./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0513.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_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/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_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0513.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/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_07c2d62f-6a69-4f0f-add7-85922a643f8a/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 aaec9a71c2206d3d9fbfa56b3c6172e3ff60aad385f0ad346fdbde53f8ce1a2e --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:10:00,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:10:00,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:10:00,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:10:00,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:10:00,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:10:00,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:10:00,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:10:00,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:10:00,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:10:00,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:10:00,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:10:00,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:10:00,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:10:00,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:10:00,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:10:01,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:10:01,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:10:01,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:10:01,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:10:01,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:10:01,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:10:01,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:10:01,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:10:01,015 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:10:01,015 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:10:01,016 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:10:01,017 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:10:01,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:10:01,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:10:01,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:10:01,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:10:01,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:10:01,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:10:01,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:10:01,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:10:01,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:10:01,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:10:01,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:10:01,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:10:01,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:10:01,031 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-06 22:10:01,060 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:10:01,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:10:01,061 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:10:01,061 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:10:01,061 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:10:01,061 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:10:01,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:10:01,062 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:10:01,062 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:10:01,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:10:01,062 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:10:01,063 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-06 22:10:01,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:10:01,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:10:01,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:10:01,063 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-06 22:10:01,063 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-06 22:10:01,064 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-06 22:10:01,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:10:01,064 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 22:10:01,064 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:10:01,064 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:10:01,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:10:01,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:10:01,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:10:01,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:10:01,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:10:01,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:10:01,065 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:10:01,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:10:01,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:10:01,065 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_07c2d62f-6a69-4f0f-add7-85922a643f8a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aaec9a71c2206d3d9fbfa56b3c6172e3ff60aad385f0ad346fdbde53f8ce1a2e [2021-12-06 22:10:01,251 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:10:01,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:10:01,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:10:01,268 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:10:01,268 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:10:01,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/memsafety/test-0513.i [2021-12-06 22:10:01,308 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/data/0498e051e/bcb9fb8b26a34e5a970d64041d302ed9/FLAGafc81dff2 [2021-12-06 22:10:01,714 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:10:01,715 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/sv-benchmarks/c/memsafety/test-0513.i [2021-12-06 22:10:01,727 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/data/0498e051e/bcb9fb8b26a34e5a970d64041d302ed9/FLAGafc81dff2 [2021-12-06 22:10:02,082 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/data/0498e051e/bcb9fb8b26a34e5a970d64041d302ed9 [2021-12-06 22:10:02,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:10:02,086 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:10:02,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:10:02,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:10:02,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:10:02,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:10:02" (1/1) ... [2021-12-06 22:10:02,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@685ee1f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:10:02, skipping insertion in model container [2021-12-06 22:10:02,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:10:02" (1/1) ... [2021-12-06 22:10:02,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:10:02,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:10:02,301 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:10:02,307 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:10:02,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:10:02,363 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:10:02,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:10:02 WrapperNode [2021-12-06 22:10:02,364 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:10:02,364 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:10:02,364 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:10:02,365 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:10:02,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:10:02" (1/1) ... [2021-12-06 22:10:02,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:10:02" (1/1) ... [2021-12-06 22:10:02,399 INFO L137 Inliner]: procedures = 123, calls = 37, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 124 [2021-12-06 22:10:02,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:10:02,400 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:10:02,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:10:02,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:10:02,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:10:02" (1/1) ... [2021-12-06 22:10:02,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:10:02" (1/1) ... [2021-12-06 22:10:02,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:10:02" (1/1) ... [2021-12-06 22:10:02,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:10:02" (1/1) ... [2021-12-06 22:10:02,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:10:02" (1/1) ... [2021-12-06 22:10:02,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:10:02" (1/1) ... [2021-12-06 22:10:02,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:10:02" (1/1) ... [2021-12-06 22:10:02,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:10:02,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:10:02,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:10:02,425 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:10:02,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:10:02" (1/1) ... [2021-12-06 22:10:02,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:10:02,440 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:10:02,450 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:10:02,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:10:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 22:10:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 22:10:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 22:10:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:10:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 22:10:02,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 22:10:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 22:10:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:10:02,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:10:02,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:10:02,554 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:10:02,555 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:10:02,798 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:10:02,803 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:10:02,804 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-06 22:10:02,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:10:02 BoogieIcfgContainer [2021-12-06 22:10:02,805 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:10:02,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:10:02,807 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:10:02,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:10:02,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:10:02" (1/3) ... [2021-12-06 22:10:02,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9e661f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:10:02, skipping insertion in model container [2021-12-06 22:10:02,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:10:02" (2/3) ... [2021-12-06 22:10:02,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9e661f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:10:02, skipping insertion in model container [2021-12-06 22:10:02,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:10:02" (3/3) ... [2021-12-06 22:10:02,811 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0513.i [2021-12-06 22:10:02,815 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:10:02,815 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 62 error locations. [2021-12-06 22:10:02,846 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:10:02,851 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 22:10:02,851 INFO L340 AbstractCegarLoop]: Starting to check reachability of 62 error locations. [2021-12-06 22:10:02,863 INFO L276 IsEmpty]: Start isEmpty. Operand has 132 states, 69 states have (on average 2.101449275362319) internal successors, (145), 131 states have internal predecessors, (145), 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 22:10:02,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-06 22:10:02,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:02,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-06 22:10:02,868 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:02,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:02,872 INFO L85 PathProgramCache]: Analyzing trace with hash 28740643, now seen corresponding path program 1 times [2021-12-06 22:10:02,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:02,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105512444] [2021-12-06 22:10:02,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:02,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:02,971 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 22:10:02,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:02,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105512444] [2021-12-06 22:10:02,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105512444] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:02,972 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:02,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:10:02,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684653636] [2021-12-06 22:10:02,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:02,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 22:10:02,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:02,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 22:10:02,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 22:10:02,999 INFO L87 Difference]: Start difference. First operand has 132 states, 69 states have (on average 2.101449275362319) internal successors, (145), 131 states have internal predecessors, (145), 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 22:10:03,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:03,014 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2021-12-06 22:10:03,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 22:10:03,016 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 22:10:03,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:03,023 INFO L225 Difference]: With dead ends: 132 [2021-12-06 22:10:03,023 INFO L226 Difference]: Without dead ends: 130 [2021-12-06 22:10:03,025 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 22:10:03,028 INFO L933 BasicCegarLoop]: 140 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, 140 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 22:10:03,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:10:03,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-06 22:10:03,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-12-06 22:10:03,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 68 states have (on average 2.0294117647058822) internal successors, (138), 129 states have internal predecessors, (138), 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 22:10:03,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 138 transitions. [2021-12-06 22:10:03,060 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 138 transitions. Word has length 5 [2021-12-06 22:10:03,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:03,060 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 138 transitions. [2021-12-06 22:10:03,060 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 22:10:03,060 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 138 transitions. [2021-12-06 22:10:03,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 22:10:03,060 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:03,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 22:10:03,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:10:03,061 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:03,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:03,062 INFO L85 PathProgramCache]: Analyzing trace with hash 889570808, now seen corresponding path program 1 times [2021-12-06 22:10:03,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:03,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627524740] [2021-12-06 22:10:03,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:03,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:03,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:03,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:03,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627524740] [2021-12-06 22:10:03,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627524740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:03,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:03,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:10:03,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974884939] [2021-12-06 22:10:03,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:03,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:10:03,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:03,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:10:03,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:10:03,094 INFO L87 Difference]: Start difference. First operand 130 states and 138 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 22:10:03,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:03,218 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2021-12-06 22:10:03,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:10:03,219 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 22:10:03,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:03,221 INFO L225 Difference]: With dead ends: 176 [2021-12-06 22:10:03,221 INFO L226 Difference]: Without dead ends: 175 [2021-12-06 22:10:03,221 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 22:10:03,223 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 42 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:03,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 192 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:10:03,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-12-06 22:10:03,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 133. [2021-12-06 22:10:03,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 71 states have (on average 2.0) internal successors, (142), 132 states have internal predecessors, (142), 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 22:10:03,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 142 transitions. [2021-12-06 22:10:03,236 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 142 transitions. Word has length 6 [2021-12-06 22:10:03,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:03,237 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 142 transitions. [2021-12-06 22:10:03,237 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 22:10:03,237 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 142 transitions. [2021-12-06 22:10:03,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 22:10:03,237 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:03,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 22:10:03,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:10:03,238 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:03,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:03,239 INFO L85 PathProgramCache]: Analyzing trace with hash 889570732, now seen corresponding path program 1 times [2021-12-06 22:10:03,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:03,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156752690] [2021-12-06 22:10:03,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:03,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:03,273 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 22:10:03,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:03,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156752690] [2021-12-06 22:10:03,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156752690] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:03,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:03,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:10:03,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893281368] [2021-12-06 22:10:03,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:03,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:10:03,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:03,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:10:03,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:10:03,276 INFO L87 Difference]: Start difference. First operand 133 states and 142 transitions. Second operand has 3 states, 3 states have (on average 2.0) 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 22:10:03,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:03,318 INFO L93 Difference]: Finished difference Result 145 states and 152 transitions. [2021-12-06 22:10:03,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:10:03,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) 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 22:10:03,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:03,320 INFO L225 Difference]: With dead ends: 145 [2021-12-06 22:10:03,320 INFO L226 Difference]: Without dead ends: 144 [2021-12-06 22:10:03,321 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 22:10:03,322 INFO L933 BasicCegarLoop]: 137 mSDtfsCounter, 15 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:03,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 229 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:10:03,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-12-06 22:10:03,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 138. [2021-12-06 22:10:03,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 76 states have (on average 1.9736842105263157) internal successors, (150), 137 states have internal predecessors, (150), 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 22:10:03,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 150 transitions. [2021-12-06 22:10:03,333 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 150 transitions. Word has length 6 [2021-12-06 22:10:03,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:03,333 INFO L470 AbstractCegarLoop]: Abstraction has 138 states and 150 transitions. [2021-12-06 22:10:03,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) 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 22:10:03,334 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 150 transitions. [2021-12-06 22:10:03,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 22:10:03,334 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:03,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 22:10:03,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 22:10:03,334 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:03,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:03,335 INFO L85 PathProgramCache]: Analyzing trace with hash 889571339, now seen corresponding path program 1 times [2021-12-06 22:10:03,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:03,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559902444] [2021-12-06 22:10:03,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:03,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:03,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:03,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:03,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559902444] [2021-12-06 22:10:03,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559902444] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:03,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:03,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:10:03,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700330714] [2021-12-06 22:10:03,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:03,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:10:03,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:03,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:10:03,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:10:03,373 INFO L87 Difference]: Start difference. First operand 138 states and 150 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 22:10:03,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:03,455 INFO L93 Difference]: Finished difference Result 169 states and 183 transitions. [2021-12-06 22:10:03,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:10:03,455 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 22:10:03,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:03,457 INFO L225 Difference]: With dead ends: 169 [2021-12-06 22:10:03,458 INFO L226 Difference]: Without dead ends: 169 [2021-12-06 22:10:03,458 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 22:10:03,459 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 75 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:03,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 167 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:10:03,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-12-06 22:10:03,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 139. [2021-12-06 22:10:03,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 80 states have (on average 1.9125) internal successors, (153), 138 states have internal predecessors, (153), 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 22:10:03,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 153 transitions. [2021-12-06 22:10:03,466 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 153 transitions. Word has length 6 [2021-12-06 22:10:03,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:03,466 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 153 transitions. [2021-12-06 22:10:03,467 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 22:10:03,467 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 153 transitions. [2021-12-06 22:10:03,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 22:10:03,467 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:03,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 22:10:03,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 22:10:03,467 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:03,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:03,468 INFO L85 PathProgramCache]: Analyzing trace with hash 889571340, now seen corresponding path program 1 times [2021-12-06 22:10:03,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:03,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551299026] [2021-12-06 22:10:03,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:03,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:03,498 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 22:10:03,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:03,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551299026] [2021-12-06 22:10:03,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551299026] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:03,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:03,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:10:03,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795413473] [2021-12-06 22:10:03,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:03,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:10:03,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:03,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:10:03,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:10:03,499 INFO L87 Difference]: Start difference. First operand 139 states and 153 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 22:10:03,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:03,562 INFO L93 Difference]: Finished difference Result 137 states and 149 transitions. [2021-12-06 22:10:03,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:10:03,562 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 22:10:03,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:03,563 INFO L225 Difference]: With dead ends: 137 [2021-12-06 22:10:03,563 INFO L226 Difference]: Without dead ends: 137 [2021-12-06 22:10:03,564 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 22:10:03,565 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 22 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:03,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 173 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:10:03,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-06 22:10:03,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-12-06 22:10:03,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 80 states have (on average 1.8625) internal successors, (149), 136 states have internal predecessors, (149), 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 22:10:03,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 149 transitions. [2021-12-06 22:10:03,573 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 149 transitions. Word has length 6 [2021-12-06 22:10:03,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:03,573 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 149 transitions. [2021-12-06 22:10:03,573 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 22:10:03,573 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 149 transitions. [2021-12-06 22:10:03,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 22:10:03,574 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:03,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:03,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 22:10:03,574 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:03,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:03,575 INFO L85 PathProgramCache]: Analyzing trace with hash -2119659887, now seen corresponding path program 1 times [2021-12-06 22:10:03,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:03,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058111842] [2021-12-06 22:10:03,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:03,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:03,614 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 22:10:03,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:03,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058111842] [2021-12-06 22:10:03,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058111842] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:03,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:03,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:10:03,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855591397] [2021-12-06 22:10:03,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:03,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:10:03,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:03,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:10:03,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:10:03,616 INFO L87 Difference]: Start difference. First operand 137 states and 149 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 22:10:03,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:03,659 INFO L93 Difference]: Finished difference Result 133 states and 145 transitions. [2021-12-06 22:10:03,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:10:03,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2021-12-06 22:10:03,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:03,661 INFO L225 Difference]: With dead ends: 133 [2021-12-06 22:10:03,661 INFO L226 Difference]: Without dead ends: 133 [2021-12-06 22:10:03,661 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 22:10:03,662 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 23 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:03,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 168 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:10:03,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-12-06 22:10:03,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-12-06 22:10:03,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 80 states have (on average 1.8125) internal successors, (145), 132 states have internal predecessors, (145), 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 22:10:03,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 145 transitions. [2021-12-06 22:10:03,668 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 145 transitions. Word has length 11 [2021-12-06 22:10:03,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:03,668 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 145 transitions. [2021-12-06 22:10:03,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 22:10:03,668 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 145 transitions. [2021-12-06 22:10:03,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-06 22:10:03,669 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:03,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:03,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:10:03,669 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:03,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:03,669 INFO L85 PathProgramCache]: Analyzing trace with hash -2119659886, now seen corresponding path program 1 times [2021-12-06 22:10:03,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:03,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95111351] [2021-12-06 22:10:03,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:03,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:03,713 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 22:10:03,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:03,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95111351] [2021-12-06 22:10:03,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95111351] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:03,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:03,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 22:10:03,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166896621] [2021-12-06 22:10:03,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:03,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:10:03,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:03,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:10:03,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:10:03,715 INFO L87 Difference]: Start difference. First operand 133 states and 145 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 22:10:03,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:03,762 INFO L93 Difference]: Finished difference Result 130 states and 142 transitions. [2021-12-06 22:10:03,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:10:03,763 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2021-12-06 22:10:03,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:03,763 INFO L225 Difference]: With dead ends: 130 [2021-12-06 22:10:03,763 INFO L226 Difference]: Without dead ends: 130 [2021-12-06 22:10:03,764 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 22:10:03,764 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 12 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:03,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 179 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:10:03,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-12-06 22:10:03,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-12-06 22:10:03,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 80 states have (on average 1.775) internal successors, (142), 129 states have internal predecessors, (142), 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 22:10:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 142 transitions. [2021-12-06 22:10:03,768 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 142 transitions. Word has length 11 [2021-12-06 22:10:03,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:03,769 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 142 transitions. [2021-12-06 22:10:03,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 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 22:10:03,769 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 142 transitions. [2021-12-06 22:10:03,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 22:10:03,769 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:03,769 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:03,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:10:03,769 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:03,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:03,770 INFO L85 PathProgramCache]: Analyzing trace with hash -967503371, now seen corresponding path program 1 times [2021-12-06 22:10:03,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:03,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524590629] [2021-12-06 22:10:03,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:03,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:03,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:03,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:03,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524590629] [2021-12-06 22:10:03,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524590629] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:03,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:03,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:10:03,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592624110] [2021-12-06 22:10:03,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:03,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:10:03,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:03,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:10:03,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:10:03,823 INFO L87 Difference]: Start difference. First operand 130 states and 142 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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 22:10:03,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:03,890 INFO L93 Difference]: Finished difference Result 228 states and 248 transitions. [2021-12-06 22:10:03,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:10:03,890 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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 22:10:03,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:03,891 INFO L225 Difference]: With dead ends: 228 [2021-12-06 22:10:03,891 INFO L226 Difference]: Without dead ends: 228 [2021-12-06 22:10:03,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 22:10:03,892 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 126 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:03,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 251 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:10:03,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-12-06 22:10:03,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 130. [2021-12-06 22:10:03,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 80 states have (on average 1.75) internal successors, (140), 129 states have internal predecessors, (140), 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 22:10:03,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 140 transitions. [2021-12-06 22:10:03,897 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 140 transitions. Word has length 18 [2021-12-06 22:10:03,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:03,897 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 140 transitions. [2021-12-06 22:10:03,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 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 22:10:03,897 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 140 transitions. [2021-12-06 22:10:03,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 22:10:03,898 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:03,898 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:03,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:10:03,898 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:03,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:03,899 INFO L85 PathProgramCache]: Analyzing trace with hash -967503447, now seen corresponding path program 1 times [2021-12-06 22:10:03,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:03,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172664482] [2021-12-06 22:10:03,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:03,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:03,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:03,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:03,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:03,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172664482] [2021-12-06 22:10:03,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172664482] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:03,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:03,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:10:03,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867038780] [2021-12-06 22:10:03,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:03,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:10:03,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:03,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:10:03,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:10:03,960 INFO L87 Difference]: Start difference. First operand 130 states and 140 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 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 22:10:04,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:04,055 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2021-12-06 22:10:04,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:10:04,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 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 22:10:04,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:04,056 INFO L225 Difference]: With dead ends: 124 [2021-12-06 22:10:04,056 INFO L226 Difference]: Without dead ends: 124 [2021-12-06 22:10:04,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:10:04,057 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 46 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:04,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 213 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:10:04,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-12-06 22:10:04,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2021-12-06 22:10:04,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 81 states have (on average 1.654320987654321) internal successors, (134), 122 states have internal predecessors, (134), 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 22:10:04,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 134 transitions. [2021-12-06 22:10:04,060 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 134 transitions. Word has length 18 [2021-12-06 22:10:04,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:04,061 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 134 transitions. [2021-12-06 22:10:04,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 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 22:10:04,061 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 134 transitions. [2021-12-06 22:10:04,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-06 22:10:04,061 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:04,061 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:04,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 22:10:04,062 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:04,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:04,062 INFO L85 PathProgramCache]: Analyzing trace with hash -967503446, now seen corresponding path program 1 times [2021-12-06 22:10:04,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:04,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300925896] [2021-12-06 22:10:04,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:04,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:04,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:04,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:04,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:04,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300925896] [2021-12-06 22:10:04,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300925896] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:04,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:04,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:10:04,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493949035] [2021-12-06 22:10:04,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:04,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:10:04,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:04,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:10:04,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:10:04,108 INFO L87 Difference]: Start difference. First operand 123 states and 134 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 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 22:10:04,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:04,226 INFO L93 Difference]: Finished difference Result 204 states and 223 transitions. [2021-12-06 22:10:04,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:10:04,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 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 22:10:04,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:04,228 INFO L225 Difference]: With dead ends: 204 [2021-12-06 22:10:04,228 INFO L226 Difference]: Without dead ends: 204 [2021-12-06 22:10:04,229 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 22:10:04,229 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 100 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:04,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 168 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:10:04,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-12-06 22:10:04,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 162. [2021-12-06 22:10:04,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 122 states have (on average 1.680327868852459) internal successors, (205), 161 states have internal predecessors, (205), 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 22:10:04,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 205 transitions. [2021-12-06 22:10:04,235 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 205 transitions. Word has length 18 [2021-12-06 22:10:04,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:04,236 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 205 transitions. [2021-12-06 22:10:04,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 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 22:10:04,236 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 205 transitions. [2021-12-06 22:10:04,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 22:10:04,237 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:04,237 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:04,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 22:10:04,238 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:04,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:04,238 INFO L85 PathProgramCache]: Analyzing trace with hash 199814016, now seen corresponding path program 1 times [2021-12-06 22:10:04,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:04,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853343796] [2021-12-06 22:10:04,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:04,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:04,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:04,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:04,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853343796] [2021-12-06 22:10:04,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853343796] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:04,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:04,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 22:10:04,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633356236] [2021-12-06 22:10:04,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:04,281 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:10:04,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:04,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:10:04,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 22:10:04,282 INFO L87 Difference]: Start difference. First operand 162 states and 205 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 22:10:04,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:04,357 INFO L93 Difference]: Finished difference Result 205 states and 224 transitions. [2021-12-06 22:10:04,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:10:04,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 23 [2021-12-06 22:10:04,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:04,359 INFO L225 Difference]: With dead ends: 205 [2021-12-06 22:10:04,359 INFO L226 Difference]: Without dead ends: 205 [2021-12-06 22:10:04,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:10:04,360 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 225 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:04,360 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 309 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:10:04,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-12-06 22:10:04,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 163. [2021-12-06 22:10:04,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 123 states have (on average 1.6747967479674797) internal successors, (206), 162 states have internal predecessors, (206), 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 22:10:04,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 206 transitions. [2021-12-06 22:10:04,364 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 206 transitions. Word has length 23 [2021-12-06 22:10:04,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:04,364 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 206 transitions. [2021-12-06 22:10:04,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 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 22:10:04,364 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 206 transitions. [2021-12-06 22:10:04,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-06 22:10:04,365 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:04,365 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:04,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 22:10:04,365 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:04,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:04,365 INFO L85 PathProgramCache]: Analyzing trace with hash 198674982, now seen corresponding path program 1 times [2021-12-06 22:10:04,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:04,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397143750] [2021-12-06 22:10:04,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:04,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:04,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:04,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:04,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:04,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397143750] [2021-12-06 22:10:04,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397143750] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:04,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:04,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:10:04,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010449268] [2021-12-06 22:10:04,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:04,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:10:04,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:04,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:10:04,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:10:04,428 INFO L87 Difference]: Start difference. First operand 163 states and 206 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 22:10:04,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:04,527 INFO L93 Difference]: Finished difference Result 191 states and 235 transitions. [2021-12-06 22:10:04,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:10:04,527 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 23 [2021-12-06 22:10:04,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:04,528 INFO L225 Difference]: With dead ends: 191 [2021-12-06 22:10:04,528 INFO L226 Difference]: Without dead ends: 191 [2021-12-06 22:10:04,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:10:04,529 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 23 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:04,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 399 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:10:04,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2021-12-06 22:10:04,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 170. [2021-12-06 22:10:04,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 130 states have (on average 1.646153846153846) internal successors, (214), 169 states have internal predecessors, (214), 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 22:10:04,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 214 transitions. [2021-12-06 22:10:04,534 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 214 transitions. Word has length 23 [2021-12-06 22:10:04,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:04,534 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 214 transitions. [2021-12-06 22:10:04,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 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 22:10:04,534 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 214 transitions. [2021-12-06 22:10:04,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 22:10:04,535 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:04,535 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:04,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 22:10:04,535 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr56REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:04,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:04,536 INFO L85 PathProgramCache]: Analyzing trace with hash -165115758, now seen corresponding path program 1 times [2021-12-06 22:10:04,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:04,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297160812] [2021-12-06 22:10:04,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:04,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:04,679 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:04,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:04,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297160812] [2021-12-06 22:10:04,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297160812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:04,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:04,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:10:04,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71908820] [2021-12-06 22:10:04,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:04,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:10:04,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:04,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:10:04,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:10:04,680 INFO L87 Difference]: Start difference. First operand 170 states and 214 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 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 22:10:05,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:05,023 INFO L93 Difference]: Finished difference Result 228 states and 279 transitions. [2021-12-06 22:10:05,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:10:05,023 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 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 26 [2021-12-06 22:10:05,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:05,024 INFO L225 Difference]: With dead ends: 228 [2021-12-06 22:10:05,024 INFO L226 Difference]: Without dead ends: 228 [2021-12-06 22:10:05,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:10:05,025 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 96 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:05,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 437 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 22:10:05,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-12-06 22:10:05,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 177. [2021-12-06 22:10:05,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 137 states have (on average 1.6277372262773722) internal successors, (223), 176 states have internal predecessors, (223), 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 22:10:05,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 223 transitions. [2021-12-06 22:10:05,029 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 223 transitions. Word has length 26 [2021-12-06 22:10:05,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:05,030 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 223 transitions. [2021-12-06 22:10:05,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 10 states have internal predecessors, (26), 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 22:10:05,030 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 223 transitions. [2021-12-06 22:10:05,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 22:10:05,031 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:05,031 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:05,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 22:10:05,031 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr57REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:05,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:05,031 INFO L85 PathProgramCache]: Analyzing trace with hash -165115757, now seen corresponding path program 1 times [2021-12-06 22:10:05,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:05,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891172757] [2021-12-06 22:10:05,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:05,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:05,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:05,198 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:05,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:05,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891172757] [2021-12-06 22:10:05,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891172757] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:05,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:05,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:10:05,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530261302] [2021-12-06 22:10:05,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:05,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:10:05,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:05,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:10:05,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:10:05,200 INFO L87 Difference]: Start difference. First operand 177 states and 223 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 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 22:10:05,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:05,432 INFO L93 Difference]: Finished difference Result 207 states and 251 transitions. [2021-12-06 22:10:05,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:10:05,432 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 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 26 [2021-12-06 22:10:05,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:05,433 INFO L225 Difference]: With dead ends: 207 [2021-12-06 22:10:05,433 INFO L226 Difference]: Without dead ends: 207 [2021-12-06 22:10:05,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:10:05,434 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 82 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:05,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 292 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:10:05,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-12-06 22:10:05,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 177. [2021-12-06 22:10:05,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 137 states have (on average 1.6204379562043796) internal successors, (222), 176 states have internal predecessors, (222), 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 22:10:05,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 222 transitions. [2021-12-06 22:10:05,440 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 222 transitions. Word has length 26 [2021-12-06 22:10:05,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:05,440 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 222 transitions. [2021-12-06 22:10:05,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 9 states have internal predecessors, (26), 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 22:10:05,441 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 222 transitions. [2021-12-06 22:10:05,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 22:10:05,441 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:05,442 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:05,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 22:10:05,442 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:05,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:05,442 INFO L85 PathProgramCache]: Analyzing trace with hash -823622550, now seen corresponding path program 1 times [2021-12-06 22:10:05,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:05,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026323962] [2021-12-06 22:10:05,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:05,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:05,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:05,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026323962] [2021-12-06 22:10:05,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026323962] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:05,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:05,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:10:05,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820827938] [2021-12-06 22:10:05,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:05,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:10:05,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:05,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:10:05,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:10:05,537 INFO L87 Difference]: Start difference. First operand 177 states and 222 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 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 22:10:05,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:05,640 INFO L93 Difference]: Finished difference Result 194 states and 238 transitions. [2021-12-06 22:10:05,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 22:10:05,640 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 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 22:10:05,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:05,641 INFO L225 Difference]: With dead ends: 194 [2021-12-06 22:10:05,642 INFO L226 Difference]: Without dead ends: 194 [2021-12-06 22:10:05,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-12-06 22:10:05,643 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 52 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:05,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 340 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:10:05,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-12-06 22:10:05,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 177. [2021-12-06 22:10:05,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 137 states have (on average 1.6131386861313868) internal successors, (221), 176 states have internal predecessors, (221), 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 22:10:05,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 221 transitions. [2021-12-06 22:10:05,648 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 221 transitions. Word has length 27 [2021-12-06 22:10:05,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:05,648 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 221 transitions. [2021-12-06 22:10:05,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 8 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 22:10:05,649 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 221 transitions. [2021-12-06 22:10:05,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 22:10:05,649 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:05,649 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:05,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 22:10:05,650 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:05,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:05,650 INFO L85 PathProgramCache]: Analyzing trace with hash 237551634, now seen corresponding path program 1 times [2021-12-06 22:10:05,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:05,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251112488] [2021-12-06 22:10:05,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:05,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:05,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:05,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:05,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251112488] [2021-12-06 22:10:05,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251112488] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:05,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:05,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:10:05,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069095037] [2021-12-06 22:10:05,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:05,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:10:05,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:05,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:10:05,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:10:05,744 INFO L87 Difference]: Start difference. First operand 177 states and 221 transitions. Second operand has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 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 22:10:05,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:05,937 INFO L93 Difference]: Finished difference Result 229 states and 275 transitions. [2021-12-06 22:10:05,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 22:10:05,937 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 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 28 [2021-12-06 22:10:05,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:05,939 INFO L225 Difference]: With dead ends: 229 [2021-12-06 22:10:05,939 INFO L226 Difference]: Without dead ends: 229 [2021-12-06 22:10:05,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:10:05,940 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 197 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:05,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 471 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:10:05,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-06 22:10:05,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 179. [2021-12-06 22:10:05,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 139 states have (on average 1.60431654676259) internal successors, (223), 178 states have internal predecessors, (223), 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 22:10:05,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 223 transitions. [2021-12-06 22:10:05,945 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 223 transitions. Word has length 28 [2021-12-06 22:10:05,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:05,946 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 223 transitions. [2021-12-06 22:10:05,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.5) internal successors, (28), 9 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 22:10:05,946 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 223 transitions. [2021-12-06 22:10:05,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 22:10:05,946 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:05,947 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:05,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 22:10:05,947 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:05,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:05,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1225833714, now seen corresponding path program 1 times [2021-12-06 22:10:05,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:05,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173025744] [2021-12-06 22:10:05,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:05,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:06,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:06,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:06,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173025744] [2021-12-06 22:10:06,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173025744] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:06,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:06,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:10:06,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816685020] [2021-12-06 22:10:06,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:06,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:10:06,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:06,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:10:06,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:10:06,058 INFO L87 Difference]: Start difference. First operand 179 states and 223 transitions. Second operand has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 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 22:10:06,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:06,192 INFO L93 Difference]: Finished difference Result 200 states and 244 transitions. [2021-12-06 22:10:06,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:10:06,193 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 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 29 [2021-12-06 22:10:06,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:06,194 INFO L225 Difference]: With dead ends: 200 [2021-12-06 22:10:06,194 INFO L226 Difference]: Without dead ends: 200 [2021-12-06 22:10:06,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:10:06,195 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 65 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:06,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 383 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:10:06,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-12-06 22:10:06,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 180. [2021-12-06 22:10:06,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 140 states have (on average 1.6) internal successors, (224), 179 states have internal predecessors, (224), 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 22:10:06,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 224 transitions. [2021-12-06 22:10:06,200 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 224 transitions. Word has length 29 [2021-12-06 22:10:06,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:06,200 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 224 transitions. [2021-12-06 22:10:06,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.625) internal successors, (29), 9 states have internal predecessors, (29), 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 22:10:06,201 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 224 transitions. [2021-12-06 22:10:06,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 22:10:06,201 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:06,201 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:06,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 22:10:06,202 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:06,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:06,202 INFO L85 PathProgramCache]: Analyzing trace with hash 653860756, now seen corresponding path program 1 times [2021-12-06 22:10:06,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:06,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961532591] [2021-12-06 22:10:06,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:06,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:06,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 22:10:06,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:06,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961532591] [2021-12-06 22:10:06,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961532591] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:06,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:06,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:10:06,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537300749] [2021-12-06 22:10:06,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:06,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 22:10:06,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:06,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 22:10:06,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 22:10:06,237 INFO L87 Difference]: Start difference. First operand 180 states and 224 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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 22:10:06,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:06,334 INFO L93 Difference]: Finished difference Result 251 states and 315 transitions. [2021-12-06 22:10:06,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:10:06,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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 22:10:06,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:06,335 INFO L225 Difference]: With dead ends: 251 [2021-12-06 22:10:06,335 INFO L226 Difference]: Without dead ends: 251 [2021-12-06 22:10:06,335 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 22:10:06,336 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 77 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 230 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:06,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 230 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:10:06,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-12-06 22:10:06,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 184. [2021-12-06 22:10:06,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 146 states have (on average 1.6095890410958904) internal successors, (235), 183 states have internal predecessors, (235), 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 22:10:06,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 235 transitions. [2021-12-06 22:10:06,339 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 235 transitions. Word has length 30 [2021-12-06 22:10:06,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:06,339 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 235 transitions. [2021-12-06 22:10:06,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 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 22:10:06,340 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 235 transitions. [2021-12-06 22:10:06,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-06 22:10:06,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:06,340 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:06,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 22:10:06,340 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr56REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:06,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:06,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1294968215, now seen corresponding path program 1 times [2021-12-06 22:10:06,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:06,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877997464] [2021-12-06 22:10:06,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:06,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:06,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:06,545 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:06,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:06,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877997464] [2021-12-06 22:10:06,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877997464] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:10:06,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1847689415] [2021-12-06 22:10:06,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:06,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:10:06,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:10:06,546 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:10:06,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:10:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:06,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-06 22:10:06,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:10:06,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2021-12-06 22:10:06,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2021-12-06 22:10:06,692 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 22:10:06,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 22:10:06,752 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 22:10:06,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 22:10:06,775 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-06 22:10:06,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-12-06 22:10:06,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-12-06 22:10:06,862 INFO L354 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2021-12-06 22:10:06,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 36 [2021-12-06 22:10:07,108 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 22:10:07,509 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:10:07,518 INFO L354 Elim1Store]: treesize reduction 19, result has 29.6 percent of original size [2021-12-06 22:10:07,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 76 treesize of output 48 [2021-12-06 22:10:07,532 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:10:07,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-12-06 22:10:07,541 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:10:07,541 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 22:10:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:07,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:10:07,762 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 10 treesize of output 8 [2021-12-06 22:10:10,273 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-12-06 22:10:10,274 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 72 [2021-12-06 22:10:10,445 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 57 treesize of output 53 [2021-12-06 22:10:10,609 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~lItem~0#1.base| Int)) (let ((.cse0 (select v_arrayElimArr_1 4))) (or (not (= |c_ULTIMATE.start_main_~item~0#1.base| (select v_arrayElimArr_1 (+ |c_ULTIMATE.start_main_~lItem~0#1.offset| 4)))) (= |ULTIMATE.start_main_~lItem~0#1.base| .cse0) (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1) .cse0) 0) 0)))) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_arrayElimCell_16 Int) (v_ArrVal_422 (Array Int Int))) (let ((.cse1 (= |c_ULTIMATE.start_main_~lItem~0#1.offset| 0))) (let ((.cse2 (not .cse1)) (.cse3 (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_422))) (or (and (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) .cse1) (and .cse2 (= (select (select .cse3 v_arrayElimCell_16) 0) 0)) (and (= |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimCell_16) .cse2) (and (= (select (select .cse3 |c_ULTIMATE.start_main_~item~0#1.base|) 0) 0) .cse1)))))) is different from false [2021-12-06 22:10:10,793 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~lItem~0#1.base| Int)) (let ((.cse0 (select v_arrayElimArr_1 4))) (or (= |ULTIMATE.start_main_~lItem~0#1.base| .cse0) (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1) .cse0) 0) 0) (not (= |c_ULTIMATE.start_main_~item~0#1.base| .cse0))))) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_422 (Array Int Int))) (or (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_422) |c_ULTIMATE.start_main_~item~0#1.base|) 0) 0)))) is different from false [2021-12-06 22:10:10,817 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_415 Int) (v_ArrVal_422 (Array Int Int))) (or (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) (= 0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_415)) |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_422) |c_ULTIMATE.start_main_~item~0#1.base|) 0)))) (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_418 Int)) (let ((.cse0 (select v_arrayElimArr_1 4))) (or (= 0 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_418)) |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1) .cse0) 0)) (= |ULTIMATE.start_main_~lItem~0#1.base| .cse0) (not (= |c_ULTIMATE.start_main_~item~0#1.base| .cse0)))))) is different from false [2021-12-06 22:10:10,856 INFO L354 Elim1Store]: treesize reduction 23, result has 50.0 percent of original size [2021-12-06 22:10:10,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 35 [2021-12-06 22:10:10,858 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:10:10,862 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-12-06 22:10:10,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 11 [2021-12-06 22:10:10,867 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:10:10,868 INFO L354 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-12-06 22:10:10,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 1 [2021-12-06 22:10:10,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:10,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1847689415] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:10:10,873 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:10:10,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 18, 18] total 41 [2021-12-06 22:10:10,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365866887] [2021-12-06 22:10:10,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:10:10,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-06 22:10:10,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:10,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-06 22:10:10,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1237, Unknown=8, NotChecked=222, Total=1640 [2021-12-06 22:10:10,875 INFO L87 Difference]: Start difference. First operand 184 states and 235 transitions. Second operand has 41 states, 41 states have (on average 1.8048780487804879) internal successors, (74), 41 states have internal predecessors, (74), 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 22:10:10,896 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~item~0#1.offset| 0) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_415 Int) (v_ArrVal_422 (Array Int Int))) (or (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) (= 0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_415)) |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_422) |c_ULTIMATE.start_main_~item~0#1.base|) 0)))) (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) 0) (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_418 Int)) (let ((.cse0 (select v_arrayElimArr_1 4))) (or (= 0 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_418)) |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1) .cse0) 0)) (= |ULTIMATE.start_main_~lItem~0#1.base| .cse0) (not (= |c_ULTIMATE.start_main_~item~0#1.base| .cse0))))) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) 0) (= (select |c_#valid| |c_ULTIMATE.start_main_~item~0#1.base|) 1)) is different from false [2021-12-06 22:10:10,899 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~lItem~0#1.base| Int)) (let ((.cse0 (select v_arrayElimArr_1 4))) (or (= |ULTIMATE.start_main_~lItem~0#1.base| .cse0) (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1) .cse0) 0) 0) (not (= |c_ULTIMATE.start_main_~item~0#1.base| .cse0))))) (= |c_ULTIMATE.start_main_~item~0#1.offset| 0) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_422 (Array Int Int))) (or (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) (= (select (select (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_422) |c_ULTIMATE.start_main_~item~0#1.base|) 0) 0))) (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) 0) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) 0) (= (select |c_#valid| |c_ULTIMATE.start_main_~item~0#1.base|) 1)) is different from false [2021-12-06 22:10:10,903 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~item~0#1.offset| 0) (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~lItem~0#1.base| Int)) (let ((.cse0 (select v_arrayElimArr_1 4))) (or (not (= |c_ULTIMATE.start_main_~item~0#1.base| (select v_arrayElimArr_1 (+ |c_ULTIMATE.start_main_~lItem~0#1.offset| 4)))) (= |ULTIMATE.start_main_~lItem~0#1.base| .cse0) (= (select (select (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1) .cse0) 0) 0)))) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_arrayElimCell_16 Int) (v_ArrVal_422 (Array Int Int))) (let ((.cse1 (= |c_ULTIMATE.start_main_~lItem~0#1.offset| 0))) (let ((.cse2 (not .cse1)) (.cse3 (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_422))) (or (and (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) .cse1) (and .cse2 (= (select (select .cse3 v_arrayElimCell_16) 0) 0)) (and (= |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimCell_16) .cse2) (and (= (select (select .cse3 |c_ULTIMATE.start_main_~item~0#1.base|) 0) 0) .cse1))))) (not (= |c_ULTIMATE.start_main_~item~0#1.base| |c_ULTIMATE.start_main_~lItem~0#1.base|)) (= |c_ULTIMATE.start_main_~lItem~0#1.offset| 0) (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) 0) (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) 0)) is different from false [2021-12-06 22:10:10,999 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (= |c_ULTIMATE.start_main_~item~0#1.offset| 0)) (.cse2 (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) 0)) (.cse4 (= (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) |c_ULTIMATE.start_main_~item~0#1.offset|) 0)) (.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~data~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~data~0#1.offset|)))) (and .cse0 (= (select (select |c_#memory_$Pointer$.offset| .cse1) 0) 0) (= 0 |c_ULTIMATE.start_main_~data~0#1.offset|) (forall ((|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_415 Int) (v_ArrVal_422 (Array Int Int))) (or (= |c_ULTIMATE.start_main_~item~0#1.base| |ULTIMATE.start_main_~lItem~0#1.base|) (= 0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_415)) |ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_422) |c_ULTIMATE.start_main_~item~0#1.base|) 0)))) .cse2 (forall ((v_arrayElimArr_1 (Array Int Int)) (|ULTIMATE.start_main_~lItem~0#1.base| Int) (v_ArrVal_418 Int)) (let ((.cse3 (select v_arrayElimArr_1 4))) (or (= 0 (select (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~item~0#1.base|) (+ 4 |c_ULTIMATE.start_main_~item~0#1.offset|) v_ArrVal_418)) |ULTIMATE.start_main_~lItem~0#1.base| v_arrayElimArr_1) .cse3) 0)) (= |ULTIMATE.start_main_~lItem~0#1.base| .cse3) (not (= |c_ULTIMATE.start_main_~item~0#1.base| .cse3))))) (or (not .cse0) (and .cse2 .cse4)) .cse4 (= (select (select |c_#memory_$Pointer$.base| .cse1) 0) 0) (= (select |c_#valid| |c_ULTIMATE.start_main_~item~0#1.base|) 1))) is different from false [2021-12-06 22:10:11,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:11,417 INFO L93 Difference]: Finished difference Result 209 states and 261 transitions. [2021-12-06 22:10:11,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 22:10:11,417 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.8048780487804879) internal successors, (74), 41 states have internal predecessors, (74), 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 32 [2021-12-06 22:10:11,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:11,418 INFO L225 Difference]: With dead ends: 209 [2021-12-06 22:10:11,418 INFO L226 Difference]: Without dead ends: 209 [2021-12-06 22:10:11,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 715 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=287, Invalid=1891, Unknown=12, NotChecked=672, Total=2862 [2021-12-06 22:10:11,421 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 195 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 1401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 725 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:11,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 1270 Invalid, 1401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 638 Invalid, 0 Unknown, 725 Unchecked, 0.3s Time] [2021-12-06 22:10:11,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-12-06 22:10:11,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 186. [2021-12-06 22:10:11,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 148 states have (on average 1.6013513513513513) internal successors, (237), 185 states have internal predecessors, (237), 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 22:10:11,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 237 transitions. [2021-12-06 22:10:11,426 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 237 transitions. Word has length 32 [2021-12-06 22:10:11,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:11,426 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 237 transitions. [2021-12-06 22:10:11,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.8048780487804879) internal successors, (74), 41 states have internal predecessors, (74), 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 22:10:11,427 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 237 transitions. [2021-12-06 22:10:11,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-06 22:10:11,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:11,427 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:11,449 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-06 22:10:11,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:10:11,628 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr61ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:11,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:11,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1489307653, now seen corresponding path program 1 times [2021-12-06 22:10:11,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:11,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756628867] [2021-12-06 22:10:11,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:11,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:11,877 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 22:10:11,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:11,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756628867] [2021-12-06 22:10:11,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756628867] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:10:11,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94850119] [2021-12-06 22:10:11,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:11,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:10:11,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:10:11,878 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:10:11,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:10:11,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:11,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-06 22:10:11,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:10:11,976 INFO L354 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2021-12-06 22:10:11,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2021-12-06 22:10:12,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2021-12-06 22:10:12,067 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:10:12,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 19 [2021-12-06 22:10:12,149 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 22:10:12,259 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 22:10:12,259 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-06 22:10:12,335 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 22:10:12,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:10:12,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 118 treesize of output 100 [2021-12-06 22:10:12,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 92 treesize of output 80 [2021-12-06 22:10:24,677 WARN L227 SmtUtils]: Spent 11.33s on a formula simplification. DAG size of input: 50 DAG size of output: 47 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 22:10:29,105 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 22:10:29,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94850119] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:10:29,105 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:10:29,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 34 [2021-12-06 22:10:29,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427248393] [2021-12-06 22:10:29,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:10:29,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-06 22:10:29,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:29,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-06 22:10:29,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1077, Unknown=0, NotChecked=0, Total=1190 [2021-12-06 22:10:29,107 INFO L87 Difference]: Start difference. First operand 186 states and 237 transitions. Second operand has 35 states, 34 states have (on average 2.588235294117647) internal successors, (88), 35 states have internal predecessors, (88), 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 22:10:29,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:29,834 INFO L93 Difference]: Finished difference Result 200 states and 250 transitions. [2021-12-06 22:10:29,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 22:10:29,834 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.588235294117647) internal successors, (88), 35 states have internal predecessors, (88), 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 22:10:29,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:29,835 INFO L225 Difference]: With dead ends: 200 [2021-12-06 22:10:29,835 INFO L226 Difference]: Without dead ends: 183 [2021-12-06 22:10:29,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 16.3s TimeCoverageRelationStatistics Valid=260, Invalid=1720, Unknown=0, NotChecked=0, Total=1980 [2021-12-06 22:10:29,837 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 91 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1135 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 744 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:29,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 1135 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 676 Invalid, 0 Unknown, 744 Unchecked, 0.3s Time] [2021-12-06 22:10:29,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-12-06 22:10:29,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 171. [2021-12-06 22:10:29,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 133 states have (on average 1.6616541353383458) internal successors, (221), 170 states have internal predecessors, (221), 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 22:10:29,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 221 transitions. [2021-12-06 22:10:29,840 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 221 transitions. Word has length 33 [2021-12-06 22:10:29,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:29,841 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 221 transitions. [2021-12-06 22:10:29,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.588235294117647) internal successors, (88), 35 states have internal predecessors, (88), 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 22:10:29,841 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 221 transitions. [2021-12-06 22:10:29,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 22:10:29,841 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:29,841 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 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 22:10:29,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 22:10:30,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:10:30,043 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:30,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:30,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1756679628, now seen corresponding path program 1 times [2021-12-06 22:10:30,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:30,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152601144] [2021-12-06 22:10:30,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:30,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,176 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:30,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:30,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152601144] [2021-12-06 22:10:30,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152601144] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:10:30,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920493438] [2021-12-06 22:10:30,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:30,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:10:30,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:10:30,178 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:10:30,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:10:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 22:10:30,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:10:30,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2021-12-06 22:10:30,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2021-12-06 22:10:30,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:30,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 52 [2021-12-06 22:10:30,342 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-12-06 22:10:30,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 38 [2021-12-06 22:10:30,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 31 treesize of output 19 [2021-12-06 22:10:30,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-12-06 22:10:30,455 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:30,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:10:30,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920493438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:30,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:10:30,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 17 [2021-12-06 22:10:30,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851364641] [2021-12-06 22:10:30,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:30,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 22:10:30,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:30,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 22:10:30,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:10:30,457 INFO L87 Difference]: Start difference. First operand 171 states and 221 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 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 22:10:30,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:30,687 INFO L93 Difference]: Finished difference Result 210 states and 237 transitions. [2021-12-06 22:10:30,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:10:30,687 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 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 37 [2021-12-06 22:10:30,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:30,688 INFO L225 Difference]: With dead ends: 210 [2021-12-06 22:10:30,688 INFO L226 Difference]: Without dead ends: 210 [2021-12-06 22:10:30,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2021-12-06 22:10:30,689 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 261 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 331 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:30,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 510 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 331 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:10:30,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-12-06 22:10:30,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 171. [2021-12-06 22:10:30,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 133 states have (on average 1.6541353383458646) internal successors, (220), 170 states have internal predecessors, (220), 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 22:10:30,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 220 transitions. [2021-12-06 22:10:30,692 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 220 transitions. Word has length 37 [2021-12-06 22:10:30,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:30,692 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 220 transitions. [2021-12-06 22:10:30,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 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 22:10:30,692 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 220 transitions. [2021-12-06 22:10:30,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-06 22:10:30,692 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:30,692 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 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 22:10:30,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:10:30,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-12-06 22:10:30,893 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:30,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:30,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1756679629, now seen corresponding path program 1 times [2021-12-06 22:10:30,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:30,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290898772] [2021-12-06 22:10:30,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:30,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:30,961 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:30,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:30,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290898772] [2021-12-06 22:10:30,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290898772] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:10:30,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308080863] [2021-12-06 22:10:30,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:30,962 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:10:30,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:10:30,963 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:10:30,963 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:10:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:31,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 22:10:31,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:10:31,069 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 22:10:31,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2021-12-06 22:10:31,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2021-12-06 22:10:31,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:31,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 46 [2021-12-06 22:10:31,159 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-12-06 22:10:31,159 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 27 [2021-12-06 22:10:31,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2021-12-06 22:10:31,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 25 treesize of output 13 [2021-12-06 22:10:31,250 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:31,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:10:31,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308080863] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:31,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:10:31,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2021-12-06 22:10:31,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225015129] [2021-12-06 22:10:31,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:31,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 22:10:31,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:31,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 22:10:31,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:10:31,251 INFO L87 Difference]: Start difference. First operand 171 states and 220 transitions. Second operand has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 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 22:10:31,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:31,466 INFO L93 Difference]: Finished difference Result 196 states and 223 transitions. [2021-12-06 22:10:31,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:10:31,466 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 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 37 [2021-12-06 22:10:31,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:31,467 INFO L225 Difference]: With dead ends: 196 [2021-12-06 22:10:31,467 INFO L226 Difference]: Without dead ends: 196 [2021-12-06 22:10:31,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2021-12-06 22:10:31,468 INFO L933 BasicCegarLoop]: 98 mSDtfsCounter, 250 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:31,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 430 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:10:31,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-12-06 22:10:31,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 171. [2021-12-06 22:10:31,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 133 states have (on average 1.6466165413533835) internal successors, (219), 170 states have internal predecessors, (219), 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 22:10:31,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 219 transitions. [2021-12-06 22:10:31,471 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 219 transitions. Word has length 37 [2021-12-06 22:10:31,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:31,471 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 219 transitions. [2021-12-06 22:10:31,471 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 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 22:10:31,471 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 219 transitions. [2021-12-06 22:10:31,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 22:10:31,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:31,472 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:31,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 22:10:31,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:10:31,672 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr56REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:31,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:31,672 INFO L85 PathProgramCache]: Analyzing trace with hash 507133380, now seen corresponding path program 1 times [2021-12-06 22:10:31,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:31,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982633476] [2021-12-06 22:10:31,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:31,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:31,735 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:31,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:31,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982633476] [2021-12-06 22:10:31,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982633476] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:10:31,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246130570] [2021-12-06 22:10:31,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:31,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:10:31,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:10:31,736 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:10:31,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 22:10:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:31,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-06 22:10:31,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:10:31,826 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 22:10:31,846 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-06 22:10:31,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-06 22:10:31,857 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 22:10:31,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 22:10:31,866 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 22:10:31,875 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:10:31,875 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2021-12-06 22:10:31,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 8 [2021-12-06 22:10:31,890 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:31,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:10:31,906 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_887 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~lItem~0#1.base| v_ArrVal_887) |c_ULTIMATE.start_main_~data~0#1.base|) |c_ULTIMATE.start_main_~data~0#1.offset|) |c_ULTIMATE.start_main_~data~0#1.base|))) is different from false [2021-12-06 22:10:31,910 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:10:31,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 20 [2021-12-06 22:10:31,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 33 treesize of output 25 [2021-12-06 22:10:31,914 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 6 treesize of output 4 [2021-12-06 22:10:31,969 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-12-06 22:10:31,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246130570] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:10:31,969 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:10:31,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2021-12-06 22:10:31,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099986665] [2021-12-06 22:10:31,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:10:31,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:10:31,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:31,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:10:31,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=84, Unknown=1, NotChecked=18, Total=132 [2021-12-06 22:10:31,970 INFO L87 Difference]: Start difference. First operand 171 states and 219 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 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 22:10:32,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:32,149 INFO L93 Difference]: Finished difference Result 171 states and 216 transitions. [2021-12-06 22:10:32,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:10:32,149 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 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 40 [2021-12-06 22:10:32,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:32,150 INFO L225 Difference]: With dead ends: 171 [2021-12-06 22:10:32,150 INFO L226 Difference]: Without dead ends: 171 [2021-12-06 22:10:32,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=251, Unknown=1, NotChecked=34, Total=380 [2021-12-06 22:10:32,150 INFO L933 BasicCegarLoop]: 88 mSDtfsCounter, 89 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:32,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 492 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 348 Invalid, 0 Unknown, 76 Unchecked, 0.1s Time] [2021-12-06 22:10:32,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-12-06 22:10:32,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 167. [2021-12-06 22:10:32,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 129 states have (on average 1.6589147286821706) internal successors, (214), 166 states have internal predecessors, (214), 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 22:10:32,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 214 transitions. [2021-12-06 22:10:32,155 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 214 transitions. Word has length 40 [2021-12-06 22:10:32,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:32,155 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 214 transitions. [2021-12-06 22:10:32,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 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 22:10:32,155 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 214 transitions. [2021-12-06 22:10:32,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 22:10:32,156 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:32,156 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 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] [2021-12-06 22:10:32,175 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 22:10:32,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-06 22:10:32,357 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:32,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:32,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1119299147, now seen corresponding path program 1 times [2021-12-06 22:10:32,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:32,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895259812] [2021-12-06 22:10:32,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:32,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:32,490 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 22:10:32,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:32,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895259812] [2021-12-06 22:10:32,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895259812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:32,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:10:32,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 22:10:32,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300523513] [2021-12-06 22:10:32,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:32,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:10:32,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:32,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:10:32,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:10:32,493 INFO L87 Difference]: Start difference. First operand 167 states and 214 transitions. Second operand has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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 22:10:32,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:32,607 INFO L93 Difference]: Finished difference Result 166 states and 212 transitions. [2021-12-06 22:10:32,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 22:10:32,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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 22:10:32,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:32,608 INFO L225 Difference]: With dead ends: 166 [2021-12-06 22:10:32,608 INFO L226 Difference]: Without dead ends: 166 [2021-12-06 22:10:32,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 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 22:10:32,609 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 25 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:32,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 305 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:10:32,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-12-06 22:10:32,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-12-06 22:10:32,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 129 states have (on average 1.6434108527131783) internal successors, (212), 165 states have internal predecessors, (212), 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 22:10:32,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 212 transitions. [2021-12-06 22:10:32,612 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 212 transitions. Word has length 41 [2021-12-06 22:10:32,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:32,612 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 212 transitions. [2021-12-06 22:10:32,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 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 22:10:32,612 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 212 transitions. [2021-12-06 22:10:32,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 22:10:32,613 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:32,613 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 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] [2021-12-06 22:10:32,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 22:10:32,613 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:32,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:32,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1119299146, now seen corresponding path program 1 times [2021-12-06 22:10:32,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:32,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876386438] [2021-12-06 22:10:32,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:32,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:32,717 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:32,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:32,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876386438] [2021-12-06 22:10:32,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876386438] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:10:32,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249586032] [2021-12-06 22:10:32,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:32,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:10:32,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:10:32,718 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:10:32,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 22:10:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:32,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-06 22:10:32,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:10:32,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2021-12-06 22:10:32,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:32,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-12-06 22:10:33,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 23 treesize of output 15 [2021-12-06 22:10:33,005 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 26 treesize of output 14 [2021-12-06 22:10:33,029 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:33,029 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:10:33,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249586032] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:10:33,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:10:33,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 21 [2021-12-06 22:10:33,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16908541] [2021-12-06 22:10:33,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:10:33,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 22:10:33,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:33,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 22:10:33,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2021-12-06 22:10:33,030 INFO L87 Difference]: Start difference. First operand 166 states and 212 transitions. Second operand has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 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 22:10:33,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:33,261 INFO L93 Difference]: Finished difference Result 226 states and 253 transitions. [2021-12-06 22:10:33,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:10:33,261 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 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 22:10:33,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:33,262 INFO L225 Difference]: With dead ends: 226 [2021-12-06 22:10:33,262 INFO L226 Difference]: Without dead ends: 226 [2021-12-06 22:10:33,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=660, Unknown=0, NotChecked=0, Total=812 [2021-12-06 22:10:33,263 INFO L933 BasicCegarLoop]: 77 mSDtfsCounter, 458 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 458 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:33,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [458 Valid, 372 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:10:33,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-12-06 22:10:33,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 166. [2021-12-06 22:10:33,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 129 states have (on average 1.627906976744186) internal successors, (210), 165 states have internal predecessors, (210), 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 22:10:33,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 210 transitions. [2021-12-06 22:10:33,266 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 210 transitions. Word has length 41 [2021-12-06 22:10:33,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:33,266 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 210 transitions. [2021-12-06 22:10:33,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 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 22:10:33,267 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 210 transitions. [2021-12-06 22:10:33,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 22:10:33,267 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:33,267 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 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] [2021-12-06 22:10:33,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 22:10:33,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-06 22:10:33,468 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:33,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:33,468 INFO L85 PathProgramCache]: Analyzing trace with hash -716785192, now seen corresponding path program 1 times [2021-12-06 22:10:33,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:33,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145388267] [2021-12-06 22:10:33,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:33,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:33,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:33,551 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:33,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:33,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145388267] [2021-12-06 22:10:33,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145388267] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:10:33,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898346071] [2021-12-06 22:10:33,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:33,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:10:33,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:10:33,553 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:10:33,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 22:10:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:33,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 22:10:33,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:10:33,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2021-12-06 22:10:33,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:33,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-12-06 22:10:33,763 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 15 treesize of output 7 [2021-12-06 22:10:33,775 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:33,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:10:33,922 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:33,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898346071] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:10:33,922 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:10:33,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2021-12-06 22:10:33,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045432337] [2021-12-06 22:10:33,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:10:33,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 22:10:33,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:10:33,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 22:10:33,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-12-06 22:10:33,925 INFO L87 Difference]: Start difference. First operand 166 states and 210 transitions. Second operand has 19 states, 18 states have (on average 5.277777777777778) internal successors, (95), 19 states have internal predecessors, (95), 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 22:10:34,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:10:34,335 INFO L93 Difference]: Finished difference Result 186 states and 212 transitions. [2021-12-06 22:10:34,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 22:10:34,335 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.277777777777778) internal successors, (95), 19 states have internal predecessors, (95), 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 45 [2021-12-06 22:10:34,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:10:34,336 INFO L225 Difference]: With dead ends: 186 [2021-12-06 22:10:34,336 INFO L226 Difference]: Without dead ends: 186 [2021-12-06 22:10:34,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=341, Invalid=1219, Unknown=0, NotChecked=0, Total=1560 [2021-12-06 22:10:34,337 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 406 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:10:34,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [406 Valid, 762 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 602 Invalid, 0 Unknown, 74 Unchecked, 0.2s Time] [2021-12-06 22:10:34,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-12-06 22:10:34,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 166. [2021-12-06 22:10:34,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 129 states have (on average 1.62015503875969) internal successors, (209), 165 states have internal predecessors, (209), 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 22:10:34,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 209 transitions. [2021-12-06 22:10:34,340 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 209 transitions. Word has length 45 [2021-12-06 22:10:34,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:10:34,341 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 209 transitions. [2021-12-06 22:10:34,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.277777777777778) internal successors, (95), 19 states have internal predecessors, (95), 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 22:10:34,341 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 209 transitions. [2021-12-06 22:10:34,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 22:10:34,341 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:10:34,341 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:10:34,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 22:10:34,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-06 22:10:34,543 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 58 more)] === [2021-12-06 22:10:34,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:10:34,544 INFO L85 PathProgramCache]: Analyzing trace with hash 829868235, now seen corresponding path program 1 times [2021-12-06 22:10:34,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:10:34,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507843791] [2021-12-06 22:10:34,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:34,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:10:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:34,834 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:34,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:10:34,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507843791] [2021-12-06 22:10:34,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507843791] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:10:34,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201486438] [2021-12-06 22:10:34,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:10:34,835 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:10:34,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:10:34,836 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:10:34,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07c2d62f-6a69-4f0f-add7-85922a643f8a/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 22:10:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:10:34,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 61 conjunts are in the unsatisfiable core [2021-12-06 22:10:34,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:10:34,931 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 22:10:34,942 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-06 22:10:34,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-06 22:10:34,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 11 treesize of output 7 [2021-12-06 22:10:35,016 INFO L354 Elim1Store]: treesize reduction 60, result has 31.0 percent of original size [2021-12-06 22:10:35,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 41 [2021-12-06 22:10:35,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-12-06 22:10:35,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-12-06 22:10:35,118 INFO L354 Elim1Store]: treesize reduction 78, result has 31.6 percent of original size [2021-12-06 22:10:35,118 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 31 treesize of output 53 [2021-12-06 22:10:35,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2021-12-06 22:10:35,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:35,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2021-12-06 22:10:35,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:35,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:35,312 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-12-06 22:10:35,312 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 48 [2021-12-06 22:10:35,760 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:10:35,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:10:35,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 33 [2021-12-06 22:10:35,765 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-06 22:10:36,020 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-06 22:10:36,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 33 [2021-12-06 22:10:36,069 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:10:36,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:10:36,407 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 30 treesize of output 18 [2021-12-06 22:10:43,077 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:10:43,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 412 treesize of output 262 [2021-12-06 22:10:43,082 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:10:43,099 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:10:43,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 2064 treesize of output 2046 [2021-12-06 22:10:43,111 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:10:43,124 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:10:43,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 3046 treesize of output 2870 [2021-12-06 22:10:43,143 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:10:43,150 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 2099 treesize of output 2067 [2021-12-06 22:11:11,606 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 8 treesize of output 4 [2021-12-06 22:11:42,950 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 22:11:42,956 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 22:11:42,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 58