./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_fib_longer-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_fib_longer-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6c9b52ffa673147438276e1d7b786b060eda002f60ced6e1594740d0a0004b3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:51:36,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:51:36,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:51:36,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:51:36,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:51:36,888 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:51:36,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:51:36,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:51:36,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:51:36,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:51:36,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:51:36,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:51:36,905 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:51:36,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:51:36,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:51:36,916 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:51:36,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:51:36,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:51:36,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:51:36,937 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:51:36,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:51:36,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:51:36,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:51:36,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:51:36,954 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:51:36,955 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:51:36,955 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:51:36,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:51:36,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:51:36,959 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:51:36,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:51:36,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:51:36,963 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:51:36,964 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:51:36,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:51:36,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:51:36,968 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:51:36,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:51:36,969 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:51:36,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:51:36,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:51:36,973 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:51:37,023 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:51:37,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:51:37,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:51:37,024 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:51:37,025 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:51:37,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:51:37,026 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:51:37,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:51:37,027 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:51:37,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:51:37,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:51:37,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:51:37,031 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:51:37,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:51:37,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:51:37,032 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:51:37,033 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:51:37,033 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:51:37,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:51:37,034 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:51:37,034 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:51:37,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:51:37,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:51:37,035 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:51:37,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:51:37,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:51:37,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:51:37,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:51:37,038 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:51:37,038 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:51:37,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:51:37,039 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:51:37,039 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_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6c9b52ffa673147438276e1d7b786b060eda002f60ced6e1594740d0a0004b3 [2021-11-23 13:51:37,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:51:37,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:51:37,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:51:37,456 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:51:37,457 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:51:37,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/seq-pthread/cs_fib_longer-1.i [2021-11-23 13:51:37,543 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/data/9afcc87f2/15b6d350b77b4352a0acc31304f2043a/FLAG1c6084680 [2021-11-23 13:51:38,275 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:51:38,276 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/sv-benchmarks/c/seq-pthread/cs_fib_longer-1.i [2021-11-23 13:51:38,297 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/data/9afcc87f2/15b6d350b77b4352a0acc31304f2043a/FLAG1c6084680 [2021-11-23 13:51:38,474 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/data/9afcc87f2/15b6d350b77b4352a0acc31304f2043a [2021-11-23 13:51:38,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:51:38,481 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:51:38,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:51:38,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:51:38,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:51:38,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:51:38" (1/1) ... [2021-11-23 13:51:38,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65d7de2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:38, skipping insertion in model container [2021-11-23 13:51:38,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:51:38" (1/1) ... [2021-11-23 13:51:38,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:51:38,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:51:38,982 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/sv-benchmarks/c/seq-pthread/cs_fib_longer-1.i[23609,23622] [2021-11-23 13:51:39,186 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:51:39,204 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:51:39,237 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/sv-benchmarks/c/seq-pthread/cs_fib_longer-1.i[23609,23622] [2021-11-23 13:51:39,333 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:51:39,399 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:51:39,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:39 WrapperNode [2021-11-23 13:51:39,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:51:39,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:51:39,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:51:39,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:51:39,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:39" (1/1) ... [2021-11-23 13:51:39,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:39" (1/1) ... [2021-11-23 13:51:39,574 INFO L137 Inliner]: procedures = 144, calls = 395, calls flagged for inlining = 77, calls inlined = 165, statements flattened = 2058 [2021-11-23 13:51:39,574 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:51:39,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:51:39,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:51:39,575 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:51:39,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:39" (1/1) ... [2021-11-23 13:51:39,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:39" (1/1) ... [2021-11-23 13:51:39,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:39" (1/1) ... [2021-11-23 13:51:39,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:39" (1/1) ... [2021-11-23 13:51:39,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:39" (1/1) ... [2021-11-23 13:51:39,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:39" (1/1) ... [2021-11-23 13:51:39,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:39" (1/1) ... [2021-11-23 13:51:39,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:51:39,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:51:39,855 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:51:39,855 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:51:39,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:39" (1/1) ... [2021-11-23 13:51:39,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:51:39,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:51:39,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:51:39,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:51:40,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:51:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 13:51:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:51:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:51:40,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 13:51:40,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 13:51:40,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:51:40,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:51:40,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:51:40,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:51:40,392 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:51:40,394 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:51:40,428 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 13:51:40,429 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 13:51:40,456 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 13:51:40,457 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 13:51:40,483 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 13:51:40,484 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 13:51:46,634 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-12: assume 0 != __CS_cs_#t~nondet4#1 && 6 == ~__CS_round~0 % 256;__CS_cs_#t~ite5#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 13:51:46,634 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-12: assume !(0 != __CS_cs_#t~nondet4#1 && 6 == ~__CS_round~0 % 256);__CS_cs_#t~ite5#1 := ~__CS_ret~0 % 256; [2021-11-23 13:51:46,634 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-14: ~__CS_ret~0 := __CS_cs_#t~ite5#1;havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2021-11-23 13:51:46,634 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-15: assume 0 != __CS_cs_#t~nondet4#1 && 6 == ~__CS_round~0 % 256;__CS_cs_#t~ite5#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 13:51:46,635 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-15: assume !(0 != __CS_cs_#t~nondet4#1 && 6 == ~__CS_round~0 % 256);__CS_cs_#t~ite5#1 := ~__CS_ret~0 % 256; [2021-11-23 13:51:46,635 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-17: ~__CS_ret~0 := __CS_cs_#t~ite5#1;havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2021-11-23 13:51:46,635 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-18: assume 0 != __CS_cs_#t~nondet4#1 && 6 == ~__CS_round~0 % 256;__CS_cs_#t~ite5#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 13:51:46,635 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-18: assume !(0 != __CS_cs_#t~nondet4#1 && 6 == ~__CS_round~0 % 256);__CS_cs_#t~ite5#1 := ~__CS_ret~0 % 256; [2021-11-23 13:51:46,635 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##203: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:51:46,635 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-20: ~__CS_ret~0 := __CS_cs_#t~ite5#1;havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2021-11-23 13:51:46,636 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-60: assume 0 != __CS_cs_#t~nondet4#1 && 6 == ~__CS_round~0 % 256;__CS_cs_#t~ite5#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 13:51:46,636 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-60: assume !(0 != __CS_cs_#t~nondet4#1 && 6 == ~__CS_round~0 % 256);__CS_cs_#t~ite5#1 := ~__CS_ret~0 % 256; [2021-11-23 13:51:46,636 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-62: ~__CS_ret~0 := __CS_cs_#t~ite5#1;havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2021-11-23 13:51:46,636 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-63: assume 0 != __CS_cs_#t~nondet4#1 && 6 == ~__CS_round~0 % 256;__CS_cs_#t~ite5#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 13:51:46,636 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-63: assume !(0 != __CS_cs_#t~nondet4#1 && 6 == ~__CS_round~0 % 256);__CS_cs_#t~ite5#1 := ~__CS_ret~0 % 256; [2021-11-23 13:51:46,636 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-65: ~__CS_ret~0 := __CS_cs_#t~ite5#1;havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2021-11-23 13:51:46,637 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-66: assume 0 != __CS_cs_#t~nondet4#1 && 6 == ~__CS_round~0 % 256;__CS_cs_#t~ite5#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 13:51:46,637 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-66: assume !(0 != __CS_cs_#t~nondet4#1 && 6 == ~__CS_round~0 % 256);__CS_cs_#t~ite5#1 := ~__CS_ret~0 % 256; [2021-11-23 13:51:46,637 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-68: ~__CS_ret~0 := __CS_cs_#t~ite5#1;havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2021-11-23 13:51:46,637 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-108: assume 0 != __CS_cs_#t~nondet4#1 && 6 == ~__CS_round~0 % 256;__CS_cs_#t~ite5#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 13:51:46,637 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-108: assume !(0 != __CS_cs_#t~nondet4#1 && 6 == ~__CS_round~0 % 256);__CS_cs_#t~ite5#1 := ~__CS_ret~0 % 256; [2021-11-23 13:51:46,637 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-110: ~__CS_ret~0 := __CS_cs_#t~ite5#1;havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2021-11-23 13:51:46,638 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-111: assume 0 != __CS_cs_#t~nondet4#1 && 6 == ~__CS_round~0 % 256;__CS_cs_#t~ite5#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 13:51:46,638 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-111: assume !(0 != __CS_cs_#t~nondet4#1 && 6 == ~__CS_round~0 % 256);__CS_cs_#t~ite5#1 := ~__CS_ret~0 % 256; [2021-11-23 13:51:46,638 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-113: ~__CS_ret~0 := __CS_cs_#t~ite5#1;havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2021-11-23 13:51:46,638 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-114: assume 0 != __CS_cs_#t~nondet4#1 && 6 == ~__CS_round~0 % 256;__CS_cs_#t~ite5#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 13:51:46,638 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-114: assume !(0 != __CS_cs_#t~nondet4#1 && 6 == ~__CS_round~0 % 256);__CS_cs_#t~ite5#1 := ~__CS_ret~0 % 256; [2021-11-23 13:51:46,638 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L567-116: ~__CS_ret~0 := __CS_cs_#t~ite5#1;havoc __CS_cs_#t~nondet4#1;havoc __CS_cs_#t~ite5#1; [2021-11-23 13:51:46,639 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##204: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:51:46,639 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##210: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:51:46,639 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##211: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:51:46,639 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L730: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2021-11-23 13:51:46,639 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L730: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 13:51:46,640 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L730-2: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2021-11-23 13:51:46,640 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L730-2: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 13:51:46,640 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L730-4: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2021-11-23 13:51:46,640 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L730-4: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 13:51:46,640 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-4: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;assume -2147483648 <= __CS_cs_#t~nondet4#1 && __CS_cs_#t~nondet4#1 <= 2147483647; [2021-11-23 13:51:46,641 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-5: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;assume -2147483648 <= __CS_cs_#t~nondet4#1 && __CS_cs_#t~nondet4#1 <= 2147483647; [2021-11-23 13:51:46,641 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-6: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;assume -2147483648 <= __CS_cs_#t~nondet4#1 && __CS_cs_#t~nondet4#1 <= 2147483647; [2021-11-23 13:51:46,641 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L732: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2021-11-23 13:51:46,642 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L732: assume !(0 != ~__CS_ret~0 % 256);assume { :begin_inline___CS_cs } true;havoc __CS_cs_#t~nondet3#1, __CS_cs_#t~nondet4#1, __CS_cs_#t~ite5#1, __CS_cs_~k~0#1;__CS_cs_~k~0#1 := __CS_cs_#t~nondet3#1;havoc __CS_cs_#t~nondet3#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 7 then 1 else 0);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; [2021-11-23 13:51:46,642 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L732-2: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2021-11-23 13:51:46,642 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L732-2: assume !(0 != ~__CS_ret~0 % 256);assume { :begin_inline___CS_cs } true;havoc __CS_cs_#t~nondet3#1, __CS_cs_#t~nondet4#1, __CS_cs_#t~ite5#1, __CS_cs_~k~0#1;__CS_cs_~k~0#1 := __CS_cs_#t~nondet3#1;havoc __CS_cs_#t~nondet3#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 7 then 1 else 0);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; [2021-11-23 13:51:46,642 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L732-4: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2021-11-23 13:51:46,643 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L732-4: assume !(0 != ~__CS_ret~0 % 256);assume { :begin_inline___CS_cs } true;havoc __CS_cs_#t~nondet3#1, __CS_cs_#t~nondet4#1, __CS_cs_#t~ite5#1, __CS_cs_~k~0#1;__CS_cs_~k~0#1 := __CS_cs_#t~nondet3#1;havoc __CS_cs_#t~nondet3#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 7 then 1 else 0);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; [2021-11-23 13:51:46,643 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-20: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;assume -2147483648 <= __CS_cs_#t~nondet4#1 && __CS_cs_#t~nondet4#1 <= 2147483647; [2021-11-23 13:51:46,643 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-21: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;assume -2147483648 <= __CS_cs_#t~nondet4#1 && __CS_cs_#t~nondet4#1 <= 2147483647; [2021-11-23 13:51:46,643 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-22: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;assume -2147483648 <= __CS_cs_#t~nondet4#1 && __CS_cs_#t~nondet4#1 <= 2147483647; [2021-11-23 13:51:46,644 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-36: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;assume -2147483648 <= __CS_cs_#t~nondet4#1 && __CS_cs_#t~nondet4#1 <= 2147483647; [2021-11-23 13:51:46,644 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-37: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;assume -2147483648 <= __CS_cs_#t~nondet4#1 && __CS_cs_#t~nondet4#1 <= 2147483647; [2021-11-23 13:51:46,644 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-38: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;assume -2147483648 <= __CS_cs_#t~nondet4#1 && __CS_cs_#t~nondet4#1 <= 2147483647; [2021-11-23 13:51:46,645 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-8: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:51:46,645 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-8: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:51:46,645 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-36: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:51:46,645 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-36: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:51:46,645 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L734: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2021-11-23 13:51:46,646 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L734: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 13:51:46,646 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L734-2: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2021-11-23 13:51:46,646 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L734-2: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 13:51:46,646 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L734-4: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset);havoc main_thread_~#id1~0#1.base, main_thread_~#id1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset);havoc main_thread_~#id2~0#1.base, main_thread_~#id2~0#1.offset; [2021-11-23 13:51:46,647 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L734-4: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 13:51:46,647 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-64: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:51:46,647 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-64: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:51:46,647 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##61: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:51:46,647 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##60: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:51:46,648 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:51:46,648 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:51:46,648 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L562-4: assume { :end_inline___CS_cs } true; [2021-11-23 13:51:46,648 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L562-5: assume { :end_inline___CS_cs } true; [2021-11-23 13:51:46,648 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L562-6: assume { :end_inline___CS_cs } true; [2021-11-23 13:51:46,649 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##353: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:51:46,649 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##354: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:51:46,649 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L562-20: assume { :end_inline___CS_cs } true; [2021-11-23 13:51:46,649 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L562-21: assume { :end_inline___CS_cs } true; [2021-11-23 13:51:46,650 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L562-22: assume { :end_inline___CS_cs } true; [2021-11-23 13:51:46,650 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L562-36: assume { :end_inline___CS_cs } true; [2021-11-23 13:51:46,650 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##360: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:51:46,650 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L562-37: assume { :end_inline___CS_cs } true; [2021-11-23 13:51:46,650 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L562-38: assume { :end_inline___CS_cs } true; [2021-11-23 13:51:46,651 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##361: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:51:46,651 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:51:46,669 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:51:46,669 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-23 13:51:46,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:51:46 BoogieIcfgContainer [2021-11-23 13:51:46,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:51:46,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:51:46,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:51:46,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:51:46,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:51:38" (1/3) ... [2021-11-23 13:51:46,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fcb79e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:51:46, skipping insertion in model container [2021-11-23 13:51:46,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:51:39" (2/3) ... [2021-11-23 13:51:46,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73fcb79e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:51:46, skipping insertion in model container [2021-11-23 13:51:46,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:51:46" (3/3) ... [2021-11-23 13:51:46,683 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_fib_longer-1.i [2021-11-23 13:51:46,690 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:51:46,690 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 13:51:46,753 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:51:46,762 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 13:51:46,762 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 13:51:46,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 422 states, 420 states have (on average 1.5071428571428571) internal successors, (633), 421 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:51:46,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-23 13:51:46,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:51:46,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:51:46,820 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:51:46,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:51:46,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1309294963, now seen corresponding path program 1 times [2021-11-23 13:51:46,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:51:46,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416125030] [2021-11-23 13:51:46,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:51:46,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:51:47,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:51:47,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:51:47,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:51:47,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416125030] [2021-11-23 13:51:47,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416125030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:51:47,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:51:47,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:51:47,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899160138] [2021-11-23 13:51:47,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:51:47,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:51:47,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:51:47,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:51:47,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:51:47,332 INFO L87 Difference]: Start difference. First operand has 422 states, 420 states have (on average 1.5071428571428571) internal successors, (633), 421 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:51:47,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:51:47,444 INFO L93 Difference]: Finished difference Result 846 states and 1272 transitions. [2021-11-23 13:51:47,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:51:47,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 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 108 [2021-11-23 13:51:47,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:51:47,465 INFO L225 Difference]: With dead ends: 846 [2021-11-23 13:51:47,465 INFO L226 Difference]: Without dead ends: 422 [2021-11-23 13:51:47,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:51:47,475 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 4 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1066 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:51:47,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1066 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:51:47,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-11-23 13:51:47,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 419. [2021-11-23 13:51:47,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 418 states have (on average 1.277511961722488) internal successors, (534), 418 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:51:47,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 534 transitions. [2021-11-23 13:51:47,551 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 534 transitions. Word has length 108 [2021-11-23 13:51:47,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:51:47,552 INFO L470 AbstractCegarLoop]: Abstraction has 419 states and 534 transitions. [2021-11-23 13:51:47,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:51:47,553 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 534 transitions. [2021-11-23 13:51:47,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 13:51:47,558 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:51:47,558 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:51:47,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:51:47,559 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:51:47,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:51:47,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1220127563, now seen corresponding path program 1 times [2021-11-23 13:51:47,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:51:47,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068631304] [2021-11-23 13:51:47,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:51:47,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:51:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:51:47,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:51:47,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:51:47,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068631304] [2021-11-23 13:51:47,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068631304] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:51:47,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:51:47,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:51:47,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084073131] [2021-11-23 13:51:47,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:51:47,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:51:47,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:51:47,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:51:47,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:51:47,748 INFO L87 Difference]: Start difference. First operand 419 states and 534 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:51:47,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:51:47,822 INFO L93 Difference]: Finished difference Result 837 states and 1068 transitions. [2021-11-23 13:51:47,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:51:47,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 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 111 [2021-11-23 13:51:47,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:51:47,840 INFO L225 Difference]: With dead ends: 837 [2021-11-23 13:51:47,842 INFO L226 Difference]: Without dead ends: 421 [2021-11-23 13:51:47,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:51:47,852 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 1 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1059 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:51:47,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1059 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:51:47,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2021-11-23 13:51:47,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 420. [2021-11-23 13:51:47,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 1.2768496420047732) internal successors, (535), 419 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:51:47,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 535 transitions. [2021-11-23 13:51:47,919 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 535 transitions. Word has length 111 [2021-11-23 13:51:47,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:51:47,920 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 535 transitions. [2021-11-23 13:51:47,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:51:47,921 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 535 transitions. [2021-11-23 13:51:47,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-23 13:51:47,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:51:47,926 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:51:47,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:51:47,927 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:51:47,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:51:47,928 INFO L85 PathProgramCache]: Analyzing trace with hash -106507059, now seen corresponding path program 1 times [2021-11-23 13:51:47,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:51:47,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667162798] [2021-11-23 13:51:47,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:51:47,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:51:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:51:48,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:51:48,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:51:48,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667162798] [2021-11-23 13:51:48,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667162798] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:51:48,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124375217] [2021-11-23 13:51:48,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:51:48,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:51:48,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:51:48,120 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:51:48,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 13:51:48,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:51:48,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:51:48,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:51:48,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:51:48,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:51:49,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:51:49,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124375217] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:51:49,325 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:51:49,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-11-23 13:51:49,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841157760] [2021-11-23 13:51:49,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:51:49,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:51:49,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:51:49,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:51:49,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:51:49,333 INFO L87 Difference]: Start difference. First operand 420 states and 535 transitions. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:51:49,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:51:49,413 INFO L93 Difference]: Finished difference Result 841 states and 1073 transitions. [2021-11-23 13:51:49,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:51:49,417 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 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 113 [2021-11-23 13:51:49,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:51:49,420 INFO L225 Difference]: With dead ends: 841 [2021-11-23 13:51:49,421 INFO L226 Difference]: Without dead ends: 424 [2021-11-23 13:51:49,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:51:49,427 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 3 mSDsluCounter, 1584 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:51:49,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2115 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:51:49,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-11-23 13:51:49,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 424. [2021-11-23 13:51:49,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 423 states have (on average 1.2742316784869976) internal successors, (539), 423 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:51:49,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 539 transitions. [2021-11-23 13:51:49,462 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 539 transitions. Word has length 113 [2021-11-23 13:51:49,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:51:49,465 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 539 transitions. [2021-11-23 13:51:49,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:51:49,465 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 539 transitions. [2021-11-23 13:51:49,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-23 13:51:49,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:51:49,470 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:51:49,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:51:49,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:51:49,688 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:51:49,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:51:49,689 INFO L85 PathProgramCache]: Analyzing trace with hash -548913583, now seen corresponding path program 2 times [2021-11-23 13:51:49,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:51:49,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177434447] [2021-11-23 13:51:49,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:51:49,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:51:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:51:49,858 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:51:49,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:51:49,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177434447] [2021-11-23 13:51:49,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177434447] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:51:49,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544983618] [2021-11-23 13:51:49,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 13:51:49,860 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:51:49,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:51:49,861 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:51:49,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 13:51:51,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-23 13:51:51,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:51:51,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:51:51,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:51:52,389 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 13:51:52,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:51:52,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544983618] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:51:52,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 13:51:52,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-23 13:51:52,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488618329] [2021-11-23 13:51:52,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:51:52,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:51:52,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:51:52,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:51:52,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:51:52,392 INFO L87 Difference]: Start difference. First operand 424 states and 539 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:51:52,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:51:52,465 INFO L93 Difference]: Finished difference Result 736 states and 927 transitions. [2021-11-23 13:51:52,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:51:52,466 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 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 117 [2021-11-23 13:51:52,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:51:52,473 INFO L225 Difference]: With dead ends: 736 [2021-11-23 13:51:52,473 INFO L226 Difference]: Without dead ends: 566 [2021-11-23 13:51:52,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:51:52,481 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 418 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:51:52,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 1448 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:51:52,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2021-11-23 13:51:52,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 564. [2021-11-23 13:51:52,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 563 states have (on average 1.2877442273534636) internal successors, (725), 563 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:51:52,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 725 transitions. [2021-11-23 13:51:52,512 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 725 transitions. Word has length 117 [2021-11-23 13:51:52,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:51:52,513 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 725 transitions. [2021-11-23 13:51:52,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:51:52,514 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 725 transitions. [2021-11-23 13:51:52,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-23 13:51:52,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:51:52,522 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:51:52,563 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-23 13:51:52,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:51:52,736 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:51:52,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:51:52,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1636030744, now seen corresponding path program 1 times [2021-11-23 13:51:52,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:51:52,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310705144] [2021-11-23 13:51:52,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:51:52,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:51:52,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:51:52,876 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:51:52,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:51:52,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310705144] [2021-11-23 13:51:52,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310705144] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:51:52,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640213230] [2021-11-23 13:51:52,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:51:52,878 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:51:52,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:51:52,885 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:51:52,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 13:51:53,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:51:53,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:51:53,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:51:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:51:53,743 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:51:54,272 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:51:54,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640213230] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:51:54,273 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:51:54,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-23 13:51:54,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581599434] [2021-11-23 13:51:54,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:51:54,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:51:54,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:51:54,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:51:54,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:51:54,276 INFO L87 Difference]: Start difference. First operand 564 states and 725 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:51:54,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:51:54,362 INFO L93 Difference]: Finished difference Result 1143 states and 1469 transitions. [2021-11-23 13:51:54,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:51:54,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 0 states have call successors, (0), 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 153 [2021-11-23 13:51:54,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:51:54,367 INFO L225 Difference]: With dead ends: 1143 [2021-11-23 13:51:54,367 INFO L226 Difference]: Without dead ends: 591 [2021-11-23 13:51:54,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:51:54,370 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 24 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:51:54,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 1588 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:51:54,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2021-11-23 13:51:54,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 591. [2021-11-23 13:51:54,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 590 states have (on average 1.2796610169491525) internal successors, (755), 590 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:51:54,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 755 transitions. [2021-11-23 13:51:54,393 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 755 transitions. Word has length 153 [2021-11-23 13:51:54,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:51:54,393 INFO L470 AbstractCegarLoop]: Abstraction has 591 states and 755 transitions. [2021-11-23 13:51:54,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 7 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:51:54,394 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 755 transitions. [2021-11-23 13:51:54,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-23 13:51:54,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:51:54,398 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:51:54,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:51:54,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:51:54,612 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:51:54,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:51:54,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1963575654, now seen corresponding path program 2 times [2021-11-23 13:51:54,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:51:54,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892047925] [2021-11-23 13:51:54,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:51:54,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:51:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:51:55,133 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-11-23 13:51:55,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:51:55,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892047925] [2021-11-23 13:51:55,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892047925] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:51:55,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:51:55,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:51:55,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735104386] [2021-11-23 13:51:55,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:51:55,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:51:55,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:51:55,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:51:55,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:51:55,136 INFO L87 Difference]: Start difference. First operand 591 states and 755 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 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) [2021-11-23 13:51:57,162 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:51:57,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:51:57,618 INFO L93 Difference]: Finished difference Result 1277 states and 1573 transitions. [2021-11-23 13:51:57,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:51:57,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 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) Word has length 180 [2021-11-23 13:51:57,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:51:57,631 INFO L225 Difference]: With dead ends: 1277 [2021-11-23 13:51:57,631 INFO L226 Difference]: Without dead ends: 1003 [2021-11-23 13:51:57,633 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:51:57,635 INFO L933 BasicCegarLoop]: 626 mSDtfsCounter, 566 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 1562 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:51:57,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [566 Valid, 1562 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-11-23 13:51:57,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2021-11-23 13:51:57,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 771. [2021-11-23 13:51:57,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 770 states have (on average 1.290909090909091) internal successors, (994), 770 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:51:57,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 994 transitions. [2021-11-23 13:51:57,671 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 994 transitions. Word has length 180 [2021-11-23 13:51:57,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:51:57,672 INFO L470 AbstractCegarLoop]: Abstraction has 771 states and 994 transitions. [2021-11-23 13:51:57,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 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) [2021-11-23 13:51:57,672 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 994 transitions. [2021-11-23 13:51:57,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-23 13:51:57,677 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:51:57,677 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:51:57,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:51:57,678 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:51:57,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:51:57,678 INFO L85 PathProgramCache]: Analyzing trace with hash 2099560614, now seen corresponding path program 1 times [2021-11-23 13:51:57,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:51:57,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172172277] [2021-11-23 13:51:57,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:51:57,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:51:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:51:58,015 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2021-11-23 13:51:58,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:51:58,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172172277] [2021-11-23 13:51:58,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172172277] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:51:58,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:51:58,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:51:58,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093336774] [2021-11-23 13:51:58,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:51:58,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:51:58,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:51:58,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:51:58,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:51:58,018 INFO L87 Difference]: Start difference. First operand 771 states and 994 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 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) [2021-11-23 13:52:00,040 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:52:00,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:52:00,326 INFO L93 Difference]: Finished difference Result 1318 states and 1621 transitions. [2021-11-23 13:52:00,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:52:00,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 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) Word has length 180 [2021-11-23 13:52:00,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:52:00,333 INFO L225 Difference]: With dead ends: 1318 [2021-11-23 13:52:00,333 INFO L226 Difference]: Without dead ends: 834 [2021-11-23 13:52:00,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:52:00,335 INFO L933 BasicCegarLoop]: 678 mSDtfsCounter, 478 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:52:00,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 1622 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 13:52:00,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2021-11-23 13:52:00,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 600. [2021-11-23 13:52:00,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 599 states have (on average 1.2671118530884808) internal successors, (759), 599 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:52:00,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 759 transitions. [2021-11-23 13:52:00,361 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 759 transitions. Word has length 180 [2021-11-23 13:52:00,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:52:00,361 INFO L470 AbstractCegarLoop]: Abstraction has 600 states and 759 transitions. [2021-11-23 13:52:00,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 3 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) [2021-11-23 13:52:00,362 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 759 transitions. [2021-11-23 13:52:00,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2021-11-23 13:52:00,366 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:52:00,366 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:52:00,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 13:52:00,367 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:52:00,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:52:00,368 INFO L85 PathProgramCache]: Analyzing trace with hash -362879002, now seen corresponding path program 1 times [2021-11-23 13:52:00,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:52:00,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027593712] [2021-11-23 13:52:00,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:52:00,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:52:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:52:00,682 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-23 13:52:00,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:52:00,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027593712] [2021-11-23 13:52:00,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027593712] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:52:00,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326105081] [2021-11-23 13:52:00,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:52:00,683 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:52:00,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:52:00,688 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:52:00,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 13:52:01,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:52:01,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 1198 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 13:52:01,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:52:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-23 13:52:01,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:52:02,282 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 166 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-23 13:52:02,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326105081] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:52:02,282 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:52:02,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2021-11-23 13:52:02,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432730395] [2021-11-23 13:52:02,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:52:02,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:52:02,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:52:02,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:52:02,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:52:02,285 INFO L87 Difference]: Start difference. First operand 600 states and 759 transitions. Second operand has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:52:02,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:52:02,418 INFO L93 Difference]: Finished difference Result 1188 states and 1507 transitions. [2021-11-23 13:52:02,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:52:02,419 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 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 180 [2021-11-23 13:52:02,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:52:02,425 INFO L225 Difference]: With dead ends: 1188 [2021-11-23 13:52:02,426 INFO L226 Difference]: Without dead ends: 627 [2021-11-23 13:52:02,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 356 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:52:02,428 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 28 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:52:02,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 904 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:52:02,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2021-11-23 13:52:02,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 627. [2021-11-23 13:52:02,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 627 states, 626 states have (on average 1.2603833865814698) internal successors, (789), 626 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:52:02,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 789 transitions. [2021-11-23 13:52:02,453 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 789 transitions. Word has length 180 [2021-11-23 13:52:02,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:52:02,454 INFO L470 AbstractCegarLoop]: Abstraction has 627 states and 789 transitions. [2021-11-23 13:52:02,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.2) internal successors, (182), 10 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:52:02,455 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 789 transitions. [2021-11-23 13:52:02,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-23 13:52:02,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:52:02,459 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:52:02,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:52:02,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:52:02,687 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:52:02,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:52:02,687 INFO L85 PathProgramCache]: Analyzing trace with hash 575878872, now seen corresponding path program 2 times [2021-11-23 13:52:02,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:52:02,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696621835] [2021-11-23 13:52:02,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:52:02,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:52:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:52:03,131 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2021-11-23 13:52:03,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:52:03,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696621835] [2021-11-23 13:52:03,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696621835] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:52:03,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:52:03,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:52:03,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606251654] [2021-11-23 13:52:03,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:52:03,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:52:03,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:52:03,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:52:03,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:52:03,136 INFO L87 Difference]: Start difference. First operand 627 states and 789 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 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) [2021-11-23 13:52:03,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:52:03,293 INFO L93 Difference]: Finished difference Result 1102 states and 1394 transitions. [2021-11-23 13:52:03,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:52:03,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 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) Word has length 207 [2021-11-23 13:52:03,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:52:03,301 INFO L225 Difference]: With dead ends: 1102 [2021-11-23 13:52:03,302 INFO L226 Difference]: Without dead ends: 559 [2021-11-23 13:52:03,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:52:03,306 INFO L933 BasicCegarLoop]: 448 mSDtfsCounter, 8 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:52:03,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 868 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:52:03,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2021-11-23 13:52:03,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 559. [2021-11-23 13:52:03,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 558 states have (on average 1.2562724014336917) internal successors, (701), 558 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:52:03,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 701 transitions. [2021-11-23 13:52:03,329 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 701 transitions. Word has length 207 [2021-11-23 13:52:03,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:52:03,330 INFO L470 AbstractCegarLoop]: Abstraction has 559 states and 701 transitions. [2021-11-23 13:52:03,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 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) [2021-11-23 13:52:03,330 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 701 transitions. [2021-11-23 13:52:03,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-23 13:52:03,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:52:03,335 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:52:03,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 13:52:03,335 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:52:03,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:52:03,336 INFO L85 PathProgramCache]: Analyzing trace with hash 864698262, now seen corresponding path program 1 times [2021-11-23 13:52:03,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:52:03,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812979796] [2021-11-23 13:52:03,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:52:03,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:52:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:52:03,683 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2021-11-23 13:52:03,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:52:03,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812979796] [2021-11-23 13:52:03,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812979796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:52:03,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:52:03,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:52:03,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28424311] [2021-11-23 13:52:03,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:52:03,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:52:03,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:52:03,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:52:03,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:52:03,687 INFO L87 Difference]: Start difference. First operand 559 states and 701 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 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) [2021-11-23 13:52:04,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:52:04,069 INFO L93 Difference]: Finished difference Result 1121 states and 1423 transitions. [2021-11-23 13:52:04,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:52:04,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 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) Word has length 207 [2021-11-23 13:52:04,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:52:04,077 INFO L225 Difference]: With dead ends: 1121 [2021-11-23 13:52:04,078 INFO L226 Difference]: Without dead ends: 646 [2021-11-23 13:52:04,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:52:04,080 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 131 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 1275 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:52:04,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 1275 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-23 13:52:04,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2021-11-23 13:52:04,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 646. [2021-11-23 13:52:04,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 645 states have (on average 1.2635658914728682) internal successors, (815), 645 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:52:04,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 815 transitions. [2021-11-23 13:52:04,107 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 815 transitions. Word has length 207 [2021-11-23 13:52:04,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:52:04,108 INFO L470 AbstractCegarLoop]: Abstraction has 646 states and 815 transitions. [2021-11-23 13:52:04,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 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) [2021-11-23 13:52:04,109 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 815 transitions. [2021-11-23 13:52:04,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-23 13:52:04,111 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:52:04,111 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:52:04,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 13:52:04,112 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:52:04,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:52:04,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1811736148, now seen corresponding path program 1 times [2021-11-23 13:52:04,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:52:04,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408800428] [2021-11-23 13:52:04,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:52:04,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:52:22,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:52:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2021-11-23 13:52:23,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:52:23,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408800428] [2021-11-23 13:52:23,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408800428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:52:23,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:52:23,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:52:23,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089159133] [2021-11-23 13:52:23,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:52:23,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:52:23,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:52:23,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:52:23,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:52:23,223 INFO L87 Difference]: Start difference. First operand 646 states and 815 transitions. Second operand has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 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) [2021-11-23 13:52:24,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:52:24,290 INFO L93 Difference]: Finished difference Result 1533 states and 1922 transitions. [2021-11-23 13:52:24,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:52:24,291 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 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) Word has length 207 [2021-11-23 13:52:24,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:52:24,298 INFO L225 Difference]: With dead ends: 1533 [2021-11-23 13:52:24,298 INFO L226 Difference]: Without dead ends: 944 [2021-11-23 13:52:24,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:52:24,304 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 696 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:52:24,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [696 Valid, 1124 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 13:52:24,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2021-11-23 13:52:24,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 802. [2021-11-23 13:52:24,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 801 states have (on average 1.2047440699126093) internal successors, (965), 801 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:52:24,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 965 transitions. [2021-11-23 13:52:24,347 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 965 transitions. Word has length 207 [2021-11-23 13:52:24,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:52:24,347 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 965 transitions. [2021-11-23 13:52:24,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.8) internal successors, (149), 4 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) [2021-11-23 13:52:24,348 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 965 transitions. [2021-11-23 13:52:24,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-11-23 13:52:24,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:52:24,353 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:52:24,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 13:52:24,354 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:52:24,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:52:24,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1023574348, now seen corresponding path program 1 times [2021-11-23 13:52:24,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:52:24,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418117745] [2021-11-23 13:52:24,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:52:24,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:52:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:52:34,831 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2021-11-23 13:52:34,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:52:34,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418117745] [2021-11-23 13:52:34,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418117745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:52:34,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:52:34,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 13:52:34,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288124257] [2021-11-23 13:52:34,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:52:34,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 13:52:34,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:52:34,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 13:52:34,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:52:34,838 INFO L87 Difference]: Start difference. First operand 802 states and 965 transitions. Second operand has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 10 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) [2021-11-23 13:52:37,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:52:39,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:52:39,866 INFO L93 Difference]: Finished difference Result 1570 states and 1857 transitions. [2021-11-23 13:52:39,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 13:52:39,868 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 10 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) Word has length 207 [2021-11-23 13:52:39,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:52:39,876 INFO L225 Difference]: With dead ends: 1570 [2021-11-23 13:52:39,876 INFO L226 Difference]: Without dead ends: 1284 [2021-11-23 13:52:39,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-11-23 13:52:39,879 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 705 mSDsluCounter, 2547 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 49 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 2896 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:52:39,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [705 Valid, 2896 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 819 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2021-11-23 13:52:39,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2021-11-23 13:52:39,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 802. [2021-11-23 13:52:39,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 801 states have (on average 1.2009987515605494) internal successors, (962), 801 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:52:39,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 962 transitions. [2021-11-23 13:52:39,924 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 962 transitions. Word has length 207 [2021-11-23 13:52:39,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:52:39,925 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 962 transitions. [2021-11-23 13:52:39,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.545454545454545) internal successors, (149), 10 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) [2021-11-23 13:52:39,925 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 962 transitions. [2021-11-23 13:52:39,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-23 13:52:39,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:52:39,931 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:52:39,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 13:52:39,931 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:52:39,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:52:39,932 INFO L85 PathProgramCache]: Analyzing trace with hash -36661328, now seen corresponding path program 1 times [2021-11-23 13:52:39,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:52:39,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087381600] [2021-11-23 13:52:39,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:52:39,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:52:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:52:43,893 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2021-11-23 13:52:43,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:52:43,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087381600] [2021-11-23 13:52:43,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087381600] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:52:43,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:52:43,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 13:52:43,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809974331] [2021-11-23 13:52:43,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:52:43,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:52:43,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:52:43,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:52:43,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:52:43,896 INFO L87 Difference]: Start difference. First operand 802 states and 962 transitions. Second operand has 8 states, 8 states have (on average 20.0) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:52:45,984 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:52:46,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:52:46,600 INFO L93 Difference]: Finished difference Result 1370 states and 1586 transitions. [2021-11-23 13:52:46,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:52:46,601 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.0) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 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 218 [2021-11-23 13:52:46,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:52:46,608 INFO L225 Difference]: With dead ends: 1370 [2021-11-23 13:52:46,608 INFO L226 Difference]: Without dead ends: 957 [2021-11-23 13:52:46,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:52:46,611 INFO L933 BasicCegarLoop]: 385 mSDtfsCounter, 985 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:52:46,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [985 Valid, 1906 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 57 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-11-23 13:52:46,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2021-11-23 13:52:46,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 684. [2021-11-23 13:52:46,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 1.1874084919472914) internal successors, (811), 683 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:52:46,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 811 transitions. [2021-11-23 13:52:46,653 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 811 transitions. Word has length 218 [2021-11-23 13:52:46,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:52:46,654 INFO L470 AbstractCegarLoop]: Abstraction has 684 states and 811 transitions. [2021-11-23 13:52:46,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.0) internal successors, (160), 7 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:52:46,654 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 811 transitions. [2021-11-23 13:52:46,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-23 13:52:46,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:52:46,659 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:52:46,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 13:52:46,660 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:52:46,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:52:46,661 INFO L85 PathProgramCache]: Analyzing trace with hash -464368771, now seen corresponding path program 1 times [2021-11-23 13:52:46,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:52:46,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976694574] [2021-11-23 13:52:46,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:52:46,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:52:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:52:52,981 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2021-11-23 13:52:52,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:52:52,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976694574] [2021-11-23 13:52:52,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976694574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:52:52,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:52:52,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:52:52,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101999209] [2021-11-23 13:52:52,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:52:52,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:52:52,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:52:52,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:52:52,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:52:52,984 INFO L87 Difference]: Start difference. First operand 684 states and 811 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:52:53,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:52:53,768 INFO L93 Difference]: Finished difference Result 1356 states and 1591 transitions. [2021-11-23 13:52:53,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:52:53,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 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 219 [2021-11-23 13:52:53,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:52:53,774 INFO L225 Difference]: With dead ends: 1356 [2021-11-23 13:52:53,774 INFO L226 Difference]: Without dead ends: 817 [2021-11-23 13:52:53,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:52:53,777 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 331 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1132 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:52:53,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 1132 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 13:52:53,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2021-11-23 13:52:53,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 681. [2021-11-23 13:52:53,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 681 states, 680 states have (on average 1.1161764705882353) internal successors, (759), 680 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:52:53,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 759 transitions. [2021-11-23 13:52:53,815 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 759 transitions. Word has length 219 [2021-11-23 13:52:53,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:52:53,815 INFO L470 AbstractCegarLoop]: Abstraction has 681 states and 759 transitions. [2021-11-23 13:52:53,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:52:53,816 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 759 transitions. [2021-11-23 13:52:53,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-23 13:52:53,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:52:53,821 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:52:53,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 13:52:53,821 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:52:53,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:52:53,822 INFO L85 PathProgramCache]: Analyzing trace with hash 574215803, now seen corresponding path program 1 times [2021-11-23 13:52:53,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:52:53,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224216869] [2021-11-23 13:52:53,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:52:53,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:53:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2021-11-23 13:53:07,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:53:07,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224216869] [2021-11-23 13:53:07,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224216869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:07,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:07,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:53:07,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976143030] [2021-11-23 13:53:07,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:07,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:53:07,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:53:07,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:53:07,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:53:07,678 INFO L87 Difference]: Start difference. First operand 681 states and 759 transitions. Second operand has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:08,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:08,794 INFO L93 Difference]: Finished difference Result 1379 states and 1511 transitions. [2021-11-23 13:53:08,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:53:08,795 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 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 219 [2021-11-23 13:53:08,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:08,801 INFO L225 Difference]: With dead ends: 1379 [2021-11-23 13:53:08,802 INFO L226 Difference]: Without dead ends: 918 [2021-11-23 13:53:08,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:53:08,804 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 758 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 894 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:08,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 894 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-23 13:53:08,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2021-11-23 13:53:08,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 706. [2021-11-23 13:53:08,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 705 states have (on average 1.1106382978723404) internal successors, (783), 705 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:08,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 783 transitions. [2021-11-23 13:53:08,857 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 783 transitions. Word has length 219 [2021-11-23 13:53:08,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:08,858 INFO L470 AbstractCegarLoop]: Abstraction has 706 states and 783 transitions. [2021-11-23 13:53:08,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.833333333333332) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:08,858 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 783 transitions. [2021-11-23 13:53:08,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2021-11-23 13:53:08,862 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:08,863 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:08,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 13:53:08,863 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:08,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:08,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1292492871, now seen corresponding path program 1 times [2021-11-23 13:53:08,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:53:08,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925192514] [2021-11-23 13:53:08,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:08,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:53:21,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:21,921 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2021-11-23 13:53:21,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:53:21,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925192514] [2021-11-23 13:53:21,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925192514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:21,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:21,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 13:53:21,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351556682] [2021-11-23 13:53:21,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:21,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:53:21,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:53:21,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:53:21,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:53:21,924 INFO L87 Difference]: Start difference. First operand 706 states and 783 transitions. Second operand has 10 states, 10 states have (on average 16.1) internal successors, (161), 9 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:24,004 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:53:25,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:25,443 INFO L93 Difference]: Finished difference Result 1153 states and 1263 transitions. [2021-11-23 13:53:25,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:53:25,443 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 16.1) internal successors, (161), 9 states have internal predecessors, (161), 0 states have call successors, (0), 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 219 [2021-11-23 13:53:25,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:25,450 INFO L225 Difference]: With dead ends: 1153 [2021-11-23 13:53:25,450 INFO L226 Difference]: Without dead ends: 1053 [2021-11-23 13:53:25,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-11-23 13:53:25,452 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 869 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:25,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 2691 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 420 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2021-11-23 13:53:25,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2021-11-23 13:53:25,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 770. [2021-11-23 13:53:25,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 1.1131339401820546) internal successors, (856), 769 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:25,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 856 transitions. [2021-11-23 13:53:25,512 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 856 transitions. Word has length 219 [2021-11-23 13:53:25,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:25,512 INFO L470 AbstractCegarLoop]: Abstraction has 770 states and 856 transitions. [2021-11-23 13:53:25,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 16.1) internal successors, (161), 9 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:25,513 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 856 transitions. [2021-11-23 13:53:25,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-11-23 13:53:25,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:25,518 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:25,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 13:53:25,518 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:25,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:25,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1454005811, now seen corresponding path program 1 times [2021-11-23 13:53:25,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:53:25,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009945734] [2021-11-23 13:53:25,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:25,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:53:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:53:28,088 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2021-11-23 13:53:28,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:53:28,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009945734] [2021-11-23 13:53:28,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009945734] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:53:28,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:53:28,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:53:28,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251521252] [2021-11-23 13:53:28,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:53:28,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:53:28,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:53:28,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:53:28,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:53:28,091 INFO L87 Difference]: Start difference. First operand 770 states and 856 transitions. Second operand has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:30,132 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:53:30,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:53:30,413 INFO L93 Difference]: Finished difference Result 1008 states and 1098 transitions. [2021-11-23 13:53:30,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:53:30,414 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 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 230 [2021-11-23 13:53:30,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:53:30,418 INFO L225 Difference]: With dead ends: 1008 [2021-11-23 13:53:30,418 INFO L226 Difference]: Without dead ends: 572 [2021-11-23 13:53:30,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:53:30,420 INFO L933 BasicCegarLoop]: 331 mSDtfsCounter, 1456 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:53:30,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1456 Valid, 863 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-23 13:53:30,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-11-23 13:53:30,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 456. [2021-11-23 13:53:30,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 455 states have (on average 1.0967032967032968) internal successors, (499), 455 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:30,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 499 transitions. [2021-11-23 13:53:30,459 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 499 transitions. Word has length 230 [2021-11-23 13:53:30,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:53:30,460 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 499 transitions. [2021-11-23 13:53:30,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.571428571428573) internal successors, (172), 6 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:53:30,460 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 499 transitions. [2021-11-23 13:53:30,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-23 13:53:30,462 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:53:30,463 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:53:30,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 13:53:30,463 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:53:30,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:53:30,464 INFO L85 PathProgramCache]: Analyzing trace with hash 486730470, now seen corresponding path program 1 times [2021-11-23 13:53:30,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:53:30,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10499256] [2021-11-23 13:53:30,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:53:30,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:54:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:54:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 637 trivial. 0 not checked. [2021-11-23 13:54:36,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:54:36,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10499256] [2021-11-23 13:54:36,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10499256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:54:36,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:54:36,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 13:54:36,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969349433] [2021-11-23 13:54:36,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:54:36,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:54:36,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:54:36,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:54:36,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:54:36,754 INFO L87 Difference]: Start difference. First operand 456 states and 499 transitions. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:54:38,796 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:54:40,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:54:41,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:54:41,125 INFO L93 Difference]: Finished difference Result 678 states and 723 transitions. [2021-11-23 13:54:41,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:54:41,132 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 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 231 [2021-11-23 13:54:41,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:54:41,136 INFO L225 Difference]: With dead ends: 678 [2021-11-23 13:54:41,137 INFO L226 Difference]: Without dead ends: 530 [2021-11-23 13:54:41,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:54:41,138 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 511 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:54:41,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [511 Valid, 1026 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2021-11-23 13:54:41,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2021-11-23 13:54:41,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 414. [2021-11-23 13:54:41,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 1.0920096852300243) internal successors, (451), 413 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:54:41,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 451 transitions. [2021-11-23 13:54:41,174 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 451 transitions. Word has length 231 [2021-11-23 13:54:41,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:54:41,175 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 451 transitions. [2021-11-23 13:54:41,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:54:41,175 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 451 transitions. [2021-11-23 13:54:41,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-11-23 13:54:41,177 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:54:41,178 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:54:41,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 13:54:41,178 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:54:41,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:54:41,179 INFO L85 PathProgramCache]: Analyzing trace with hash 728884582, now seen corresponding path program 1 times [2021-11-23 13:54:41,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:54:41,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898553833] [2021-11-23 13:54:41,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:54:41,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:56:53,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:01:42,051 WARN L227 SmtUtils]: Spent 1.37m on a formula simplification that was a NOOP. DAG size: 228 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:02:28,105 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 0 proven. 586 refuted. 1 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-23 14:02:28,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:02:28,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898553833] [2021-11-23 14:02:28,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898553833] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 14:02:28,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437002859] [2021-11-23 14:02:28,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:02:28,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:02:28,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:02:28,109 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:02:28,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70ff3b66-65c7-4b22-a48e-1f8407b00551/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 14:02:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:02:39,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 188 conjunts are in the unsatisfiable core [2021-11-23 14:02:39,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:02:41,815 INFO L354 Elim1Store]: treesize reduction 663, result has 17.6 percent of original size [2021-11-23 14:02:41,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 42 case distinctions, treesize of input 90 treesize of output 201 [2021-11-23 14:02:43,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2021-11-23 14:02:43,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-11-23 14:02:44,584 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-11-23 14:02:45,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-11-23 14:02:48,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2021-11-23 14:02:49,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-11-23 14:02:50,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-11-23 14:02:51,527 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-11-23 14:02:55,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2021-11-23 14:02:56,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-11-23 14:02:57,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-11-23 14:02:58,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-11-23 14:03:01,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2021-11-23 14:03:01,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-11-23 14:03:02,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-11-23 14:03:04,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-11-23 14:03:07,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2021-11-23 14:03:07,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-11-23 14:03:09,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-11-23 14:03:11,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-11-23 14:03:15,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2021-11-23 14:03:16,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-11-23 14:03:16,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-11-23 14:03:17,890 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-11-23 14:03:20,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 33 [2021-11-23 14:03:21,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-11-23 14:03:22,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 17 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 23 [2021-11-23 14:03:23,177 INFO L354 Elim1Store]: treesize reduction 113, result has 15.0 percent of original size [2021-11-23 14:03:23,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 8 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 107 treesize of output 67