./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_stateful-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_stateful-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc --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 8ecae2ca1de1e5b446d807037ed0cb2d4fc04c355acb35a6870f18f7e175f10e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:55:45,043 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:55:45,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:55:45,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:55:45,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:55:45,099 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:55:45,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:55:45,106 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:55:45,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:55:45,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:55:45,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:55:45,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:55:45,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:55:45,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:55:45,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:55:45,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:55:45,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:55:45,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:55:45,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:55:45,138 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:55:45,140 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:55:45,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:55:45,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:55:45,147 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:55:45,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:55:45,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:55:45,156 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:55:45,158 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:55:45,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:55:45,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:55:45,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:55:45,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:55:45,164 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:55:45,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:55:45,167 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:55:45,167 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:55:45,167 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:55:45,168 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:55:45,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:55:45,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:55:45,169 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:55:45,170 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:55:45,213 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:55:45,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:55:45,214 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:55:45,214 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:55:45,215 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:55:45,215 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:55:45,216 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:55:45,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:55:45,217 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:55:45,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:55:45,218 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:55:45,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:55:45,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:55:45,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:55:45,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:55:45,219 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:55:45,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:55:45,220 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:55:45,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:55:45,220 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:55:45,220 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:55:45,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:55:45,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:55:45,221 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:55:45,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:55:45,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:55:45,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:55:45,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:55:45,222 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:55:45,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:55:45,223 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:55:45,223 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:55:45,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:55:45,224 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_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8ecae2ca1de1e5b446d807037ed0cb2d4fc04c355acb35a6870f18f7e175f10e [2022-11-02 20:55:45,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:55:45,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:55:45,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:55:45,631 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:55:45,632 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:55:45,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/seq-pthread/cs_stateful-1.i [2022-11-02 20:55:45,704 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/data/8be92010f/42407101e6c642e0a466e51a7bcebcd3/FLAGcc4d2f11a [2022-11-02 20:55:46,273 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:55:46,273 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/sv-benchmarks/c/seq-pthread/cs_stateful-1.i [2022-11-02 20:55:46,288 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/data/8be92010f/42407101e6c642e0a466e51a7bcebcd3/FLAGcc4d2f11a [2022-11-02 20:55:46,590 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/data/8be92010f/42407101e6c642e0a466e51a7bcebcd3 [2022-11-02 20:55:46,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:55:46,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:55:46,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:55:46,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:55:46,609 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:55:46,610 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:55:46" (1/1) ... [2022-11-02 20:55:46,613 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f39f3e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:46, skipping insertion in model container [2022-11-02 20:55:46,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:55:46" (1/1) ... [2022-11-02 20:55:46,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:55:46,699 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:55:47,188 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_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/sv-benchmarks/c/seq-pthread/cs_stateful-1.i[23400,23413] [2022-11-02 20:55:47,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:55:47,394 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:55:47,438 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_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/sv-benchmarks/c/seq-pthread/cs_stateful-1.i[23400,23413] [2022-11-02 20:55:47,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:55:47,518 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:55:47,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:47 WrapperNode [2022-11-02 20:55:47,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:55:47,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:55:47,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:55:47,521 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:55:47,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:47" (1/1) ... [2022-11-02 20:55:47,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:47" (1/1) ... [2022-11-02 20:55:47,629 INFO L138 Inliner]: procedures = 144, calls = 231, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 563 [2022-11-02 20:55:47,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:55:47,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:55:47,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:55:47,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:55:47,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:47" (1/1) ... [2022-11-02 20:55:47,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:47" (1/1) ... [2022-11-02 20:55:47,657 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:47" (1/1) ... [2022-11-02 20:55:47,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:47" (1/1) ... [2022-11-02 20:55:47,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:47" (1/1) ... [2022-11-02 20:55:47,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:47" (1/1) ... [2022-11-02 20:55:47,695 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:47" (1/1) ... [2022-11-02 20:55:47,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:47" (1/1) ... [2022-11-02 20:55:47,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:55:47,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:55:47,703 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:55:47,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:55:47,705 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:47" (1/1) ... [2022-11-02 20:55:47,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:55:47,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:55:47,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:55:47,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:55:47,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:55:47,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:55:47,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:55:47,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:55:47,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:55:47,798 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_init [2022-11-02 20:55:47,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_init [2022-11-02 20:55:47,800 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2022-11-02 20:55:47,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2022-11-02 20:55:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2022-11-02 20:55:47,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2022-11-02 20:55:47,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:55:47,802 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2022-11-02 20:55:47,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2022-11-02 20:55:47,802 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-11-02 20:55:47,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-11-02 20:55:47,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:55:47,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:55:47,803 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2022-11-02 20:55:47,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2022-11-02 20:55:47,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:55:47,803 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2022-11-02 20:55:47,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2022-11-02 20:55:47,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:55:47,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:55:48,032 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:55:48,034 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:55:48,566 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L746: SUMMARY for call __CS_cs(); srcloc: null [2022-11-02 20:55:48,566 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L746-1: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset);havoc main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset);havoc main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset; [2022-11-02 20:55:48,566 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L746-1: assume !(0 != ~__CS_ret~0 % 256); [2022-11-02 20:55:48,566 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume !(0 != ~__CS_ret~0 % 256); [2022-11-02 20:55:48,567 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset);havoc main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset);havoc main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset; [2022-11-02 20:55:48,567 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume !(0 != ~__CS_ret~0 % 256); [2022-11-02 20:55:48,567 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##28: assume 0 != ~__CS_ret~0 % 256;main_thread_#res#1.base, main_thread_#res#1.offset := 0, 0;call ULTIMATE.dealloc(main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset);havoc main_thread_~#t1~0#1.base, main_thread_~#t1~0#1.offset;call ULTIMATE.dealloc(main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset);havoc main_thread_~#t2~0#1.base, main_thread_~#t2~0#1.offset; [2022-11-02 20:55:51,011 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:55:51,019 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:55:51,020 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-02 20:55:51,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:55:51 BoogieIcfgContainer [2022-11-02 20:55:51,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:55:51,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:55:51,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:55:51,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:55:51,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:55:46" (1/3) ... [2022-11-02 20:55:51,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270261ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:55:51, skipping insertion in model container [2022-11-02 20:55:51,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:55:47" (2/3) ... [2022-11-02 20:55:51,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@270261ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:55:51, skipping insertion in model container [2022-11-02 20:55:51,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:55:51" (3/3) ... [2022-11-02 20:55:51,039 INFO L112 eAbstractionObserver]: Analyzing ICFG cs_stateful-1.i [2022-11-02 20:55:51,059 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:55:51,059 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:55:51,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:55:51,128 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6f9b4974, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:55:51,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 20:55:51,134 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 121 states have (on average 1.5041322314049588) internal successors, (182), 122 states have internal predecessors, (182), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-02 20:55:51,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-02 20:55:51,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:51,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:51,148 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:51,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:51,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1724368089, now seen corresponding path program 1 times [2022-11-02 20:55:51,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:51,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298170458] [2022-11-02 20:55:51,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:51,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:51,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:52,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:55:52,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:52,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298170458] [2022-11-02 20:55:52,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298170458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:52,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:52,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:55:52,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537932540] [2022-11-02 20:55:52,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:52,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:55:52,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:52,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:55:52,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:55:52,296 INFO L87 Difference]: Start difference. First operand has 172 states, 121 states have (on average 1.5041322314049588) internal successors, (182), 122 states have internal predecessors, (182), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:52,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:52,428 INFO L93 Difference]: Finished difference Result 347 states and 569 transitions. [2022-11-02 20:55:52,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:55:52,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-02 20:55:52,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:52,441 INFO L225 Difference]: With dead ends: 347 [2022-11-02 20:55:52,441 INFO L226 Difference]: Without dead ends: 173 [2022-11-02 20:55:52,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:55:52,451 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 5 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:52,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 492 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:55:52,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-02 20:55:52,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 169. [2022-11-02 20:55:52,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 119 states have (on average 1.3781512605042017) internal successors, (164), 119 states have internal predecessors, (164), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-02 20:55:52,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 248 transitions. [2022-11-02 20:55:52,510 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 248 transitions. Word has length 32 [2022-11-02 20:55:52,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:52,511 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 248 transitions. [2022-11-02 20:55:52,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:52,512 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 248 transitions. [2022-11-02 20:55:52,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-02 20:55:52,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:52,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:52,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:55:52,515 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:52,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:52,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1488698589, now seen corresponding path program 1 times [2022-11-02 20:55:52,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:52,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558760432] [2022-11-02 20:55:52,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:52,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:52,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:55:53,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:53,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558760432] [2022-11-02 20:55:53,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558760432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:53,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:55:53,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-02 20:55:53,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678390011] [2022-11-02 20:55:53,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:53,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:55:53,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:53,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:55:53,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:55:53,041 INFO L87 Difference]: Start difference. First operand 169 states and 248 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:53,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:53,112 INFO L93 Difference]: Finished difference Result 337 states and 496 transitions. [2022-11-02 20:55:53,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:55:53,120 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-02 20:55:53,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:53,122 INFO L225 Difference]: With dead ends: 337 [2022-11-02 20:55:53,123 INFO L226 Difference]: Without dead ends: 171 [2022-11-02 20:55:53,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:55:53,125 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:53,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 487 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:55:53,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-02 20:55:53,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2022-11-02 20:55:53,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 120 states have (on average 1.375) internal successors, (165), 120 states have internal predecessors, (165), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-02 20:55:53,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 249 transitions. [2022-11-02 20:55:53,164 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 249 transitions. Word has length 36 [2022-11-02 20:55:53,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:53,165 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 249 transitions. [2022-11-02 20:55:53,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:53,166 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 249 transitions. [2022-11-02 20:55:53,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-02 20:55:53,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:53,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:53,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:55:53,174 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:53,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:53,181 INFO L85 PathProgramCache]: Analyzing trace with hash 967627515, now seen corresponding path program 1 times [2022-11-02 20:55:53,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:53,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108850955] [2022-11-02 20:55:53,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:53,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:53,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:53,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:55:53,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:53,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108850955] [2022-11-02 20:55:53,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108850955] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:55:53,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026312554] [2022-11-02 20:55:53,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:53,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:55:53,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:55:53,808 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:55:53,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:55:54,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:54,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 1701 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:55:54,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:54,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:55:54,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:55:54,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:55:54,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026312554] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:55:54,797 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:55:54,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-11-02 20:55:54,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270353915] [2022-11-02 20:55:54,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:55:54,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:55:54,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:54,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:55:54,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:55:54,801 INFO L87 Difference]: Start difference. First operand 170 states and 249 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:54,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:54,906 INFO L93 Difference]: Finished difference Result 341 states and 501 transitions. [2022-11-02 20:55:54,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:55:54,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 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 38 [2022-11-02 20:55:54,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:54,909 INFO L225 Difference]: With dead ends: 341 [2022-11-02 20:55:54,909 INFO L226 Difference]: Without dead ends: 174 [2022-11-02 20:55:54,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:55:54,912 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 3 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:54,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 971 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:55:54,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-11-02 20:55:54,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2022-11-02 20:55:54,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 124 states have (on average 1.3629032258064515) internal successors, (169), 124 states have internal predecessors, (169), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-02 20:55:54,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 253 transitions. [2022-11-02 20:55:54,952 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 253 transitions. Word has length 38 [2022-11-02 20:55:54,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:54,952 