transitions. [2021-12-06 23:59:19,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:59:19,371 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-12-06 23:59:19,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:19,381 INFO L225 Difference]: With dead ends: 9947 [2021-12-06 23:59:19,381 INFO L226 Difference]: Without dead ends: 9947 [2021-12-06 23:59:19,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:59:19,382 INFO L933 BasicCegarLoop]: 247 mSDtfsCounter, 337 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:19,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 995 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:59:19,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9947 states. [2021-12-06 23:59:19,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9947 to 7602. [2021-12-06 23:59:19,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7602 states, 7591 states have (on average 1.4090370175207483) internal successors, (10696), 7601 states have internal predecessors, (10696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:19,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7602 states to 7602 states and 10696 transitions. [2021-12-06 23:59:19,487 INFO L78 Accepts]: Start accepts. Automaton has 7602 states and 10696 transitions. Word has length 68 [2021-12-06 23:59:19,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:19,487 INFO L470 AbstractCegarLoop]: Abstraction has 7602 states and 10696 transitions. [2021-12-06 23:59:19,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:19,487 INFO L276 IsEmpty]: Start isEmpty. Operand 7602 states and 10696 transitions. [2021-12-06 23:59:19,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-06 23:59:19,489 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:19,489 INFO L514 BasicCegarLoop]: trace histogram [11, 6, 5, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:19,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-12-06 23:59:19,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:19,690 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:19,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:19,691 INFO L85 PathProgramCache]: Analyzing trace with hash -231185729, now seen corresponding path program 1 times [2021-12-06 23:59:19,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:19,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769732260] [2021-12-06 23:59:19,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:19,694 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:19,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:19,696 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:19,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-12-06 23:59:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:59:19,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 23:59:19,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:59:19,958 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 68 proven. 31 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-12-06 23:59:19,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:59:20,135 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 68 proven. 31 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-12-06 23:59:20,135 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 23:59:20,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769732260] [2021-12-06 23:59:20,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769732260] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:59:20,135 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:59:20,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-12-06 23:59:20,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553920640] [2021-12-06 23:59:20,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:59:20,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 23:59:20,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 23:59:20,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 23:59:20,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:59:20,137 INFO L87 Difference]: Start difference. First operand 7602 states and 10696 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:20,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:59:20,256 INFO L93 Difference]: Finished difference Result 11869 states and 16395 transitions. [2021-12-06 23:59:20,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 23:59:20,257 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-12-06 23:59:20,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:59:20,272 INFO L225 Difference]: With dead ends: 11869 [2021-12-06 23:59:20,272 INFO L226 Difference]: Without dead ends: 11869 [2021-12-06 23:59:20,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-12-06 23:59:20,273 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 517 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:59:20,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 853 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:59:20,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11869 states. [2021-12-06 23:59:20,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11869 to 11460. [2021-12-06 23:59:20,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11460 states, 11449 states have (on average 1.3871953882435146) internal successors, (15882), 11459 states have internal predecessors, (15882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:20,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11460 states to 11460 states and 15882 transitions. [2021-12-06 23:59:20,399 INFO L78 Accepts]: Start accepts. Automaton has 11460 states and 15882 transitions. Word has length 71 [2021-12-06 23:59:20,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:59:20,400 INFO L470 AbstractCegarLoop]: Abstraction has 11460 states and 15882 transitions. [2021-12-06 23:59:20,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 10 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:59:20,400 INFO L276 IsEmpty]: Start isEmpty. Operand 11460 states and 15882 transitions. [2021-12-06 23:59:20,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-06 23:59:20,401 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:59:20,401 INFO L514 BasicCegarLoop]: trace histogram [10, 6, 6, 5, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:20,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-12-06 23:59:20,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:20,602 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 16 more)] === [2021-12-06 23:59:20,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:59:20,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1631832859, now seen corresponding path program 1 times [2021-12-06 23:59:20,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 23:59:20,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513678045] [2021-12-06 23:59:20,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:59:20,604 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 23:59:20,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 23:59:20,605 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 23:59:20,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-12-06 23:59:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:59:20,834 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 23:59:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 23:59:20,957 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-06 23:59:20,957 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 23:59:20,958 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK (19 of 20 remaining) [2021-12-06 23:59:20,959 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (18 of 20 remaining) [2021-12-06 23:59:20,959 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (17 of 20 remaining) [2021-12-06 23:59:20,959 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (16 of 20 remaining) [2021-12-06 23:59:20,959 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (15 of 20 remaining) [2021-12-06 23:59:20,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (14 of 20 remaining) [2021-12-06 23:59:20,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (13 of 20 remaining) [2021-12-06 23:59:20,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (12 of 20 remaining) [2021-12-06 23:59:20,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (11 of 20 remaining) [2021-12-06 23:59:20,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (10 of 20 remaining) [2021-12-06 23:59:20,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (9 of 20 remaining) [2021-12-06 23:59:20,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATION (8 of 20 remaining) [2021-12-06 23:59:20,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATION (7 of 20 remaining) [2021-12-06 23:59:20,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATION (6 of 20 remaining) [2021-12-06 23:59:20,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATION (5 of 20 remaining) [2021-12-06 23:59:20,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATION (4 of 20 remaining) [2021-12-06 23:59:20,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATION (3 of 20 remaining) [2021-12-06 23:59:20,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_FREE (2 of 20 remaining) [2021-12-06 23:59:20,960 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_FREE (1 of 20 remaining) [2021-12-06 23:59:20,961 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_FREE (0 of 20 remaining) [2021-12-06 23:59:20,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-12-06 23:59:21,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 23:59:21,170 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:59:21,178 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 23:59:21,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 11:59:21 BoogieIcfgContainer [2021-12-06 23:59:21,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 23:59:21,254 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 23:59:21,254 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 23:59:21,255 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 23:59:21,255 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:59:06" (3/4) ... [2021-12-06 23:59:21,257 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 23:59:21,257 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 23:59:21,258 INFO L158 Benchmark]: Toolchain (without parser) took 15070.30ms. Allocated memory was 56.6MB in the beginning and 186.6MB in the end (delta: 130.0MB). Free memory was 37.8MB in the beginning and 79.2MB in the end (delta: -41.4MB). Peak memory consumption was 88.8MB. Max. memory is 16.1GB. [2021-12-06 23:59:21,258 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 44.0MB. Free memory was 25.7MB in the beginning and 25.6MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:59:21,258 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.86ms. Allocated memory is still 56.6MB. Free memory was 37.7MB in the beginning and 31.7MB in the end (delta: 6.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-06 23:59:21,258 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.58ms. Allocated memory is still 56.6MB. Free memory was 31.5MB in the beginning and 29.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:59:21,259 INFO L158 Benchmark]: Boogie Preprocessor took 24.01ms. Allocated memory is still 56.6MB. Free memory was 29.4MB in the beginning and 27.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:59:21,259 INFO L158 Benchmark]: RCFGBuilder took 409.35ms. Allocated memory is still 56.6MB. Free memory was 27.7MB in the beginning and 25.0MB in the end (delta: 2.7MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2021-12-06 23:59:21,259 INFO L158 Benchmark]: TraceAbstraction took 14273.42ms. Allocated memory was 56.6MB in the beginning and 186.6MB in the end (delta: 130.0MB). Free memory was 24.5MB in the beginning and 79.2MB in the end (delta: -54.7MB). Peak memory consumption was 75.9MB. Max. memory is 16.1GB. [2021-12-06 23:59:21,259 INFO L158 Benchmark]: Witness Printer took 2.87ms. Allocated memory is still 186.6MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:59:21,261 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 44.0MB. Free memory was 25.7MB in the beginning and 25.6MB in the end (delta: 42.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.86ms. Allocated memory is still 56.6MB. Free memory was 37.7MB in the beginning and 31.7MB in the end (delta: 6.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.58ms. Allocated memory is still 56.6MB. Free memory was 31.5MB in the beginning and 29.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.01ms. Allocated memory is still 56.6MB. Free memory was 29.4MB in the beginning and 27.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 409.35ms. Allocated memory is still 56.6MB. Free memory was 27.7MB in the beginning and 25.0MB in the end (delta: 2.7MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * TraceAbstraction took 14273.42ms. Allocated memory was 56.6MB in the beginning and 186.6MB in the end (delta: 130.0MB). Free memory was 24.5MB in the beginning and 79.2MB in the end (delta: -54.7MB). Peak memory consumption was 75.9MB. Max. memory is 16.1GB. * Witness Printer took 2.87ms. Allocated memory is still 186.6MB. Free memory is still 79.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 592]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 592. Possible FailurePath: [L528] struct cell *S; [L529] int pc1 = 1; [L530] int pc4 = 1; [L531] static struct cell *t1 = ((void *)0); [L532] static struct cell *x1 = ((void *)0); [L561] struct cell* garbage; [L562] static struct cell *t4 = ((void *)0); [L563] static struct cell *x4 = ((void *)0); [L566] static int res4; VAL [garbage={0:0}, pc1=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L537] x1 = malloc(sizeof(*x1)) [L538] x1->data = 0 VAL [garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L539] x1->next = ((void *)0) VAL [garbage={0:0}, pc1=2, pc1++=1, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: VAL [garbage={0:0}, pc1=3, pc1++=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L542] x1->data = 4 VAL [garbage={0:0}, pc1=3, pc1++=2, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L545] t1 = S VAL [garbage={0:0}, pc1=4, pc1++=3, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L547] case 4: VAL [garbage={0:0}, pc1=5, pc1++=4, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L548] x1->next = t1 VAL [garbage={0:0}, pc1=5, pc1++=4, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L547] case 4: [L550] case 5: VAL [garbage={0:0}, pc1=6, pc1++=5, pc4=1, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L551] COND TRUE S == t1 [L552] S = x1 VAL [garbage={0:0}, pc1=6, pc1++=5, pc4=1, res4=0, S={6:0}, t1={0:0}, t4={0:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L569] t4 = S VAL [garbage={0:0}, pc1=6, pc4=2, pc4++=1, res4=0, S={6:0}, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L598] RET pop() [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: VAL [garbage={0:0}, pc1=6, pc4=3, pc4++=2, res4=0, S={6:0}, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L572] COND FALSE !(t4 == ((void *)0)) VAL [garbage={0:0}, pc1=6, pc4=3, pc4++=2, res4=0, S={6:0}, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L598] RET pop() [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: [L575] case 3: VAL [garbage={0:0}, pc1=6, pc4=4, pc4++=3, res4=0, S={6:0}, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L576] EXPR t4->next VAL [garbage={0:0}, pc1=6, pc4=4, pc4++=3, res4=0, S={6:0}, t1={0:0}, t4={6:0}, t4->next={0:0}, x1={6:0}, x4={0:0}] [L576] x4 = t4->next [L598] RET pop() [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND FALSE !(__VERIFIER_nondet_int()) [L598] CALL pop() [L567] pc4++ [L568] case 1: [L571] case 2: [L575] case 3: [L578] case 4: VAL [garbage={0:0}, pc1=6, pc4=5, pc4++=4, res4=0, S={6:0}, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L579] COND TRUE S == t4 [L580] S = x4 VAL [garbage={0:0}, pc1=6, pc4=5, pc4++=4, res4=0, S={0:0}, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L598] RET pop() [L594] COND TRUE S || 1 != pc1 || __VERIFIER_nondet_int() [L595] COND TRUE __VERIFIER_nondet_int() [L596] CALL push() [L535] pc1++ [L536] case 1: [L541] case 2: [L544] case 3: [L547] case 4: [L550] case 5: [L556] case 6: [L557] pc1 = 1 VAL [garbage={0:0}, pc1=1, pc1++=6, pc4=5, res4=0, S={0:0}, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L596] RET push() [L594] COND FALSE !(S || 1 != pc1 || __VERIFIER_nondet_int()) [L600] COND FALSE !(\read(*garbage)) VAL [garbage={0:0}, pc1=1, pc4=5, res4=0, S={0:0}, t1={0:0}, t4={6:0}, x1={6:0}, x4={0:0}] [L605] S = ((void *)0) [L606] t1 = ((void *)0) [L607] x1 = ((void *)0) [L608] t4 = ((void *)0) [L609] x4 = ((void *)0) [L610] return !!garbage; VAL [\result=0, garbage={0:0}, pc1=1, pc4=5, res4=0, S={0:0}, t1={0:0}, t4={0:0}, x1={0:0}, x4={0:0}] - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 539]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 542]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 576]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 585]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 586]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 601]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 602]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 20 error locations. Started 1 CEGAR loops. OverallTime: 14.1s, OverallIterations: 23, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5369 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5369 mSDsluCounter, 13248 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10179 mSDsCounter, 412 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1698 IncrementalHoareTripleChecker+Invalid, 2110 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 412 mSolverCounterUnsat, 3069 mSDtfsCounter, 1698 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1255 GetRequests, 1066 SyntacticMatches, 3 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11460occurred in iteration=22, InterpolantAutomatonStates: 198, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 22 MinimizatonAttempts, 7546 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 695 NumberOfCodeBlocks, 695 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1162 ConstructedInterpolants, 0 QuantifiedInterpolants, 5579 SizeOfPredicates, 53 NumberOfNonLiveVariables, 2504 ConjunctsInSsa, 143 ConjunctsInUnsatCore, 38 InterpolantComputations, 6 PerfectInterpolantSequences, 1030/1696 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-06 23:59:21,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2ec80b5-da38-4a8d-800c-117fcbdecb8d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample