./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-cav19/array_init_nondet_vars.c --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_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/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_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-cav19/array_init_nondet_vars.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/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_f3408893-4af5-404a-b425-054cee6b3cee/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 b36a429fc2ac304c1da00c90b438bd7c9bbfb7e9d7c6704fc9e7805ab1ca424f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:32:50,273 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:32:50,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:32:50,322 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:32:50,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:32:50,324 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:32:50,326 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:32:50,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:32:50,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:32:50,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:32:50,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:32:50,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:32:50,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:32:50,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:32:50,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:32:50,340 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:32:50,341 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:32:50,342 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:32:50,344 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:32:50,347 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:32:50,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:32:50,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:32:50,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:32:50,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:32:50,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:32:50,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:32:50,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:32:50,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:32:50,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:32:50,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:32:50,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:32:50,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:32:50,382 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:32:50,383 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:32:50,385 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:32:50,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:32:50,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:32:50,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:32:50,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:32:50,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:32:50,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:32:50,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:32:50,427 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:32:50,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:32:50,428 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:32:50,428 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:32:50,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:32:50,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:32:50,429 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:32:50,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:32:50,430 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:32:50,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:32:50,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:32:50,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:32:50,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:32:50,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:32:50,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:32:50,431 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:32:50,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:32:50,432 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:32:50,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:32:50,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:32:50,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:32:50,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:32:50,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:32:50,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:32:50,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:32:50,434 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:32:50,434 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:32:50,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:32:50,434 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:32:50,434 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:32:50,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:32:50,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:32:50,435 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_f3408893-4af5-404a-b425-054cee6b3cee/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b36a429fc2ac304c1da00c90b438bd7c9bbfb7e9d7c6704fc9e7805ab1ca424f [2021-11-23 12:32:50,714 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:32:50,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:32:50,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:32:50,745 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:32:50,746 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:32:50,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/array-cav19/array_init_nondet_vars.c [2021-11-23 12:32:50,813 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/data/52df9d292/db3369be747145139ab3e9f09686cca7/FLAG585933e1a [2021-11-23 12:32:51,249 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:32:51,253 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/sv-benchmarks/c/array-cav19/array_init_nondet_vars.c [2021-11-23 12:32:51,269 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/data/52df9d292/db3369be747145139ab3e9f09686cca7/FLAG585933e1a [2021-11-23 12:32:51,640 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/data/52df9d292/db3369be747145139ab3e9f09686cca7 [2021-11-23 12:32:51,642 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:32:51,643 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:32:51,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:32:51,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:32:51,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:32:51,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:32:51" (1/1) ... [2021-11-23 12:32:51,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eeea966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51, skipping insertion in model container [2021-11-23 12:32:51,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:32:51" (1/1) ... [2021-11-23 12:32:51,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:32:51,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:32:51,842 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_f3408893-4af5-404a-b425-054cee6b3cee/sv-benchmarks/c/array-cav19/array_init_nondet_vars.c[413,426] [2021-11-23 12:32:51,863 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:32:51,873 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:32:51,895 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_f3408893-4af5-404a-b425-054cee6b3cee/sv-benchmarks/c/array-cav19/array_init_nondet_vars.c[413,426] [2021-11-23 12:32:51,914 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:32:51,932 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:32:51,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51 WrapperNode [2021-11-23 12:32:51,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:32:51,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:32:51,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:32:51,935 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:32:51,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51" (1/1) ... [2021-11-23 12:32:51,950 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51" (1/1) ... [2021-11-23 12:32:51,976 INFO L137 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 64 [2021-11-23 12:32:51,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:32:51,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:32:51,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:32:51,978 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:32:51,986 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51" (1/1) ... [2021-11-23 12:32:51,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51" (1/1) ... [2021-11-23 12:32:51,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51" (1/1) ... [2021-11-23 12:32:51,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51" (1/1) ... [2021-11-23 12:32:52,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51" (1/1) ... [2021-11-23 12:32:52,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51" (1/1) ... [2021-11-23 12:32:52,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51" (1/1) ... [2021-11-23 12:32:52,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:32:52,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:32:52,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:32:52,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:32:52,029 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51" (1/1) ... [2021-11-23 12:32:52,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:32:52,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:32:52,063 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:32:52,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:32:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:32:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:32:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 12:32:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 12:32:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:32:52,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:32:52,126 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 12:32:52,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 12:32:52,197 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:32:52,199 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:32:52,310 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:32:52,316 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:32:52,316 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 12:32:52,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:32:52 BoogieIcfgContainer [2021-11-23 12:32:52,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:32:52,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:32:52,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:32:52,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:32:52,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:32:51" (1/3) ... [2021-11-23 12:32:52,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630c81eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:32:52, skipping insertion in model container [2021-11-23 12:32:52,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:32:51" (2/3) ... [2021-11-23 12:32:52,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630c81eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:32:52, skipping insertion in model container [2021-11-23 12:32:52,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:32:52" (3/3) ... [2021-11-23 12:32:52,341 INFO L111 eAbstractionObserver]: Analyzing ICFG array_init_nondet_vars.c [2021-11-23 12:32:52,346 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:32:52,346 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:32:52,413 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:32:52,421 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 12:32:52,422 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 12:32:52,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:52,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 12:32:52,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:52,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:32:52,444 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:32:52,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:52,449 INFO L85 PathProgramCache]: Analyzing trace with hash 345788098, now seen corresponding path program 1 times [2021-11-23 12:32:52,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:32:52,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520645756] [2021-11-23 12:32:52,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:52,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:32:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:52,618 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 12:32:52,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:32:52,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520645756] [2021-11-23 12:32:52,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520645756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:52,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:52,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:32:52,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533101744] [2021-11-23 12:32:52,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:52,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 12:32:52,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:32:52,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 12:32:52,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:32:52,670 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:52,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:52,685 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2021-11-23 12:32:52,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 12:32:52,687 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 12:32:52,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:52,696 INFO L225 Difference]: With dead ends: 39 [2021-11-23 12:32:52,696 INFO L226 Difference]: Without dead ends: 17 [2021-11-23 12:32:52,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:32:52,703 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:52,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:32:52,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-23 12:32:52,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-23 12:32:52,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.125) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:52,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-11-23 12:32:52,736 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 11 [2021-11-23 12:32:52,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:52,737 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-11-23 12:32:52,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:52,737 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-11-23 12:32:52,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 12:32:52,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:52,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:32:52,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:32:52,739 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:32:52,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:52,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1506119239, now seen corresponding path program 1 times [2021-11-23 12:32:52,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:32:52,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881613276] [2021-11-23 12:32:52,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:52,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:32:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:52,902 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 12:32:52,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:32:52,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881613276] [2021-11-23 12:32:52,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881613276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:52,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:52,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 12:32:52,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197712570] [2021-11-23 12:32:52,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:52,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 12:32:52,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:32:52,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 12:32:52,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:32:52,930 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:53,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:53,001 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2021-11-23 12:32:53,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:32:53,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 12:32:53,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:53,003 INFO L225 Difference]: With dead ends: 35 [2021-11-23 12:32:53,003 INFO L226 Difference]: Without dead ends: 27 [2021-11-23 12:32:53,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:32:53,005 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:53,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:32:53,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-23 12:32:53,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 18. [2021-11-23 12:32:53,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 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 12:32:53,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-11-23 12:32:53,016 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 11 [2021-11-23 12:32:53,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:53,016 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-11-23 12:32:53,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:53,018 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-11-23 12:32:53,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-23 12:32:53,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:53,021 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:32:53,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:32:53,022 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:32:53,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:53,030 INFO L85 PathProgramCache]: Analyzing trace with hash 631202802, now seen corresponding path program 1 times [2021-11-23 12:32:53,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:32:53,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232581406] [2021-11-23 12:32:53,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:53,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:32:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:53,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:53,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:32:53,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232581406] [2021-11-23 12:32:53,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232581406] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:32:53,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602322519] [2021-11-23 12:32:53,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:53,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:32:53,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:32:53,411 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:32:53,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 12:32:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:53,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-23 12:32:53,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:32:53,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-23 12:32:54,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-23 12:32:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:54,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:32:54,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2021-11-23 12:32:54,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-23 12:32:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:54,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602322519] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:32:54,404 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:32:54,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2021-11-23 12:32:54,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624538440] [2021-11-23 12:32:54,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:32:54,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-23 12:32:54,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:32:54,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-23 12:32:54,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2021-11-23 12:32:54,410 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:54,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:54,930 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2021-11-23 12:32:54,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-23 12:32:54,932 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-23 12:32:54,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:54,933 INFO L225 Difference]: With dead ends: 44 [2021-11-23 12:32:54,933 INFO L226 Difference]: Without dead ends: 42 [2021-11-23 12:32:54,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=267, Invalid=855, Unknown=0, NotChecked=0, Total=1122 [2021-11-23 12:32:54,936 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 93 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:54,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 101 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:32:54,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-23 12:32:54,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 25. [2021-11-23 12:32:54,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:54,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-11-23 12:32:54,943 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 15 [2021-11-23 12:32:54,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:54,943 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-11-23 12:32:54,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:54,943 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-11-23 12:32:54,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 12:32:54,944 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:54,944 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:32:54,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:32:55,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:32:55,146 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:32:55,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:55,147 INFO L85 PathProgramCache]: Analyzing trace with hash -948870232, now seen corresponding path program 1 times [2021-11-23 12:32:55,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:32:55,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93268769] [2021-11-23 12:32:55,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:55,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:32:55,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:55,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:55,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:32:55,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93268769] [2021-11-23 12:32:55,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93268769] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:32:55,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275652055] [2021-11-23 12:32:55,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:55,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:32:55,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:32:55,231 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:32:55,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 12:32:55,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:55,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-23 12:32:55,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:32:55,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:55,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:32:55,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:55,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275652055] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:32:55,427 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:32:55,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-11-23 12:32:55,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759529044] [2021-11-23 12:32:55,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:32:55,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 12:32:55,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:32:55,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 12:32:55,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-23 12:32:55,430 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 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 12:32:55,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:55,496 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2021-11-23 12:32:55,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 12:32:55,497 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 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 19 [2021-11-23 12:32:55,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:55,500 INFO L225 Difference]: With dead ends: 49 [2021-11-23 12:32:55,501 INFO L226 Difference]: Without dead ends: 37 [2021-11-23 12:32:55,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-23 12:32:55,506 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:55,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 48 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:32:55,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-23 12:32:55,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 22. [2021-11-23 12:32:55,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:55,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2021-11-23 12:32:55,525 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 19 [2021-11-23 12:32:55,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:55,526 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2021-11-23 12:32:55,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 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 12:32:55,526 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2021-11-23 12:32:55,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 12:32:55,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:55,527 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:32:55,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 12:32:55,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-23 12:32:55,741 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:32:55,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:55,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1470197333, now seen corresponding path program 2 times [2021-11-23 12:32:55,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:32:55,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652900990] [2021-11-23 12:32:55,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:55,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:32:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:56,035 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:56,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:32:56,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652900990] [2021-11-23 12:32:56,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652900990] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:32:56,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21041043] [2021-11-23 12:32:56,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:32:56,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:32:56,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:32:56,046 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:32:56,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 12:32:56,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:32:56,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:32:56,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-23 12:32:56,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:32:56,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:32:56,437 INFO L354 Elim1Store]: treesize reduction 34, result has 20.9 percent of original size [2021-11-23 12:32:56,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2021-11-23 12:32:56,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-23 12:32:56,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:56,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:33:06,798 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_26| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_26| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 3 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_26| 4)) (+ |v_ULTIMATE.start_main_~i~0#1_26| |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 4)))))) is different from false [2021-11-23 12:33:06,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-11-23 12:33:06,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 201 [2021-11-23 12:33:07,034 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-23 12:33:07,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21041043] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:33:07,035 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:33:07,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2021-11-23 12:33:07,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307376906] [2021-11-23 12:33:07,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:33:07,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-23 12:33:07,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:33:07,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-23 12:33:07,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=534, Unknown=5, NotChecked=48, Total=702 [2021-11-23 12:33:07,040 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 27 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 27 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:33:09,218 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse1 (< 0 |c_ULTIMATE.start_main_~j~0#1|)) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and .cse0 (= |c_ULTIMATE.start_main_~i~0#1| 1) .cse1 (forall ((|v_ULTIMATE.start_main_~i~0#1_26| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_26| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 3 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_26| 4)) (+ |v_ULTIMATE.start_main_~i~0#1_26| |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 4)))))) (< (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|) .cse2) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) .cse3 (or (and .cse4 .cse1 .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) .cse5)) is different from false [2021-11-23 12:33:09,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:33:09,375 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-11-23 12:33:09,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 12:33:09,376 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 27 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-23 12:33:09,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:33:09,376 INFO L225 Difference]: With dead ends: 29 [2021-11-23 12:33:09,376 INFO L226 Difference]: Without dead ends: 27 [2021-11-23 12:33:09,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=190, Invalid=804, Unknown=6, NotChecked=122, Total=1122 [2021-11-23 12:33:09,378 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 44 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:33:09,378 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 90 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 175 Invalid, 0 Unknown, 27 Unchecked, 0.2s Time] [2021-11-23 12:33:09,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-23 12:33:09,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2021-11-23 12:33:09,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 23 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:33:09,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2021-11-23 12:33:09,382 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 19 [2021-11-23 12:33:09,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:33:09,383 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2021-11-23 12:33:09,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.5925925925925926) internal successors, (43), 27 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:33:09,383 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2021-11-23 12:33:09,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-23 12:33:09,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:33:09,384 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:33:09,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 12:33:09,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:33:09,584 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:33:09,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:33:09,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1459686625, now seen corresponding path program 2 times [2021-11-23 12:33:09,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:33:09,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689513583] [2021-11-23 12:33:09,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:33:09,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:33:09,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:33:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:33:09,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:33:09,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689513583] [2021-11-23 12:33:09,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689513583] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:33:09,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597374840] [2021-11-23 12:33:09,885 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:33:09,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:33:09,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:33:09,886 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:33:09,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 12:33:09,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:33:09,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:33:09,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-23 12:33:09,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:33:10,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2021-11-23 12:33:10,444 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:33:10,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 41 [2021-11-23 12:33:10,480 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:33:10,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:33:10,559 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2021-11-23 12:33:10,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-23 12:33:10,771 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:33:10,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597374840] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:33:10,772 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:33:10,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 27 [2021-11-23 12:33:10,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23552686] [2021-11-23 12:33:10,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:33:10,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-23 12:33:10,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:33:10,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-23 12:33:10,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=583, Unknown=0, NotChecked=0, Total=702 [2021-11-23 12:33:10,774 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 27 states, 27 states have (on average 2.0) internal successors, (54), 27 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:33:11,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:33:11,026 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2021-11-23 12:33:11,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 12:33:11,027 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.0) internal successors, (54), 27 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-23 12:33:11,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:33:11,028 INFO L225 Difference]: With dead ends: 42 [2021-11-23 12:33:11,028 INFO L226 Difference]: Without dead ends: 40 [2021-11-23 12:33:11,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=174, Invalid=756, Unknown=0, NotChecked=0, Total=930 [2021-11-23 12:33:11,029 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 31 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:33:11,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 121 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 31 Unchecked, 0.1s Time] [2021-11-23 12:33:11,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-23 12:33:11,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2021-11-23 12:33:11,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 0 states have call successors, (0), 0 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 12:33:11,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-11-23 12:33:11,035 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 23 [2021-11-23 12:33:11,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:33:11,036 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-11-23 12:33:11,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.0) internal successors, (54), 27 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:33:11,036 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-11-23 12:33:11,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 12:33:11,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:33:11,037 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:33:11,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 12:33:11,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:33:11,238 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:33:11,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:33:11,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1394148073, now seen corresponding path program 3 times [2021-11-23 12:33:11,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:33:11,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658405920] [2021-11-23 12:33:11,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:33:11,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:33:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:33:11,318 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:33:11,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:33:11,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658405920] [2021-11-23 12:33:11,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658405920] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:33:11,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821718556] [2021-11-23 12:33:11,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 12:33:11,319 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:33:11,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:33:11,320 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:33:11,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 12:33:11,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-23 12:33:11,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:33:11,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 12:33:11,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:33:11,508 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:33:11,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:33:11,585 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:33:11,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821718556] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:33:11,586 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:33:11,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2021-11-23 12:33:11,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785624230] [2021-11-23 12:33:11,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:33:11,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 12:33:11,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:33:11,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 12:33:11,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-11-23 12:33:11,588 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 12:33:11,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:33:11,677 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2021-11-23 12:33:11,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 12:33:11,677 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-23 12:33:11,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:33:11,678 INFO L225 Difference]: With dead ends: 61 [2021-11-23 12:33:11,678 INFO L226 Difference]: Without dead ends: 45 [2021-11-23 12:33:11,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-23 12:33:11,679 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 50 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:33:11,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 61 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:33:11,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-23 12:33:11,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28. [2021-11-23 12:33:11,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:33:11,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-11-23 12:33:11,683 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 27 [2021-11-23 12:33:11,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:33:11,684 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-11-23 12:33:11,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 0 states have call successors, (0), 0 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 12:33:11,684 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-11-23 12:33:11,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-23 12:33:11,684 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:33:11,684 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:33:11,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 12:33:11,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 12:33:11,906 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:33:11,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:33:11,906 INFO L85 PathProgramCache]: Analyzing trace with hash -675843686, now seen corresponding path program 4 times [2021-11-23 12:33:11,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:33:11,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56406710] [2021-11-23 12:33:11,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:33:11,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:33:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:33:12,247 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:33:12,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:33:12,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56406710] [2021-11-23 12:33:12,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56406710] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:33:12,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122624176] [2021-11-23 12:33:12,248 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 12:33:12,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:33:12,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:33:12,249 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:33:12,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 12:33:12,305 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 12:33:12,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:33:12,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-23 12:33:12,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:33:12,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:33:12,759 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-11-23 12:33:12,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 54 [2021-11-23 12:33:13,026 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:33:13,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 41 [2021-11-23 12:33:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:33:13,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:33:45,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-11-23 12:33:45,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 201 [2021-11-23 12:33:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:33:45,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122624176] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:33:45,612 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:33:45,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 33 [2021-11-23 12:33:45,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344310325] [2021-11-23 12:33:45,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:33:45,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-23 12:33:45,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:33:45,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-23 12:33:45,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=863, Unknown=16, NotChecked=0, Total=1056 [2021-11-23 12:33:45,615 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 33 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 33 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:33:47,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:33:47,934 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2021-11-23 12:33:47,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 12:33:47,935 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 33 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-23 12:33:47,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:33:47,935 INFO L225 Difference]: With dead ends: 44 [2021-11-23 12:33:47,936 INFO L226 Difference]: Without dead ends: 42 [2021-11-23 12:33:47,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 33 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 34.9s TimeCoverageRelationStatistics Valid=251, Invalid=1138, Unknown=17, NotChecked=0, Total=1406 [2021-11-23 12:33:47,937 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 43 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:33:47,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 112 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 118 Invalid, 0 Unknown, 65 Unchecked, 0.1s Time] [2021-11-23 12:33:47,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-23 12:33:47,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2021-11-23 12:33:47,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0833333333333333) internal successors, (39), 36 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 12:33:47,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-11-23 12:33:47,944 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 27 [2021-11-23 12:33:47,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:33:47,944 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-11-23 12:33:47,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.9696969696969697) internal successors, (65), 33 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:33:47,945 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-11-23 12:33:47,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 12:33:47,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:33:47,946 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:33:47,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 12:33:48,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:33:48,161 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:33:48,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:33:48,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1845124432, now seen corresponding path program 5 times [2021-11-23 12:33:48,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:33:48,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973524084] [2021-11-23 12:33:48,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:33:48,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:33:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:33:48,619 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:33:48,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:33:48,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973524084] [2021-11-23 12:33:48,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973524084] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:33:48,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714016729] [2021-11-23 12:33:48,619 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-23 12:33:48,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:33:48,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:33:48,621 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:33:48,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 12:33:48,682 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-11-23 12:33:48,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:33:48,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-23 12:33:48,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:33:49,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-23 12:33:49,216 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-23 12:33:49,248 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:33:49,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:33:49,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2021-11-23 12:33:49,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-23 12:33:49,670 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:33:49,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714016729] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:33:49,671 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:33:49,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2021-11-23 12:33:49,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673425861] [2021-11-23 12:33:49,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:33:49,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-23 12:33:49,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:33:49,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-23 12:33:49,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1181, Unknown=0, NotChecked=0, Total=1332 [2021-11-23 12:33:49,673 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 12:33:50,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:33:50,968 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2021-11-23 12:33:50,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-23 12:33:50,969 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 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 31 [2021-11-23 12:33:50,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:33:50,970 INFO L225 Difference]: With dead ends: 70 [2021-11-23 12:33:50,970 INFO L226 Difference]: Without dead ends: 68 [2021-11-23 12:33:50,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=565, Invalid=3095, Unknown=0, NotChecked=0, Total=3660 [2021-11-23 12:33:50,973 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 333 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:33:50,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 239 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:33:50,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-11-23 12:33:50,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 41. [2021-11-23 12:33:50,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.075) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:33:50,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2021-11-23 12:33:50,980 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 31 [2021-11-23 12:33:50,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:33:50,981 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2021-11-23 12:33:50,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.27027027027027) internal successors, (84), 37 states have internal predecessors, (84), 0 states have call successors, (0), 0 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 12:33:50,981 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2021-11-23 12:33:50,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-23 12:33:50,982 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:33:50,982 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:33:51,010 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-23 12:33:51,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:33:51,198 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:33:51,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:33:51,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1731538477, now seen corresponding path program 6 times [2021-11-23 12:33:51,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:33:51,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772277963] [2021-11-23 12:33:51,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:33:51,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:33:51,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:33:51,582 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:33:51,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:33:51,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772277963] [2021-11-23 12:33:51,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772277963] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:33:51,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027139416] [2021-11-23 12:33:51,583 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-23 12:33:51,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:33:51,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:33:51,584 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:33:51,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-23 12:33:51,654 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-11-23 12:33:51,654 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:33:51,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-23 12:33:51,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:33:51,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:33:52,050 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-11-23 12:33:52,050 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 48 [2021-11-23 12:33:52,225 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-11-23 12:33:52,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 63 treesize of output 54 [2021-11-23 12:33:52,497 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:33:52,498 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 41 [2021-11-23 12:33:52,530 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:33:52,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:33:56,675 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_73| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_73| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 4 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_73| 4)) (+ |v_ULTIMATE.start_main_~i~0#1_73| |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 8)))))) is different from false [2021-11-23 12:34:00,841 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_74| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int) (|v_ULTIMATE.start_main_~k~0#1_21| Int) (|v_ULTIMATE.start_main_~i~0#1_73| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_73| (+ |v_ULTIMATE.start_main_~i~0#1_74| 1)) (<= 4 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_74| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) (+ |v_ULTIMATE.start_main_~i~0#1_74| |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_73| 4)) (+ |v_ULTIMATE.start_main_~i~0#1_73| |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~k~0#1_21|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 8))))) (< |v_ULTIMATE.start_main_~i~0#1_74| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-23 12:34:00,859 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 48 [2021-11-23 12:34:00,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 438 treesize of output 430 [2021-11-23 12:34:01,411 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2021-11-23 12:34:01,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027139416] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:34:01,411 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:34:01,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 16] total 37 [2021-11-23 12:34:01,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812469094] [2021-11-23 12:34:01,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:34:01,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-11-23 12:34:01,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:34:01,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-11-23 12:34:01,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=991, Unknown=4, NotChecked=134, Total=1332 [2021-11-23 12:34:01,414 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 37 states, 37 states have (on average 2.081081081081081) internal successors, (77), 37 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 12:34:03,613 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse1 (< 0 |c_ULTIMATE.start_main_~j~0#1|)) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_74| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int) (|v_ULTIMATE.start_main_~k~0#1_21| Int) (|v_ULTIMATE.start_main_~i~0#1_73| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_73| (+ |v_ULTIMATE.start_main_~i~0#1_74| 1)) (<= 4 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_74| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) (+ |v_ULTIMATE.start_main_~i~0#1_74| |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_73| 4)) (+ |v_ULTIMATE.start_main_~i~0#1_73| |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~k~0#1_21|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 8))))) (< |v_ULTIMATE.start_main_~i~0#1_74| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) .cse0 (<= |c_ULTIMATE.start_main_~i~0#1| 2) .cse1 (< (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|) .cse2) (<= 2 |c_ULTIMATE.start_main_~i~0#1|) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) .cse3 (or (and .cse4 .cse1 .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) .cse5)) is different from false [2021-11-23 12:34:05,618 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~i~0#1_67| Int)) (let ((.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_67| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|)))) (and (<= 2 |v_ULTIMATE.start_main_~i~0#1_67|) (< (+ |v_ULTIMATE.start_main_~i~0#1_67| |c_ULTIMATE.start_main_~j~0#1|) .cse0) (< .cse0 (+ |v_ULTIMATE.start_main_~i~0#1_67| 10000 |c_ULTIMATE.start_main_~j~0#1|)) (<= |v_ULTIMATE.start_main_~i~0#1_67| 2) (<= (+ |v_ULTIMATE.start_main_~i~0#1_67| 1) |c_ULTIMATE.start_main_~i~0#1|)))) (< 0 |c_ULTIMATE.start_main_~j~0#1|) (forall ((|v_ULTIMATE.start_main_~i~0#1_73| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_73| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 4 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_73| 4)) (+ |v_ULTIMATE.start_main_~i~0#1_73| |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 8)))))) (< |c_ULTIMATE.start_main_~j~0#1| 10000)) is different from false [2021-11-23 12:34:05,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:34:05,685 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2021-11-23 12:34:05,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-23 12:34:05,686 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 2.081081081081081) internal successors, (77), 37 states have internal predecessors, (77), 0 states have call successors, (0), 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 31 [2021-11-23 12:34:05,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:34:05,687 INFO L225 Difference]: With dead ends: 52 [2021-11-23 12:34:05,687 INFO L226 Difference]: Without dead ends: 50 [2021-11-23 12:34:05,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 559 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=241, Invalid=1175, Unknown=6, NotChecked=300, Total=1722 [2021-11-23 12:34:05,690 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 35 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:34:05,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 149 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 127 Invalid, 0 Unknown, 103 Unchecked, 0.1s Time] [2021-11-23 12:34:05,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-23 12:34:05,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2021-11-23 12:34:05,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.075) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:34:05,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2021-11-23 12:34:05,699 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 31 [2021-11-23 12:34:05,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:34:05,700 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2021-11-23 12:34:05,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 2.081081081081081) internal successors, (77), 37 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 12:34:05,700 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2021-11-23 12:34:05,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 12:34:05,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:34:05,702 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:34:05,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-23 12:34:05,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:34:05,922 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:34:05,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:34:05,922 INFO L85 PathProgramCache]: Analyzing trace with hash 215252486, now seen corresponding path program 7 times [2021-11-23 12:34:05,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:34:05,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643957940] [2021-11-23 12:34:05,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:34:05,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:34:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:34:06,026 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:34:06,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:34:06,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643957940] [2021-11-23 12:34:06,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643957940] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:34:06,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556072126] [2021-11-23 12:34:06,027 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 12:34:06,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:34:06,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:34:06,028 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:34:06,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 12:34:06,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:34:06,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 12:34:06,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:34:06,259 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:34:06,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:34:06,348 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:34:06,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1556072126] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:34:06,348 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:34:06,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2021-11-23 12:34:06,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619089459] [2021-11-23 12:34:06,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:34:06,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 12:34:06,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:34:06,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 12:34:06,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-11-23 12:34:06,350 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 12:34:06,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:34:06,474 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2021-11-23 12:34:06,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 12:34:06,475 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 0 states have call successors, (0), 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 35 [2021-11-23 12:34:06,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:34:06,475 INFO L225 Difference]: With dead ends: 73 [2021-11-23 12:34:06,476 INFO L226 Difference]: Without dead ends: 53 [2021-11-23 12:34:06,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2021-11-23 12:34:06,477 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 54 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:34:06,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 119 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:34:06,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-23 12:34:06,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 36. [2021-11-23 12:34:06,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 35 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:34:06,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2021-11-23 12:34:06,484 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 35 [2021-11-23 12:34:06,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:34:06,485 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2021-11-23 12:34:06,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 17 states have internal predecessors, (59), 0 states have call successors, (0), 0 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 12:34:06,485 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2021-11-23 12:34:06,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 12:34:06,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:34:06,487 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:34:06,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 12:34:06,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:34:06,706 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:34:06,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:34:06,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1182729975, now seen corresponding path program 8 times [2021-11-23 12:34:06,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:34:06,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902886526] [2021-11-23 12:34:06,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:34:06,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:34:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:34:07,301 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:34:07,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:34:07,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902886526] [2021-11-23 12:34:07,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902886526] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:34:07,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298804644] [2021-11-23 12:34:07,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:34:07,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:34:07,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:34:07,304 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:34:07,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-23 12:34:07,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:34:07,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:34:07,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-23 12:34:07,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:34:07,771 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:34:07,940 INFO L354 Elim1Store]: treesize reduction 34, result has 20.9 percent of original size [2021-11-23 12:34:07,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2021-11-23 12:34:08,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-23 12:34:08,205 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:34:08,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:34:14,524 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_100| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_100| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 5 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_100| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_100|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 12)))))) is different from false [2021-11-23 12:34:14,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-11-23 12:34:14,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 92 [2021-11-23 12:34:14,924 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2021-11-23 12:34:14,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298804644] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:34:14,925 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:34:14,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2021-11-23 12:34:14,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833527370] [2021-11-23 12:34:14,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:34:14,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-23 12:34:14,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:34:14,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-23 12:34:14,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1612, Unknown=3, NotChecked=82, Total=1892 [2021-11-23 12:34:14,927 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand has 44 states, 44 states have (on average 2.1818181818181817) internal successors, (96), 44 states have internal predecessors, (96), 0 states have call successors, (0), 0 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 12:34:17,385 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse3 (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) (.cse2 (< 0 |c_ULTIMATE.start_main_~j~0#1|)) (.cse5 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse4 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse7 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse6 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and (<= 5 .cse0) (<= 5 (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1| |c_ULTIMATE.start_main_~k~0#1|)) (= 3 |c_ULTIMATE.start_main_~i~0#1|) .cse1 .cse2 (<= 3 |c_ULTIMATE.start_main_~i~0#1|) (< .cse3 .cse0) (< .cse0 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_100| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_100| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 5 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_100| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_100|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 12)))))) (<= 4 .cse3) .cse4 (= |c_ULTIMATE.start_main_~#a~0#1.offset| 0) (or (and .cse5 .cse2 .cse6) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse7)) (<= (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* 4 |c_ULTIMATE.start_main_~i~0#1|)) 12) (or (and .cse5 .cse1 .cse4) (and .cse7 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) .cse6)) is different from false [2021-11-23 12:34:18,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:34:18,111 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2021-11-23 12:34:18,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-23 12:34:18,112 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 2.1818181818181817) internal successors, (96), 44 states have internal predecessors, (96), 0 states have call successors, (0), 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 35 [2021-11-23 12:34:18,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:34:18,112 INFO L225 Difference]: With dead ends: 50 [2021-11-23 12:34:18,113 INFO L226 Difference]: Without dead ends: 48 [2021-11-23 12:34:18,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 944 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=519, Invalid=3391, Unknown=4, NotChecked=246, Total=4160 [2021-11-23 12:34:18,115 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 159 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 57 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:34:18,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 173 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 374 Invalid, 0 Unknown, 57 Unchecked, 0.3s Time] [2021-11-23 12:34:18,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-23 12:34:18,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2021-11-23 12:34:18,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0512820512820513) internal successors, (41), 39 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:34:18,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2021-11-23 12:34:18,122 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 35 [2021-11-23 12:34:18,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:34:18,122 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2021-11-23 12:34:18,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 2.1818181818181817) internal successors, (96), 44 states have internal predecessors, (96), 0 states have call successors, (0), 0 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 12:34:18,123 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2021-11-23 12:34:18,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-23 12:34:18,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:34:18,124 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:34:18,155 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-23 12:34:18,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:34:18,346 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:34:18,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:34:18,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1211853505, now seen corresponding path program 9 times [2021-11-23 12:34:18,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:34:18,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924508845] [2021-11-23 12:34:18,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:34:18,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:34:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:34:18,758 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:34:18,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:34:18,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924508845] [2021-11-23 12:34:18,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924508845] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:34:18,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510541397] [2021-11-23 12:34:18,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 12:34:18,759 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:34:18,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:34:18,762 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:34:18,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-23 12:34:18,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-23 12:34:18,851 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:34:18,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-23 12:34:18,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:34:19,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2021-11-23 12:34:19,760 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:34:19,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2021-11-23 12:34:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:34:19,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:34:20,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2021-11-23 12:34:20,095 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-23 12:34:20,533 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:34:20,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510541397] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:34:20,534 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:34:20,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18, 18] total 43 [2021-11-23 12:34:20,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400830670] [2021-11-23 12:34:20,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:34:20,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-23 12:34:20,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:34:20,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-23 12:34:20,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1529, Unknown=0, NotChecked=0, Total=1806 [2021-11-23 12:34:20,536 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 43 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:34:21,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:34:21,239 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2021-11-23 12:34:21,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-23 12:34:21,239 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 43 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-23 12:34:21,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:34:21,240 INFO L225 Difference]: With dead ends: 76 [2021-11-23 12:34:21,240 INFO L226 Difference]: Without dead ends: 74 [2021-11-23 12:34:21,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1065 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=450, Invalid=2742, Unknown=0, NotChecked=0, Total=3192 [2021-11-23 12:34:21,242 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 88 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:34:21,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 299 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 417 Invalid, 0 Unknown, 50 Unchecked, 0.3s Time] [2021-11-23 12:34:21,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-11-23 12:34:21,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 61. [2021-11-23 12:34:21,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.05) internal successors, (63), 60 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 12:34:21,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 63 transitions. [2021-11-23 12:34:21,254 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 63 transitions. Word has length 39 [2021-11-23 12:34:21,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:34:21,255 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 63 transitions. [2021-11-23 12:34:21,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 43 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:34:21,255 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 63 transitions. [2021-11-23 12:34:21,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-23 12:34:21,256 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:34:21,256 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:34:21,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-23 12:34:21,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-23 12:34:21,462 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:34:21,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:34:21,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1309382664, now seen corresponding path program 10 times [2021-11-23 12:34:21,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:34:21,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358185040] [2021-11-23 12:34:21,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:34:21,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:34:21,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:34:21,843 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:34:21,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:34:21,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358185040] [2021-11-23 12:34:21,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358185040] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:34:21,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981954227] [2021-11-23 12:34:21,844 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 12:34:21,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:34:21,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:34:21,845 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:34:21,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-23 12:34:21,891 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 12:34:21,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:34:21,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-23 12:34:21,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:34:22,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:34:22,431 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-11-23 12:34:22,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 56 [2021-11-23 12:34:22,870 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:34:22,871 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2021-11-23 12:34:22,908 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:34:22,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:34:33,122 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_132| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 6 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_132| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_132|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 16)))) (< |v_ULTIMATE.start_main_~i~0#1_132| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-23 12:34:33,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-11-23 12:34:33,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 92 [2021-11-23 12:34:33,451 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-11-23 12:34:33,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981954227] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:34:33,451 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:34:33,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 41 [2021-11-23 12:34:33,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015803300] [2021-11-23 12:34:33,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:34:33,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-23 12:34:33,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:34:33,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-23 12:34:33,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=209, Invalid=1351, Unknown=4, NotChecked=76, Total=1640 [2021-11-23 12:34:33,454 INFO L87 Difference]: Start difference. First operand 61 states and 63 transitions. Second operand has 41 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 12:34:35,723 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse1 (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and .cse0 (<= |c_ULTIMATE.start_main_~i~0#1| 4) (< .cse1 .cse2) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) .cse3 (or (and .cse4 (< 0 |c_ULTIMATE.start_main_~j~0#1|) .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (forall ((|v_ULTIMATE.start_main_~i~0#1_132| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 6 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_132| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_132|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 16)))) (< |v_ULTIMATE.start_main_~i~0#1_132| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (<= 5 .cse1) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) .cse5 (<= 4 |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2021-11-23 12:34:35,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:34:35,772 INFO L93 Difference]: Finished difference Result 84 states and 87 transitions. [2021-11-23 12:34:35,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-23 12:34:35,773 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 0 states have call successors, (0), 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 43 [2021-11-23 12:34:35,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:34:35,775 INFO L225 Difference]: With dead ends: 84 [2021-11-23 12:34:35,775 INFO L226 Difference]: Without dead ends: 82 [2021-11-23 12:34:35,776 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 60 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 645 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=245, Invalid=1564, Unknown=5, NotChecked=166, Total=1980 [2021-11-23 12:34:35,777 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 62 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:34:35,777 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 222 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 279 Invalid, 0 Unknown, 117 Unchecked, 0.2s Time] [2021-11-23 12:34:35,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-11-23 12:34:35,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 66. [2021-11-23 12:34:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0615384615384615) internal successors, (69), 65 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 12:34:35,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-11-23 12:34:35,806 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 43 [2021-11-23 12:34:35,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:34:35,807 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-11-23 12:34:35,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 2.3658536585365852) internal successors, (97), 41 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 12:34:35,807 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-11-23 12:34:35,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-23 12:34:35,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:34:35,810 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:34:35,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-23 12:34:36,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:34:36,026 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:34:36,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:34:36,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1509487790, now seen corresponding path program 11 times [2021-11-23 12:34:36,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:34:36,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121367305] [2021-11-23 12:34:36,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:34:36,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:34:36,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:34:36,414 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:34:36,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:34:36,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121367305] [2021-11-23 12:34:36,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121367305] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:34:36,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748434365] [2021-11-23 12:34:36,414 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-23 12:34:36,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:34:36,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:34:36,415 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:34:36,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-23 12:34:36,474 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-23 12:34:36,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:34:36,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-23 12:34:36,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:34:36,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2021-11-23 12:34:37,408 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:34:37,408 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 41 [2021-11-23 12:34:37,453 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:34:37,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:34:37,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2021-11-23 12:34:37,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-23 12:34:37,920 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:34:37,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748434365] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:34:37,921 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:34:37,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 39 [2021-11-23 12:34:37,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887687357] [2021-11-23 12:34:37,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:34:37,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-23 12:34:37,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:34:37,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-23 12:34:37,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1309, Unknown=0, NotChecked=0, Total=1482 [2021-11-23 12:34:37,924 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 39 states, 39 states have (on average 2.6153846153846154) internal successors, (102), 39 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 12:34:38,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:34:38,616 INFO L93 Difference]: Finished difference Result 104 states and 107 transitions. [2021-11-23 12:34:38,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-23 12:34:38,616 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.6153846153846154) internal successors, (102), 39 states have internal predecessors, (102), 0 states have call successors, (0), 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 47 [2021-11-23 12:34:38,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:34:38,617 INFO L225 Difference]: With dead ends: 104 [2021-11-23 12:34:38,618 INFO L226 Difference]: Without dead ends: 102 [2021-11-23 12:34:38,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 69 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=294, Invalid=2156, Unknown=0, NotChecked=0, Total=2450 [2021-11-23 12:34:38,623 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 90 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:34:38,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 600 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 629 Invalid, 0 Unknown, 197 Unchecked, 0.3s Time] [2021-11-23 12:34:38,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-11-23 12:34:38,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 66. [2021-11-23 12:34:38,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0615384615384615) internal successors, (69), 65 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 12:34:38,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-11-23 12:34:38,636 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 47 [2021-11-23 12:34:38,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:34:38,636 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-11-23 12:34:38,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.6153846153846154) internal successors, (102), 39 states have internal predecessors, (102), 0 states have call successors, (0), 0 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 12:34:38,637 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-11-23 12:34:38,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-23 12:34:38,637 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:34:38,638 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:34:38,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-23 12:34:38,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-23 12:34:38,846 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:34:38,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:34:38,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1776667087, now seen corresponding path program 12 times [2021-11-23 12:34:38,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:34:38,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940339314] [2021-11-23 12:34:38,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:34:38,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:34:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:34:39,375 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:34:39,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:34:39,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940339314] [2021-11-23 12:34:39,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940339314] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:34:39,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021022658] [2021-11-23 12:34:39,376 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-23 12:34:39,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:34:39,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:34:39,378 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:34:39,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-23 12:34:39,522 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-23 12:34:39,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:34:39,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-23 12:34:39,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:34:39,857 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:34:40,037 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-11-23 12:34:40,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 53 [2021-11-23 12:34:40,178 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-11-23 12:34:40,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 56 [2021-11-23 12:34:40,592 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:34:40,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2021-11-23 12:34:40,625 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:34:40,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:34:44,826 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_170| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_170| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 6 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_170| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_170|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 16)))))) is different from false [2021-11-23 12:35:00,730 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_171| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int) (|v_ULTIMATE.start_main_~k~0#1_50| Int) (|v_ULTIMATE.start_main_~i~0#1_170| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_170| (+ |v_ULTIMATE.start_main_~i~0#1_171| 1)) (<= 6 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_171| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_171|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_170| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~k~0#1_50| |v_ULTIMATE.start_main_~i~0#1_170|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 16))))) (< |v_ULTIMATE.start_main_~i~0#1_171| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-23 12:35:00,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 48 [2021-11-23 12:35:00,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 438 treesize of output 430 [2021-11-23 12:35:01,226 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-11-23 12:35:01,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021022658] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:35:01,226 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:35:01,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 45 [2021-11-23 12:35:01,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689244810] [2021-11-23 12:35:01,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:35:01,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-11-23 12:35:01,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:35:01,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-11-23 12:35:01,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=1562, Unknown=10, NotChecked=166, Total=1980 [2021-11-23 12:35:01,230 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 45 states, 45 states have (on average 2.422222222222222) internal successors, (109), 45 states have internal predecessors, (109), 0 states have call successors, (0), 0 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 12:35:03,518 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse1 (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_171| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int) (|v_ULTIMATE.start_main_~k~0#1_50| Int) (|v_ULTIMATE.start_main_~i~0#1_170| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_170| (+ |v_ULTIMATE.start_main_~i~0#1_171| 1)) (<= 6 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_171| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_171|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_170| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~k~0#1_50| |v_ULTIMATE.start_main_~i~0#1_170|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 16))))) (< |v_ULTIMATE.start_main_~i~0#1_171| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) .cse0 (<= |c_ULTIMATE.start_main_~i~0#1| 4) (< .cse1 .cse2) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) .cse3 (or (and .cse4 (< 0 |c_ULTIMATE.start_main_~j~0#1|) .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (<= 5 .cse1) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) .cse5 (<= 4 |c_ULTIMATE.start_main_~i~0#1|))) is different from false [2021-11-23 12:35:05,523 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~i~0#1_160| Int)) (let ((.cse0 (+ |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~i~0#1_160|)) (.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_160| 4))))) (and (<= |v_ULTIMATE.start_main_~i~0#1_160| 4) (<= (+ |v_ULTIMATE.start_main_~i~0#1_160| 1) |c_ULTIMATE.start_main_~i~0#1|) (< .cse0 .cse1) (<= 4 |v_ULTIMATE.start_main_~i~0#1_160|) (<= 5 .cse0) (< .cse1 (+ 10000 |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~i~0#1_160|))))) (forall ((|v_ULTIMATE.start_main_~i~0#1_170| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_170| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 6 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_170| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_170|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 16)))))) (< |c_ULTIMATE.start_main_~j~0#1| 10000)) is different from false [2021-11-23 12:35:05,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:35:05,559 INFO L93 Difference]: Finished difference Result 102 states and 105 transitions. [2021-11-23 12:35:05,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 12:35:05,560 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.422222222222222) internal successors, (109), 45 states have internal predecessors, (109), 0 states have call successors, (0), 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 47 [2021-11-23 12:35:05,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:35:05,560 INFO L225 Difference]: With dead ends: 102 [2021-11-23 12:35:05,560 INFO L226 Difference]: Without dead ends: 100 [2021-11-23 12:35:05,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 67 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 783 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=280, Invalid=1794, Unknown=12, NotChecked=364, Total=2450 [2021-11-23 12:35:05,562 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 69 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:35:05,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 287 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 218 Invalid, 0 Unknown, 137 Unchecked, 0.2s Time] [2021-11-23 12:35:05,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-11-23 12:35:05,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 66. [2021-11-23 12:35:05,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0615384615384615) internal successors, (69), 65 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 12:35:05,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-11-23 12:35:05,585 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 47 [2021-11-23 12:35:05,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:35:05,586 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-11-23 12:35:05,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.422222222222222) internal successors, (109), 45 states have internal predecessors, (109), 0 states have call successors, (0), 0 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 12:35:05,586 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-11-23 12:35:05,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 12:35:05,586 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:35:05,587 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:35:05,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2021-11-23 12:35:05,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-23 12:35:05,787 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:35:05,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:35:05,788 INFO L85 PathProgramCache]: Analyzing trace with hash 517748324, now seen corresponding path program 13 times [2021-11-23 12:35:05,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:35:05,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709148085] [2021-11-23 12:35:05,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:35:05,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:35:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:35:05,946 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 33 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:35:05,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:35:05,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709148085] [2021-11-23 12:35:05,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709148085] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:35:05,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883781313] [2021-11-23 12:35:05,947 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 12:35:05,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:35:05,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:35:05,950 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:35:05,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-23 12:35:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:35:06,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-23 12:35:06,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:35:06,248 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 50 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:35:06,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:35:06,356 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 50 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:35:06,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883781313] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:35:06,356 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:35:06,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 23 [2021-11-23 12:35:06,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516460472] [2021-11-23 12:35:06,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:35:06,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-23 12:35:06,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:35:06,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-23 12:35:06,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=375, Unknown=0, NotChecked=0, Total=506 [2021-11-23 12:35:06,358 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 23 states, 23 states have (on average 3.608695652173913) internal successors, (83), 23 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:35:06,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:35:06,643 INFO L93 Difference]: Finished difference Result 124 states and 127 transitions. [2021-11-23 12:35:06,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 12:35:06,644 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.608695652173913) internal successors, (83), 23 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-23 12:35:06,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:35:06,644 INFO L225 Difference]: With dead ends: 124 [2021-11-23 12:35:06,645 INFO L226 Difference]: Without dead ends: 69 [2021-11-23 12:35:06,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=302, Invalid=888, Unknown=0, NotChecked=0, Total=1190 [2021-11-23 12:35:06,646 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 170 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:35:06,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 125 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:35:06,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-23 12:35:06,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 52. [2021-11-23 12:35:06,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0392156862745099) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 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 12:35:06,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2021-11-23 12:35:06,655 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 51 [2021-11-23 12:35:06,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:35:06,656 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2021-11-23 12:35:06,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.608695652173913) internal successors, (83), 23 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:35:06,656 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2021-11-23 12:35:06,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-23 12:35:06,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:35:06,657 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:35:06,685 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-23 12:35:06,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-23 12:35:06,874 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:35:06,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:35:06,874 INFO L85 PathProgramCache]: Analyzing trace with hash -39125401, now seen corresponding path program 14 times [2021-11-23 12:35:06,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:35:06,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483908391] [2021-11-23 12:35:06,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:35:06,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:35:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:35:07,362 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:35:07,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:35:07,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483908391] [2021-11-23 12:35:07,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483908391] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:35:07,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383752674] [2021-11-23 12:35:07,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:35:07,363 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:35:07,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:35:07,366 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:35:07,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-23 12:35:07,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:35:07,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:35:07,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-23 12:35:07,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:35:07,944 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:35:08,072 INFO L354 Elim1Store]: treesize reduction 34, result has 20.9 percent of original size [2021-11-23 12:35:08,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2021-11-23 12:35:08,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-23 12:35:08,418 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:35:08,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:35:19,013 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_213| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 7 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_213| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_213|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 20)))) (< |v_ULTIMATE.start_main_~i~0#1_213| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-23 12:35:19,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-11-23 12:35:19,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 92 [2021-11-23 12:35:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2021-11-23 12:35:19,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383752674] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:35:19,286 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:35:19,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 43 [2021-11-23 12:35:19,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042097254] [2021-11-23 12:35:19,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:35:19,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-11-23 12:35:19,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:35:19,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-11-23 12:35:19,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1525, Unknown=4, NotChecked=80, Total=1806 [2021-11-23 12:35:19,289 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 43 states, 43 states have (on average 2.5813953488372094) internal successors, (111), 43 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 12:35:21,662 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse1 (< 0 |c_ULTIMATE.start_main_~j~0#1|)) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_213| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 7 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_213| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_213|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 20)))) (< |v_ULTIMATE.start_main_~i~0#1_213| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) .cse0 (= 5 |c_ULTIMATE.start_main_~i~0#1|) .cse1 (< (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|) .cse2) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) .cse3 (or (and .cse4 .cse1 .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) .cse5)) is different from false [2021-11-23 12:35:22,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:35:22,198 INFO L93 Difference]: Finished difference Result 66 states and 67 transitions. [2021-11-23 12:35:22,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-23 12:35:22,199 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 2.5813953488372094) internal successors, (111), 43 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 51 [2021-11-23 12:35:22,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:35:22,200 INFO L225 Difference]: With dead ends: 66 [2021-11-23 12:35:22,200 INFO L226 Difference]: Without dead ends: 64 [2021-11-23 12:35:22,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 950 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=461, Invalid=3082, Unknown=5, NotChecked=234, Total=3782 [2021-11-23 12:35:22,202 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 204 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:35:22,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 321 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 690 Invalid, 0 Unknown, 71 Unchecked, 0.4s Time] [2021-11-23 12:35:22,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-23 12:35:22,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2021-11-23 12:35:22,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 55 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 12:35:22,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2021-11-23 12:35:22,210 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 51 [2021-11-23 12:35:22,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:35:22,211 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2021-11-23 12:35:22,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.5813953488372094) internal successors, (111), 43 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 12:35:22,211 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2021-11-23 12:35:22,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-23 12:35:22,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:35:22,212 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:35:22,241 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-23 12:35:22,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-23 12:35:22,431 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:35:22,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:35:22,432 INFO L85 PathProgramCache]: Analyzing trace with hash 579910557, now seen corresponding path program 15 times [2021-11-23 12:35:22,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:35:22,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64630191] [2021-11-23 12:35:22,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:35:22,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:35:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:35:22,810 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:35:22,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:35:22,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64630191] [2021-11-23 12:35:22,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64630191] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:35:22,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1497263128] [2021-11-23 12:35:22,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 12:35:22,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:35:22,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:35:22,811 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:35:22,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-23 12:35:22,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-11-23 12:35:22,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:35:22,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-23 12:35:22,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:35:23,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-11-23 12:35:25,151 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-11-23 12:35:25,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 50 [2021-11-23 12:35:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 45 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:35:25,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:35:25,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2021-11-23 12:35:25,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 49 [2021-11-23 12:35:26,443 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 12 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:35:26,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1497263128] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:35:26,443 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:35:26,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 22, 22] total 59 [2021-11-23 12:35:26,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308647959] [2021-11-23 12:35:26,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:35:26,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-11-23 12:35:26,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:35:26,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-11-23 12:35:26,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=443, Invalid=2978, Unknown=1, NotChecked=0, Total=3422 [2021-11-23 12:35:26,447 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand has 59 states, 59 states have (on average 2.6440677966101696) internal successors, (156), 59 states have internal predecessors, (156), 0 states have call successors, (0), 0 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 12:35:28,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:35:28,903 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions. [2021-11-23 12:35:28,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-23 12:35:28,903 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 2.6440677966101696) internal successors, (156), 59 states have internal predecessors, (156), 0 states have call successors, (0), 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 55 [2021-11-23 12:35:28,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:35:28,904 INFO L225 Difference]: With dead ends: 88 [2021-11-23 12:35:28,904 INFO L226 Difference]: Without dead ends: 60 [2021-11-23 12:35:28,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2457 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1143, Invalid=7412, Unknown=1, NotChecked=0, Total=8556 [2021-11-23 12:35:28,908 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 82 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:35:28,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 348 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 418 Invalid, 0 Unknown, 85 Unchecked, 0.2s Time] [2021-11-23 12:35:28,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-23 12:35:28,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-11-23 12:35:28,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0338983050847457) internal successors, (61), 59 states have internal predecessors, (61), 0 states have call successors, (0), 0 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 12:35:28,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2021-11-23 12:35:28,918 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 55 [2021-11-23 12:35:28,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:35:28,918 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2021-11-23 12:35:28,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 2.6440677966101696) internal successors, (156), 59 states have internal predecessors, (156), 0 states have call successors, (0), 0 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 12:35:28,919 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2021-11-23 12:35:28,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-23 12:35:28,919 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:35:28,920 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:35:28,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-23 12:35:29,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:35:29,133 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:35:29,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:35:29,133 INFO L85 PathProgramCache]: Analyzing trace with hash -2120352682, now seen corresponding path program 16 times [2021-11-23 12:35:29,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:35:29,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434403690] [2021-11-23 12:35:29,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:35:29,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:35:29,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:35:29,552 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:35:29,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:35:29,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434403690] [2021-11-23 12:35:29,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434403690] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:35:29,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902044527] [2021-11-23 12:35:29,553 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 12:35:29,553 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:35:29,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:35:29,554 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:35:29,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-23 12:35:29,606 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 12:35:29,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:35:29,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-23 12:35:29,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:35:30,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:35:30,269 INFO L354 Elim1Store]: treesize reduction 34, result has 20.9 percent of original size [2021-11-23 12:35:30,269 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2021-11-23 12:35:30,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-23 12:35:30,680 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:35:30,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:35:40,956 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_261| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_261| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 8 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_261| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_261|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 24)))))) is different from false [2021-11-23 12:35:40,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-11-23 12:35:40,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 92 [2021-11-23 12:35:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 135 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2021-11-23 12:35:41,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902044527] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:35:41,213 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:35:41,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 47 [2021-11-23 12:35:41,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659008069] [2021-11-23 12:35:41,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:35:41,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-23 12:35:41,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:35:41,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-23 12:35:41,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=1852, Unknown=5, NotChecked=88, Total=2162 [2021-11-23 12:35:41,216 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand has 47 states, 47 states have (on average 2.702127659574468) internal successors, (127), 47 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 12:35:43,626 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse1 (< 0 |c_ULTIMATE.start_main_~j~0#1|)) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_261| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_261| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 8 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_261| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_261|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 24)))))) .cse0 .cse1 (< (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|) .cse2) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) .cse3 (or (and .cse4 .cse1 .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (= 6 |c_ULTIMATE.start_main_~i~0#1|) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) .cse5)) is different from false [2021-11-23 12:35:44,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:35:44,388 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2021-11-23 12:35:44,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 12:35:44,389 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 2.702127659574468) internal successors, (127), 47 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-11-23 12:35:44,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:35:44,393 INFO L225 Difference]: With dead ends: 74 [2021-11-23 12:35:44,394 INFO L226 Difference]: Without dead ends: 72 [2021-11-23 12:35:44,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 66 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1150 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=517, Invalid=3775, Unknown=6, NotChecked=258, Total=4556 [2021-11-23 12:35:44,396 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 148 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 12:35:44,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 514 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 975 Invalid, 0 Unknown, 101 Unchecked, 0.6s Time] [2021-11-23 12:35:44,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-11-23 12:35:44,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 64. [2021-11-23 12:35:44,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 63 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:35:44,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2021-11-23 12:35:44,407 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 59 [2021-11-23 12:35:44,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:35:44,408 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2021-11-23 12:35:44,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 2.702127659574468) internal successors, (127), 47 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 12:35:44,409 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2021-11-23 12:35:44,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-23 12:35:44,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:35:44,410 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:35:44,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-11-23 12:35:44,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:35:44,634 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:35:44,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:35:44,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1474636300, now seen corresponding path program 17 times [2021-11-23 12:35:44,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:35:44,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230523468] [2021-11-23 12:35:44,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:35:44,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:35:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:35:45,088 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:35:45,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:35:45,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230523468] [2021-11-23 12:35:45,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230523468] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:35:45,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803708920] [2021-11-23 12:35:45,089 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-23 12:35:45,089 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:35:45,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:35:45,090 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:35:45,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-11-23 12:35:45,167 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-11-23 12:35:45,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:35:45,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-23 12:35:45,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:35:45,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-23 12:35:46,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-23 12:35:46,205 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:35:46,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:35:46,348 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2021-11-23 12:35:46,349 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-23 12:35:46,629 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:35:46,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803708920] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:35:46,629 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:35:46,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22, 22] total 46 [2021-11-23 12:35:46,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131551315] [2021-11-23 12:35:46,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:35:46,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-23 12:35:46,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:35:46,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-23 12:35:46,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1885, Unknown=0, NotChecked=0, Total=2070 [2021-11-23 12:35:46,631 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 46 states, 46 states have (on average 2.869565217391304) internal successors, (132), 46 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 12:35:48,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:35:48,293 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions. [2021-11-23 12:35:48,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-23 12:35:48,294 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.869565217391304) internal successors, (132), 46 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-23 12:35:48,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:35:48,294 INFO L225 Difference]: With dead ends: 116 [2021-11-23 12:35:48,294 INFO L226 Difference]: Without dead ends: 114 [2021-11-23 12:35:48,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 100 SyntacticMatches, 3 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1473 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=609, Invalid=5091, Unknown=0, NotChecked=0, Total=5700 [2021-11-23 12:35:48,296 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 274 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 274 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 12:35:48,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [274 Valid, 581 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 12:35:48,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2021-11-23 12:35:48,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 73. [2021-11-23 12:35:48,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.0416666666666667) internal successors, (75), 72 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:35:48,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 75 transitions. [2021-11-23 12:35:48,308 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 75 transitions. Word has length 63 [2021-11-23 12:35:48,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:35:48,309 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 75 transitions. [2021-11-23 12:35:48,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.869565217391304) internal successors, (132), 46 states have internal predecessors, (132), 0 states have call successors, (0), 0 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 12:35:48,309 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 75 transitions. [2021-11-23 12:35:48,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 12:35:48,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:35:48,310 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:35:48,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2021-11-23 12:35:48,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:35:48,514 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:35:48,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:35:48,514 INFO L85 PathProgramCache]: Analyzing trace with hash 919768258, now seen corresponding path program 18 times [2021-11-23 12:35:48,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:35:48,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839278315] [2021-11-23 12:35:48,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:35:48,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:35:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:35:48,735 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 73 proven. 116 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:35:48,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:35:48,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839278315] [2021-11-23 12:35:48,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839278315] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:35:48,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1578076006] [2021-11-23 12:35:48,736 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-23 12:35:48,736 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:35:48,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:35:48,742 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:35:48,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-11-23 12:35:48,946 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-11-23 12:35:48,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:35:48,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 12:35:48,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:35:49,288 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 98 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:35:49,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:35:49,446 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 98 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:35:49,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1578076006] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:35:49,447 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:35:49,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 29 [2021-11-23 12:35:49,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892775948] [2021-11-23 12:35:49,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:35:49,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-23 12:35:49,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:35:49,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-23 12:35:49,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=609, Unknown=0, NotChecked=0, Total=812 [2021-11-23 12:35:49,451 INFO L87 Difference]: Start difference. First operand 73 states and 75 transitions. Second operand has 29 states, 29 states have (on average 3.689655172413793) internal successors, (107), 29 states have internal predecessors, (107), 0 states have call successors, (0), 0 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 12:35:49,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:35:49,678 INFO L93 Difference]: Finished difference Result 121 states and 123 transitions. [2021-11-23 12:35:49,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-23 12:35:49,679 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 3.689655172413793) internal successors, (107), 29 states have internal predecessors, (107), 0 states have call successors, (0), 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 67 [2021-11-23 12:35:49,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:35:49,680 INFO L225 Difference]: With dead ends: 121 [2021-11-23 12:35:49,680 INFO L226 Difference]: Without dead ends: 85 [2021-11-23 12:35:49,680 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=335, Invalid=997, Unknown=0, NotChecked=0, Total=1332 [2021-11-23 12:35:49,681 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 110 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:35:49,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 191 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:35:49,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-11-23 12:35:49,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 68. [2021-11-23 12:35:49,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.0298507462686568) internal successors, (69), 67 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 12:35:49,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2021-11-23 12:35:49,692 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 67 [2021-11-23 12:35:49,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:35:49,692 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2021-11-23 12:35:49,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 3.689655172413793) internal successors, (107), 29 states have internal predecessors, (107), 0 states have call successors, (0), 0 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 12:35:49,693 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2021-11-23 12:35:49,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-23 12:35:49,693 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:35:49,694 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:35:49,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-11-23 12:35:49,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-11-23 12:35:49,910 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:35:49,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:35:49,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1691967035, now seen corresponding path program 19 times [2021-11-23 12:35:49,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:35:49,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692485762] [2021-11-23 12:35:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:35:49,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:35:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:35:50,565 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:35:50,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:35:50,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692485762] [2021-11-23 12:35:50,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692485762] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:35:50,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863384949] [2021-11-23 12:35:50,566 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 12:35:50,566 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:35:50,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:35:50,567 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:35:50,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-23 12:35:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:35:50,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 45 conjunts are in the unsatisfiable core [2021-11-23 12:35:50,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:35:51,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:35:51,248 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-11-23 12:35:51,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 56 [2021-11-23 12:35:51,938 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:35:51,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2021-11-23 12:35:51,977 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:35:51,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:36:02,207 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_346| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_346| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 9 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_346| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_346|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 28)))))) is different from false [2021-11-23 12:36:02,215 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-11-23 12:36:02,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 92 [2021-11-23 12:36:02,728 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 0 proven. 185 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2021-11-23 12:36:02,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863384949] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:36:02,728 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:36:02,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 53 [2021-11-23 12:36:02,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293518576] [2021-11-23 12:36:02,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:36:02,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2021-11-23 12:36:02,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:36:02,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2021-11-23 12:36:02,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=268, Invalid=2383, Unknown=5, NotChecked=100, Total=2756 [2021-11-23 12:36:02,731 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand has 53 states, 53 states have (on average 2.7358490566037736) internal successors, (145), 53 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:36:05,157 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse1 (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and (<= 7 |c_ULTIMATE.start_main_~i~0#1|) .cse0 (< .cse1 .cse2) (forall ((|v_ULTIMATE.start_main_~i~0#1_346| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_346| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 9 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_346| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_346|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 28)))))) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) .cse3 (<= 8 .cse1) (or (and .cse4 (< 0 |c_ULTIMATE.start_main_~j~0#1|) .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) (<= |c_ULTIMATE.start_main_~i~0#1| 7) .cse5)) is different from false [2021-11-23 12:36:05,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:36:05,205 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2021-11-23 12:36:05,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-23 12:36:05,206 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 2.7358490566037736) internal successors, (145), 53 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-23 12:36:05,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:36:05,207 INFO L225 Difference]: With dead ends: 103 [2021-11-23 12:36:05,207 INFO L226 Difference]: Without dead ends: 101 [2021-11-23 12:36:05,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 100 SyntacticMatches, 6 SemanticMatches, 55 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1035 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=304, Invalid=2668, Unknown=6, NotChecked=214, Total=3192 [2021-11-23 12:36:05,209 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 73 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 687 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:36:05,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 614 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 687 Invalid, 0 Unknown, 136 Unchecked, 0.3s Time] [2021-11-23 12:36:05,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-11-23 12:36:05,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 77. [2021-11-23 12:36:05,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.0394736842105263) internal successors, (79), 76 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:36:05,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 79 transitions. [2021-11-23 12:36:05,223 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 79 transitions. Word has length 67 [2021-11-23 12:36:05,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:36:05,223 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 79 transitions. [2021-11-23 12:36:05,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 2.7358490566037736) internal successors, (145), 53 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:36:05,224 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 79 transitions. [2021-11-23 12:36:05,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 12:36:05,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:36:05,225 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:36:05,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-11-23 12:36:05,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-23 12:36:05,438 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:36:05,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:36:05,438 INFO L85 PathProgramCache]: Analyzing trace with hash -2001764357, now seen corresponding path program 20 times [2021-11-23 12:36:05,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:36:05,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748339687] [2021-11-23 12:36:05,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:36:05,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:36:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:36:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:36:05,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:36:05,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748339687] [2021-11-23 12:36:05,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748339687] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:36:05,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674835272] [2021-11-23 12:36:05,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:36:05,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:36:05,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:36:05,964 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:36:05,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-11-23 12:36:06,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:36:06,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:36:06,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-23 12:36:06,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:36:06,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2021-11-23 12:36:07,305 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:36:07,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2021-11-23 12:36:07,341 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:36:07,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:36:07,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2021-11-23 12:36:07,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-23 12:36:08,010 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 0 proven. 218 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:36:08,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674835272] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:36:08,010 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:36:08,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 24] total 51 [2021-11-23 12:36:08,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726361227] [2021-11-23 12:36:08,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:36:08,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-11-23 12:36:08,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:36:08,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-11-23 12:36:08,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=2323, Unknown=0, NotChecked=0, Total=2550 [2021-11-23 12:36:08,012 INFO L87 Difference]: Start difference. First operand 77 states and 79 transitions. Second operand has 51 states, 51 states have (on average 2.9411764705882355) internal successors, (150), 51 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:36:08,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:36:08,538 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2021-11-23 12:36:08,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-23 12:36:08,539 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 2.9411764705882355) internal successors, (150), 51 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-23 12:36:08,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:36:08,540 INFO L225 Difference]: With dead ends: 109 [2021-11-23 12:36:08,540 INFO L226 Difference]: Without dead ends: 107 [2021-11-23 12:36:08,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 110 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 884 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=282, Invalid=2688, Unknown=0, NotChecked=0, Total=2970 [2021-11-23 12:36:08,542 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 97 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:36:08,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 538 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 617 Invalid, 0 Unknown, 121 Unchecked, 0.3s Time] [2021-11-23 12:36:08,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-11-23 12:36:08,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 81. [2021-11-23 12:36:08,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.0375) internal successors, (83), 80 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:36:08,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2021-11-23 12:36:08,559 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 71 [2021-11-23 12:36:08,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:36:08,559 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2021-11-23 12:36:08,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 2.9411764705882355) internal successors, (150), 51 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:36:08,560 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2021-11-23 12:36:08,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-23 12:36:08,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:36:08,561 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:36:08,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-11-23 12:36:08,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-11-23 12:36:08,786 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:36:08,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:36:08,786 INFO L85 PathProgramCache]: Analyzing trace with hash -318532354, now seen corresponding path program 21 times [2021-11-23 12:36:08,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:36:08,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78086927] [2021-11-23 12:36:08,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:36:08,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:36:08,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:36:09,437 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:36:09,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:36:09,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78086927] [2021-11-23 12:36:09,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78086927] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:36:09,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657977193] [2021-11-23 12:36:09,438 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 12:36:09,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:36:09,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:36:09,438 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:36:09,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-11-23 12:36:09,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-11-23 12:36:09,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:36:09,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 47 conjunts are in the unsatisfiable core [2021-11-23 12:36:09,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:36:10,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:36:10,299 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-11-23 12:36:10,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 53 [2021-11-23 12:36:10,444 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-11-23 12:36:10,444 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 56 [2021-11-23 12:36:11,340 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:36:11,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2021-11-23 12:36:11,380 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 3 proven. 222 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:36:11,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:36:21,632 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_408| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 9 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_408| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_408|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 28)))) (< |v_ULTIMATE.start_main_~i~0#1_408| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-23 12:36:50,516 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_409| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_409| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|v_ULTIMATE.start_main_~k~0#1_115| Int) (|ULTIMATE.start_main_~k~0#1| Int) (|v_ULTIMATE.start_main_~i~0#1_408| Int)) (or (<= 9 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_409| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_409|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_408| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~k~0#1_115| |v_ULTIMATE.start_main_~i~0#1_408|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 28))) (< |v_ULTIMATE.start_main_~i~0#1_408| (+ |v_ULTIMATE.start_main_~i~0#1_409| 1)))))) is different from false [2021-11-23 12:36:50,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 48 [2021-11-23 12:36:50,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 438 treesize of output 430 [2021-11-23 12:36:51,201 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2021-11-23 12:36:51,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657977193] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:36:51,201 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:36:51,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 26] total 57 [2021-11-23 12:36:51,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486200307] [2021-11-23 12:36:51,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:36:51,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-11-23 12:36:51,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:36:51,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-11-23 12:36:51,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=2659, Unknown=22, NotChecked=214, Total=3192 [2021-11-23 12:36:51,203 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand has 57 states, 57 states have (on average 2.754385964912281) internal successors, (157), 57 states have internal predecessors, (157), 0 states have call successors, (0), 0 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 12:36:53,610 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse1 (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and (<= 7 |c_ULTIMATE.start_main_~i~0#1|) .cse0 (< .cse1 .cse2) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_409| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_409| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|v_ULTIMATE.start_main_~k~0#1_115| Int) (|ULTIMATE.start_main_~k~0#1| Int) (|v_ULTIMATE.start_main_~i~0#1_408| Int)) (or (<= 9 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_409| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_409|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_408| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~k~0#1_115| |v_ULTIMATE.start_main_~i~0#1_408|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 28))) (< |v_ULTIMATE.start_main_~i~0#1_408| (+ |v_ULTIMATE.start_main_~i~0#1_409| 1)))))) .cse3 (<= 8 .cse1) (or (and .cse4 (< 0 |c_ULTIMATE.start_main_~j~0#1|) .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) (<= |c_ULTIMATE.start_main_~i~0#1| 7) .cse5)) is different from false [2021-11-23 12:36:55,614 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_408| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 9 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_408| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_408|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 28)))) (< |v_ULTIMATE.start_main_~i~0#1_408| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (< |c_ULTIMATE.start_main_~j~0#1| 10000) (exists ((|v_ULTIMATE.start_main_~i~0#1_392| Int)) (let ((.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_392| 4)))) (.cse1 (+ |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~i~0#1_392|))) (and (<= |v_ULTIMATE.start_main_~i~0#1_392| 7) (<= (+ |v_ULTIMATE.start_main_~i~0#1_392| 1) |c_ULTIMATE.start_main_~i~0#1|) (<= 7 |v_ULTIMATE.start_main_~i~0#1_392|) (< .cse0 (+ 10000 |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~i~0#1_392|)) (< .cse1 .cse0) (<= 8 .cse1))))) is different from false [2021-11-23 12:36:55,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:36:55,665 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2021-11-23 12:36:55,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-23 12:36:55,666 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 57 states have (on average 2.754385964912281) internal successors, (157), 57 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-23 12:36:55,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:36:55,666 INFO L225 Difference]: With dead ends: 112 [2021-11-23 12:36:55,666 INFO L226 Difference]: Without dead ends: 110 [2021-11-23 12:36:55,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 107 SyntacticMatches, 7 SemanticMatches, 60 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1182 ImplicationChecksByTransitivity, 44.5s TimeCoverageRelationStatistics Valid=335, Invalid=2963, Unknown=24, NotChecked=460, Total=3782 [2021-11-23 12:36:55,668 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 113 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 218 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:36:55,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 592 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 622 Invalid, 0 Unknown, 218 Unchecked, 0.3s Time] [2021-11-23 12:36:55,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-11-23 12:36:55,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 81. [2021-11-23 12:36:55,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 80 states have (on average 1.0375) internal successors, (83), 80 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:36:55,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 83 transitions. [2021-11-23 12:36:55,681 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 83 transitions. Word has length 71 [2021-11-23 12:36:55,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:36:55,681 INFO L470 AbstractCegarLoop]: Abstraction has 81 states and 83 transitions. [2021-11-23 12:36:55,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 57 states have (on average 2.754385964912281) internal successors, (157), 57 states have internal predecessors, (157), 0 states have call successors, (0), 0 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 12:36:55,681 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 83 transitions. [2021-11-23 12:36:55,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-23 12:36:55,682 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:36:55,682 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:36:55,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-11-23 12:36:55,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-11-23 12:36:55,894 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:36:55,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:36:55,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1382919375, now seen corresponding path program 22 times [2021-11-23 12:36:55,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:36:55,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736230652] [2021-11-23 12:36:55,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:36:55,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:36:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:36:56,138 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 99 proven. 149 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:36:56,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:36:56,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736230652] [2021-11-23 12:36:56,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736230652] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:36:56,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190830241] [2021-11-23 12:36:56,139 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 12:36:56,139 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:36:56,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:36:56,146 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:36:56,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-11-23 12:36:56,203 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 12:36:56,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:36:56,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 12:36:56,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:36:56,686 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 128 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:36:56,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:36:56,861 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 128 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:36:56,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190830241] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:36:56,861 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:36:56,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 32 [2021-11-23 12:36:56,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513565634] [2021-11-23 12:36:56,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:36:56,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-23 12:36:56,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:36:56,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-23 12:36:56,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2021-11-23 12:36:56,863 INFO L87 Difference]: Start difference. First operand 81 states and 83 transitions. Second operand has 32 states, 32 states have (on average 3.71875) internal successors, (119), 32 states have internal predecessors, (119), 0 states have call successors, (0), 0 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 12:36:57,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:36:57,076 INFO L93 Difference]: Finished difference Result 133 states and 135 transitions. [2021-11-23 12:36:57,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-23 12:36:57,076 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.71875) internal successors, (119), 32 states have internal predecessors, (119), 0 states have call successors, (0), 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 75 [2021-11-23 12:36:57,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:36:57,077 INFO L225 Difference]: With dead ends: 133 [2021-11-23 12:36:57,077 INFO L226 Difference]: Without dead ends: 93 [2021-11-23 12:36:57,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=407, Invalid=1233, Unknown=0, NotChecked=0, Total=1640 [2021-11-23 12:36:57,078 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 150 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:36:57,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 148 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:36:57,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-11-23 12:36:57,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 76. [2021-11-23 12:36:57,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 75 states have internal predecessors, (77), 0 states have call successors, (0), 0 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 12:36:57,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2021-11-23 12:36:57,093 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 75 [2021-11-23 12:36:57,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:36:57,093 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2021-11-23 12:36:57,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.71875) internal successors, (119), 32 states have internal predecessors, (119), 0 states have call successors, (0), 0 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 12:36:57,094 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2021-11-23 12:36:57,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-23 12:36:57,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:36:57,094 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:36:57,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-11-23 12:36:57,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-23 12:36:57,302 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:36:57,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:36:57,302 INFO L85 PathProgramCache]: Analyzing trace with hash -268554572, now seen corresponding path program 23 times [2021-11-23 12:36:57,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:36:57,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131977085] [2021-11-23 12:36:57,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:36:57,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:36:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:36:57,872 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 251 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:36:57,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:36:57,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131977085] [2021-11-23 12:36:57,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131977085] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:36:57,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662148082] [2021-11-23 12:36:57,873 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-23 12:36:57,873 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:36:57,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:36:57,874 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:36:57,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-23 12:36:57,966 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-11-23 12:36:57,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:36:57,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 49 conjunts are in the unsatisfiable core [2021-11-23 12:36:57,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:36:58,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:36:58,760 INFO L354 Elim1Store]: treesize reduction 34, result has 20.9 percent of original size [2021-11-23 12:36:58,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2021-11-23 12:36:59,278 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-23 12:36:59,319 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 251 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:36:59,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:37:07,632 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_475| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 10 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_475| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_475|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 32)))) (< |v_ULTIMATE.start_main_~i~0#1_475| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-23 12:37:07,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-11-23 12:37:07,640 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 92 [2021-11-23 12:37:07,958 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 243 refuted. 0 times theorem prover too weak. 0 trivial. 8 not checked. [2021-11-23 12:37:07,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662148082] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:37:07,959 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:37:07,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 56 [2021-11-23 12:37:07,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084855789] [2021-11-23 12:37:07,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:37:07,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-11-23 12:37:07,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:37:07,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-11-23 12:37:07,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=2707, Unknown=4, NotChecked=106, Total=3080 [2021-11-23 12:37:07,960 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 56 states, 56 states have (on average 2.8392857142857144) internal successors, (159), 56 states have internal predecessors, (159), 0 states have call successors, (0), 0 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 12:37:10,438 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse1 (< 0 |c_ULTIMATE.start_main_~j~0#1|)) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and .cse0 (forall ((|v_ULTIMATE.start_main_~i~0#1_475| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 10 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_475| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_475|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 32)))) (< |v_ULTIMATE.start_main_~i~0#1_475| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (= |c_ULTIMATE.start_main_~i~0#1| 8) .cse1 (< (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|) .cse2) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) .cse3 (or (and .cse4 .cse1 .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) .cse5)) is different from false [2021-11-23 12:37:11,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:37:11,300 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2021-11-23 12:37:11,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-23 12:37:11,300 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.8392857142857144) internal successors, (159), 56 states have internal predecessors, (159), 0 states have call successors, (0), 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 75 [2021-11-23 12:37:11,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:37:11,301 INFO L225 Difference]: With dead ends: 90 [2021-11-23 12:37:11,301 INFO L226 Difference]: Without dead ends: 88 [2021-11-23 12:37:11,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 79 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1649 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=636, Invalid=5529, Unknown=5, NotChecked=310, Total=6480 [2021-11-23 12:37:11,302 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 204 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 1767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 12:37:11,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 761 Invalid, 1767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1513 Invalid, 0 Unknown, 130 Unchecked, 0.7s Time] [2021-11-23 12:37:11,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-23 12:37:11,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 80. [2021-11-23 12:37:11,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0253164556962024) internal successors, (81), 79 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:37:11,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2021-11-23 12:37:11,314 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 75 [2021-11-23 12:37:11,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:37:11,314 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2021-11-23 12:37:11,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.8392857142857144) internal successors, (159), 56 states have internal predecessors, (159), 0 states have call successors, (0), 0 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 12:37:11,314 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2021-11-23 12:37:11,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-23 12:37:11,315 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:37:11,315 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:37:11,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-23 12:37:11,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:37:11,518 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:37:11,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:37:11,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1544093034, now seen corresponding path program 24 times [2021-11-23 12:37:11,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:37:11,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098496780] [2021-11-23 12:37:11,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:11,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:37:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:12,162 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:37:12,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:37:12,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098496780] [2021-11-23 12:37:12,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098496780] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:37:12,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068373933] [2021-11-23 12:37:12,163 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-23 12:37:12,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:37:12,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:37:12,166 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:37:12,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-11-23 12:37:12,507 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2021-11-23 12:37:12,507 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:37:12,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-23 12:37:12,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:37:12,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 29 [2021-11-23 12:37:14,039 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:37:14,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2021-11-23 12:37:14,077 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:37:14,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:37:14,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2021-11-23 12:37:14,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-23 12:37:15,516 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:37:15,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068373933] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:37:15,516 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:37:15,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 28, 28] total 68 [2021-11-23 12:37:15,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676321653] [2021-11-23 12:37:15,516 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:37:15,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-11-23 12:37:15,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:37:15,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-11-23 12:37:15,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=575, Invalid=3981, Unknown=0, NotChecked=0, Total=4556 [2021-11-23 12:37:15,518 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand has 68 states, 68 states have (on average 2.8676470588235294) internal successors, (195), 68 states have internal predecessors, (195), 0 states have call successors, (0), 0 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 12:37:17,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:37:17,371 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2021-11-23 12:37:17,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-23 12:37:17,371 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 2.8676470588235294) internal successors, (195), 68 states have internal predecessors, (195), 0 states have call successors, (0), 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 79 [2021-11-23 12:37:17,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:37:17,372 INFO L225 Difference]: With dead ends: 156 [2021-11-23 12:37:17,372 INFO L226 Difference]: Without dead ends: 154 [2021-11-23 12:37:17,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 116 SyntacticMatches, 6 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3125 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1063, Invalid=8249, Unknown=0, NotChecked=0, Total=9312 [2021-11-23 12:37:17,373 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 286 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 1355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 235 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 12:37:17,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 701 Invalid, 1355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1029 Invalid, 0 Unknown, 235 Unchecked, 0.6s Time] [2021-11-23 12:37:17,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-11-23 12:37:17,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 121. [2021-11-23 12:37:17,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.025) internal successors, (123), 120 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 12:37:17,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2021-11-23 12:37:17,394 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 79 [2021-11-23 12:37:17,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:37:17,394 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2021-11-23 12:37:17,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 2.8676470588235294) internal successors, (195), 68 states have internal predecessors, (195), 0 states have call successors, (0), 0 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 12:37:17,395 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2021-11-23 12:37:17,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-23 12:37:17,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:37:17,395 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:37:17,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2021-11-23 12:37:17,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-23 12:37:17,596 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:37:17,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:37:17,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1044243235, now seen corresponding path program 25 times [2021-11-23 12:37:17,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:37:17,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956643792] [2021-11-23 12:37:17,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:17,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:37:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:18,388 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 0 proven. 318 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:37:18,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:37:18,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956643792] [2021-11-23 12:37:18,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956643792] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:37:18,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1997359583] [2021-11-23 12:37:18,389 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 12:37:18,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:37:18,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:37:18,394 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:37:18,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-11-23 12:37:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:18,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 53 conjunts are in the unsatisfiable core [2021-11-23 12:37:18,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:37:19,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:37:19,238 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-11-23 12:37:19,239 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 56 [2021-11-23 12:37:20,094 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:37:20,094 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2021-11-23 12:37:20,133 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 0 proven. 318 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:37:20,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:37:22,280 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 11 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 36)))) is different from false [2021-11-23 12:37:24,301 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_547| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_547| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 11 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_547| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_547|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 36)))))) is different from false [2021-11-23 12:37:24,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-11-23 12:37:24,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 92 [2021-11-23 12:37:24,950 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 0 proven. 281 refuted. 0 times theorem prover too weak. 0 trivial. 37 not checked. [2021-11-23 12:37:24,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1997359583] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:37:24,950 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:37:24,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 61 [2021-11-23 12:37:24,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223789967] [2021-11-23 12:37:24,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:37:24,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2021-11-23 12:37:24,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:37:24,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2021-11-23 12:37:24,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=3135, Unknown=2, NotChecked=230, Total=3660 [2021-11-23 12:37:24,953 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand has 61 states, 61 states have (on average 2.901639344262295) internal successors, (177), 61 states have internal predecessors, (177), 0 states have call successors, (0), 0 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 12:37:27,452 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) (.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and .cse0 (<= 10 .cse1) (< .cse1 .cse2) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) (<= 9 |c_ULTIMATE.start_main_~i~0#1|) .cse3 (or (and .cse4 (< 0 |c_ULTIMATE.start_main_~j~0#1|) .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (<= |c_ULTIMATE.start_main_~i~0#1| 9) (forall ((|v_ULTIMATE.start_main_~i~0#1_547| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_547| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 11 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_547| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_547|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 36)))))) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) .cse5)) is different from false [2021-11-23 12:37:27,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:37:27,551 INFO L93 Difference]: Finished difference Result 164 states and 167 transitions. [2021-11-23 12:37:27,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-23 12:37:27,552 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 61 states have (on average 2.901639344262295) internal successors, (177), 61 states have internal predecessors, (177), 0 states have call successors, (0), 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 83 [2021-11-23 12:37:27,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:37:27,553 INFO L225 Difference]: With dead ends: 164 [2021-11-23 12:37:27,553 INFO L226 Difference]: Without dead ends: 162 [2021-11-23 12:37:27,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 130 SyntacticMatches, 6 SemanticMatches, 64 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 1300 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=341, Invalid=3574, Unknown=3, NotChecked=372, Total=4290 [2021-11-23 12:37:27,554 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 123 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 1061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 235 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:37:27,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 727 Invalid, 1061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 796 Invalid, 0 Unknown, 235 Unchecked, 0.4s Time] [2021-11-23 12:37:27,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-23 12:37:27,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 126. [2021-11-23 12:37:27,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.032) internal successors, (129), 125 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:37:27,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2021-11-23 12:37:27,581 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 83 [2021-11-23 12:37:27,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:37:27,582 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 129 transitions. [2021-11-23 12:37:27,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 2.901639344262295) internal successors, (177), 61 states have internal predecessors, (177), 0 states have call successors, (0), 0 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 12:37:27,582 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 129 transitions. [2021-11-23 12:37:27,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 12:37:27,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:37:27,583 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:37:27,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-11-23 12:37:27,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-23 12:37:27,786 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:37:27,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:37:27,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1634394713, now seen corresponding path program 26 times [2021-11-23 12:37:27,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:37:27,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028439574] [2021-11-23 12:37:27,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:27,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:37:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:28,503 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:37:28,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:37:28,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028439574] [2021-11-23 12:37:28,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028439574] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:37:28,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918679106] [2021-11-23 12:37:28,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:37:28,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:37:28,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:37:28,504 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:37:28,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-11-23 12:37:28,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:37:28,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:37:28,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-23 12:37:28,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:37:29,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2021-11-23 12:37:30,120 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:37:30,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 41 [2021-11-23 12:37:30,161 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:37:30,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:37:30,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2021-11-23 12:37:30,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-23 12:37:30,980 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:37:30,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918679106] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:37:30,980 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:37:30,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28, 28] total 59 [2021-11-23 12:37:30,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698899522] [2021-11-23 12:37:30,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:37:30,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-11-23 12:37:30,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:37:30,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-11-23 12:37:30,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=3157, Unknown=0, NotChecked=0, Total=3422 [2021-11-23 12:37:30,982 INFO L87 Difference]: Start difference. First operand 126 states and 129 transitions. Second operand has 59 states, 59 states have (on average 3.0847457627118646) internal successors, (182), 59 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 12:37:32,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:37:32,554 INFO L93 Difference]: Finished difference Result 207 states and 210 transitions. [2021-11-23 12:37:32,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-23 12:37:32,555 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.0847457627118646) internal successors, (182), 59 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 87 [2021-11-23 12:37:32,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:37:32,556 INFO L225 Difference]: With dead ends: 207 [2021-11-23 12:37:32,556 INFO L226 Difference]: Without dead ends: 205 [2021-11-23 12:37:32,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 143 SyntacticMatches, 7 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1795 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=484, Invalid=6158, Unknown=0, NotChecked=0, Total=6642 [2021-11-23 12:37:32,558 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 134 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 1821 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 2189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 311 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 12:37:32,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 1716 Invalid, 2189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1821 Invalid, 0 Unknown, 311 Unchecked, 0.8s Time] [2021-11-23 12:37:32,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-23 12:37:32,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 126. [2021-11-23 12:37:32,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.032) internal successors, (129), 125 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:37:32,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2021-11-23 12:37:32,583 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 87 [2021-11-23 12:37:32,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:37:32,583 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 129 transitions. [2021-11-23 12:37:32,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.0847457627118646) internal successors, (182), 59 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 12:37:32,584 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 129 transitions. [2021-11-23 12:37:32,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 12:37:32,584 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:37:32,584 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 9, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:37:32,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-11-23 12:37:32,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:37:32,788 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:37:32,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:37:32,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1951972260, now seen corresponding path program 27 times [2021-11-23 12:37:32,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:37:32,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585469657] [2021-11-23 12:37:32,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:32,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:37:32,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:33,667 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 0 proven. 359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:37:33,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:37:33,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585469657] [2021-11-23 12:37:33,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585469657] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:37:33,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189804515] [2021-11-23 12:37:33,668 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 12:37:33,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:37:33,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:37:33,670 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:37:33,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-11-23 12:37:34,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-11-23 12:37:34,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:37:34,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 55 conjunts are in the unsatisfiable core [2021-11-23 12:37:34,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:37:34,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:37:34,774 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-11-23 12:37:34,774 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 53 [2021-11-23 12:37:34,916 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-11-23 12:37:34,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 56 [2021-11-23 12:37:35,751 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:37:35,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2021-11-23 12:37:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 3 proven. 356 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:37:35,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:37:37,945 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 11 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 36)))) is different from false [2021-11-23 12:37:39,964 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_625| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_625| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 11 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_625| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_625|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 36)))))) is different from false [2021-11-23 12:37:51,413 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_626| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_626| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int) (|v_ULTIMATE.start_main_~k~0#1_174| Int) (|v_ULTIMATE.start_main_~i~0#1_625| Int)) (or (<= 11 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_626| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_626|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_625| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~k~0#1_174| |v_ULTIMATE.start_main_~i~0#1_625|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 36))) (< |v_ULTIMATE.start_main_~i~0#1_625| (+ |v_ULTIMATE.start_main_~i~0#1_626| 1)))))) is different from false [2021-11-23 12:37:51,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 48 [2021-11-23 12:37:51,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1788 treesize of output 1756 [2021-11-23 12:37:52,676 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 0 proven. 309 refuted. 0 times theorem prover too weak. 0 trivial. 50 not checked. [2021-11-23 12:37:52,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189804515] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:37:52,676 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:37:52,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 30] total 65 [2021-11-23 12:37:52,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122712126] [2021-11-23 12:37:52,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:37:52,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-11-23 12:37:52,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:37:52,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-11-23 12:37:52,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=3456, Unknown=13, NotChecked=366, Total=4160 [2021-11-23 12:37:52,678 INFO L87 Difference]: Start difference. First operand 126 states and 129 transitions. Second operand has 65 states, 65 states have (on average 2.9076923076923076) internal successors, (189), 65 states have internal predecessors, (189), 0 states have call successors, (0), 0 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 12:37:55,194 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) (.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_626| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_626| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int) (|v_ULTIMATE.start_main_~k~0#1_174| Int) (|v_ULTIMATE.start_main_~i~0#1_625| Int)) (or (<= 11 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_626| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_626|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_625| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~k~0#1_174| |v_ULTIMATE.start_main_~i~0#1_625|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 36))) (< |v_ULTIMATE.start_main_~i~0#1_625| (+ |v_ULTIMATE.start_main_~i~0#1_626| 1)))))) .cse0 (<= 10 .cse1) (< .cse1 .cse2) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) (<= 9 |c_ULTIMATE.start_main_~i~0#1|) .cse3 (or (and .cse4 (< 0 |c_ULTIMATE.start_main_~j~0#1|) .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (<= |c_ULTIMATE.start_main_~i~0#1| 9) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) .cse5)) is different from false [2021-11-23 12:37:57,199 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|v_ULTIMATE.start_main_~i~0#1_625| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_625| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 11 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_625| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_625|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 36)))))) (exists ((|v_ULTIMATE.start_main_~i~0#1_605| Int)) (let ((.cse1 (+ |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~i~0#1_605|)) (.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_605| 4))))) (and (<= (+ |v_ULTIMATE.start_main_~i~0#1_605| 1) |c_ULTIMATE.start_main_~i~0#1|) (< .cse0 (+ 10000 |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~i~0#1_605|)) (<= 9 |v_ULTIMATE.start_main_~i~0#1_605|) (<= 10 .cse1) (< .cse1 .cse0) (<= |v_ULTIMATE.start_main_~i~0#1_605| 9)))) (< |c_ULTIMATE.start_main_~j~0#1| 10000)) is different from false [2021-11-23 12:37:57,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:37:57,312 INFO L93 Difference]: Finished difference Result 202 states and 205 transitions. [2021-11-23 12:37:57,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-23 12:37:57,313 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 2.9076923076923076) internal successors, (189), 65 states have internal predecessors, (189), 0 states have call successors, (0), 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 87 [2021-11-23 12:37:57,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:37:57,314 INFO L225 Difference]: With dead ends: 202 [2021-11-23 12:37:57,314 INFO L226 Difference]: Without dead ends: 200 [2021-11-23 12:37:57,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 137 SyntacticMatches, 7 SemanticMatches, 69 ConstructedPredicates, 5 IntricatePredicates, 1 DeprecatedPredicates, 1506 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=378, Invalid=3917, Unknown=15, NotChecked=660, Total=4970 [2021-11-23 12:37:57,315 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 106 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 1209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 301 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:37:57,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 609 Invalid, 1209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 888 Invalid, 0 Unknown, 301 Unchecked, 0.4s Time] [2021-11-23 12:37:57,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-23 12:37:57,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 126. [2021-11-23 12:37:57,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 1.032) internal successors, (129), 125 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:37:57,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 129 transitions. [2021-11-23 12:37:57,359 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 129 transitions. Word has length 87 [2021-11-23 12:37:57,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:37:57,359 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 129 transitions. [2021-11-23 12:37:57,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 2.9076923076923076) internal successors, (189), 65 states have internal predecessors, (189), 0 states have call successors, (0), 0 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 12:37:57,360 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 129 transitions. [2021-11-23 12:37:57,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-23 12:37:57,360 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:37:57,360 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:37:57,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-11-23 12:37:57,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-11-23 12:37:57,565 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:37:57,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:37:57,565 INFO L85 PathProgramCache]: Analyzing trace with hash 452548239, now seen corresponding path program 28 times [2021-11-23 12:37:57,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:37:57,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601996883] [2021-11-23 12:37:57,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:57,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:37:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:37:57,856 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 163 proven. 227 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:37:57,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:37:57,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601996883] [2021-11-23 12:37:57,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601996883] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:37:57,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273466409] [2021-11-23 12:37:57,856 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 12:37:57,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:37:57,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:37:57,857 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:37:57,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-23 12:37:57,906 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 12:37:57,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:37:57,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-23 12:37:57,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:37:58,370 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 200 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:37:58,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:37:58,537 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 200 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:37:58,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273466409] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:37:58,538 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:37:58,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 38 [2021-11-23 12:37:58,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546569036] [2021-11-23 12:37:58,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:37:58,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-23 12:37:58,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:37:58,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-23 12:37:58,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=341, Invalid=1065, Unknown=0, NotChecked=0, Total=1406 [2021-11-23 12:37:58,539 INFO L87 Difference]: Start difference. First operand 126 states and 129 transitions. Second operand has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 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 12:37:59,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:37:59,010 INFO L93 Difference]: Finished difference Result 224 states and 227 transitions. [2021-11-23 12:37:59,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-23 12:37:59,011 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 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 91 [2021-11-23 12:37:59,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:37:59,012 INFO L225 Difference]: With dead ends: 224 [2021-11-23 12:37:59,012 INFO L226 Difference]: Without dead ends: 109 [2021-11-23 12:37:59,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=817, Invalid=2723, Unknown=0, NotChecked=0, Total=3540 [2021-11-23 12:37:59,013 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 368 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:37:59,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 214 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:37:59,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-11-23 12:37:59,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 92. [2021-11-23 12:37:59,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.021978021978022) internal successors, (93), 91 states have internal predecessors, (93), 0 states have call successors, (0), 0 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 12:37:59,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2021-11-23 12:37:59,032 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 91 [2021-11-23 12:37:59,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:37:59,032 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2021-11-23 12:37:59,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.763157894736842) internal successors, (143), 38 states have internal predecessors, (143), 0 states have call successors, (0), 0 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 12:37:59,032 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2021-11-23 12:37:59,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-23 12:37:59,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:37:59,033 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:37:59,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-23 12:37:59,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:37:59,238 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:37:59,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:37:59,238 INFO L85 PathProgramCache]: Analyzing trace with hash 744423186, now seen corresponding path program 29 times [2021-11-23 12:37:59,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:37:59,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816322552] [2021-11-23 12:37:59,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:37:59,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:37:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:38:00,015 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 0 proven. 393 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:38:00,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:38:00,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816322552] [2021-11-23 12:38:00,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816322552] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:38:00,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094937903] [2021-11-23 12:38:00,016 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-23 12:38:00,016 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:38:00,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:38:00,017 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:38:00,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-11-23 12:38:00,139 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-11-23 12:38:00,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:38:00,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 57 conjunts are in the unsatisfiable core [2021-11-23 12:38:00,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:38:00,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:38:01,044 INFO L354 Elim1Store]: treesize reduction 34, result has 20.9 percent of original size [2021-11-23 12:38:01,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2021-11-23 12:38:01,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-23 12:38:01,798 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 0 proven. 393 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:38:01,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:38:16,113 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_708| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_708| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 12 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_708| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_708|)) (+ 40 |c_ULTIMATE.start_main_~#a~0#1.offset|)))))) is different from false [2021-11-23 12:38:16,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-11-23 12:38:16,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 201 [2021-11-23 12:38:16,469 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 0 proven. 383 refuted. 0 times theorem prover too weak. 0 trivial. 10 not checked. [2021-11-23 12:38:16,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094937903] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:38:16,469 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:38:16,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30, 30] total 63 [2021-11-23 12:38:16,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674136879] [2021-11-23 12:38:16,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:38:16,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2021-11-23 12:38:16,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:38:16,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2021-11-23 12:38:16,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=3483, Unknown=6, NotChecked=120, Total=3906 [2021-11-23 12:38:16,471 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand has 63 states, 63 states have (on average 3.0317460317460316) internal successors, (191), 63 states have internal predecessors, (191), 0 states have call successors, (0), 0 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 12:38:19,043 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse1 (< 0 |c_ULTIMATE.start_main_~j~0#1|)) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and .cse0 .cse1 (= |c_ULTIMATE.start_main_~i~0#1| 10) (< (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|) .cse2) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) .cse3 (forall ((|v_ULTIMATE.start_main_~i~0#1_708| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_708| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 12 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_708| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_708|)) (+ 40 |c_ULTIMATE.start_main_~#a~0#1.offset|)))))) (or (and .cse4 .cse1 .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) .cse5)) is different from false [2021-11-23 12:38:20,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:38:20,142 INFO L93 Difference]: Finished difference Result 106 states and 107 transitions. [2021-11-23 12:38:20,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-23 12:38:20,142 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.0317460317460316) internal successors, (191), 63 states have internal predecessors, (191), 0 states have call successors, (0), 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 91 [2021-11-23 12:38:20,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:38:20,143 INFO L225 Difference]: With dead ends: 106 [2021-11-23 12:38:20,143 INFO L226 Difference]: Without dead ends: 104 [2021-11-23 12:38:20,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 157 SyntacticMatches, 3 SemanticMatches, 90 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2148 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=747, Invalid=7264, Unknown=7, NotChecked=354, Total=8372 [2021-11-23 12:38:20,144 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 244 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 157 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 12:38:20,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 1016 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 1952 Invalid, 0 Unknown, 157 Unchecked, 0.9s Time] [2021-11-23 12:38:20,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-11-23 12:38:20,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2021-11-23 12:38:20,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 95 states have internal predecessors, (97), 0 states have call successors, (0), 0 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 12:38:20,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2021-11-23 12:38:20,159 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 91 [2021-11-23 12:38:20,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:38:20,160 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2021-11-23 12:38:20,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.0317460317460316) internal successors, (191), 63 states have internal predecessors, (191), 0 states have call successors, (0), 0 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 12:38:20,160 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2021-11-23 12:38:20,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-23 12:38:20,161 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:38:20,161 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:38:20,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2021-11-23 12:38:20,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:38:20,370 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:38:20,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:38:20,370 INFO L85 PathProgramCache]: Analyzing trace with hash -525439288, now seen corresponding path program 30 times [2021-11-23 12:38:20,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:38:20,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214700280] [2021-11-23 12:38:20,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:38:20,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:38:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:38:21,064 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:38:21,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:38:21,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214700280] [2021-11-23 12:38:21,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214700280] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:38:21,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827382430] [2021-11-23 12:38:21,065 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-23 12:38:21,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:38:21,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:38:21,066 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:38:21,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-11-23 12:38:21,472 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2021-11-23 12:38:21,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:38:21,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-23 12:38:21,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:38:22,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-11-23 12:38:23,512 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:38:23,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 41 [2021-11-23 12:38:23,561 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:38:23,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:38:24,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2021-11-23 12:38:24,377 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-23 12:38:25,368 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 0 proven. 431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:38:25,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827382430] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:38:25,368 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:38:25,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 32, 32] total 78 [2021-11-23 12:38:25,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561702898] [2021-11-23 12:38:25,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:38:25,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2021-11-23 12:38:25,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:38:25,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2021-11-23 12:38:25,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=718, Invalid=5288, Unknown=0, NotChecked=0, Total=6006 [2021-11-23 12:38:25,370 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 78 states, 78 states have (on average 3.0128205128205128) internal successors, (235), 78 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:27,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:38:27,723 INFO L93 Difference]: Finished difference Result 187 states and 199 transitions. [2021-11-23 12:38:27,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2021-11-23 12:38:27,724 INFO L78 Accepts]: Start accepts. Automaton has has 78 states, 78 states have (on average 3.0128205128205128) internal successors, (235), 78 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-23 12:38:27,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:38:27,725 INFO L225 Difference]: With dead ends: 187 [2021-11-23 12:38:27,725 INFO L226 Difference]: Without dead ends: 185 [2021-11-23 12:38:27,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 140 SyntacticMatches, 7 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3945 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=1193, Invalid=10363, Unknown=0, NotChecked=0, Total=11556 [2021-11-23 12:38:27,726 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 350 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 1386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 162 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 12:38:27,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [350 Valid, 934 Invalid, 1386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1153 Invalid, 0 Unknown, 162 Unchecked, 0.6s Time] [2021-11-23 12:38:27,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-11-23 12:38:27,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 145. [2021-11-23 12:38:27,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.0208333333333333) internal successors, (147), 144 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 12:38:27,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 147 transitions. [2021-11-23 12:38:27,757 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 147 transitions. Word has length 95 [2021-11-23 12:38:27,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:38:27,757 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 147 transitions. [2021-11-23 12:38:27,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 78 states, 78 states have (on average 3.0128205128205128) internal successors, (235), 78 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:27,758 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 147 transitions. [2021-11-23 12:38:27,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-23 12:38:27,758 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:38:27,759 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:38:27,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-11-23 12:38:27,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:38:27,982 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:38:27,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:38:27,982 INFO L85 PathProgramCache]: Analyzing trace with hash 423281281, now seen corresponding path program 31 times [2021-11-23 12:38:27,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:38:27,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749969987] [2021-11-23 12:38:27,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:38:27,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:38:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:38:28,864 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:38:28,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:38:28,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749969987] [2021-11-23 12:38:28,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749969987] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:38:28,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735636640] [2021-11-23 12:38:28,864 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 12:38:28,865 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:38:28,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:38:28,866 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:38:28,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-11-23 12:38:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:38:28,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 61 conjunts are in the unsatisfiable core [2021-11-23 12:38:28,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:38:29,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:38:30,021 INFO L354 Elim1Store]: treesize reduction 34, result has 20.9 percent of original size [2021-11-23 12:38:30,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2021-11-23 12:38:30,874 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-23 12:38:30,919 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 476 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:38:30,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:38:41,288 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_796| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_796| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 13 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_796| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_796|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 44)))))) is different from false [2021-11-23 12:38:41,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-11-23 12:38:41,297 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 92 [2021-11-23 12:38:41,722 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2021-11-23 12:38:41,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735636640] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:38:41,723 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:38:41,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32, 32] total 68 [2021-11-23 12:38:41,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034892152] [2021-11-23 12:38:41,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:38:41,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-11-23 12:38:41,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:38:41,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-11-23 12:38:41,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=4099, Unknown=4, NotChecked=130, Total=4556 [2021-11-23 12:38:41,725 INFO L87 Difference]: Start difference. First operand 145 states and 147 transitions. Second operand has 68 states, 68 states have (on average 3.0441176470588234) internal successors, (207), 68 states have internal predecessors, (207), 0 states have call successors, (0), 0 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 12:38:44,456 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse1 (< 0 |c_ULTIMATE.start_main_~j~0#1|)) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_796| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_796| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 13 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_796| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_796|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 44)))))) (= |c_ULTIMATE.start_main_~i~0#1| 11) .cse0 .cse1 (< (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|) .cse2) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) .cse3 (or (and .cse4 .cse1 .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) .cse5)) is different from false [2021-11-23 12:38:45,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:38:45,738 INFO L93 Difference]: Finished difference Result 197 states and 199 transitions. [2021-11-23 12:38:45,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-23 12:38:45,738 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.0441176470588234) internal successors, (207), 68 states have internal predecessors, (207), 0 states have call successors, (0), 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 99 [2021-11-23 12:38:45,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:38:45,740 INFO L225 Difference]: With dead ends: 197 [2021-11-23 12:38:45,740 INFO L226 Difference]: Without dead ends: 195 [2021-11-23 12:38:45,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 160 SyntacticMatches, 3 SemanticMatches, 97 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2492 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=810, Invalid=8505, Unknown=5, NotChecked=382, Total=9702 [2021-11-23 12:38:45,742 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 232 mSDsluCounter, 1083 mSDsCounter, 0 mSdLazyCounter, 2242 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 2507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:38:45,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 1123 Invalid, 2507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2242 Invalid, 0 Unknown, 103 Unchecked, 1.1s Time] [2021-11-23 12:38:45,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-11-23 12:38:45,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 145. [2021-11-23 12:38:45,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.0208333333333333) internal successors, (147), 144 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 12:38:45,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 147 transitions. [2021-11-23 12:38:45,780 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 147 transitions. Word has length 99 [2021-11-23 12:38:45,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:38:45,780 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 147 transitions. [2021-11-23 12:38:45,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.0441176470588234) internal successors, (207), 68 states have internal predecessors, (207), 0 states have call successors, (0), 0 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 12:38:45,780 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 147 transitions. [2021-11-23 12:38:45,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-23 12:38:45,781 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:38:45,781 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:38:45,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-11-23 12:38:45,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:38:45,981 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:38:45,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:38:45,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1441996105, now seen corresponding path program 32 times [2021-11-23 12:38:45,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:38:45,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077484915] [2021-11-23 12:38:45,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:38:45,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:38:46,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:38:47,107 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 0 proven. 518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:38:47,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:38:47,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077484915] [2021-11-23 12:38:47,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077484915] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:38:47,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980269530] [2021-11-23 12:38:47,107 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:38:47,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:38:47,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:38:47,108 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:38:47,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-11-23 12:38:47,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:38:47,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:38:47,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 63 conjunts are in the unsatisfiable core [2021-11-23 12:38:47,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:38:47,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-23 12:38:48,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-23 12:38:48,802 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 0 proven. 518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:38:48,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:38:49,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2021-11-23 12:38:49,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-23 12:38:50,395 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 0 proven. 518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:38:50,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980269530] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:38:50,395 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:38:50,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 91 [2021-11-23 12:38:50,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270007145] [2021-11-23 12:38:50,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:38:50,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2021-11-23 12:38:50,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:38:50,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-11-23 12:38:50,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=450, Invalid=7740, Unknown=0, NotChecked=0, Total=8190 [2021-11-23 12:38:50,397 INFO L87 Difference]: Start difference. First operand 145 states and 147 transitions. Second operand has 91 states, 91 states have (on average 3.2967032967032965) internal successors, (300), 91 states have internal predecessors, (300), 0 states have call successors, (0), 0 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 12:38:56,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:38:56,063 INFO L93 Difference]: Finished difference Result 259 states and 262 transitions. [2021-11-23 12:38:56,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2021-11-23 12:38:56,064 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.2967032967032965) internal successors, (300), 91 states have internal predecessors, (300), 0 states have call successors, (0), 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 103 [2021-11-23 12:38:56,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:38:56,065 INFO L225 Difference]: With dead ends: 259 [2021-11-23 12:38:56,065 INFO L226 Difference]: Without dead ends: 257 [2021-11-23 12:38:56,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5554 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1323, Invalid=17583, Unknown=0, NotChecked=0, Total=18906 [2021-11-23 12:38:56,066 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 263 mSDsluCounter, 2803 mSDsCounter, 0 mSdLazyCounter, 4432 mSolverCounterSat, 189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 2875 SdHoareTripleChecker+Invalid, 4621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 189 IncrementalHoareTripleChecker+Valid, 4432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:38:56,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 2875 Invalid, 4621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [189 Valid, 4432 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-23 12:38:56,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-11-23 12:38:56,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 150. [2021-11-23 12:38:56,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.0268456375838926) internal successors, (153), 149 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:38:56,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 153 transitions. [2021-11-23 12:38:56,129 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 153 transitions. Word has length 103 [2021-11-23 12:38:56,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:38:56,130 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 153 transitions. [2021-11-23 12:38:56,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.2967032967032965) internal successors, (300), 91 states have internal predecessors, (300), 0 states have call successors, (0), 0 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 12:38:56,130 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 153 transitions. [2021-11-23 12:38:56,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 12:38:56,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:38:56,131 INFO L514 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:38:56,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2021-11-23 12:38:56,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:38:56,338 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:38:56,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:38:56,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1204287469, now seen corresponding path program 33 times [2021-11-23 12:38:56,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:38:56,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476733776] [2021-11-23 12:38:56,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:38:56,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:38:56,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:38:56,715 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 243 proven. 321 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:38:56,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:38:56,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476733776] [2021-11-23 12:38:56,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476733776] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:38:56,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513556288] [2021-11-23 12:38:56,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 12:38:56,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:38:56,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:38:56,716 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:38:56,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-11-23 12:38:57,048 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2021-11-23 12:38:57,048 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:38:57,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-23 12:38:57,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:38:57,644 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 288 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:38:57,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:38:57,879 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 288 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:38:57,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513556288] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:38:57,880 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:38:57,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 44 [2021-11-23 12:38:57,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722253997] [2021-11-23 12:38:57,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:38:57,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2021-11-23 12:38:57,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:38:57,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-11-23 12:38:57,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=453, Invalid=1439, Unknown=0, NotChecked=0, Total=1892 [2021-11-23 12:38:57,885 INFO L87 Difference]: Start difference. First operand 150 states and 153 transitions. Second operand has 44 states, 44 states have (on average 3.7954545454545454) internal successors, (167), 44 states have internal predecessors, (167), 0 states have call successors, (0), 0 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 12:38:58,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:38:58,550 INFO L93 Difference]: Finished difference Result 264 states and 267 transitions. [2021-11-23 12:38:58,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-23 12:38:58,550 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.7954545454545454) internal successors, (167), 44 states have internal predecessors, (167), 0 states have call successors, (0), 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 107 [2021-11-23 12:38:58,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:38:58,551 INFO L225 Difference]: With dead ends: 264 [2021-11-23 12:38:58,551 INFO L226 Difference]: Without dead ends: 125 [2021-11-23 12:38:58,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1199 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1093, Invalid=3737, Unknown=0, NotChecked=0, Total=4830 [2021-11-23 12:38:58,553 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 431 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:38:58,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 281 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:38:58,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-23 12:38:58,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 108. [2021-11-23 12:38:58,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 1.0186915887850467) internal successors, (109), 107 states have internal predecessors, (109), 0 states have call successors, (0), 0 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 12:38:58,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 109 transitions. [2021-11-23 12:38:58,583 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 109 transitions. Word has length 107 [2021-11-23 12:38:58,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:38:58,584 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 109 transitions. [2021-11-23 12:38:58,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.7954545454545454) internal successors, (167), 44 states have internal predecessors, (167), 0 states have call successors, (0), 0 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 12:38:58,584 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 109 transitions. [2021-11-23 12:38:58,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 12:38:58,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:38:58,585 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:38:58,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-11-23 12:38:58,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2021-11-23 12:38:58,798 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:38:58,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:38:58,798 INFO L85 PathProgramCache]: Analyzing trace with hash -334860944, now seen corresponding path program 34 times [2021-11-23 12:38:58,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:38:58,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672542939] [2021-11-23 12:38:58,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:38:58,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:38:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:00,122 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 567 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:00,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:39:00,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672542939] [2021-11-23 12:39:00,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672542939] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:39:00,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041527314] [2021-11-23 12:39:00,123 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 12:39:00,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:39:00,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:39:00,124 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:39:00,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-11-23 12:39:00,214 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 12:39:00,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:39:00,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-23 12:39:00,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:39:00,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:39:01,117 INFO L354 Elim1Store]: treesize reduction 34, result has 20.9 percent of original size [2021-11-23 12:39:01,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2021-11-23 12:39:01,901 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-23 12:39:01,946 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 567 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:01,946 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:39:22,053 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_941| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_941| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 14 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_941| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_941|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 48)))))) is different from false [2021-11-23 12:39:22,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-11-23 12:39:22,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 92 [2021-11-23 12:39:23,008 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 12 not checked. [2021-11-23 12:39:23,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041527314] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:39:23,008 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:39:23,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 98 [2021-11-23 12:39:23,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732083608] [2021-11-23 12:39:23,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:39:23,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2021-11-23 12:39:23,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:39:23,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2021-11-23 12:39:23,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=8785, Unknown=5, NotChecked=190, Total=9506 [2021-11-23 12:39:23,011 INFO L87 Difference]: Start difference. First operand 108 states and 109 transitions. Second operand has 98 states, 98 states have (on average 3.183673469387755) internal successors, (312), 98 states have internal predecessors, (312), 0 states have call successors, (0), 0 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 12:39:26,293 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* 4 |c_ULTIMATE.start_main_~i~0#1|))) (.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse3 (< 0 |c_ULTIMATE.start_main_~j~0#1|)) (.cse5 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse2 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse4 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse7 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse6 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and (= |c_ULTIMATE.start_main_~i~0#1| 12) (<= 14 .cse0) (< 47 .cse1) .cse2 .cse3 (<= .cse1 48) (<= 14 (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1| |c_ULTIMATE.start_main_~k~0#1|)) (forall ((|v_ULTIMATE.start_main_~i~0#1_941| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_941| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 14 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_941| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_941|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 48)))))) (< (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|) .cse0) (< .cse0 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) .cse4 (= |c_ULTIMATE.start_main_~#a~0#1.offset| 0) (or (and .cse5 .cse3 .cse6) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse7)) (or (and .cse5 .cse2 .cse4) (and .cse7 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) .cse6)) is different from false [2021-11-23 12:39:29,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:29,717 INFO L93 Difference]: Finished difference Result 122 states and 123 transitions. [2021-11-23 12:39:29,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-23 12:39:29,717 INFO L78 Accepts]: Start accepts. Automaton has has 98 states, 98 states have (on average 3.183673469387755) internal successors, (312), 98 states have internal predecessors, (312), 0 states have call successors, (0), 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 107 [2021-11-23 12:39:29,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:29,720 INFO L225 Difference]: With dead ends: 122 [2021-11-23 12:39:29,720 INFO L226 Difference]: Without dead ends: 120 [2021-11-23 12:39:29,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 151 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5591 ImplicationChecksByTransitivity, 27.3s TimeCoverageRelationStatistics Valid=1225, Invalid=16069, Unknown=6, NotChecked=522, Total=17822 [2021-11-23 12:39:29,722 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 341 mSDsluCounter, 1723 mSDsCounter, 0 mSdLazyCounter, 3360 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 3743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 3360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:29,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 1766 Invalid, 3743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 3360 Invalid, 0 Unknown, 158 Unchecked, 1.7s Time] [2021-11-23 12:39:29,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-23 12:39:29,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 112. [2021-11-23 12:39:29,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 1.018018018018018) internal successors, (113), 111 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 12:39:29,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 113 transitions. [2021-11-23 12:39:29,745 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 113 transitions. Word has length 107 [2021-11-23 12:39:29,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:29,746 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 113 transitions. [2021-11-23 12:39:29,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 3.183673469387755) internal successors, (312), 98 states have internal predecessors, (312), 0 states have call successors, (0), 0 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 12:39:29,746 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 113 transitions. [2021-11-23 12:39:29,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-23 12:39:29,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:29,747 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:29,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2021-11-23 12:39:29,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-11-23 12:39:29,947 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:39:29,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:29,949 INFO L85 PathProgramCache]: Analyzing trace with hash -434143706, now seen corresponding path program 35 times [2021-11-23 12:39:29,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:39:29,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683944063] [2021-11-23 12:39:29,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:29,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:39:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:30,835 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 613 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:30,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:39:30,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683944063] [2021-11-23 12:39:30,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683944063] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:39:30,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662692101] [2021-11-23 12:39:30,836 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-23 12:39:30,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:39:30,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:39:30,837 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:39:30,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-11-23 12:39:31,024 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-11-23 12:39:31,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:39:31,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-23 12:39:31,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:39:31,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2021-11-23 12:39:33,307 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:39:33,308 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2021-11-23 12:39:33,357 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 613 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:33,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:39:33,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2021-11-23 12:39:33,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-23 12:39:34,538 INFO L134 CoverageAnalysis]: Checked inductivity of 613 backedges. 0 proven. 613 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:34,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662692101] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:39:34,538 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:39:34,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34, 34] total 71 [2021-11-23 12:39:34,539 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287210812] [2021-11-23 12:39:34,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:39:34,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-11-23 12:39:34,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:39:34,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-11-23 12:39:34,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=319, Invalid=4651, Unknown=0, NotChecked=0, Total=4970 [2021-11-23 12:39:34,541 INFO L87 Difference]: Start difference. First operand 112 states and 113 transitions. Second operand has 71 states, 71 states have (on average 3.23943661971831) internal successors, (230), 71 states have internal predecessors, (230), 0 states have call successors, (0), 0 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 12:39:36,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:36,025 INFO L93 Difference]: Finished difference Result 174 states and 176 transitions. [2021-11-23 12:39:36,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-23 12:39:36,025 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 3.23943661971831) internal successors, (230), 71 states have internal predecessors, (230), 0 states have call successors, (0), 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 12:39:36,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:36,026 INFO L225 Difference]: With dead ends: 174 [2021-11-23 12:39:36,026 INFO L226 Difference]: Without dead ends: 172 [2021-11-23 12:39:36,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 187 SyntacticMatches, 8 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2112 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=452, Invalid=6858, Unknown=0, NotChecked=0, Total=7310 [2021-11-23 12:39:36,027 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 148 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1945 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 462 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:36,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 1945 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1571 Invalid, 0 Unknown, 462 Unchecked, 0.8s Time] [2021-11-23 12:39:36,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-23 12:39:36,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 121. [2021-11-23 12:39:36,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 120 states have (on average 1.025) internal successors, (123), 120 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 12:39:36,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 123 transitions. [2021-11-23 12:39:36,060 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 123 transitions. Word has length 111 [2021-11-23 12:39:36,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:36,060 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 123 transitions. [2021-11-23 12:39:36,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 3.23943661971831) internal successors, (230), 71 states have internal predecessors, (230), 0 states have call successors, (0), 0 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 12:39:36,061 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 123 transitions. [2021-11-23 12:39:36,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 12:39:36,062 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:36,062 INFO L514 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:36,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2021-11-23 12:39:36,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-11-23 12:39:36,269 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:39:36,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:36,270 INFO L85 PathProgramCache]: Analyzing trace with hash -1187953700, now seen corresponding path program 36 times [2021-11-23 12:39:36,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:39:36,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744005026] [2021-11-23 12:39:36,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:36,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:39:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:36,712 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 289 proven. 374 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:36,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:39:36,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744005026] [2021-11-23 12:39:36,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744005026] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:39:36,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105067448] [2021-11-23 12:39:36,713 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-23 12:39:36,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:39:36,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:39:36,714 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:39:36,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2021-11-23 12:39:37,417 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2021-11-23 12:39:37,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:39:37,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-23 12:39:37,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:39:38,227 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 338 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:38,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:39:38,439 INFO L134 CoverageAnalysis]: Checked inductivity of 663 backedges. 338 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:38,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105067448] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:39:38,440 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:39:38,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 47 [2021-11-23 12:39:38,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012311318] [2021-11-23 12:39:38,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:39:38,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-23 12:39:38,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:39:38,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-23 12:39:38,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=515, Invalid=1647, Unknown=0, NotChecked=0, Total=2162 [2021-11-23 12:39:38,442 INFO L87 Difference]: Start difference. First operand 121 states and 123 transitions. Second operand has 47 states, 47 states have (on average 3.8085106382978724) internal successors, (179), 47 states have internal predecessors, (179), 0 states have call successors, (0), 0 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 12:39:38,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:38,818 INFO L93 Difference]: Finished difference Result 193 states and 195 transitions. [2021-11-23 12:39:38,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 12:39:38,824 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 3.8085106382978724) internal successors, (179), 47 states have internal predecessors, (179), 0 states have call successors, (0), 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 115 [2021-11-23 12:39:38,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:38,826 INFO L225 Difference]: With dead ends: 193 [2021-11-23 12:39:38,826 INFO L226 Difference]: Without dead ends: 133 [2021-11-23 12:39:38,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 915 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=872, Invalid=2788, Unknown=0, NotChecked=0, Total=3660 [2021-11-23 12:39:38,827 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 308 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:38,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [308 Valid, 271 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:39:38,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-23 12:39:38,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 116. [2021-11-23 12:39:38,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 115 states have (on average 1.017391304347826) internal successors, (117), 115 states have internal predecessors, (117), 0 states have call successors, (0), 0 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 12:39:38,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 117 transitions. [2021-11-23 12:39:38,855 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 117 transitions. Word has length 115 [2021-11-23 12:39:38,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:38,856 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 117 transitions. [2021-11-23 12:39:38,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 3.8085106382978724) internal successors, (179), 47 states have internal predecessors, (179), 0 states have call successors, (0), 0 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 12:39:38,856 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 117 transitions. [2021-11-23 12:39:38,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-23 12:39:38,857 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:38,857 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:38,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2021-11-23 12:39:39,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-11-23 12:39:39,078 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:39:39,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:39,079 INFO L85 PathProgramCache]: Analyzing trace with hash -462995489, now seen corresponding path program 37 times [2021-11-23 12:39:39,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:39:39,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054191272] [2021-11-23 12:39:39,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:39,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:39:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:40,208 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:40,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:39:40,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054191272] [2021-11-23 12:39:40,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054191272] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:39:40,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620951495] [2021-11-23 12:39:40,208 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 12:39:40,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:39:40,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:39:40,214 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:39:40,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2021-11-23 12:39:40,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:40,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 69 conjunts are in the unsatisfiable core [2021-11-23 12:39:40,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:39:41,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:39:41,502 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-11-23 12:39:41,502 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 56 [2021-11-23 12:39:43,104 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:39:43,104 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2021-11-23 12:39:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:43,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:39:53,497 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_1099| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_1099| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 15 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1099| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_1099|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 52)))))) is different from false [2021-11-23 12:39:53,504 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-11-23 12:39:53,507 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 92 [2021-11-23 12:39:54,812 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 653 refuted. 0 times theorem prover too weak. 0 trivial. 13 not checked. [2021-11-23 12:39:54,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620951495] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:39:54,812 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:39:54,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 77 [2021-11-23 12:39:54,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504458015] [2021-11-23 12:39:54,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:39:54,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2021-11-23 12:39:54,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:39:54,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2021-11-23 12:39:54,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=382, Invalid=5317, Unknown=5, NotChecked=148, Total=5852 [2021-11-23 12:39:54,814 INFO L87 Difference]: Start difference. First operand 116 states and 117 transitions. Second operand has 77 states, 77 states have (on average 3.1298701298701297) internal successors, (241), 77 states have internal predecessors, (241), 0 states have call successors, (0), 0 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 12:39:57,804 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse1 (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and (<= 13 |c_ULTIMATE.start_main_~i~0#1|) (<= |c_ULTIMATE.start_main_~i~0#1| 13) .cse0 (forall ((|v_ULTIMATE.start_main_~i~0#1_1099| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_1099| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 15 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1099| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_1099|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 52)))))) (< .cse1 .cse2) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) (<= 14 .cse1) .cse3 (or (and .cse4 (< 0 |c_ULTIMATE.start_main_~j~0#1|) .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) .cse5)) is different from false [2021-11-23 12:39:57,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:39:57,909 INFO L93 Difference]: Finished difference Result 175 states and 177 transitions. [2021-11-23 12:39:57,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-23 12:39:57,910 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 77 states have (on average 3.1298701298701297) internal successors, (241), 77 states have internal predecessors, (241), 0 states have call successors, (0), 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 115 [2021-11-23 12:39:57,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:39:57,911 INFO L225 Difference]: With dead ends: 175 [2021-11-23 12:39:57,911 INFO L226 Difference]: Without dead ends: 173 [2021-11-23 12:39:57,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 182 SyntacticMatches, 8 SemanticMatches, 79 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2064 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=418, Invalid=5746, Unknown=6, NotChecked=310, Total=6480 [2021-11-23 12:39:57,914 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 175 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1539 SdHoareTripleChecker+Invalid, 2061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 385 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 12:39:57,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 1539 Invalid, 2061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1634 Invalid, 0 Unknown, 385 Unchecked, 0.9s Time] [2021-11-23 12:39:57,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-23 12:39:57,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 125. [2021-11-23 12:39:57,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.0241935483870968) internal successors, (127), 124 states have internal predecessors, (127), 0 states have call successors, (0), 0 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 12:39:57,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 127 transitions. [2021-11-23 12:39:57,959 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 127 transitions. Word has length 115 [2021-11-23 12:39:57,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:39:57,960 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 127 transitions. [2021-11-23 12:39:57,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 77 states have (on average 3.1298701298701297) internal successors, (241), 77 states have internal predecessors, (241), 0 states have call successors, (0), 0 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 12:39:57,960 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 127 transitions. [2021-11-23 12:39:57,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-23 12:39:57,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:39:57,961 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:39:58,003 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2021-11-23 12:39:58,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2021-11-23 12:39:58,186 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:39:58,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:39:58,186 INFO L85 PathProgramCache]: Analyzing trace with hash -438337259, now seen corresponding path program 38 times [2021-11-23 12:39:58,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:39:58,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969778767] [2021-11-23 12:39:58,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:39:58,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:39:58,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:39:59,175 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 0 proven. 716 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:39:59,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:39:59,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969778767] [2021-11-23 12:39:59,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969778767] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:39:59,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754679460] [2021-11-23 12:39:59,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:39:59,176 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:39:59,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:39:59,177 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:39:59,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2021-11-23 12:39:59,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:39:59,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:39:59,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-23 12:39:59,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:40:00,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2021-11-23 12:40:01,956 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:40:01,956 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2021-11-23 12:40:02,005 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 0 proven. 716 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:02,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:40:02,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2021-11-23 12:40:02,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-23 12:40:03,355 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 0 proven. 716 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:03,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754679460] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:40:03,355 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:40:03,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 36, 36] total 75 [2021-11-23 12:40:03,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143095472] [2021-11-23 12:40:03,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:40:03,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2021-11-23 12:40:03,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:03,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2021-11-23 12:40:03,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=5215, Unknown=0, NotChecked=0, Total=5550 [2021-11-23 12:40:03,358 INFO L87 Difference]: Start difference. First operand 125 states and 127 transitions. Second operand has 75 states, 75 states have (on average 3.28) internal successors, (246), 75 states have internal predecessors, (246), 0 states have call successors, (0), 0 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 12:40:05,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:05,019 INFO L93 Difference]: Finished difference Result 180 states and 182 transitions. [2021-11-23 12:40:05,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-23 12:40:05,019 INFO L78 Accepts]: Start accepts. Automaton has has 75 states, 75 states have (on average 3.28) internal successors, (246), 75 states have internal predecessors, (246), 0 states have call successors, (0), 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 119 [2021-11-23 12:40:05,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:05,020 INFO L225 Difference]: With dead ends: 180 [2021-11-23 12:40:05,021 INFO L226 Difference]: Without dead ends: 178 [2021-11-23 12:40:05,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 202 SyntacticMatches, 8 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2366 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=475, Invalid=7715, Unknown=0, NotChecked=0, Total=8190 [2021-11-23 12:40:05,021 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 185 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 1784 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 2397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 568 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:05,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 1782 Invalid, 2397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1784 Invalid, 0 Unknown, 568 Unchecked, 0.9s Time] [2021-11-23 12:40:05,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-11-23 12:40:05,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 129. [2021-11-23 12:40:05,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.0234375) internal successors, (131), 128 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 12:40:05,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 131 transitions. [2021-11-23 12:40:05,070 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 131 transitions. Word has length 119 [2021-11-23 12:40:05,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:05,071 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 131 transitions. [2021-11-23 12:40:05,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 3.28) internal successors, (246), 75 states have internal predecessors, (246), 0 states have call successors, (0), 0 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 12:40:05,071 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 131 transitions. [2021-11-23 12:40:05,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-23 12:40:05,072 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:05,072 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:05,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2021-11-23 12:40:05,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:40:05,290 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:40:05,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:05,291 INFO L85 PathProgramCache]: Analyzing trace with hash 286620952, now seen corresponding path program 39 times [2021-11-23 12:40:05,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:05,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747859771] [2021-11-23 12:40:05,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:05,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:06,626 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 0 proven. 723 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:06,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:06,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747859771] [2021-11-23 12:40:06,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747859771] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:40:06,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677981091] [2021-11-23 12:40:06,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 12:40:06,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:40:06,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:40:06,628 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:40:06,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-11-23 12:40:07,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-11-23 12:40:07,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:40:07,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-23 12:40:07,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:40:08,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:40:08,414 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-11-23 12:40:08,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 53 [2021-11-23 12:40:08,587 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-11-23 12:40:08,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 56 [2021-11-23 12:40:10,027 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:40:10,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2021-11-23 12:40:10,074 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 3 proven. 720 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:10,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:40:24,477 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_1209| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_1209| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 15 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1209| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_1209|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 52)))))) is different from false [2021-11-23 12:40:26,497 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~k~0#1_326| Int) (|ULTIMATE.start_main_~k~0#1| Int) (|v_ULTIMATE.start_main_~i~0#1_1209| Int)) (or (<= 15 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1209| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~k~0#1_326| |v_ULTIMATE.start_main_~i~0#1_1209|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 52))) (< |v_ULTIMATE.start_main_~i~0#1_1209| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-23 12:40:28,552 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_1210| Int)) (or (forall ((|v_ULTIMATE.start_main_~k~0#1_326| Int) (|ULTIMATE.start_main_~k~0#1| Int) (|v_ULTIMATE.start_main_~i~0#1_1209| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_1209| (+ |v_ULTIMATE.start_main_~i~0#1_1210| 1)) (<= 15 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1210| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_1210|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1209| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~k~0#1_326| |v_ULTIMATE.start_main_~i~0#1_1209|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 52))))) (< |v_ULTIMATE.start_main_~i~0#1_1210| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-23 12:40:28,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 48 [2021-11-23 12:40:28,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 438 treesize of output 430 [2021-11-23 12:40:29,886 INFO L134 CoverageAnalysis]: Checked inductivity of 723 backedges. 0 proven. 653 refuted. 0 times theorem prover too weak. 0 trivial. 70 not checked. [2021-11-23 12:40:29,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677981091] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:40:29,886 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:40:29,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37, 38] total 81 [2021-11-23 12:40:29,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984706362] [2021-11-23 12:40:29,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:40:29,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2021-11-23 12:40:29,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:29,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2021-11-23 12:40:29,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=5599, Unknown=9, NotChecked=462, Total=6480 [2021-11-23 12:40:29,889 INFO L87 Difference]: Start difference. First operand 129 states and 131 transitions. Second operand has 81 states, 81 states have (on average 3.123456790123457) internal successors, (253), 81 states have internal predecessors, (253), 0 states have call successors, (0), 0 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 12:40:32,788 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse1 (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and (<= 13 |c_ULTIMATE.start_main_~i~0#1|) (<= |c_ULTIMATE.start_main_~i~0#1| 13) (forall ((|v_ULTIMATE.start_main_~i~0#1_1210| Int)) (or (forall ((|v_ULTIMATE.start_main_~k~0#1_326| Int) (|ULTIMATE.start_main_~k~0#1| Int) (|v_ULTIMATE.start_main_~i~0#1_1209| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_1209| (+ |v_ULTIMATE.start_main_~i~0#1_1210| 1)) (<= 15 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1210| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_1210|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1209| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~k~0#1_326| |v_ULTIMATE.start_main_~i~0#1_1209|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 52))))) (< |v_ULTIMATE.start_main_~i~0#1_1210| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) .cse0 (< .cse1 .cse2) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) (<= 14 .cse1) .cse3 (or (and .cse4 (< 0 |c_ULTIMATE.start_main_~j~0#1|) .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) .cse5)) is different from false [2021-11-23 12:40:36,886 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~i~0#1_1181| Int)) (let ((.cse0 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ (* |v_ULTIMATE.start_main_~i~0#1_1181| 4) |c_ULTIMATE.start_main_~#a~0#1.offset|))) (.cse1 (+ |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~i~0#1_1181|))) (and (<= 13 |v_ULTIMATE.start_main_~i~0#1_1181|) (< .cse0 (+ 10000 |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~i~0#1_1181|)) (< .cse1 .cse0) (<= |v_ULTIMATE.start_main_~i~0#1_1181| 13) (<= (+ |v_ULTIMATE.start_main_~i~0#1_1181| 1) |c_ULTIMATE.start_main_~i~0#1|) (<= 14 .cse1)))) (forall ((|v_ULTIMATE.start_main_~i~0#1_1209| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_1209| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 15 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1209| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_1209|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 52)))))) (< |c_ULTIMATE.start_main_~j~0#1| 10000)) is different from false [2021-11-23 12:40:36,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:36,968 INFO L93 Difference]: Finished difference Result 184 states and 186 transitions. [2021-11-23 12:40:36,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-23 12:40:36,969 INFO L78 Accepts]: Start accepts. Automaton has has 81 states, 81 states have (on average 3.123456790123457) internal successors, (253), 81 states have internal predecessors, (253), 0 states have call successors, (0), 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 119 [2021-11-23 12:40:36,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:36,970 INFO L225 Difference]: With dead ends: 184 [2021-11-23 12:40:36,970 INFO L226 Difference]: Without dead ends: 182 [2021-11-23 12:40:36,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 190 SyntacticMatches, 9 SemanticMatches, 85 ConstructedPredicates, 5 IntricatePredicates, 1 DeprecatedPredicates, 2258 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=463, Invalid=6188, Unknown=11, NotChecked=820, Total=7482 [2021-11-23 12:40:36,971 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 211 mSDsluCounter, 1335 mSDsCounter, 0 mSdLazyCounter, 1374 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1384 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 410 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:36,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 1384 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1374 Invalid, 0 Unknown, 410 Unchecked, 0.7s Time] [2021-11-23 12:40:36,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-23 12:40:37,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 129. [2021-11-23 12:40:37,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.0234375) internal successors, (131), 128 states have internal predecessors, (131), 0 states have call successors, (0), 0 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 12:40:37,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 131 transitions. [2021-11-23 12:40:37,020 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 131 transitions. Word has length 119 [2021-11-23 12:40:37,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:37,021 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 131 transitions. [2021-11-23 12:40:37,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 3.123456790123457) internal successors, (253), 81 states have internal predecessors, (253), 0 states have call successors, (0), 0 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 12:40:37,021 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 131 transitions. [2021-11-23 12:40:37,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-23 12:40:37,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:37,022 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:37,069 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2021-11-23 12:40:37,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:40:37,250 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:40:37,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:37,250 INFO L85 PathProgramCache]: Analyzing trace with hash 38287179, now seen corresponding path program 40 times [2021-11-23 12:40:37,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:37,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899290079] [2021-11-23 12:40:37,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:37,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:37,858 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 339 proven. 431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:37,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:37,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899290079] [2021-11-23 12:40:37,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899290079] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:40:37,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040955178] [2021-11-23 12:40:37,858 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 12:40:37,859 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:40:37,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:40:37,862 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:40:37,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2021-11-23 12:40:37,943 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 12:40:37,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:40:37,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 32 conjunts are in the unsatisfiable core [2021-11-23 12:40:37,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:40:38,968 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 392 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:38,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:40:39,260 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 392 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:39,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040955178] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:40:39,261 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:40:39,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 50 [2021-11-23 12:40:39,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730937943] [2021-11-23 12:40:39,261 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:40:39,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-11-23 12:40:39,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:39,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-11-23 12:40:39,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=581, Invalid=1869, Unknown=0, NotChecked=0, Total=2450 [2021-11-23 12:40:39,263 INFO L87 Difference]: Start difference. First operand 129 states and 131 transitions. Second operand has 50 states, 50 states have (on average 3.82) internal successors, (191), 50 states have internal predecessors, (191), 0 states have call successors, (0), 0 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 12:40:39,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:39,715 INFO L93 Difference]: Finished difference Result 205 states and 207 transitions. [2021-11-23 12:40:39,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-23 12:40:39,716 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 3.82) internal successors, (191), 50 states have internal predecessors, (191), 0 states have call successors, (0), 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 123 [2021-11-23 12:40:39,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:39,717 INFO L225 Difference]: With dead ends: 205 [2021-11-23 12:40:39,717 INFO L226 Difference]: Without dead ends: 141 [2021-11-23 12:40:39,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1041 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=986, Invalid=3174, Unknown=0, NotChecked=0, Total=4160 [2021-11-23 12:40:39,718 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 348 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:39,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [348 Valid, 279 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 12:40:39,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-11-23 12:40:39,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 124. [2021-11-23 12:40:39,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.016260162601626) internal successors, (125), 123 states have internal predecessors, (125), 0 states have call successors, (0), 0 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 12:40:39,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 125 transitions. [2021-11-23 12:40:39,755 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 125 transitions. Word has length 123 [2021-11-23 12:40:39,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:39,756 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 125 transitions. [2021-11-23 12:40:39,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 3.82) internal successors, (191), 50 states have internal predecessors, (191), 0 states have call successors, (0), 0 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 12:40:39,756 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 125 transitions. [2021-11-23 12:40:39,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-23 12:40:39,756 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:39,756 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:39,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2021-11-23 12:40:39,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:40:39,957 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:40:39,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:39,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1783265742, now seen corresponding path program 41 times [2021-11-23 12:40:39,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:39,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124917996] [2021-11-23 12:40:39,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:39,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:41,004 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 0 proven. 773 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:41,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:41,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124917996] [2021-11-23 12:40:41,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124917996] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:40:41,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150291066] [2021-11-23 12:40:41,005 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-23 12:40:41,005 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:40:41,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:40:41,006 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:40:41,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2021-11-23 12:40:41,284 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-11-23 12:40:41,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:40:41,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 73 conjunts are in the unsatisfiable core [2021-11-23 12:40:41,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:40:42,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:40:42,882 INFO L354 Elim1Store]: treesize reduction 34, result has 20.9 percent of original size [2021-11-23 12:40:42,882 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2021-11-23 12:40:44,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-23 12:40:44,178 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 0 proven. 773 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:44,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:40:50,981 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_1324| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_1324| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 16 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1324| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_1324|)) (+ 56 |c_ULTIMATE.start_main_~#a~0#1.offset|)))))) is different from false [2021-11-23 12:40:50,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-11-23 12:40:50,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 201 [2021-11-23 12:40:51,579 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 0 proven. 759 refuted. 0 times theorem prover too weak. 0 trivial. 14 not checked. [2021-11-23 12:40:51,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150291066] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:40:51,579 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:40:51,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38, 38] total 80 [2021-11-23 12:40:51,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891844613] [2021-11-23 12:40:51,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:40:51,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-11-23 12:40:51,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:40:51,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-11-23 12:40:51,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=5780, Unknown=3, NotChecked=154, Total=6320 [2021-11-23 12:40:51,581 INFO L87 Difference]: Start difference. First operand 124 states and 125 transitions. Second operand has 80 states, 80 states have (on average 3.1875) internal successors, (255), 80 states have internal predecessors, (255), 0 states have call successors, (0), 0 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 12:40:54,818 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse1 (< 0 |c_ULTIMATE.start_main_~j~0#1|)) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_1324| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_1324| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 16 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1324| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_1324|)) (+ 56 |c_ULTIMATE.start_main_~#a~0#1.offset|)))))) .cse0 .cse1 (< (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|) .cse2) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) .cse3 (or (and .cse4 .cse1 .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (= 14 |c_ULTIMATE.start_main_~i~0#1|) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) .cse5)) is different from false [2021-11-23 12:40:56,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:40:56,871 INFO L93 Difference]: Finished difference Result 138 states and 139 transitions. [2021-11-23 12:40:56,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-11-23 12:40:56,872 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 3.1875) internal successors, (255), 80 states have internal predecessors, (255), 0 states have call successors, (0), 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 123 [2021-11-23 12:40:56,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:40:56,873 INFO L225 Difference]: With dead ends: 138 [2021-11-23 12:40:56,873 INFO L226 Difference]: Without dead ends: 136 [2021-11-23 12:40:56,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 216 SyntacticMatches, 3 SemanticMatches, 115 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 3521 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=978, Invalid=12136, Unknown=4, NotChecked=454, Total=13572 [2021-11-23 12:40:56,875 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 370 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 3935 mSolverCounterSat, 245 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 2059 SdHoareTripleChecker+Invalid, 4338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 245 IncrementalHoareTripleChecker+Valid, 3935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-23 12:40:56,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 2059 Invalid, 4338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [245 Valid, 3935 Invalid, 0 Unknown, 158 Unchecked, 1.9s Time] [2021-11-23 12:40:56,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2021-11-23 12:40:56,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 128. [2021-11-23 12:40:56,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.015748031496063) internal successors, (129), 127 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:40:56,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 129 transitions. [2021-11-23 12:40:56,922 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 129 transitions. Word has length 123 [2021-11-23 12:40:56,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:40:56,922 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 129 transitions. [2021-11-23 12:40:56,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 3.1875) internal successors, (255), 80 states have internal predecessors, (255), 0 states have call successors, (0), 0 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 12:40:56,923 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 129 transitions. [2021-11-23 12:40:56,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-23 12:40:56,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:40:56,923 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:40:56,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2021-11-23 12:40:57,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2021-11-23 12:40:57,124 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:40:57,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:40:57,125 INFO L85 PathProgramCache]: Analyzing trace with hash -223990908, now seen corresponding path program 42 times [2021-11-23 12:40:57,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:40:57,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123155157] [2021-11-23 12:40:57,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:40:57,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:40:57,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:40:58,426 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 0 proven. 827 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:40:58,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:40:58,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123155157] [2021-11-23 12:40:58,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123155157] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:40:58,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473646683] [2021-11-23 12:40:58,427 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-23 12:40:58,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:40:58,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:40:58,427 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:40:58,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2021-11-23 12:40:58,949 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 16 check-sat command(s) [2021-11-23 12:40:58,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:40:58,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-23 12:40:58,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:41:00,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-11-23 12:41:02,858 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-11-23 12:41:02,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 50 [2021-11-23 12:41:02,914 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 378 proven. 449 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:41:02,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:41:05,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 31 [2021-11-23 12:41:05,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 49 [2021-11-23 12:41:06,871 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 264 proven. 563 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:41:06,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473646683] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:41:06,872 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:41:06,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 40, 40] total 113 [2021-11-23 12:41:06,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630153810] [2021-11-23 12:41:06,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:41:06,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 113 states [2021-11-23 12:41:06,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:41:06,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2021-11-23 12:41:06,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1483, Invalid=11173, Unknown=0, NotChecked=0, Total=12656 [2021-11-23 12:41:06,876 INFO L87 Difference]: Start difference. First operand 128 states and 129 transitions. Second operand has 113 states, 113 states have (on average 3.2920353982300883) internal successors, (372), 113 states have internal predecessors, (372), 0 states have call successors, (0), 0 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 12:41:15,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:41:15,472 INFO L93 Difference]: Finished difference Result 196 states and 198 transitions. [2021-11-23 12:41:15,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2021-11-23 12:41:15,473 INFO L78 Accepts]: Start accepts. Automaton has has 113 states, 113 states have (on average 3.2920353982300883) internal successors, (372), 113 states have internal predecessors, (372), 0 states have call successors, (0), 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 127 [2021-11-23 12:41:15,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:41:15,473 INFO L225 Difference]: With dead ends: 196 [2021-11-23 12:41:15,474 INFO L226 Difference]: Without dead ends: 132 [2021-11-23 12:41:15,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 196 SyntacticMatches, 2 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12409 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=4181, Invalid=37639, Unknown=0, NotChecked=0, Total=41820 [2021-11-23 12:41:15,476 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 173 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 1649 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 2124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 1649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 369 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 12:41:15,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 1090 Invalid, 2124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 1649 Invalid, 0 Unknown, 369 Unchecked, 0.9s Time] [2021-11-23 12:41:15,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-23 12:41:15,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2021-11-23 12:41:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.015267175572519) internal successors, (133), 131 states have internal predecessors, (133), 0 states have call successors, (0), 0 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 12:41:15,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 133 transitions. [2021-11-23 12:41:15,538 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 133 transitions. Word has length 127 [2021-11-23 12:41:15,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:41:15,539 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 133 transitions. [2021-11-23 12:41:15,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 113 states, 113 states have (on average 3.2920353982300883) internal successors, (372), 113 states have internal predecessors, (372), 0 states have call successors, (0), 0 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 12:41:15,539 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 133 transitions. [2021-11-23 12:41:15,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-23 12:41:15,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:41:15,540 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:41:15,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2021-11-23 12:41:15,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-11-23 12:41:15,740 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:41:15,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:41:15,741 INFO L85 PathProgramCache]: Analyzing trace with hash -569550019, now seen corresponding path program 43 times [2021-11-23 12:41:15,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:41:15,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747634635] [2021-11-23 12:41:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:41:15,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:41:15,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:41:16,927 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:41:16,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:41:16,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747634635] [2021-11-23 12:41:16,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747634635] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:41:16,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [684730845] [2021-11-23 12:41:16,927 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 12:41:16,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:41:16,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:41:16,929 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:41:16,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2021-11-23 12:41:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:41:17,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 77 conjunts are in the unsatisfiable core [2021-11-23 12:41:17,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:41:18,619 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:41:18,860 INFO L354 Elim1Store]: treesize reduction 34, result has 20.9 percent of original size [2021-11-23 12:41:18,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2021-11-23 12:41:20,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-23 12:41:20,365 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 888 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:41:20,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:41:22,663 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 17 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 60)))) is different from false [2021-11-23 12:41:24,683 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_1444| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 17 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1444| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_1444|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 60)))) (< |v_ULTIMATE.start_main_~i~0#1_1444| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-23 12:41:24,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-11-23 12:41:24,691 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 92 [2021-11-23 12:41:25,264 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 0 proven. 827 refuted. 0 times theorem prover too weak. 0 trivial. 61 not checked. [2021-11-23 12:41:25,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [684730845] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:41:25,264 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:41:25,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 40] total 84 [2021-11-23 12:41:25,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010580290] [2021-11-23 12:41:25,265 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:41:25,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 84 states [2021-11-23 12:41:25,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:41:25,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants. [2021-11-23 12:41:25,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=6263, Unknown=2, NotChecked=322, Total=6972 [2021-11-23 12:41:25,266 INFO L87 Difference]: Start difference. First operand 132 states and 133 transitions. Second operand has 84 states, 84 states have (on average 3.2261904761904763) internal successors, (271), 84 states have internal predecessors, (271), 0 states have call successors, (0), 0 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 12:41:28,614 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse1 (< 0 |c_ULTIMATE.start_main_~j~0#1|)) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and (= |c_ULTIMATE.start_main_~i~0#1| 15) .cse0 .cse1 (forall ((|v_ULTIMATE.start_main_~i~0#1_1444| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 17 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1444| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_1444|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 60)))) (< |v_ULTIMATE.start_main_~i~0#1_1444| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (< (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|) .cse2) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) .cse3 (or (and .cse4 .cse1 .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) .cse5)) is different from false [2021-11-23 12:41:31,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:41:31,088 INFO L93 Difference]: Finished difference Result 146 states and 147 transitions. [2021-11-23 12:41:31,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-11-23 12:41:31,088 INFO L78 Accepts]: Start accepts. Automaton has has 84 states, 84 states have (on average 3.2261904761904763) internal successors, (271), 84 states have internal predecessors, (271), 0 states have call successors, (0), 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 131 [2021-11-23 12:41:31,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:41:31,089 INFO L225 Difference]: With dead ends: 146 [2021-11-23 12:41:31,089 INFO L226 Difference]: Without dead ends: 144 [2021-11-23 12:41:31,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 216 SyntacticMatches, 5 SemanticMatches, 121 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 3900 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=985, Invalid=13304, Unknown=3, NotChecked=714, Total=15006 [2021-11-23 12:41:31,091 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 257 mSDsluCounter, 2300 mSDsCounter, 0 mSdLazyCounter, 4373 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 4844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 4373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 266 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:41:31,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 2352 Invalid, 4844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 4373 Invalid, 0 Unknown, 266 Unchecked, 2.2s Time] [2021-11-23 12:41:31,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2021-11-23 12:41:31,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 136. [2021-11-23 12:41:31,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.0148148148148148) internal successors, (137), 135 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:41:31,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 137 transitions. [2021-11-23 12:41:31,146 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 137 transitions. Word has length 131 [2021-11-23 12:41:31,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:41:31,146 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 137 transitions. [2021-11-23 12:41:31,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 84 states, 84 states have (on average 3.2261904761904763) internal successors, (271), 84 states have internal predecessors, (271), 0 states have call successors, (0), 0 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 12:41:31,146 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 137 transitions. [2021-11-23 12:41:31,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-23 12:41:31,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:41:31,147 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:41:31,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2021-11-23 12:41:31,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-11-23 12:41:31,348 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:41:31,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:41:31,348 INFO L85 PathProgramCache]: Analyzing trace with hash 506248563, now seen corresponding path program 44 times [2021-11-23 12:41:31,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:41:31,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891429370] [2021-11-23 12:41:31,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:41:31,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:41:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:41:32,772 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:41:32,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:41:32,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891429370] [2021-11-23 12:41:32,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891429370] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:41:32,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892754038] [2021-11-23 12:41:32,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:41:32,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:41:32,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:41:32,778 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:41:32,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2021-11-23 12:41:32,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:41:32,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:41:32,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 79 conjunts are in the unsatisfiable core [2021-11-23 12:41:32,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:41:33,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2021-11-23 12:41:35,586 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:41:35,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2021-11-23 12:41:35,645 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:41:35,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:41:35,897 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2021-11-23 12:41:35,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-23 12:41:37,193 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:41:37,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892754038] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:41:37,193 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:41:37,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40, 40] total 83 [2021-11-23 12:41:37,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417021591] [2021-11-23 12:41:37,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:41:37,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2021-11-23 12:41:37,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:41:37,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2021-11-23 12:41:37,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=6435, Unknown=0, NotChecked=0, Total=6806 [2021-11-23 12:41:37,195 INFO L87 Difference]: Start difference. First operand 136 states and 137 transitions. Second operand has 83 states, 83 states have (on average 3.3493975903614457) internal successors, (278), 83 states have internal predecessors, (278), 0 states have call successors, (0), 0 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 12:41:38,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:41:38,530 INFO L93 Difference]: Finished difference Result 207 states and 209 transitions. [2021-11-23 12:41:38,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-23 12:41:38,530 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 3.3493975903614457) internal successors, (278), 83 states have internal predecessors, (278), 0 states have call successors, (0), 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 135 [2021-11-23 12:41:38,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:41:38,531 INFO L225 Difference]: With dead ends: 207 [2021-11-23 12:41:38,531 INFO L226 Difference]: Without dead ends: 205 [2021-11-23 12:41:38,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 220 SyntacticMatches, 8 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2260 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=426, Invalid=7056, Unknown=0, NotChecked=0, Total=7482 [2021-11-23 12:41:38,534 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 213 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 2276 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1959 SdHoareTripleChecker+Invalid, 2701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 2276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 375 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:41:38,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 1959 Invalid, 2701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 2276 Invalid, 0 Unknown, 375 Unchecked, 1.0s Time] [2021-11-23 12:41:38,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2021-11-23 12:41:38,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 145. [2021-11-23 12:41:38,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.0208333333333333) internal successors, (147), 144 states have internal predecessors, (147), 0 states have call successors, (0), 0 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 12:41:38,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 147 transitions. [2021-11-23 12:41:38,589 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 147 transitions. Word has length 135 [2021-11-23 12:41:38,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:41:38,589 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 147 transitions. [2021-11-23 12:41:38,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 3.3493975903614457) internal successors, (278), 83 states have internal predecessors, (278), 0 states have call successors, (0), 0 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 12:41:38,589 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 147 transitions. [2021-11-23 12:41:38,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-23 12:41:38,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:41:38,590 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:41:38,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2021-11-23 12:41:38,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2021-11-23 12:41:38,791 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:41:38,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:41:38,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1631316823, now seen corresponding path program 45 times [2021-11-23 12:41:38,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:41:38,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724854465] [2021-11-23 12:41:38,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:41:38,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:41:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:41:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 451 proven. 557 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:41:39,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:41:39,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724854465] [2021-11-23 12:41:39,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724854465] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:41:39,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216197788] [2021-11-23 12:41:39,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 12:41:39,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:41:39,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:41:39,331 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:41:39,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2021-11-23 12:41:40,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2021-11-23 12:41:40,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:41:40,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 36 conjunts are in the unsatisfiable core [2021-11-23 12:41:40,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:41:41,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 512 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:41:41,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:41:41,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1008 backedges. 512 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:41:41,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216197788] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:41:41,633 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:41:41,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 56 [2021-11-23 12:41:41,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003749873] [2021-11-23 12:41:41,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:41:41,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2021-11-23 12:41:41,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:41:41,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2021-11-23 12:41:41,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=2355, Unknown=0, NotChecked=0, Total=3080 [2021-11-23 12:41:41,635 INFO L87 Difference]: Start difference. First operand 145 states and 147 transitions. Second operand has 56 states, 56 states have (on average 3.8392857142857144) internal successors, (215), 56 states have internal predecessors, (215), 0 states have call successors, (0), 0 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 12:41:42,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:41:42,163 INFO L93 Difference]: Finished difference Result 229 states and 231 transitions. [2021-11-23 12:41:42,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-23 12:41:42,164 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 3.8392857142857144) internal successors, (215), 56 states have internal predecessors, (215), 0 states have call successors, (0), 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 139 [2021-11-23 12:41:42,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:41:42,165 INFO L225 Difference]: With dead ends: 229 [2021-11-23 12:41:42,165 INFO L226 Difference]: Without dead ends: 157 [2021-11-23 12:41:42,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1235, Invalid=4021, Unknown=0, NotChecked=0, Total=5256 [2021-11-23 12:41:42,166 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 488 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:41:42,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [488 Valid, 277 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:41:42,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-11-23 12:41:42,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 140. [2021-11-23 12:41:42,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.014388489208633) internal successors, (141), 139 states have internal predecessors, (141), 0 states have call successors, (0), 0 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 12:41:42,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 141 transitions. [2021-11-23 12:41:42,220 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 141 transitions. Word has length 139 [2021-11-23 12:41:42,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:41:42,221 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 141 transitions. [2021-11-23 12:41:42,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 3.8392857142857144) internal successors, (215), 56 states have internal predecessors, (215), 0 states have call successors, (0), 0 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 12:41:42,221 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 141 transitions. [2021-11-23 12:41:42,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-23 12:41:42,222 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:41:42,222 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:41:42,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2021-11-23 12:41:42,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:41:42,438 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:41:42,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:41:42,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1751721004, now seen corresponding path program 46 times [2021-11-23 12:41:42,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:41:42,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804731908] [2021-11-23 12:41:42,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:41:42,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:41:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:41:43,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1011 backedges. 0 proven. 1011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:41:43,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:41:43,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804731908] [2021-11-23 12:41:43,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804731908] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:41:43,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262062914] [2021-11-23 12:41:43,851 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 12:41:43,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:41:43,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:41:43,852 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:41:43,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2021-11-23 12:41:44,028 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 12:41:44,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:41:44,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 81 conjunts are in the unsatisfiable core [2021-11-23 12:41:44,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:41:44,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:41:45,061 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-11-23 12:41:45,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 56 [2021-11-23 12:41:46,804 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:41:46,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2021-11-23 12:41:46,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1011 backedges. 0 proven. 1011 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:41:46,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:41:59,233 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_1638| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 18 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1638| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_1638|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 64)))) (< |v_ULTIMATE.start_main_~i~0#1_1638| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-23 12:41:59,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-11-23 12:41:59,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 92 [2021-11-23 12:42:00,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1011 backedges. 0 proven. 995 refuted. 0 times theorem prover too weak. 0 trivial. 16 not checked. [2021-11-23 12:42:00,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262062914] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:42:00,561 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:42:00,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 42] total 89 [2021-11-23 12:42:00,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670845386] [2021-11-23 12:42:00,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:42:00,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 89 states [2021-11-23 12:42:00,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:42:00,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2021-11-23 12:42:00,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=7218, Unknown=5, NotChecked=172, Total=7832 [2021-11-23 12:42:00,563 INFO L87 Difference]: Start difference. First operand 140 states and 141 transitions. Second operand has 89 states, 89 states have (on average 3.247191011235955) internal successors, (289), 89 states have internal predecessors, (289), 0 states have call successors, (0), 0 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 12:42:04,118 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse1 (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_1638| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 18 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1638| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_1638|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 64)))) (< |v_ULTIMATE.start_main_~i~0#1_1638| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (<= |c_ULTIMATE.start_main_~i~0#1| 16) .cse0 (< .cse1 .cse2) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) (<= 17 .cse1) .cse3 (or (and .cse4 (< 0 |c_ULTIMATE.start_main_~j~0#1|) .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) (<= 16 |c_ULTIMATE.start_main_~i~0#1|) .cse5)) is different from false [2021-11-23 12:42:04,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:42:04,221 INFO L93 Difference]: Finished difference Result 211 states and 213 transitions. [2021-11-23 12:42:04,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-23 12:42:04,222 INFO L78 Accepts]: Start accepts. Automaton has has 89 states, 89 states have (on average 3.247191011235955) internal successors, (289), 89 states have internal predecessors, (289), 0 states have call successors, (0), 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 139 [2021-11-23 12:42:04,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:42:04,223 INFO L225 Difference]: With dead ends: 211 [2021-11-23 12:42:04,223 INFO L226 Difference]: Without dead ends: 209 [2021-11-23 12:42:04,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 224 SyntacticMatches, 8 SemanticMatches, 91 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2710 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=473, Invalid=7719, Unknown=6, NotChecked=358, Total=8556 [2021-11-23 12:42:04,224 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 171 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 2476 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 2874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 363 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:42:04,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 1753 Invalid, 2874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2476 Invalid, 0 Unknown, 363 Unchecked, 1.4s Time] [2021-11-23 12:42:04,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-23 12:42:04,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 149. [2021-11-23 12:42:04,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.0202702702702702) internal successors, (151), 148 states have internal predecessors, (151), 0 states have call successors, (0), 0 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 12:42:04,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 151 transitions. [2021-11-23 12:42:04,289 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 151 transitions. Word has length 139 [2021-11-23 12:42:04,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:42:04,289 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 151 transitions. [2021-11-23 12:42:04,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 89 states, 89 states have (on average 3.247191011235955) internal successors, (289), 89 states have internal predecessors, (289), 0 states have call successors, (0), 0 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 12:42:04,289 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 151 transitions. [2021-11-23 12:42:04,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-23 12:42:04,290 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:42:04,290 INFO L514 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:42:04,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2021-11-23 12:42:04,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2021-11-23 12:42:04,497 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:42:04,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:42:04,497 INFO L85 PathProgramCache]: Analyzing trace with hash 311195362, now seen corresponding path program 47 times [2021-11-23 12:42:04,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:42:04,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602385825] [2021-11-23 12:42:04,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:42:04,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:42:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:42:06,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 0 proven. 1073 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:06,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:42:06,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602385825] [2021-11-23 12:42:06,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602385825] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:42:06,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850553753] [2021-11-23 12:42:06,051 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-23 12:42:06,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:42:06,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:42:06,052 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:42:06,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2021-11-23 12:42:06,430 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-11-23 12:42:06,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:42:06,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 83 conjunts are in the unsatisfiable core [2021-11-23 12:42:06,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:42:08,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-23 12:42:09,761 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-23 12:42:09,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 0 proven. 1073 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:09,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:42:10,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2021-11-23 12:42:10,211 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-23 12:42:10,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1073 backedges. 0 proven. 1073 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:10,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850553753] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:42:10,817 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:42:10,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 42, 42] total 85 [2021-11-23 12:42:10,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614642706] [2021-11-23 12:42:10,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:42:10,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2021-11-23 12:42:10,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:42:10,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2021-11-23 12:42:10,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=6790, Unknown=0, NotChecked=0, Total=7140 [2021-11-23 12:42:10,819 INFO L87 Difference]: Start difference. First operand 149 states and 151 transitions. Second operand has 85 states, 85 states have (on average 3.4352941176470586) internal successors, (292), 85 states have internal predecessors, (292), 0 states have call successors, (0), 0 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 12:42:16,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:42:16,756 INFO L93 Difference]: Finished difference Result 238 states and 240 transitions. [2021-11-23 12:42:16,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-11-23 12:42:16,757 INFO L78 Accepts]: Start accepts. Automaton has has 85 states, 85 states have (on average 3.4352941176470586) internal successors, (292), 85 states have internal predecessors, (292), 0 states have call successors, (0), 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 143 [2021-11-23 12:42:16,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:42:16,759 INFO L225 Difference]: With dead ends: 238 [2021-11-23 12:42:16,759 INFO L226 Difference]: Without dead ends: 236 [2021-11-23 12:42:16,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 241 SyntacticMatches, 3 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5785 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=1212, Invalid=19668, Unknown=0, NotChecked=0, Total=20880 [2021-11-23 12:42:16,761 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 362 mSDsluCounter, 3179 mSDsCounter, 0 mSdLazyCounter, 5420 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 3243 SdHoareTripleChecker+Invalid, 5728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 5420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-23 12:42:16,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 3243 Invalid, 5728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 5420 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-23 12:42:16,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-11-23 12:42:16,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 153. [2021-11-23 12:42:16,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.019736842105263) internal successors, (155), 152 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 12:42:16,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2021-11-23 12:42:16,812 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 143 [2021-11-23 12:42:16,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:42:16,812 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2021-11-23 12:42:16,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 3.4352941176470586) internal successors, (292), 85 states have internal predecessors, (292), 0 states have call successors, (0), 0 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 12:42:16,812 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2021-11-23 12:42:16,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-23 12:42:16,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:42:16,814 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:42:16,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2021-11-23 12:42:17,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:42:17,018 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:42:17,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:42:17,018 INFO L85 PathProgramCache]: Analyzing trace with hash -600734107, now seen corresponding path program 48 times [2021-11-23 12:42:17,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:42:17,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474695621] [2021-11-23 12:42:17,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:42:17,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:42:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:42:18,604 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 1080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:18,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:42:18,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474695621] [2021-11-23 12:42:18,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474695621] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:42:18,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986516720] [2021-11-23 12:42:18,605 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-23 12:42:18,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:42:18,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:42:18,608 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:42:18,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2021-11-23 12:42:19,824 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-11-23 12:42:19,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:42:19,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 83 conjunts are in the unsatisfiable core [2021-11-23 12:42:19,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:42:20,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:42:20,988 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-11-23 12:42:20,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 53 [2021-11-23 12:42:21,198 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-11-23 12:42:21,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 56 [2021-11-23 12:42:23,422 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:42:23,422 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2021-11-23 12:42:23,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 3 proven. 1077 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:23,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:42:25,803 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 18 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 64)))) is different from false [2021-11-23 12:42:27,823 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_1771| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_1771| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 18 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1771| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_1771|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 64)))))) is different from false [2021-11-23 12:42:29,844 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~k~0#1| Int) (|v_ULTIMATE.start_main_~k~0#1_472| Int) (|v_ULTIMATE.start_main_~i~0#1_1771| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_1771| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (<= 18 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1771| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~k~0#1_472| |v_ULTIMATE.start_main_~i~0#1_1771|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 64))))) is different from false [2021-11-23 12:42:31,896 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_1772| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_1772| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int) (|v_ULTIMATE.start_main_~k~0#1_472| Int) (|v_ULTIMATE.start_main_~i~0#1_1771| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_1771| (+ |v_ULTIMATE.start_main_~i~0#1_1772| 1)) (<= 18 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1772| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_1772|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1771| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~k~0#1_472| |v_ULTIMATE.start_main_~i~0#1_1771|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 64))))))) is different from false [2021-11-23 12:42:31,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 48 [2021-11-23 12:42:31,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 888 treesize of output 872 [2021-11-23 12:42:33,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1080 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 134 not checked. [2021-11-23 12:42:33,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986516720] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:42:33,756 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:42:33,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 43, 44] total 93 [2021-11-23 12:42:33,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475859166] [2021-11-23 12:42:33,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:42:33,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 93 states [2021-11-23 12:42:33,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:42:33,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2021-11-23 12:42:33,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=445, Invalid=7399, Unknown=4, NotChecked=708, Total=8556 [2021-11-23 12:42:33,760 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand has 93 states, 93 states have (on average 3.236559139784946) internal successors, (301), 93 states have internal predecessors, (301), 0 states have call successors, (0), 0 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 12:42:37,310 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse1 (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and (<= |c_ULTIMATE.start_main_~i~0#1| 16) .cse0 (forall ((|v_ULTIMATE.start_main_~i~0#1_1772| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_1772| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int) (|v_ULTIMATE.start_main_~k~0#1_472| Int) (|v_ULTIMATE.start_main_~i~0#1_1771| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_1771| (+ |v_ULTIMATE.start_main_~i~0#1_1772| 1)) (<= 18 (select (store (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1772| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_1772|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1771| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~k~0#1_472| |v_ULTIMATE.start_main_~i~0#1_1771|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 64))))))) (< .cse1 .cse2) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) (<= 17 .cse1) .cse3 (or (and .cse4 (< 0 |c_ULTIMATE.start_main_~j~0#1|) .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) (<= 16 |c_ULTIMATE.start_main_~i~0#1|) .cse5)) is different from false [2021-11-23 12:42:39,431 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((|v_ULTIMATE.start_main_~i~0#1_1737| Int)) (let ((.cse0 (+ |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~i~0#1_1737|)) (.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1737| 4))))) (and (<= |v_ULTIMATE.start_main_~i~0#1_1737| 16) (<= 17 .cse0) (< .cse1 (+ 10000 |c_ULTIMATE.start_main_~j~0#1| |v_ULTIMATE.start_main_~i~0#1_1737|)) (< .cse0 .cse1) (<= (+ |v_ULTIMATE.start_main_~i~0#1_1737| 1) |c_ULTIMATE.start_main_~i~0#1|) (<= 16 |v_ULTIMATE.start_main_~i~0#1_1737|)))) (forall ((|v_ULTIMATE.start_main_~i~0#1_1771| Int)) (or (< |v_ULTIMATE.start_main_~i~0#1_1771| (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 18 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1771| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_1771|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 64)))))) (< |c_ULTIMATE.start_main_~j~0#1| 10000)) is different from false [2021-11-23 12:42:39,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:42:39,663 INFO L93 Difference]: Finished difference Result 222 states and 224 transitions. [2021-11-23 12:42:39,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-23 12:42:39,663 INFO L78 Accepts]: Start accepts. Automaton has has 93 states, 93 states have (on average 3.236559139784946) internal successors, (301), 93 states have internal predecessors, (301), 0 states have call successors, (0), 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 143 [2021-11-23 12:42:39,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:42:39,665 INFO L225 Difference]: With dead ends: 222 [2021-11-23 12:42:39,665 INFO L226 Difference]: Without dead ends: 220 [2021-11-23 12:42:39,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 234 SyntacticMatches, 9 SemanticMatches, 98 ConstructedPredicates, 6 IntricatePredicates, 2 DeprecatedPredicates, 2880 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=512, Invalid=8248, Unknown=6, NotChecked=1134, Total=9900 [2021-11-23 12:42:39,666 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 174 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 612 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:42:39,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 1894 Invalid, 3152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2505 Invalid, 0 Unknown, 612 Unchecked, 1.4s Time] [2021-11-23 12:42:39,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-11-23 12:42:39,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 153. [2021-11-23 12:42:39,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.019736842105263) internal successors, (155), 152 states have internal predecessors, (155), 0 states have call successors, (0), 0 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 12:42:39,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 155 transitions. [2021-11-23 12:42:39,744 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 155 transitions. Word has length 143 [2021-11-23 12:42:39,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:42:39,745 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 155 transitions. [2021-11-23 12:42:39,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 93 states, 93 states have (on average 3.236559139784946) internal successors, (301), 93 states have internal predecessors, (301), 0 states have call successors, (0), 0 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 12:42:39,745 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 155 transitions. [2021-11-23 12:42:39,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-23 12:42:39,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:42:39,746 INFO L514 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:42:39,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2021-11-23 12:42:39,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:42:39,947 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:42:39,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:42:39,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2135196008, now seen corresponding path program 49 times [2021-11-23 12:42:39,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:42:39,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894777096] [2021-11-23 12:42:39,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:42:39,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:42:39,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:42:40,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 513 proven. 626 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:40,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:42:40,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894777096] [2021-11-23 12:42:40,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894777096] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:42:40,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293166373] [2021-11-23 12:42:40,646 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 12:42:40,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:42:40,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:42:40,648 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:42:40,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2021-11-23 12:42:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:42:40,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-23 12:42:40,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:42:41,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 578 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:41,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:42:42,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1139 backedges. 578 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:42,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293166373] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:42:42,346 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:42:42,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 59 [2021-11-23 12:42:42,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588592636] [2021-11-23 12:42:42,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:42:42,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-11-23 12:42:42,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:42:42,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-11-23 12:42:42,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=803, Invalid=2619, Unknown=0, NotChecked=0, Total=3422 [2021-11-23 12:42:42,348 INFO L87 Difference]: Start difference. First operand 153 states and 155 transitions. Second operand has 59 states, 59 states have (on average 3.847457627118644) internal successors, (227), 59 states have internal predecessors, (227), 0 states have call successors, (0), 0 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 12:42:42,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:42:42,968 INFO L93 Difference]: Finished difference Result 241 states and 243 transitions. [2021-11-23 12:42:42,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-11-23 12:42:42,969 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.847457627118644) internal successors, (227), 59 states have internal predecessors, (227), 0 states have call successors, (0), 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 147 [2021-11-23 12:42:42,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:42:42,970 INFO L225 Difference]: With dead ends: 241 [2021-11-23 12:42:42,970 INFO L226 Difference]: Without dead ends: 165 [2021-11-23 12:42:42,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1467 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1370, Invalid=4482, Unknown=0, NotChecked=0, Total=5852 [2021-11-23 12:42:42,971 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 374 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:42:42,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [374 Valid, 345 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:42:42,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-23 12:42:43,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 148. [2021-11-23 12:42:43,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.0136054421768708) internal successors, (149), 147 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 12:42:43,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 149 transitions. [2021-11-23 12:42:43,038 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 149 transitions. Word has length 147 [2021-11-23 12:42:43,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:42:43,038 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 149 transitions. [2021-11-23 12:42:43,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.847457627118644) internal successors, (227), 59 states have internal predecessors, (227), 0 states have call successors, (0), 0 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 12:42:43,038 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 149 transitions. [2021-11-23 12:42:43,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-23 12:42:43,039 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:42:43,039 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:42:43,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2021-11-23 12:42:43,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:42:43,242 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:42:43,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:42:43,242 INFO L85 PathProgramCache]: Analyzing trace with hash -898165605, now seen corresponding path program 50 times [2021-11-23 12:42:43,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:42:43,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609787295] [2021-11-23 12:42:43,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:42:43,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:42:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:42:44,833 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 0 proven. 1142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:44,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:42:44,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609787295] [2021-11-23 12:42:44,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609787295] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:42:44,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092246682] [2021-11-23 12:42:44,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:42:44,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:42:44,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:42:44,835 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:42:44,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2021-11-23 12:42:44,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:42:44,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:42:44,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 85 conjunts are in the unsatisfiable core [2021-11-23 12:42:44,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:42:46,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:42:46,979 INFO L354 Elim1Store]: treesize reduction 34, result has 20.9 percent of original size [2021-11-23 12:42:46,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2021-11-23 12:42:48,613 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-23 12:42:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 0 proven. 1142 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:42:48,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:42:59,372 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_1910| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 19 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1910| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_1910|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 68)))) (< |v_ULTIMATE.start_main_~i~0#1_1910| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-23 12:42:59,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-11-23 12:42:59,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 201 [2021-11-23 12:43:00,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 0 proven. 1125 refuted. 0 times theorem prover too weak. 0 trivial. 17 not checked. [2021-11-23 12:43:00,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092246682] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:43:00,028 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:43:00,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 44, 44] total 91 [2021-11-23 12:43:00,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640740597] [2021-11-23 12:43:00,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:43:00,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 91 states [2021-11-23 12:43:00,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:43:00,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2021-11-23 12:43:00,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=7573, Unknown=4, NotChecked=176, Total=8190 [2021-11-23 12:43:00,031 INFO L87 Difference]: Start difference. First operand 148 states and 149 transitions. Second operand has 91 states, 91 states have (on average 3.32967032967033) internal successors, (303), 91 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:43:03,653 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse1 (< 0 |c_ULTIMATE.start_main_~j~0#1|)) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and (= |c_ULTIMATE.start_main_~i~0#1| 17) .cse0 .cse1 (< (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|) .cse2) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) .cse3 (forall ((|v_ULTIMATE.start_main_~i~0#1_1910| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 19 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_1910| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_1910|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 68)))) (< |v_ULTIMATE.start_main_~i~0#1_1910| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (or (and .cse4 .cse1 .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) .cse5)) is different from false [2021-11-23 12:43:06,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:43:06,479 INFO L93 Difference]: Finished difference Result 162 states and 163 transitions. [2021-11-23 12:43:06,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-11-23 12:43:06,480 INFO L78 Accepts]: Start accepts. Automaton has has 91 states, 91 states have (on average 3.32967032967033) internal successors, (303), 91 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 147 [2021-11-23 12:43:06,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:43:06,481 INFO L225 Difference]: With dead ends: 162 [2021-11-23 12:43:06,481 INFO L226 Difference]: Without dead ends: 160 [2021-11-23 12:43:06,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 245 SyntacticMatches, 3 SemanticMatches, 132 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4676 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=1139, Invalid=16156, Unknown=5, NotChecked=522, Total=17822 [2021-11-23 12:43:06,484 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 312 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 5162 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 2815 SdHoareTripleChecker+Invalid, 5623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 5162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 210 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-23 12:43:06,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 2815 Invalid, 5623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 5162 Invalid, 0 Unknown, 210 Unchecked, 2.7s Time] [2021-11-23 12:43:06,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-11-23 12:43:06,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2021-11-23 12:43:06,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.0132450331125828) internal successors, (153), 151 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:43:06,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 153 transitions. [2021-11-23 12:43:06,537 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 153 transitions. Word has length 147 [2021-11-23 12:43:06,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:43:06,537 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 153 transitions. [2021-11-23 12:43:06,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 91 states, 91 states have (on average 3.32967032967033) internal successors, (303), 91 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:43:06,537 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 153 transitions. [2021-11-23 12:43:06,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 12:43:06,538 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:43:06,538 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:43:06,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2021-11-23 12:43:06,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2021-11-23 12:43:06,739 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:43:06,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:43:06,739 INFO L85 PathProgramCache]: Analyzing trace with hash -499214383, now seen corresponding path program 51 times [2021-11-23 12:43:06,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:43:06,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229358400] [2021-11-23 12:43:06,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:43:06,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:43:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:43:08,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 0 proven. 1208 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:43:08,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:43:08,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229358400] [2021-11-23 12:43:08,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229358400] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:43:08,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504769175] [2021-11-23 12:43:08,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 12:43:08,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:43:08,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:43:08,328 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:43:08,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2021-11-23 12:43:09,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 19 check-sat command(s) [2021-11-23 12:43:09,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:43:09,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-23 12:43:09,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:43:11,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 27 [2021-11-23 12:43:14,500 INFO L354 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2021-11-23 12:43:14,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 50 [2021-11-23 12:43:14,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 561 proven. 647 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:43:14,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:43:17,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 30 [2021-11-23 12:43:17,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 47 [2021-11-23 12:43:20,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 544 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:43:20,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504769175] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:43:20,071 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:43:20,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 46, 46] total 131 [2021-11-23 12:43:20,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198601391] [2021-11-23 12:43:20,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:43:20,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 131 states [2021-11-23 12:43:20,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:43:20,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 131 interpolants. [2021-11-23 12:43:20,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2004, Invalid=15026, Unknown=0, NotChecked=0, Total=17030 [2021-11-23 12:43:20,073 INFO L87 Difference]: Start difference. First operand 152 states and 153 transitions. Second operand has 131 states, 131 states have (on average 3.3893129770992365) internal successors, (444), 131 states have internal predecessors, (444), 0 states have call successors, (0), 0 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 12:43:31,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:43:31,617 INFO L93 Difference]: Finished difference Result 232 states and 234 transitions. [2021-11-23 12:43:31,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 115 states. [2021-11-23 12:43:31,618 INFO L78 Accepts]: Start accepts. Automaton has has 131 states, 131 states have (on average 3.3893129770992365) internal successors, (444), 131 states have internal predecessors, (444), 0 states have call successors, (0), 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 151 [2021-11-23 12:43:31,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:43:31,619 INFO L225 Difference]: With dead ends: 232 [2021-11-23 12:43:31,619 INFO L226 Difference]: Without dead ends: 156 [2021-11-23 12:43:31,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 476 GetRequests, 235 SyntacticMatches, 2 SemanticMatches, 239 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17223 ImplicationChecksByTransitivity, 18.4s TimeCoverageRelationStatistics Valid=5563, Invalid=52277, Unknown=0, NotChecked=0, Total=57840 [2021-11-23 12:43:31,622 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 268 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 573 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:43:31,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [268 Valid, 1424 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 2133 Invalid, 0 Unknown, 573 Unchecked, 1.2s Time] [2021-11-23 12:43:31,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-11-23 12:43:31,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2021-11-23 12:43:31,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 1.0129032258064516) internal successors, (157), 155 states have internal predecessors, (157), 0 states have call successors, (0), 0 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 12:43:31,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 157 transitions. [2021-11-23 12:43:31,694 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 157 transitions. Word has length 151 [2021-11-23 12:43:31,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:43:31,694 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 157 transitions. [2021-11-23 12:43:31,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 131 states, 131 states have (on average 3.3893129770992365) internal successors, (444), 131 states have internal predecessors, (444), 0 states have call successors, (0), 0 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 12:43:31,695 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 157 transitions. [2021-11-23 12:43:31,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-23 12:43:31,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:43:31,695 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 18, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:43:31,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2021-11-23 12:43:31,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2021-11-23 12:43:31,898 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:43:31,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:43:31,898 INFO L85 PathProgramCache]: Analyzing trace with hash 766536842, now seen corresponding path program 52 times [2021-11-23 12:43:31,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:43:31,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591289949] [2021-11-23 12:43:31,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:43:31,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:43:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:43:33,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 0 proven. 1281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:43:33,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:43:33,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591289949] [2021-11-23 12:43:33,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591289949] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:43:33,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53159965] [2021-11-23 12:43:33,316 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 12:43:33,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:43:33,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:43:33,318 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:43:33,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2021-11-23 12:43:33,683 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 12:43:33,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:43:33,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 89 conjunts are in the unsatisfiable core [2021-11-23 12:43:33,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:43:35,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:43:35,917 INFO L354 Elim1Store]: treesize reduction 34, result has 20.9 percent of original size [2021-11-23 12:43:35,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2021-11-23 12:43:37,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-23 12:43:37,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 0 proven. 1281 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:43:37,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:44:06,413 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_2054| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 20 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_2054| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_2054|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 72)))) (< |v_ULTIMATE.start_main_~i~0#1_2054| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-23 12:44:06,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-11-23 12:44:06,421 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 92 [2021-11-23 12:44:07,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1281 backedges. 0 proven. 1263 refuted. 0 times theorem prover too weak. 0 trivial. 18 not checked. [2021-11-23 12:44:07,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53159965] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:44:07,083 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:44:07,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 96 [2021-11-23 12:44:07,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848481996] [2021-11-23 12:44:07,084 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:44:07,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-11-23 12:44:07,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:07,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-11-23 12:44:07,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=8458, Unknown=13, NotChecked=186, Total=9120 [2021-11-23 12:44:07,086 INFO L87 Difference]: Start difference. First operand 156 states and 157 transitions. Second operand has 96 states, 96 states have (on average 3.3229166666666665) internal successors, (319), 96 states have internal predecessors, (319), 0 states have call successors, (0), 0 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 12:44:10,775 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse1 (< 0 |c_ULTIMATE.start_main_~j~0#1|)) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and .cse0 .cse1 (< (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|) .cse2) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) .cse3 (or (and .cse4 .cse1 .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (= |c_ULTIMATE.start_main_~i~0#1| 18) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) .cse5 (forall ((|v_ULTIMATE.start_main_~i~0#1_2054| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 20 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_2054| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_2054|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 72)))) (< |v_ULTIMATE.start_main_~i~0#1_2054| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))))) is different from false [2021-11-23 12:44:13,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:13,687 INFO L93 Difference]: Finished difference Result 170 states and 171 transitions. [2021-11-23 12:44:13,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2021-11-23 12:44:13,688 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 3.3229166666666665) internal successors, (319), 96 states have internal predecessors, (319), 0 states have call successors, (0), 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 155 [2021-11-23 12:44:13,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:13,689 INFO L225 Difference]: With dead ends: 170 [2021-11-23 12:44:13,689 INFO L226 Difference]: Without dead ends: 168 [2021-11-23 12:44:13,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 275 SyntacticMatches, 3 SemanticMatches, 139 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 5173 ImplicationChecksByTransitivity, 36.3s TimeCoverageRelationStatistics Valid=1196, Invalid=17980, Unknown=14, NotChecked=550, Total=19740 [2021-11-23 12:44:13,690 INFO L933 BasicCegarLoop]: 61 mSDtfsCounter, 413 mSDsluCounter, 3067 mSDsCounter, 0 mSdLazyCounter, 4980 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 5516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 4980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 256 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:13,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [413 Valid, 3128 Invalid, 5516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 4980 Invalid, 0 Unknown, 256 Unchecked, 2.6s Time] [2021-11-23 12:44:13,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-11-23 12:44:13,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 160. [2021-11-23 12:44:13,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 1.0125786163522013) internal successors, (161), 159 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 12:44:13,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 161 transitions. [2021-11-23 12:44:13,734 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 161 transitions. Word has length 155 [2021-11-23 12:44:13,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:13,734 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 161 transitions. [2021-11-23 12:44:13,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 3.3229166666666665) internal successors, (319), 96 states have internal predecessors, (319), 0 states have call successors, (0), 0 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 12:44:13,734 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 161 transitions. [2021-11-23 12:44:13,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-11-23 12:44:13,735 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:13,736 INFO L514 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:13,764 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:13,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:44:13,954 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:13,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:13,954 INFO L85 PathProgramCache]: Analyzing trace with hash -669228992, now seen corresponding path program 53 times [2021-11-23 12:44:13,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:13,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93261163] [2021-11-23 12:44:13,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:13,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:15,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1351 backedges. 0 proven. 1351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:15,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:15,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93261163] [2021-11-23 12:44:15,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93261163] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:44:15,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105403805] [2021-11-23 12:44:15,508 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-23 12:44:15,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:44:15,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:15,509 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:44:15,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2021-11-23 12:44:16,001 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2021-11-23 12:44:16,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:44:16,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 91 conjunts are in the unsatisfiable core [2021-11-23 12:44:16,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:17,157 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 35 [2021-11-23 12:44:19,788 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:44:19,788 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2021-11-23 12:44:19,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1351 backedges. 0 proven. 1351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:19,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:44:20,196 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2021-11-23 12:44:20,198 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-23 12:44:22,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1351 backedges. 0 proven. 1351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:22,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105403805] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:44:22,170 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:44:22,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 46, 46] total 95 [2021-11-23 12:44:22,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415690876] [2021-11-23 12:44:22,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:44:22,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 95 states [2021-11-23 12:44:22,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:22,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2021-11-23 12:44:22,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=8505, Unknown=0, NotChecked=0, Total=8930 [2021-11-23 12:44:22,173 INFO L87 Difference]: Start difference. First operand 160 states and 161 transitions. Second operand has 95 states, 95 states have (on average 3.431578947368421) internal successors, (326), 95 states have internal predecessors, (326), 0 states have call successors, (0), 0 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 12:44:24,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:24,943 INFO L93 Difference]: Finished difference Result 244 states and 246 transitions. [2021-11-23 12:44:24,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-11-23 12:44:24,943 INFO L78 Accepts]: Start accepts. Automaton has has 95 states, 95 states have (on average 3.431578947368421) internal successors, (326), 95 states have internal predecessors, (326), 0 states have call successors, (0), 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 159 [2021-11-23 12:44:24,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:24,945 INFO L225 Difference]: With dead ends: 244 [2021-11-23 12:44:24,945 INFO L226 Difference]: Without dead ends: 242 [2021-11-23 12:44:24,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 275 SyntacticMatches, 10 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3877 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=600, Invalid=12740, Unknown=0, NotChecked=0, Total=13340 [2021-11-23 12:44:24,946 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 167 mSDsluCounter, 2313 mSDsCounter, 0 mSdLazyCounter, 2819 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 2381 SdHoareTripleChecker+Invalid, 3489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 629 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:24,946 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 2381 Invalid, 3489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2819 Invalid, 0 Unknown, 629 Unchecked, 1.5s Time] [2021-11-23 12:44:24,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-23 12:44:25,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 169. [2021-11-23 12:44:25,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.0178571428571428) internal successors, (171), 168 states have internal predecessors, (171), 0 states have call successors, (0), 0 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 12:44:25,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 171 transitions. [2021-11-23 12:44:25,034 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 171 transitions. Word has length 159 [2021-11-23 12:44:25,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:25,035 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 171 transitions. [2021-11-23 12:44:25,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 95 states, 95 states have (on average 3.431578947368421) internal successors, (326), 95 states have internal predecessors, (326), 0 states have call successors, (0), 0 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 12:44:25,035 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 171 transitions. [2021-11-23 12:44:25,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-23 12:44:25,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:25,036 INFO L514 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:25,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:25,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:44:25,242 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:25,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:25,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1084520202, now seen corresponding path program 54 times [2021-11-23 12:44:25,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:25,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297825022] [2021-11-23 12:44:25,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:25,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:26,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1425 backedges. 649 proven. 776 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:26,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:26,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297825022] [2021-11-23 12:44:26,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297825022] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:44:26,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863495015] [2021-11-23 12:44:26,030 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-23 12:44:26,030 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:44:26,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:26,031 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:44:26,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2021-11-23 12:44:27,329 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2021-11-23 12:44:27,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:44:27,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-23 12:44:27,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:28,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1425 backedges. 722 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:28,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:44:28,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1425 backedges. 722 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:28,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863495015] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:44:28,902 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:44:28,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 65 [2021-11-23 12:44:28,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470238709] [2021-11-23 12:44:28,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:44:28,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-11-23 12:44:28,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:28,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-11-23 12:44:28,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=971, Invalid=3189, Unknown=0, NotChecked=0, Total=4160 [2021-11-23 12:44:28,904 INFO L87 Difference]: Start difference. First operand 169 states and 171 transitions. Second operand has 65 states, 65 states have (on average 3.8615384615384616) internal successors, (251), 65 states have internal predecessors, (251), 0 states have call successors, (0), 0 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 12:44:29,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:29,623 INFO L93 Difference]: Finished difference Result 265 states and 267 transitions. [2021-11-23 12:44:29,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-23 12:44:29,623 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 3.8615384615384616) internal successors, (251), 65 states have internal predecessors, (251), 0 states have call successors, (0), 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 163 [2021-11-23 12:44:29,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:29,624 INFO L225 Difference]: With dead ends: 265 [2021-11-23 12:44:29,625 INFO L226 Difference]: Without dead ends: 181 [2021-11-23 12:44:29,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1791 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1661, Invalid=5479, Unknown=0, NotChecked=0, Total=7140 [2021-11-23 12:44:29,626 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 440 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:29,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 417 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:44:29,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-23 12:44:29,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 164. [2021-11-23 12:44:29,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.0122699386503067) internal successors, (165), 163 states have internal predecessors, (165), 0 states have call successors, (0), 0 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 12:44:29,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 165 transitions. [2021-11-23 12:44:29,692 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 165 transitions. Word has length 163 [2021-11-23 12:44:29,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:29,692 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 165 transitions. [2021-11-23 12:44:29,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 3.8615384615384616) internal successors, (251), 65 states have internal predecessors, (251), 0 states have call successors, (0), 0 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 12:44:29,693 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 165 transitions. [2021-11-23 12:44:29,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-23 12:44:29,694 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:29,694 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:29,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Ended with exit code 0 [2021-11-23 12:44:29,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:44:29,910 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:29,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:29,910 INFO L85 PathProgramCache]: Analyzing trace with hash -202478599, now seen corresponding path program 55 times [2021-11-23 12:44:29,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:29,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171704050] [2021-11-23 12:44:29,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:29,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:31,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:31,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:31,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171704050] [2021-11-23 12:44:31,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171704050] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:44:31,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070987481] [2021-11-23 12:44:31,725 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-23 12:44:31,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:44:31,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:31,726 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:44:31,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2021-11-23 12:44:31,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:31,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 93 conjunts are in the unsatisfiable core [2021-11-23 12:44:31,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:33,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:44:34,221 INFO L354 Elim1Store]: treesize reduction 34, result has 20.9 percent of original size [2021-11-23 12:44:34,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2021-11-23 12:44:36,257 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-23 12:44:36,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1428 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:36,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:44:38,683 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 21 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 76)))) is different from false [2021-11-23 12:44:40,703 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_2284| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 21 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_2284| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_2284|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 76)))) (< |v_ULTIMATE.start_main_~i~0#1_2284| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-23 12:44:40,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-11-23 12:44:40,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 201 [2021-11-23 12:44:41,559 INFO L134 CoverageAnalysis]: Checked inductivity of 1428 backedges. 0 proven. 1351 refuted. 0 times theorem prover too weak. 0 trivial. 77 not checked. [2021-11-23 12:44:41,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070987481] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:44:41,559 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:44:41,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 48] total 100 [2021-11-23 12:44:41,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259426005] [2021-11-23 12:44:41,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:44:41,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 100 states [2021-11-23 12:44:41,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:41,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants. [2021-11-23 12:44:41,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=9051, Unknown=2, NotChecked=386, Total=9900 [2021-11-23 12:44:41,561 INFO L87 Difference]: Start difference. First operand 164 states and 165 transitions. Second operand has 100 states, 100 states have (on average 3.35) internal successors, (335), 100 states have internal predecessors, (335), 0 states have call successors, (0), 0 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 12:44:45,589 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse1 (< 0 |c_ULTIMATE.start_main_~j~0#1|)) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and .cse0 .cse1 (forall ((|v_ULTIMATE.start_main_~i~0#1_2284| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 21 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_2284| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_2284|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 76)))) (< |v_ULTIMATE.start_main_~i~0#1_2284| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) (< (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|) .cse2) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) .cse3 (or (and .cse4 .cse1 .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (= 19 |c_ULTIMATE.start_main_~i~0#1|) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) .cse5)) is different from false [2021-11-23 12:44:49,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:44:49,324 INFO L93 Difference]: Finished difference Result 178 states and 179 transitions. [2021-11-23 12:44:49,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-11-23 12:44:49,324 INFO L78 Accepts]: Start accepts. Automaton has has 100 states, 100 states have (on average 3.35) internal successors, (335), 100 states have internal predecessors, (335), 0 states have call successors, (0), 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 163 [2021-11-23 12:44:49,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:44:49,325 INFO L225 Difference]: With dead ends: 178 [2021-11-23 12:44:49,325 INFO L226 Difference]: Without dead ends: 176 [2021-11-23 12:44:49,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 272 SyntacticMatches, 5 SemanticMatches, 145 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5632 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=1197, Invalid=19404, Unknown=3, NotChecked=858, Total=21462 [2021-11-23 12:44:49,327 INFO L933 BasicCegarLoop]: 64 mSDtfsCounter, 382 mSDsluCounter, 3621 mSDsCounter, 0 mSdLazyCounter, 6607 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 3685 SdHoareTripleChecker+Invalid, 7216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 6607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 330 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-23 12:44:49,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 3685 Invalid, 7216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 6607 Invalid, 0 Unknown, 330 Unchecked, 3.4s Time] [2021-11-23 12:44:49,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-11-23 12:44:49,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 168. [2021-11-23 12:44:49,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 1.0119760479041917) internal successors, (169), 167 states have internal predecessors, (169), 0 states have call successors, (0), 0 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 12:44:49,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 169 transitions. [2021-11-23 12:44:49,404 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 169 transitions. Word has length 163 [2021-11-23 12:44:49,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:44:49,404 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 169 transitions. [2021-11-23 12:44:49,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 100 states, 100 states have (on average 3.35) internal successors, (335), 100 states have internal predecessors, (335), 0 states have call successors, (0), 0 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 12:44:49,405 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 169 transitions. [2021-11-23 12:44:49,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-23 12:44:49,406 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:44:49,406 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:44:49,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2021-11-23 12:44:49,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2021-11-23 12:44:49,622 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:44:49,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:44:49,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1197412399, now seen corresponding path program 56 times [2021-11-23 12:44:49,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:44:49,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977535184] [2021-11-23 12:44:49,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:44:49,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:44:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:44:51,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1502 backedges. 0 proven. 1502 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:51,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:44:51,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977535184] [2021-11-23 12:44:51,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977535184] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:44:51,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913204849] [2021-11-23 12:44:51,199 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 12:44:51,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:44:51,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:44:51,200 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:44:51,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2021-11-23 12:44:51,324 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 12:44:51,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:44:51,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 95 conjunts are in the unsatisfiable core [2021-11-23 12:44:51,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:44:53,522 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2021-11-23 12:44:55,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 28 [2021-11-23 12:44:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 1502 backedges. 0 proven. 1502 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:55,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:44:56,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 17 [2021-11-23 12:44:56,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2021-11-23 12:44:56,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1502 backedges. 0 proven. 1502 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:44:56,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913204849] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:44:56,880 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:44:56,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 48, 48] total 97 [2021-11-23 12:44:56,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284045861] [2021-11-23 12:44:56,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:44:56,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2021-11-23 12:44:56,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:44:56,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2021-11-23 12:44:56,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=8911, Unknown=0, NotChecked=0, Total=9312 [2021-11-23 12:44:56,883 INFO L87 Difference]: Start difference. First operand 168 states and 169 transitions. Second operand has 97 states, 97 states have (on average 3.5051546391752577) internal successors, (340), 97 states have internal predecessors, (340), 0 states have call successors, (0), 0 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 12:45:04,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:04,670 INFO L93 Difference]: Finished difference Result 272 states and 274 transitions. [2021-11-23 12:45:04,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2021-11-23 12:45:04,671 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 3.5051546391752577) internal successors, (340), 97 states have internal predecessors, (340), 0 states have call successors, (0), 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 167 [2021-11-23 12:45:04,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:04,672 INFO L225 Difference]: With dead ends: 272 [2021-11-23 12:45:04,672 INFO L226 Difference]: Without dead ends: 270 [2021-11-23 12:45:04,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 283 SyntacticMatches, 3 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7651 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=1395, Invalid=25995, Unknown=0, NotChecked=0, Total=27390 [2021-11-23 12:45:04,674 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 544 mSDsluCounter, 4078 mSDsCounter, 0 mSdLazyCounter, 7219 mSolverCounterSat, 443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 4149 SdHoareTripleChecker+Invalid, 7662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 443 IncrementalHoareTripleChecker+Valid, 7219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:04,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 4149 Invalid, 7662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [443 Valid, 7219 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-23 12:45:04,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-23 12:45:04,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 177. [2021-11-23 12:45:04,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.0170454545454546) internal successors, (179), 176 states have internal predecessors, (179), 0 states have call successors, (0), 0 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 12:45:04,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 179 transitions. [2021-11-23 12:45:04,754 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 179 transitions. Word has length 167 [2021-11-23 12:45:04,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:04,754 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 179 transitions. [2021-11-23 12:45:04,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 3.5051546391752577) internal successors, (340), 97 states have internal predecessors, (340), 0 states have call successors, (0), 0 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 12:45:04,754 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 179 transitions. [2021-11-23 12:45:04,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-23 12:45:04,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:04,755 INFO L514 BasicCegarLoop]: trace histogram [21, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:04,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Forceful destruction successful, exit code 0 [2021-11-23 12:45:04,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2021-11-23 12:45:04,956 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:45:04,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:04,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1826007397, now seen corresponding path program 57 times [2021-11-23 12:45:04,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:04,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250331930] [2021-11-23 12:45:04,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:04,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:04,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:05,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 723 proven. 857 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:05,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:05,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250331930] [2021-11-23 12:45:05,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250331930] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:45:05,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063050458] [2021-11-23 12:45:05,807 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 12:45:05,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:05,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:05,820 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:05,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2021-11-23 12:45:07,506 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-11-23 12:45:07,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:45:07,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 44 conjunts are in the unsatisfiable core [2021-11-23 12:45:07,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:08,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 800 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:08,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:45:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1580 backedges. 800 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:09,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063050458] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:45:09,337 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:45:09,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45, 45] total 68 [2021-11-23 12:45:09,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034062855] [2021-11-23 12:45:09,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:45:09,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-11-23 12:45:09,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:09,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-11-23 12:45:09,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1061, Invalid=3495, Unknown=0, NotChecked=0, Total=4556 [2021-11-23 12:45:09,339 INFO L87 Difference]: Start difference. First operand 177 states and 179 transitions. Second operand has 68 states, 68 states have (on average 3.8676470588235294) internal successors, (263), 68 states have internal predecessors, (263), 0 states have call successors, (0), 0 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 12:45:10,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:10,103 INFO L93 Difference]: Finished difference Result 277 states and 279 transitions. [2021-11-23 12:45:10,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-23 12:45:10,104 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 3.8676470588235294) internal successors, (263), 68 states have internal predecessors, (263), 0 states have call successors, (0), 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 171 [2021-11-23 12:45:10,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:10,106 INFO L225 Difference]: With dead ends: 277 [2021-11-23 12:45:10,106 INFO L226 Difference]: Without dead ends: 189 [2021-11-23 12:45:10,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1965 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1817, Invalid=6015, Unknown=0, NotChecked=0, Total=7832 [2021-11-23 12:45:10,108 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 524 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:10,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 401 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 12:45:10,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-23 12:45:10,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 172. [2021-11-23 12:45:10,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.0116959064327486) internal successors, (173), 171 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 12:45:10,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 173 transitions. [2021-11-23 12:45:10,192 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 173 transitions. Word has length 171 [2021-11-23 12:45:10,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:10,193 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 173 transitions. [2021-11-23 12:45:10,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 3.8676470588235294) internal successors, (263), 68 states have internal predecessors, (263), 0 states have call successors, (0), 0 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 12:45:10,193 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 173 transitions. [2021-11-23 12:45:10,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-23 12:45:10,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:10,194 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 20, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:10,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Forceful destruction successful, exit code 0 [2021-11-23 12:45:10,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:10,414 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:45:10,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:10,414 INFO L85 PathProgramCache]: Analyzing trace with hash -2023075096, now seen corresponding path program 58 times [2021-11-23 12:45:10,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:10,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133113716] [2021-11-23 12:45:10,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:10,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:12,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1583 backedges. 0 proven. 1583 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:12,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:12,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133113716] [2021-11-23 12:45:12,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133113716] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:45:12,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150753808] [2021-11-23 12:45:12,293 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-23 12:45:12,293 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:12,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:12,295 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:12,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2021-11-23 12:45:12,705 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-23 12:45:12,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:45:12,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 544 conjuncts, 97 conjunts are in the unsatisfiable core [2021-11-23 12:45:12,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:45:14,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2021-11-23 12:45:14,518 INFO L354 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2021-11-23 12:45:14,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 56 [2021-11-23 12:45:17,483 INFO L354 Elim1Store]: treesize reduction 11, result has 21.4 percent of original size [2021-11-23 12:45:17,483 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2021-11-23 12:45:17,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1583 backedges. 0 proven. 1583 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:17,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:45:22,157 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~i~0#1_2525| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 22 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_2525| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_2525|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 80)))) (< |v_ULTIMATE.start_main_~i~0#1_2525| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) is different from false [2021-11-23 12:45:22,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 33 [2021-11-23 12:45:22,167 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 201 [2021-11-23 12:45:24,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1583 backedges. 0 proven. 1563 refuted. 0 times theorem prover too weak. 0 trivial. 20 not checked. [2021-11-23 12:45:24,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150753808] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 12:45:24,364 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 12:45:24,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 50] total 105 [2021-11-23 12:45:24,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024564178] [2021-11-23 12:45:24,364 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 12:45:24,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 105 states [2021-11-23 12:45:24,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:45:24,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2021-11-23 12:45:24,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=513, Invalid=10201, Unknown=2, NotChecked=204, Total=10920 [2021-11-23 12:45:24,366 INFO L87 Difference]: Start difference. First operand 172 states and 173 transitions. Second operand has 105 states, 105 states have (on average 3.361904761904762) internal successors, (353), 105 states have internal predecessors, (353), 0 states have call successors, (0), 0 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 12:45:28,374 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) (.cse2 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (.cse4 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse0 (< |c_ULTIMATE.start_main_~k~0#1| 10000)) (.cse3 (< 0 |c_ULTIMATE.start_main_~k~0#1|)) (.cse6 (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (.cse5 (< |c_ULTIMATE.start_main_~j~0#1| 10000))) (and (forall ((|v_ULTIMATE.start_main_~i~0#1_2525| Int)) (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (<= 22 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~#a~0#1.base|) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| (* |v_ULTIMATE.start_main_~i~0#1_2525| 4)) (+ |c_ULTIMATE.start_main_~j~0#1| |ULTIMATE.start_main_~k~0#1| |v_ULTIMATE.start_main_~i~0#1_2525|)) (+ |c_ULTIMATE.start_main_~#a~0#1.offset| 80)))) (< |v_ULTIMATE.start_main_~i~0#1_2525| (+ |c_ULTIMATE.start_main_~i~0#1| 1)))) .cse0 (<= |c_ULTIMATE.start_main_~i~0#1| 20) (<= 21 .cse1) (< .cse1 .cse2) (< .cse2 (+ 10000 |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~j~0#1|)) (<= 20 |c_ULTIMATE.start_main_~i~0#1|) .cse3 (or (and .cse4 (< 0 |c_ULTIMATE.start_main_~j~0#1|) .cse5) (and (or (<= 10000 |c_ULTIMATE.start_main_~j~0#1|) (<= |c_ULTIMATE.start_main_~j~0#1| 0)) .cse6)) (or (and .cse4 .cse0 .cse3) (and .cse6 (or (<= |c_ULTIMATE.start_main_~k~0#1| 0) (<= 10000 |c_ULTIMATE.start_main_~k~0#1|)))) .cse5)) is different from false [2021-11-23 12:45:29,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:45:29,363 INFO L93 Difference]: Finished difference Result 260 states and 262 transitions. [2021-11-23 12:45:29,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-11-23 12:45:29,364 INFO L78 Accepts]: Start accepts. Automaton has has 105 states, 105 states have (on average 3.361904761904762) internal successors, (353), 105 states have internal predecessors, (353), 0 states have call successors, (0), 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 171 [2021-11-23 12:45:29,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:45:29,366 INFO L225 Difference]: With dead ends: 260 [2021-11-23 12:45:29,366 INFO L226 Difference]: Without dead ends: 258 [2021-11-23 12:45:29,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 294 SyntacticMatches, 10 SemanticMatches, 125 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4824 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=692, Invalid=14813, Unknown=3, NotChecked=494, Total=16002 [2021-11-23 12:45:29,368 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 208 mSDsluCounter, 2574 mSDsCounter, 0 mSdLazyCounter, 3185 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 2646 SdHoareTripleChecker+Invalid, 4048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 3185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 819 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-23 12:45:29,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 2646 Invalid, 4048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 3185 Invalid, 0 Unknown, 819 Unchecked, 1.8s Time] [2021-11-23 12:45:29,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2021-11-23 12:45:29,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 181. [2021-11-23 12:45:29,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.0166666666666666) internal successors, (183), 180 states have internal predecessors, (183), 0 states have call successors, (0), 0 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 12:45:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 183 transitions. [2021-11-23 12:45:29,458 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 183 transitions. Word has length 171 [2021-11-23 12:45:29,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:45:29,458 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 183 transitions. [2021-11-23 12:45:29,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 105 states, 105 states have (on average 3.361904761904762) internal successors, (353), 105 states have internal predecessors, (353), 0 states have call successors, (0), 0 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 12:45:29,458 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 183 transitions. [2021-11-23 12:45:29,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-23 12:45:29,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:45:29,460 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:45:29,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2021-11-23 12:45:29,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:29,662 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:45:29,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:45:29,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1537206174, now seen corresponding path program 59 times [2021-11-23 12:45:29,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:45:29,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879387832] [2021-11-23 12:45:29,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:45:29,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:45:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:45:31,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1661 backedges. 0 proven. 1661 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:45:31,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:45:31,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879387832] [2021-11-23 12:45:31,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879387832] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 12:45:31,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51155541] [2021-11-23 12:45:31,567 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-23 12:45:31,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:45:31,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:45:31,568 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:45:31,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3408893-4af5-404a-b425-054cee6b3cee/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2021-11-23 12:45:32,452 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2021-11-23 12:45:32,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 12:45:32,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 99 conjunts are in the unsatisfiable core [2021-11-23 12:45:32,468 INFO L286 TraceCheckSpWp]: Computing forward predicates...