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 253 transitions. [2022-11-02 20:55:54,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:54,953 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 253 transitions. [2022-11-02 20:55:54,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 20:55:54,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:54,954 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:55,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:55,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:55:55,179 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:55,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:55,179 INFO L85 PathProgramCache]: Analyzing trace with hash -624054089, now seen corresponding path program 2 times [2022-11-02 20:55:55,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:55,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308323629] [2022-11-02 20:55:55,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:55,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:55,783 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-02 20:55:55,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:55,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308323629] [2022-11-02 20:55:55,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308323629] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:55:55,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435125223] [2022-11-02 20:55:55,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:55:55,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:55:55,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:55:55,791 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:55:55,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:55:57,084 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:55:57,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:55:57,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 1584 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:55:57,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:57,244 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:55:57,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:55:57,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435125223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:55:57,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:55:57,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-02 20:55:57,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72433657] [2022-11-02 20:55:57,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:55:57,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:55:57,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:57,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:55:57,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:55:57,248 INFO L87 Difference]: Start difference. First operand 174 states and 253 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:57,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:55:57,308 INFO L93 Difference]: Finished difference Result 332 states and 495 transitions. [2022-11-02 20:55:57,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:55:57,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 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 42 [2022-11-02 20:55:57,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:55:57,315 INFO L225 Difference]: With dead ends: 332 [2022-11-02 20:55:57,315 INFO L226 Difference]: Without dead ends: 306 [2022-11-02 20:55:57,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:55:57,317 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 206 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 934 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:55:57,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 934 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:55:57,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-11-02 20:55:57,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 305. [2022-11-02 20:55:57,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 207 states have (on average 1.4106280193236715) internal successors, (292), 207 states have internal predecessors, (292), 83 states have call successors, (83), 14 states have call predecessors, (83), 14 states have return successors, (91), 83 states have call predecessors, (91), 83 states have call successors, (91) [2022-11-02 20:55:57,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 466 transitions. [2022-11-02 20:55:57,382 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 466 transitions. Word has length 42 [2022-11-02 20:55:57,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:55:57,383 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 466 transitions. [2022-11-02 20:55:57,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:55:57,383 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 466 transitions. [2022-11-02 20:55:57,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-02 20:55:57,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:55:57,400 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:55:57,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:55:57,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:55:57,601 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:55:57,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:55:57,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1759881955, now seen corresponding path program 1 times [2022-11-02 20:55:57,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:55:57,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475069356] [2022-11-02 20:55:57,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:57,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:55:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:58,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:55:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:58,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:55:58,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:58,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:55:58,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:58,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:55:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:58,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:55:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:58,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:55:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:58,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:55:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:58,324 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-02 20:55:58,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:55:58,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475069356] [2022-11-02 20:55:58,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475069356] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:55:58,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604317356] [2022-11-02 20:55:58,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:55:58,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:55:58,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:55:58,333 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:55:58,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:55:59,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:55:59,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 2039 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:55:59,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:55:59,507 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-02 20:55:59,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:55:59,605 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-02 20:55:59,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604317356] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:55:59,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:55:59,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 9 [2022-11-02 20:55:59,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976649654] [2022-11-02 20:55:59,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:55:59,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:55:59,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:55:59,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:55:59,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:55:59,609 INFO L87 Difference]: Start difference. First operand 305 states and 466 transitions. Second operand has 9 states, 9 states have (on average 11.0) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:56:01,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:56:03,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:56:05,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:56:07,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:56:08,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:08,906 INFO L93 Difference]: Finished difference Result 617 states and 950 transitions. [2022-11-02 20:56:08,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:56:08,908 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 100 [2022-11-02 20:56:08,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:08,914 INFO L225 Difference]: With dead ends: 617 [2022-11-02 20:56:08,914 INFO L226 Difference]: Without dead ends: 325 [2022-11-02 20:56:08,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 207 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:56:08,930 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 36 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 51 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:08,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 966 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 563 Invalid, 4 Unknown, 0 Unchecked, 9.2s Time] [2022-11-02 20:56:08,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-11-02 20:56:08,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 319. [2022-11-02 20:56:08,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 219 states have (on average 1.3926940639269407) internal successors, (305), 221 states have internal predecessors, (305), 83 states have call successors, (83), 14 states have call predecessors, (83), 16 states have return successors, (97), 83 states have call predecessors, (97), 83 states have call successors, (97) [2022-11-02 20:56:08,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 485 transitions. [2022-11-02 20:56:08,998 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 485 transitions. Word has length 100 [2022-11-02 20:56:08,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:08,998 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 485 transitions. [2022-11-02 20:56:08,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.0) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-02 20:56:08,999 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 485 transitions. [2022-11-02 20:56:09,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-02 20:56:09,005 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:09,005 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:09,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:09,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:09,230 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:09,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:09,231 INFO L85 PathProgramCache]: Analyzing trace with hash -420954683, now seen corresponding path program 2 times [2022-11-02 20:56:09,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:09,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971425700] [2022-11-02 20:56:09,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:09,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:10,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:56:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:10,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:56:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:10,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:56:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:10,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:56:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:10,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:56:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:10,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:56:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:10,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:56:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:11,005 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-02 20:56:11,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:11,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971425700] [2022-11-02 20:56:11,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971425700] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:56:11,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:56:11,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:56:11,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533449618] [2022-11-02 20:56:11,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:56:11,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:56:11,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:11,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:56:11,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:56:11,016 INFO L87 Difference]: Start difference. First operand 319 states and 485 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 20:56:13,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:56:14,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:14,656 INFO L93 Difference]: Finished difference Result 662 states and 1021 transitions. [2022-11-02 20:56:14,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:56:14,657 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 110 [2022-11-02 20:56:14,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:14,664 INFO L225 Difference]: With dead ends: 662 [2022-11-02 20:56:14,664 INFO L226 Difference]: Without dead ends: 636 [2022-11-02 20:56:14,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:56:14,667 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 313 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 167 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 929 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:14,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 929 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 677 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-11-02 20:56:14,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-11-02 20:56:14,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 595. [2022-11-02 20:56:14,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 394 states have (on average 1.4238578680203047) internal successors, (561), 401 states have internal predecessors, (561), 165 states have call successors, (165), 28 states have call predecessors, (165), 35 states have return successors, (209), 165 states have call predecessors, (209), 165 states have call successors, (209) [2022-11-02 20:56:14,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 935 transitions. [2022-11-02 20:56:14,730 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 935 transitions. Word has length 110 [2022-11-02 20:56:14,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:14,731 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 935 transitions. [2022-11-02 20:56:14,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 20:56:14,731 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 935 transitions. [2022-11-02 20:56:14,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-02 20:56:14,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:14,734 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:14,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 20:56:14,735 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:14,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:14,736 INFO L85 PathProgramCache]: Analyzing trace with hash -593993191, now seen corresponding path program 1 times [2022-11-02 20:56:14,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:14,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426249670] [2022-11-02 20:56:14,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:14,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:56:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:26,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:56:26,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:26,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:56:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:26,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:56:26,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:26,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-02 20:56:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:26,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-02 20:56:26,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:26,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:56:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:26,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-02 20:56:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:26,565 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-02 20:56:26,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:56:26,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426249670] [2022-11-02 20:56:26,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426249670] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:56:26,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349619921] [2022-11-02 20:56:26,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:26,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:56:26,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:56:26,570 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:56:26,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:56:27,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:56:27,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 2211 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:56:27,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:56:28,126 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-02 20:56:28,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:56:28,593 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-02 20:56:28,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349619921] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:56:28,594 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:56:28,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 8] total 20 [2022-11-02 20:56:28,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467086013] [2022-11-02 20:56:28,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:56:28,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:56:28,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:56:28,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:56:28,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:56:28,598 INFO L87 Difference]: Start difference. First operand 595 states and 935 transitions. Second operand has 20 states, 19 states have (on average 6.052631578947368) internal successors, (115), 14 states have internal predecessors, (115), 5 states have call successors, (17), 6 states have call predecessors, (17), 8 states have return successors, (18), 9 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-02 20:56:30,667 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:56:34,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:56:34,124 INFO L93 Difference]: Finished difference Result 1636 states and 2674 transitions. [2022-11-02 20:56:34,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:56:34,126 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 6.052631578947368) internal successors, (115), 14 states have internal predecessors, (115), 5 states have call successors, (17), 6 states have call predecessors, (17), 8 states have return successors, (18), 9 states have call predecessors, (18), 5 states have call successors, (18) Word has length 110 [2022-11-02 20:56:34,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:56:34,140 INFO L225 Difference]: With dead ends: 1636 [2022-11-02 20:56:34,140 INFO L226 Difference]: Without dead ends: 1067 [2022-11-02 20:56:34,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 230 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=224, Invalid=898, Unknown=0, NotChecked=0, Total=1122 [2022-11-02 20:56:34,150 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 836 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 1489 mSolverCounterSat, 611 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 2101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 611 IncrementalHoareTripleChecker+Valid, 1489 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:56:34,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 1091 Invalid, 2101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [611 Valid, 1489 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2022-11-02 20:56:34,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1067 states. [2022-11-02 20:56:34,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1067 to 901. [2022-11-02 20:56:34,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 646 states have (on average 1.2647058823529411) internal successors, (817), 561 states have internal predecessors, (817), 189 states have call successors, (189), 32 states have call predecessors, (189), 65 states have return successors, (407), 307 states have call predecessors, (407), 189 states have call successors, (407) [2022-11-02 20:56:34,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1413 transitions. [2022-11-02 20:56:34,309 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1413 transitions. Word has length 110 [2022-11-02 20:56:34,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:56:34,310 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1413 transitions. [2022-11-02 20:56:34,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.052631578947368) internal successors, (115), 14 states have internal predecessors, (115), 5 states have call successors, (17), 6 states have call predecessors, (17), 8 states have return successors, (18), 9 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-02 20:56:34,311 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1413 transitions. [2022-11-02 20:56:34,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-02 20:56:34,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:56:34,316 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:56:34,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:56:34,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 20:56:34,542 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:56:34,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:56:34,543 INFO L85 PathProgramCache]: Analyzing trace with hash 7500526, now seen corresponding path program 1 times [2022-11-02 20:56:34,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:56:34,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657974223] [2022-11-02 20:56:34,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:56:34,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:02,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-02 20:57:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:02,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:57:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:02,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:57:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:02,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:57:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:02,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-02 20:57:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:02,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:57:02,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:02,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 20:57:02,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:02,360 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-02 20:57:02,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:02,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657974223] [2022-11-02 20:57:02,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657974223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:57:02,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:57:02,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:57:02,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667560129] [2022-11-02 20:57:02,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:57:02,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:57:02,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:02,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:57:02,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:57:02,363 INFO L87 Difference]: Start difference. First operand 901 states and 1413 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 20:57:04,395 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:57:06,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:57:06,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:06,997 INFO L93 Difference]: Finished difference Result 1743 states and 2714 transitions. [2022-11-02 20:57:06,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:57:06,998 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 111 [2022-11-02 20:57:06,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:07,006 INFO L225 Difference]: With dead ends: 1743 [2022-11-02 20:57:07,006 INFO L226 Difference]: Without dead ends: 901 [2022-11-02 20:57:07,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:57:07,012 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 88 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 171 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:07,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 623 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 266 Invalid, 2 Unknown, 0 Unchecked, 4.5s Time] [2022-11-02 20:57:07,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2022-11-02 20:57:07,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 901. [2022-11-02 20:57:07,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 646 states have (on average 1.263157894736842) internal successors, (816), 561 states have internal predecessors, (816), 189 states have call successors, (189), 32 states have call predecessors, (189), 65 states have return successors, (407), 307 states have call predecessors, (407), 189 states have call successors, (407) [2022-11-02 20:57:07,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1412 transitions. [2022-11-02 20:57:07,092 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1412 transitions. Word has length 111 [2022-11-02 20:57:07,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:07,092 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1412 transitions. [2022-11-02 20:57:07,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-02 20:57:07,093 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1412 transitions. [2022-11-02 20:57:07,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-02 20:57:07,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:07,096 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:07,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:57:07,096 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:07,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:07,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1317733594, now seen corresponding path program 1 times [2022-11-02 20:57:07,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:07,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996613532] [2022-11-02 20:57:07,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:07,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:57:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:44,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 20:57:44,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:44,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:57:44,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:44,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 20:57:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:44,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:57:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:44,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:57:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:44,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:57:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:44,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-02 20:57:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:44,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:57:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:44,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 20:57:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-11-02 20:57:44,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:57:44,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996613532] [2022-11-02 20:57:44,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996613532] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:57:44,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14207871] [2022-11-02 20:57:44,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:44,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:44,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:57:44,459 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:57:44,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:57:46,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:57:46,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 2343 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-02 20:57:46,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:57:46,307 INFO L356 Elim1Store]: treesize reduction 128, result has 24.3 percent of original size [2022-11-02 20:57:46,308 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 1791 treesize of output 1787 [2022-11-02 20:57:47,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-02 20:57:47,400 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-02 20:57:47,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-02 20:57:48,353 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 20:57:48,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 16 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 37 [2022-11-02 20:57:48,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-02 20:57:49,250 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-02 20:57:49,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-02 20:57:50,115 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-02 20:57:50,115 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 37 [2022-11-02 20:57:50,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:50,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:50,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:50,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:50,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:50,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:50,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:50,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:50,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:50,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:50,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:50,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:50,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:50,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:50,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:50,325 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:57:50,519 INFO L356 Elim1Store]: treesize reduction 258, result has 26.1 percent of original size [2022-11-02 20:57:50,520 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 111 [2022-11-02 20:57:50,526 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2022-11-02 20:57:50,675 INFO L390 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 9 treesize of output 3 [2022-11-02 20:57:50,870 INFO L390 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 7 [2022-11-02 20:57:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 33 proven. 16 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-11-02 20:57:50,904 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:57:51,256 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_13121 (Array Int Int)) (v_ArrVal_13112 (Array Int Int)) (v_ArrVal_13123 (Array Int Int)) (v_ArrVal_13124 (Array Int Int)) (v_ArrVal_13113 (Array Int Int)) (v_ArrVal_13126 (Array Int Int)) (v_ArrVal_13116 (Array Int Int)) (v_ArrVal_13119 (Array Int Int))) (not (= (mod (select (select (store (store (store (store (store (store (store (store |c_#memory_int| |c_~#__CS_thread_status~0.base| v_ArrVal_13124) |c_~#__CS_thread_lockedon~0.base| v_ArrVal_13126) |c_~#ma~0.base| v_ArrVal_13112) |c_~#mb~0.base| v_ArrVal_13119) |c_~#data1~0.base| v_ArrVal_13116) |c_~#data2~0.base| v_ArrVal_13113) |c_~#__CS_thread_born_round~0.base| v_ArrVal_13121) |c_~#__CS_thread_status~0.base| v_ArrVal_13123) |c_~#__CS_thread_allocated~0.base|) (+ 2 |c_~#__CS_thread_allocated~0.offset|)) 256) 1))) is different from false [2022-11-02 20:57:51,312 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_13107 (Array Int Int)) (v_ArrVal_13108 (Array Int Int)) (v_ArrVal_13119 (Array Int Int)) (v_ArrVal_13121 (Array Int Int)) (v_ArrVal_13112 (Array Int Int)) (v_ArrVal_13123 (Array Int Int)) (v_ArrVal_13124 (Array Int Int)) (v_ArrVal_13113 (Array Int Int)) (v_ArrVal_13126 (Array Int Int)) (v_ArrVal_13105 (Array Int Int)) (v_ArrVal_13116 (Array Int Int)) (v_ArrVal_13106 (Array Int Int))) (not (= (mod (select (select (store (store (store (store (store (store (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#__CS_cp_ma~0#1.base| v_ArrVal_13108) |c_ULTIMATE.start_main_~#__CS_cp_mb~0#1.base| v_ArrVal_13106) |c_ULTIMATE.start_main_~#__CS_cp_data1~0#1.base| v_ArrVal_13107) |c_ULTIMATE.start_main_~#__CS_cp_data2~0#1.base| v_ArrVal_13105) |c_~#__CS_thread_status~0.base| v_ArrVal_13124) |c_~#__CS_thread_lockedon~0.base| v_ArrVal_13126) |c_~#ma~0.base| v_ArrVal_13112) |c_~#mb~0.base| v_ArrVal_13119) |c_~#data1~0.base| v_ArrVal_13116) |c_~#data2~0.base| v_ArrVal_13113) |c_~#__CS_thread_born_round~0.base| v_ArrVal_13121) |c_~#__CS_thread_status~0.base| v_ArrVal_13123) |c_~#__CS_thread_allocated~0.base|) (+ 2 |c_~#__CS_thread_allocated~0.offset|)) 256) 1))) is different from false [2022-11-02 20:57:51,368 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_13107 (Array Int Int)) (v_ArrVal_13108 (Array Int Int)) (v_ArrVal_13119 (Array Int Int)) (v_ArrVal_13121 (Array Int Int)) (v_ArrVal_13112 (Array Int Int)) (v_ArrVal_13123 (Array Int Int)) (v_ArrVal_13124 (Array Int Int)) (v_ArrVal_13113 (Array Int Int)) (v_ArrVal_13103 (Array Int Int)) (v_ArrVal_13104 (Array Int Int)) (v_ArrVal_13126 (Array Int Int)) (v_ArrVal_13105 (Array Int Int)) (v_ArrVal_13116 (Array Int Int)) (v_ArrVal_13106 (Array Int Int))) (not (= (mod (select (select (store (store (store (store (store (store (store (store (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13104) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13103) |c_ULTIMATE.start_main_~#__CS_cp_ma~0#1.base| v_ArrVal_13108) |c_ULTIMATE.start_main_~#__CS_cp_mb~0#1.base| v_ArrVal_13106) |c_ULTIMATE.start_main_~#__CS_cp_data1~0#1.base| v_ArrVal_13107) |c_ULTIMATE.start_main_~#__CS_cp_data2~0#1.base| v_ArrVal_13105) |c_~#__CS_thread_status~0.base| v_ArrVal_13124) |c_~#__CS_thread_lockedon~0.base| v_ArrVal_13126) |c_~#ma~0.base| v_ArrVal_13112) |c_~#mb~0.base| v_ArrVal_13119) |c_~#data1~0.base| v_ArrVal_13116) |c_~#data2~0.base| v_ArrVal_13113) |c_~#__CS_thread_born_round~0.base| v_ArrVal_13121) |c_~#__CS_thread_status~0.base| v_ArrVal_13123) |c_~#__CS_thread_allocated~0.base|) (+ 2 |c_~#__CS_thread_allocated~0.offset|)) 256) 1))) is different from false [2022-11-02 20:57:51,421 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_13107 (Array Int Int)) (v_ArrVal_13108 (Array Int Int)) (v_ArrVal_13119 (Array Int Int)) (v_ArrVal_13121 (Array Int Int)) (v_ArrVal_13101 (Array Int Int)) (v_ArrVal_13112 (Array Int Int)) (v_ArrVal_13123 (Array Int Int)) (v_ArrVal_13102 (Array Int Int)) (v_ArrVal_13124 (Array Int Int)) (v_ArrVal_13113 (Array Int Int)) (v_ArrVal_13103 (Array Int Int)) (v_ArrVal_13104 (Array Int Int)) (v_ArrVal_13126 (Array Int Int)) (v_ArrVal_13105 (Array Int Int)) (v_ArrVal_13116 (Array Int Int)) (v_ArrVal_13106 (Array Int Int))) (not (= (mod (select (select (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13101) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13102) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13104) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13103) |c_ULTIMATE.start_main_~#__CS_cp_ma~0#1.base| v_ArrVal_13108) |c_ULTIMATE.start_main_~#__CS_cp_mb~0#1.base| v_ArrVal_13106) |c_ULTIMATE.start_main_~#__CS_cp_data1~0#1.base| v_ArrVal_13107) |c_ULTIMATE.start_main_~#__CS_cp_data2~0#1.base| v_ArrVal_13105) |c_~#__CS_thread_status~0.base| v_ArrVal_13124) |c_~#__CS_thread_lockedon~0.base| v_ArrVal_13126) |c_~#ma~0.base| v_ArrVal_13112) |c_~#mb~0.base| v_ArrVal_13119) |c_~#data1~0.base| v_ArrVal_13116) |c_~#data2~0.base| v_ArrVal_13113) |c_~#__CS_thread_born_round~0.base| v_ArrVal_13121) |c_~#__CS_thread_status~0.base| v_ArrVal_13123) |c_~#__CS_thread_allocated~0.base|) (+ 2 |c_~#__CS_thread_allocated~0.offset|)) 256) 1))) is different from false [2022-11-02 20:57:51,479 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_13107 (Array Int Int)) (v_ArrVal_13108 (Array Int Int)) (v_ArrVal_13119 (Array Int Int)) (v_ArrVal_13099 (Array Int Int)) (v_ArrVal_13121 (Array Int Int)) (v_ArrVal_13100 (Array Int Int)) (v_ArrVal_13101 (Array Int Int)) (v_ArrVal_13112 (Array Int Int)) (v_ArrVal_13123 (Array Int Int)) (v_ArrVal_13102 (Array Int Int)) (v_ArrVal_13124 (Array Int Int)) (v_ArrVal_13113 (Array Int Int)) (v_ArrVal_13103 (Array Int Int)) (v_ArrVal_13104 (Array Int Int)) (v_ArrVal_13126 (Array Int Int)) (v_ArrVal_13105 (Array Int Int)) (v_ArrVal_13116 (Array Int Int)) (v_ArrVal_13106 (Array Int Int))) (not (= (mod (select (select (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13100) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13099) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13101) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13102) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13104) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13103) |c_ULTIMATE.start_main_~#__CS_cp_ma~0#1.base| v_ArrVal_13108) |c_ULTIMATE.start_main_~#__CS_cp_mb~0#1.base| v_ArrVal_13106) |c_ULTIMATE.start_main_~#__CS_cp_data1~0#1.base| v_ArrVal_13107) |c_ULTIMATE.start_main_~#__CS_cp_data2~0#1.base| v_ArrVal_13105) |c_~#__CS_thread_status~0.base| v_ArrVal_13124) |c_~#__CS_thread_lockedon~0.base| v_ArrVal_13126) |c_~#ma~0.base| v_ArrVal_13112) |c_~#mb~0.base| v_ArrVal_13119) |c_~#data1~0.base| v_ArrVal_13116) |c_~#data2~0.base| v_ArrVal_13113) |c_~#__CS_thread_born_round~0.base| v_ArrVal_13121) |c_~#__CS_thread_status~0.base| v_ArrVal_13123) |c_~#__CS_thread_allocated~0.base|) (+ 2 |c_~#__CS_thread_allocated~0.offset|)) 256) 1))) is different from false [2022-11-02 20:57:51,578 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_13107 (Array Int Int)) (v_ArrVal_13108 (Array Int Int)) (v_ArrVal_13119 (Array Int Int)) (v_ArrVal_13099 (Array Int Int)) (v_ArrVal_13121 (Array Int Int)) (v_ArrVal_13100 (Array Int Int)) (v_ArrVal_13101 (Array Int Int)) (v_ArrVal_13112 (Array Int Int)) (v_ArrVal_13123 (Array Int Int)) (v_ArrVal_13102 (Array Int Int)) (v_ArrVal_13124 (Array Int Int)) (v_ArrVal_13113 (Array Int Int)) (v_ArrVal_13103 (Array Int Int)) (v_ArrVal_13104 (Array Int Int)) (v_ArrVal_13126 (Array Int Int)) (v_ArrVal_13105 (Array Int Int)) (v_ArrVal_13116 (Array Int Int)) (v_ArrVal_13106 (Array Int Int)) (v_ArrVal_13095 (Array Int Int)) (v_ArrVal_13096 (Array Int Int)) (v_ArrVal_13097 (Array Int Int)) (v_ArrVal_13098 (Array Int Int))) (not (= (mod (select (select (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#__CS_cp_ma~0#1.base| v_ArrVal_13098) |c_ULTIMATE.start_main_~#__CS_cp_mb~0#1.base| v_ArrVal_13096) |c_ULTIMATE.start_main_~#__CS_cp_data1~0#1.base| v_ArrVal_13097) |c_ULTIMATE.start_main_~#__CS_cp_data2~0#1.base| v_ArrVal_13095) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13100) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13099) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13101) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13102) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13104) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13103) |c_ULTIMATE.start_main_~#__CS_cp_ma~0#1.base| v_ArrVal_13108) |c_ULTIMATE.start_main_~#__CS_cp_mb~0#1.base| v_ArrVal_13106) |c_ULTIMATE.start_main_~#__CS_cp_data1~0#1.base| v_ArrVal_13107) |c_ULTIMATE.start_main_~#__CS_cp_data2~0#1.base| v_ArrVal_13105) |c_~#__CS_thread_status~0.base| v_ArrVal_13124) |c_~#__CS_thread_lockedon~0.base| v_ArrVal_13126) |c_~#ma~0.base| v_ArrVal_13112) |c_~#mb~0.base| v_ArrVal_13119) |c_~#data1~0.base| v_ArrVal_13116) |c_~#data2~0.base| v_ArrVal_13113) |c_~#__CS_thread_born_round~0.base| v_ArrVal_13121) |c_~#__CS_thread_status~0.base| v_ArrVal_13123) |c_~#__CS_thread_allocated~0.base|) (+ 2 |c_~#__CS_thread_allocated~0.offset|)) 256) 1))) is different from false [2022-11-02 20:57:51,713 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_13107 (Array Int Int)) (v_ArrVal_13108 (Array Int Int)) (v_ArrVal_13099 (Array Int Int)) (v_ArrVal_13112 (Array Int Int)) (v_ArrVal_13113 (Array Int Int)) (v_ArrVal_13116 (Array Int Int)) (v_ArrVal_13093 (Array Int Int)) (v_ArrVal_13094 (Array Int Int)) (v_ArrVal_13095 (Array Int Int)) (v_ArrVal_13096 (Array Int Int)) (v_ArrVal_13097 (Array Int Int)) (v_ArrVal_13098 (Array Int Int)) (v_ArrVal_13119 (Array Int Int)) (v_ArrVal_13121 (Array Int Int)) (v_ArrVal_13100 (Array Int Int)) (v_ArrVal_13101 (Array Int Int)) (v_ArrVal_13123 (Array Int Int)) (v_ArrVal_13102 (Array Int Int)) (v_ArrVal_13124 (Array Int Int)) (v_ArrVal_13103 (Array Int Int)) (v_ArrVal_13104 (Array Int Int)) (v_ArrVal_13126 (Array Int Int)) (v_ArrVal_13105 (Array Int Int)) (v_ArrVal_13106 (Array Int Int))) (not (= (mod (select (select (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13094) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13093) |c_ULTIMATE.start_main_~#__CS_cp_ma~0#1.base| v_ArrVal_13098) |c_ULTIMATE.start_main_~#__CS_cp_mb~0#1.base| v_ArrVal_13096) |c_ULTIMATE.start_main_~#__CS_cp_data1~0#1.base| v_ArrVal_13097) |c_ULTIMATE.start_main_~#__CS_cp_data2~0#1.base| v_ArrVal_13095) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13100) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13099) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13101) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13102) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13104) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13103) |c_ULTIMATE.start_main_~#__CS_cp_ma~0#1.base| v_ArrVal_13108) |c_ULTIMATE.start_main_~#__CS_cp_mb~0#1.base| v_ArrVal_13106) |c_ULTIMATE.start_main_~#__CS_cp_data1~0#1.base| v_ArrVal_13107) |c_ULTIMATE.start_main_~#__CS_cp_data2~0#1.base| v_ArrVal_13105) |c_~#__CS_thread_status~0.base| v_ArrVal_13124) |c_~#__CS_thread_lockedon~0.base| v_ArrVal_13126) |c_~#ma~0.base| v_ArrVal_13112) |c_~#mb~0.base| v_ArrVal_13119) |c_~#data1~0.base| v_ArrVal_13116) |c_~#data2~0.base| v_ArrVal_13113) |c_~#__CS_thread_born_round~0.base| v_ArrVal_13121) |c_~#__CS_thread_status~0.base| v_ArrVal_13123) |c_~#__CS_thread_allocated~0.base|) (+ 2 |c_~#__CS_thread_allocated~0.offset|)) 256) 1))) is different from false [2022-11-02 20:57:51,911 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_13107 (Array Int Int)) (v_ArrVal_13108 (Array Int Int)) (v_ArrVal_13099 (Array Int Int)) (v_ArrVal_13112 (Array Int Int)) (v_ArrVal_13113 (Array Int Int)) (v_ArrVal_13116 (Array Int Int)) (v_ArrVal_13091 (Array Int Int)) (v_ArrVal_13092 (Array Int Int)) (v_ArrVal_13093 (Array Int Int)) (v_ArrVal_13094 (Array Int Int)) (v_ArrVal_13095 (Array Int Int)) (v_ArrVal_13096 (Array Int Int)) (v_ArrVal_13097 (Array Int Int)) (v_ArrVal_13098 (Array Int Int)) (v_ArrVal_13119 (Array Int Int)) (v_ArrVal_13121 (Array Int Int)) (v_ArrVal_13100 (Array Int Int)) (v_ArrVal_13101 (Array Int Int)) (v_ArrVal_13123 (Array Int Int)) (v_ArrVal_13102 (Array Int Int)) (v_ArrVal_13124 (Array Int Int)) (v_ArrVal_13103 (Array Int Int)) (v_ArrVal_13104 (Array Int Int)) (v_ArrVal_13126 (Array Int Int)) (v_ArrVal_13105 (Array Int Int)) (v_ArrVal_13106 (Array Int Int))) (not (= (mod (select (select (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13092) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13091) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13094) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13093) |c_ULTIMATE.start_main_~#__CS_cp_ma~0#1.base| v_ArrVal_13098) |c_ULTIMATE.start_main_~#__CS_cp_mb~0#1.base| v_ArrVal_13096) |c_ULTIMATE.start_main_~#__CS_cp_data1~0#1.base| v_ArrVal_13097) |c_ULTIMATE.start_main_~#__CS_cp_data2~0#1.base| v_ArrVal_13095) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13100) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13099) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13101) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13102) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13104) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13103) |c_ULTIMATE.start_main_~#__CS_cp_ma~0#1.base| v_ArrVal_13108) |c_ULTIMATE.start_main_~#__CS_cp_mb~0#1.base| v_ArrVal_13106) |c_ULTIMATE.start_main_~#__CS_cp_data1~0#1.base| v_ArrVal_13107) |c_ULTIMATE.start_main_~#__CS_cp_data2~0#1.base| v_ArrVal_13105) |c_~#__CS_thread_status~0.base| v_ArrVal_13124) |c_~#__CS_thread_lockedon~0.base| v_ArrVal_13126) |c_~#ma~0.base| v_ArrVal_13112) |c_~#mb~0.base| v_ArrVal_13119) |c_~#data1~0.base| v_ArrVal_13116) |c_~#data2~0.base| v_ArrVal_13113) |c_~#__CS_thread_born_round~0.base| v_ArrVal_13121) |c_~#__CS_thread_status~0.base| v_ArrVal_13123) |c_~#__CS_thread_allocated~0.base|) (+ 2 |c_~#__CS_thread_allocated~0.offset|)) 256) 1))) is different from false [2022-11-02 20:57:52,046 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_13090 (Array Int Int)) (v_ArrVal_13107 (Array Int Int)) (v_ArrVal_13108 (Array Int Int)) (v_ArrVal_13099 (Array Int Int)) (v_ArrVal_13112 (Array Int Int)) (v_ArrVal_13113 (Array Int Int)) (v_ArrVal_13116 (Array Int Int)) (v_ArrVal_13091 (Array Int Int)) (v_ArrVal_13092 (Array Int Int)) (v_ArrVal_13093 (Array Int Int)) (v_ArrVal_13094 (Array Int Int)) (v_ArrVal_13095 (Array Int Int)) (v_ArrVal_13096 (Array Int Int)) (v_ArrVal_13097 (Array Int Int)) (v_ArrVal_13098 (Array Int Int)) (v_ArrVal_13119 (Array Int Int)) (v_ArrVal_13121 (Array Int Int)) (v_ArrVal_13089 (Array Int Int)) (v_ArrVal_13100 (Array Int Int)) (v_ArrVal_13101 (Array Int Int)) (v_ArrVal_13123 (Array Int Int)) (v_ArrVal_13102 (Array Int Int)) (v_ArrVal_13124 (Array Int Int)) (v_ArrVal_13103 (Array Int Int)) (v_ArrVal_13104 (Array Int Int)) (v_ArrVal_13126 (Array Int Int)) (v_ArrVal_13105 (Array Int Int)) (v_ArrVal_13106 (Array Int Int))) (not (= (mod (select (select (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13090) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13089) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13092) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13091) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13094) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13093) |c_ULTIMATE.start_main_~#__CS_cp_ma~0#1.base| v_ArrVal_13098) |c_ULTIMATE.start_main_~#__CS_cp_mb~0#1.base| v_ArrVal_13096) |c_ULTIMATE.start_main_~#__CS_cp_data1~0#1.base| v_ArrVal_13097) |c_ULTIMATE.start_main_~#__CS_cp_data2~0#1.base| v_ArrVal_13095) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13100) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13099) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13101) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13102) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_status~0#1.base| v_ArrVal_13104) |c_ULTIMATE.start_main_~#__CS_cp___CS_thread_lockedon~0#1.base| v_ArrVal_13103) |c_ULTIMATE.start_main_~#__CS_cp_ma~0#1.base| v_ArrVal_13108) |c_ULTIMATE.start_main_~#__CS_cp_mb~0#1.base| v_ArrVal_13106) |c_ULTIMATE.start_main_~#__CS_cp_data1~0#1.base| v_ArrVal_13107) |c_ULTIMATE.start_main_~#__CS_cp_data2~0#1.base| v_ArrVal_13105) |c_~#__CS_thread_status~0.base| v_ArrVal_13124) |c_~#__CS_thread_lockedon~0.base| v_ArrVal_13126) |c_~#ma~0.base| v_ArrVal_13112) |c_~#mb~0.base| v_ArrVal_13119) |c_~#data1~0.base| v_ArrVal_13116) |c_~#data2~0.base| v_ArrVal_13113) |c_~#__CS_thread_born_round~0.base| v_ArrVal_13121) |c_~#__CS_thread_status~0.base| v_ArrVal_13123) |c_~#__CS_thread_allocated~0.base|) (+ 2 |c_~#__CS_thread_allocated~0.offset|)) 256) 1))) is different from false [2022-11-02 20:57:52,548 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 70 trivial. 48 not checked. [2022-11-02 20:57:52,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14207871] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:57:52,548 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:57:52,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 15] total 32 [2022-11-02 20:57:52,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316173386] [2022-11-02 20:57:52,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:57:52,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 20:57:52,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:57:52,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 20:57:52,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=421, Unknown=9, NotChecked=450, Total=992 [2022-11-02 20:57:52,550 INFO L87 Difference]: Start difference. First operand 901 states and 1412 transitions. Second operand has 32 states, 32 states have (on average 5.46875) internal successors, (175), 28 states have internal predecessors, (175), 8 states have call successors, (27), 9 states have call predecessors, (27), 6 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2022-11-02 20:57:54,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:57:58,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:57:58,656 INFO L93 Difference]: Finished difference Result 2059 states and 3135 transitions. [2022-11-02 20:57:58,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-02 20:57:58,657 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.46875) internal successors, (175), 28 states have internal predecessors, (175), 8 states have call successors, (27), 9 states have call predecessors, (27), 6 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 129 [2022-11-02 20:57:58,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:57:58,668 INFO L225 Difference]: With dead ends: 2059 [2022-11-02 20:57:58,668 INFO L226 Difference]: Without dead ends: 1465 [2022-11-02 20:57:58,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 268 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 380 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=375, Invalid=1458, Unknown=9, NotChecked=810, Total=2652 [2022-11-02 20:57:58,674 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 621 mSDsluCounter, 1353 mSDsCounter, 0 mSdLazyCounter, 2083 mSolverCounterSat, 537 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 6775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 2083 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 4154 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:57:58,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1625 Invalid, 6775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [537 Valid, 2083 Invalid, 1 Unknown, 4154 Unchecked, 4.9s Time] [2022-11-02 20:57:58,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1465 states. [2022-11-02 20:57:58,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1465 to 1374. [2022-11-02 20:57:58,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1374 states, 989 states have (on average 1.2527805864509605) internal successors, (1239), 881 states have internal predecessors, (1239), 273 states have call successors, (273), 51 states have call predecessors, (273), 111 states have return successors, (639), 441 states have call predecessors, (639), 273 states have call successors, (639) [2022-11-02 20:57:58,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 2151 transitions. [2022-11-02 20:57:58,811 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 2151 transitions. Word has length 129 [2022-11-02 20:57:58,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:57:58,811 INFO L495 AbstractCegarLoop]: Abstraction has 1374 states and 2151 transitions. [2022-11-02 20:57:58,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.46875) internal successors, (175), 28 states have internal predecessors, (175), 8 states have call successors, (27), 9 states have call predecessors, (27), 6 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2022-11-02 20:57:58,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 2151 transitions. [2022-11-02 20:57:58,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-02 20:57:58,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:57:58,818 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:57:58,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:57:59,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:57:59,046 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:57:59,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:57:59,047 INFO L85 PathProgramCache]: Analyzing trace with hash 869613734, now seen corresponding path program 1 times [2022-11-02 20:57:59,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:57:59,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918340214] [2022-11-02 20:57:59,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:57:59,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:14,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 20:58:14,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:14,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:58:14,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:14,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-02 20:58:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:14,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:58:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:14,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:58:14,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:14,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:58:14,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:14,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-02 20:58:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:15,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:58:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:15,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 20:58:15,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:15,021 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-02 20:58:15,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:15,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918340214] [2022-11-02 20:58:15,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918340214] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:15,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683327989] [2022-11-02 20:58:15,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:15,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:15,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:15,023 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:15,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:58:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:16,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 2352 conjuncts, 111 conjunts are in the unsatisfiable core [2022-11-02 20:58:16,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:16,731 INFO L356 Elim1Store]: treesize reduction 120, result has 25.5 percent of original size [2022-11-02 20:58:16,732 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 1 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 20 case distinctions, treesize of input 88 treesize of output 114 [2022-11-02 20:58:17,355 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-02 20:58:17,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-02 20:58:18,184 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 31 [2022-11-02 20:58:18,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 20:58:18,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:18,881 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-02 20:58:18,894 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 18 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 28 [2022-11-02 20:58:19,805 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-02 20:58:20,297 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-02 20:58:20,797 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-02 20:58:21,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:21,205 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-02 20:58:21,220 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 28 [2022-11-02 20:58:21,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:21,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:21,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:21,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:21,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:21,342 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:21,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:21,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:21,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:21,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:21,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:21,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:21,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:21,354 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:21,584 INFO L356 Elim1Store]: treesize reduction 315, result has 24.1 percent of original size [2022-11-02 20:58:21,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 120 [2022-11-02 20:58:21,590 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20 [2022-11-02 20:58:21,755 INFO L390 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 9 treesize of output 3 [2022-11-02 20:58:21,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:58:21,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 20:58:22,001 INFO L390 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 7 [2022-11-02 20:58:22,030 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 33 proven. 35 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-02 20:58:22,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:22,226 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_15234 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_~#__CS_thread_status~0.base| v_ArrVal_15234) |c_~#__CS_thread_allocated~0.base|) (+ 2 |c_~#__CS_thread_allocated~0.offset|)) 256) 1))) is different from false [2022-11-02 20:58:22,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683327989] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:22,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:58:22,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2022-11-02 20:58:22,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863944921] [2022-11-02 20:58:22,253 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:22,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 20:58:22,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:22,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 20:58:22,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=459, Unknown=1, NotChecked=44, Total=600 [2022-11-02 20:58:22,254 INFO L87 Difference]: Start difference. First operand 1374 states and 2151 transitions. Second operand has 22 states, 21 states have (on average 6.809523809523809) internal successors, (143), 17 states have internal predecessors, (143), 6 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-02 20:58:24,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:26,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:27,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:29,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:31,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:33,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:35,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:37,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:41,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:43,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:44,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:46,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:49,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:58:54,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:58:54,558 INFO L93 Difference]: Finished difference Result 3178 states and 4839 transitions. [2022-11-02 20:58:54,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-02 20:58:54,559 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 6.809523809523809) internal successors, (143), 17 states have internal predecessors, (143), 6 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) Word has length 129 [2022-11-02 20:58:54,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:58:54,574 INFO L225 Difference]: With dead ends: 3178 [2022-11-02 20:58:54,574 INFO L226 Difference]: Without dead ends: 1814 [2022-11-02 20:58:54,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1262 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=994, Invalid=3979, Unknown=1, NotChecked=138, Total=5112 [2022-11-02 20:58:54,584 INFO L413 NwaCegarLoop]: 232 mSDtfsCounter, 892 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 1673 mSolverCounterSat, 694 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 694 IncrementalHoareTripleChecker+Valid, 1673 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:58:54,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 919 Invalid, 2376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [694 Valid, 1673 Invalid, 9 Unknown, 0 Unchecked, 28.6s Time] [2022-11-02 20:58:54,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1814 states. [2022-11-02 20:58:54,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1814 to 1631. [2022-11-02 20:58:54,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1169 states have (on average 1.2189905902480753) internal successors, (1425), 1064 states have internal predecessors, (1425), 316 states have call successors, (316), 82 states have call predecessors, (316), 145 states have return successors, (793), 484 states have call predecessors, (793), 316 states have call successors, (793) [2022-11-02 20:58:54,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2534 transitions. [2022-11-02 20:58:54,795 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2534 transitions. Word has length 129 [2022-11-02 20:58:54,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:58:54,795 INFO L495 AbstractCegarLoop]: Abstraction has 1631 states and 2534 transitions. [2022-11-02 20:58:54,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.809523809523809) internal successors, (143), 17 states have internal predecessors, (143), 6 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-02 20:58:54,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2534 transitions. [2022-11-02 20:58:54,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-02 20:58:54,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:58:54,802 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:58:54,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:58:55,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:58:55,030 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:58:55,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:58:55,031 INFO L85 PathProgramCache]: Analyzing trace with hash 461891152, now seen corresponding path program 1 times [2022-11-02 20:58:55,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:58:55,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600023546] [2022-11-02 20:58:55,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:55,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:58:55,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:55,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-02 20:58:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:55,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:58:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:55,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-02 20:58:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:58:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:58:56,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:58:56,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-02 20:58:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:58:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 20:58:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:56,088 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-11-02 20:58:56,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:58:56,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600023546] [2022-11-02 20:58:56,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600023546] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:58:56,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026437285] [2022-11-02 20:58:56,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:58:56,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:58:56,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:58:56,093 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:58:56,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:58:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:58:57,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 2346 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:58:57,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:58:57,581 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-02 20:58:57,626 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-02 20:58:57,720 INFO L390 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 11 treesize of output 7 [2022-11-02 20:58:57,723 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-11-02 20:58:57,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:58:57,775 INFO L390 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 12 treesize of output 8 [2022-11-02 20:58:57,940 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-11-02 20:58:57,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026437285] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:58:57,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:58:57,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-11-02 20:58:57,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952355711] [2022-11-02 20:58:57,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:58:57,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:58:57,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:58:57,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:58:57,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:58:57,942 INFO L87 Difference]: Start difference. First operand 1631 states and 2534 transitions. Second operand has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 10 states have internal predecessors, (130), 8 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (21), 9 states have call predecessors, (21), 8 states have call successors, (21) [2022-11-02 20:58:59,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:59:02,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:02,414 INFO L93 Difference]: Finished difference Result 2746 states and 4172 transitions. [2022-11-02 20:59:02,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:59:02,415 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 10 states have internal predecessors, (130), 8 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (21), 9 states have call predecessors, (21), 8 states have call successors, (21) Word has length 129 [2022-11-02 20:59:02,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:02,427 INFO L225 Difference]: With dead ends: 2746 [2022-11-02 20:59:02,427 INFO L226 Difference]: Without dead ends: 1378 [2022-11-02 20:59:02,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=247, Invalid=623, Unknown=0, NotChecked=0, Total=870 [2022-11-02 20:59:02,436 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 1014 mSDsluCounter, 977 mSDsCounter, 0 mSdLazyCounter, 1355 mSolverCounterSat, 895 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 2251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 895 IncrementalHoareTripleChecker+Valid, 1355 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:02,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 1222 Invalid, 2251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [895 Valid, 1355 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2022-11-02 20:59:02,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2022-11-02 20:59:02,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1246. [2022-11-02 20:59:02,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1246 states, 916 states have (on average 1.2096069868995634) internal successors, (1108), 826 states have internal predecessors, (1108), 220 states have call successors, (220), 59 states have call predecessors, (220), 109 states have return successors, (509), 360 states have call predecessors, (509), 220 states have call successors, (509) [2022-11-02 20:59:02,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1837 transitions. [2022-11-02 20:59:02,588 INFO L78 Accepts]: Start accepts. Automaton has 1246 states and 1837 transitions. Word has length 129 [2022-11-02 20:59:02,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:02,589 INFO L495 AbstractCegarLoop]: Abstraction has 1246 states and 1837 transitions. [2022-11-02 20:59:02,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.285714285714286) internal successors, (130), 10 states have internal predecessors, (130), 8 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (21), 9 states have call predecessors, (21), 8 states have call successors, (21) [2022-11-02 20:59:02,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1246 states and 1837 transitions. [2022-11-02 20:59:02,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-02 20:59:02,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:02,594 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:02,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:02,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:02,810 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:02,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:02,811 INFO L85 PathProgramCache]: Analyzing trace with hash 2122525934, now seen corresponding path program 1 times [2022-11-02 20:59:02,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:02,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216453896] [2022-11-02 20:59:02,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:02,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:59:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:03,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-02 20:59:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:03,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:59:03,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:03,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-02 20:59:03,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:03,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:59:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:03,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-02 20:59:03,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:03,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:59:03,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:03,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-02 20:59:03,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:03,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-02 20:59:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:03,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-02 20:59:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:03,468 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 58 proven. 29 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-02 20:59:03,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:59:03,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216453896] [2022-11-02 20:59:03,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216453896] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:59:03,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835782886] [2022-11-02 20:59:03,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:03,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:59:03,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:03,470 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:59:03,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:59:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:59:05,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 2518 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:59:05,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:59:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-02 20:59:05,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:59:05,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835782886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:59:05,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:59:05,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-11-02 20:59:05,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885309813] [2022-11-02 20:59:05,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:59:05,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:59:05,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:59:05,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:59:05,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:59:05,046 INFO L87 Difference]: Start difference. First operand 1246 states and 1837 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-02 20:59:05,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:59:05,219 INFO L93 Difference]: Finished difference Result 2264 states and 3328 transitions. [2022-11-02 20:59:05,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:59:05,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 139 [2022-11-02 20:59:05,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:59:05,228 INFO L225 Difference]: With dead ends: 2264 [2022-11-02 20:59:05,228 INFO L226 Difference]: Without dead ends: 1153 [2022-11-02 20:59:05,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:59:05,234 INFO L413 NwaCegarLoop]: 243 mSDtfsCounter, 82 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 637 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:59:05,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 637 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:59:05,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2022-11-02 20:59:05,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1153. [2022-11-02 20:59:05,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 846 states have (on average 1.2115839243498818) internal successors, (1025), 761 states have internal predecessors, (1025), 205 states have call successors, (205), 53 states have call predecessors, (205), 101 states have return successors, (457), 338 states have call predecessors, (457), 205 states have call successors, (457) [2022-11-02 20:59:05,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1687 transitions. [2022-11-02 20:59:05,372 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1687 transitions. Word has length 139 [2022-11-02 20:59:05,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:59:05,373 INFO L495 AbstractCegarLoop]: Abstraction has 1153 states and 1687 transitions. [2022-11-02 20:59:05,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-02 20:59:05,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1687 transitions. [2022-11-02 20:59:05,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-02 20:59:05,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:59:05,377 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:59:05,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:59:05,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53d6d331-6a2a-47f0-b082-4a8aec0be3d5/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:59:05,597 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:59:05,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:59:05,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2099608720, now seen corresponding path program 2 times [2022-11-02 20:59:05,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:59:05,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227434247] [2022-11-02 20:59:05,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:59:05,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms