./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-pthread/cs_sync.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-pthread/cs_sync.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 459cf049271151c452003a0973bcdcc76c918d5759d842702be03de8528f67ef --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:35:46,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:35:46,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:35:46,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:35:46,769 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:35:46,771 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:35:46,773 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:35:46,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:35:46,778 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:35:46,779 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:35:46,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:35:46,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:35:46,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:35:46,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:35:46,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:35:46,788 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:35:46,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:35:46,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:35:46,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:35:46,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:35:46,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:35:46,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:35:46,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:35:46,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:35:46,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:35:46,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:35:46,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:35:46,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:35:46,810 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:35:46,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:35:46,811 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:35:46,817 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:35:46,819 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:35:46,820 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:35:46,822 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:35:46,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:35:46,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:35:46,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:35:46,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:35:46,827 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:35:46,828 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:35:46,829 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 13:35:46,882 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:35:46,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:35:46,883 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:35:46,884 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:35:46,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:35:46,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:35:46,886 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:35:46,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:35:46,887 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 13:35:46,887 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:35:46,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 13:35:46,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:35:46,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:35:46,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:35:46,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:35:46,890 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 13:35:46,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:35:46,890 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:35:46,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:35:46,891 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:35:46,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:35:46,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:35:46,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:35:46,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:35:46,892 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:35:46,892 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:35:46,893 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:35:46,893 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:35:46,893 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:35:46,895 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:35:46,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:35:46,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:35:46,897 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_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 459cf049271151c452003a0973bcdcc76c918d5759d842702be03de8528f67ef [2021-11-23 13:35:47,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:35:47,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:35:47,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:35:47,227 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:35:47,228 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:35:47,229 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/seq-pthread/cs_sync.i [2021-11-23 13:35:47,307 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/data/8190098b0/4ebdc52a8539454385822117dcc8b5b7/FLAGe11f13cfe [2021-11-23 13:35:47,910 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:35:47,911 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/sv-benchmarks/c/seq-pthread/cs_sync.i [2021-11-23 13:35:47,932 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/data/8190098b0/4ebdc52a8539454385822117dcc8b5b7/FLAGe11f13cfe [2021-11-23 13:35:48,159 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/data/8190098b0/4ebdc52a8539454385822117dcc8b5b7 [2021-11-23 13:35:48,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:35:48,163 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:35:48,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:35:48,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:35:48,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:35:48,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:35:48" (1/1) ... [2021-11-23 13:35:48,172 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e998a07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:48, skipping insertion in model container [2021-11-23 13:35:48,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:35:48" (1/1) ... [2021-11-23 13:35:48,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:35:48,251 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:35:48,820 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_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/sv-benchmarks/c/seq-pthread/cs_sync.i[34698,34711] [2021-11-23 13:35:48,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:35:48,959 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:35:48,995 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_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/sv-benchmarks/c/seq-pthread/cs_sync.i[34698,34711] [2021-11-23 13:35:49,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:35:49,119 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:35:49,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:49 WrapperNode [2021-11-23 13:35:49,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:35:49,122 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:35:49,122 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:35:49,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:35:49,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:49" (1/1) ... [2021-11-23 13:35:49,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:49" (1/1) ... [2021-11-23 13:35:49,359 INFO L137 Inliner]: procedures = 245, calls = 244, calls flagged for inlining = 65, calls inlined = 328, statements flattened = 3550 [2021-11-23 13:35:49,360 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:35:49,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:35:49,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:35:49,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:35:49,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:49" (1/1) ... [2021-11-23 13:35:49,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:49" (1/1) ... [2021-11-23 13:35:49,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:49" (1/1) ... [2021-11-23 13:35:49,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:49" (1/1) ... [2021-11-23 13:35:49,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:49" (1/1) ... [2021-11-23 13:35:49,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:49" (1/1) ... [2021-11-23 13:35:49,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:49" (1/1) ... [2021-11-23 13:35:49,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:35:49,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:35:49,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:35:49,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:35:49,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:49" (1/1) ... [2021-11-23 13:35:49,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:35:49,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:49,674 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:35:49,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:35:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:35:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 13:35:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:35:49,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 13:35:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:35:49,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 13:35:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:35:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 13:35:49,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:35:49,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:35:49,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:35:50,053 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:35:50,055 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:35:50,076 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 13:35:50,077 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 13:35:50,104 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 13:35:50,108 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 13:35:50,125 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 13:35:50,126 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-23 13:35:54,570 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L798-10: assume { :end_inline___CS_cs } true; [2021-11-23 13:35:54,572 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L798-11: assume { :end_inline___CS_cs } true; [2021-11-23 13:35:54,573 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L798-12: assume { :end_inline___CS_cs } true; [2021-11-23 13:35:54,573 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-22: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;call __CS_cs_#t~mem32#1.base, __CS_cs_#t~mem32#1.offset := read~$Pointer$(~#__CS_thread_lockedon~0.base, ~#__CS_thread_lockedon~0.offset + 12 * (__CS_cs_~k~0#1 % 256) + 4 * (~__CS_thread_index~0 % 256), 4);assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if __CS_cs_#t~mem32#1.base == 0 && __CS_cs_#t~mem32#1.offset == 0 then 1 else 0);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; [2021-11-23 13:35:54,573 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-23: assume { :end_inline_assume_abort_if_not } true;havoc __CS_cs_#t~mem32#1.base, __CS_cs_#t~mem32#1.offset;assume -2147483648 <= __CS_cs_#t~nondet33#1 && __CS_cs_#t~nondet33#1 <= 2147483647; [2021-11-23 13:35:54,574 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-24: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;call __CS_cs_#t~mem32#1.base, __CS_cs_#t~mem32#1.offset := read~$Pointer$(~#__CS_thread_lockedon~0.base, ~#__CS_thread_lockedon~0.offset + 12 * (__CS_cs_~k~0#1 % 256) + 4 * (~__CS_thread_index~0 % 256), 4);assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if __CS_cs_#t~mem32#1.base == 0 && __CS_cs_#t~mem32#1.offset == 0 then 1 else 0);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; [2021-11-23 13:35:54,574 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-25: assume { :end_inline_assume_abort_if_not } true;havoc __CS_cs_#t~mem32#1.base, __CS_cs_#t~mem32#1.offset;assume -2147483648 <= __CS_cs_#t~nondet33#1 && __CS_cs_#t~nondet33#1 <= 2147483647; [2021-11-23 13:35:54,574 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-26: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;call __CS_cs_#t~mem32#1.base, __CS_cs_#t~mem32#1.offset := read~$Pointer$(~#__CS_thread_lockedon~0.base, ~#__CS_thread_lockedon~0.offset + 12 * (__CS_cs_~k~0#1 % 256) + 4 * (~__CS_thread_index~0 % 256), 4);assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if __CS_cs_#t~mem32#1.base == 0 && __CS_cs_#t~mem32#1.offset == 0 then 1 else 0);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; [2021-11-23 13:35:54,574 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-27: assume { :end_inline_assume_abort_if_not } true;havoc __CS_cs_#t~mem32#1.base, __CS_cs_#t~mem32#1.offset;assume -2147483648 <= __CS_cs_#t~nondet33#1 && __CS_cs_#t~nondet33#1 <= 2147483647; [2021-11-23 13:35:54,575 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L798-38: assume { :end_inline___CS_cs } true; [2021-11-23 13:35:54,575 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L798-39: assume { :end_inline___CS_cs } true; [2021-11-23 13:35:54,575 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L798-40: assume { :end_inline___CS_cs } true; [2021-11-23 13:35:54,575 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L798-66: assume { :end_inline___CS_cs } true; [2021-11-23 13:35:54,575 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L798-67: assume { :end_inline___CS_cs } true; [2021-11-23 13:35:54,576 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-44: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:35:54,576 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-44: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:35:54,576 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L798-68: assume { :end_inline___CS_cs } true; [2021-11-23 13:35:54,577 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-46: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:35:54,577 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-46: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:35:54,578 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-48: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:35:54,579 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-48: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:35:54,579 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-80: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;call __CS_cs_#t~mem32#1.base, __CS_cs_#t~mem32#1.offset := read~$Pointer$(~#__CS_thread_lockedon~0.base, ~#__CS_thread_lockedon~0.offset + 12 * (__CS_cs_~k~0#1 % 256) + 4 * (~__CS_thread_index~0 % 256), 4);assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if __CS_cs_#t~mem32#1.base == 0 && __CS_cs_#t~mem32#1.offset == 0 then 1 else 0);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; [2021-11-23 13:35:54,579 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-50: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:35:54,579 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-50: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:35:54,580 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-81: assume { :end_inline_assume_abort_if_not } true;havoc __CS_cs_#t~mem32#1.base, __CS_cs_#t~mem32#1.offset;assume -2147483648 <= __CS_cs_#t~nondet33#1 && __CS_cs_#t~nondet33#1 <= 2147483647; [2021-11-23 13:35:54,580 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-82: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;call __CS_cs_#t~mem32#1.base, __CS_cs_#t~mem32#1.offset := read~$Pointer$(~#__CS_thread_lockedon~0.base, ~#__CS_thread_lockedon~0.offset + 12 * (__CS_cs_~k~0#1 % 256) + 4 * (~__CS_thread_index~0 % 256), 4);assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if __CS_cs_#t~mem32#1.base == 0 && __CS_cs_#t~mem32#1.offset == 0 then 1 else 0);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; [2021-11-23 13:35:54,592 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-83: assume { :end_inline_assume_abort_if_not } true;havoc __CS_cs_#t~mem32#1.base, __CS_cs_#t~mem32#1.offset;assume -2147483648 <= __CS_cs_#t~nondet33#1 && __CS_cs_#t~nondet33#1 <= 2147483647; [2021-11-23 13:35:54,592 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-84: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;call __CS_cs_#t~mem32#1.base, __CS_cs_#t~mem32#1.offset := read~$Pointer$(~#__CS_thread_lockedon~0.base, ~#__CS_thread_lockedon~0.offset + 12 * (__CS_cs_~k~0#1 % 256) + 4 * (~__CS_thread_index~0 % 256), 4);assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if __CS_cs_#t~mem32#1.base == 0 && __CS_cs_#t~mem32#1.offset == 0 then 1 else 0);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; [2021-11-23 13:35:54,592 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-85: assume { :end_inline_assume_abort_if_not } true;havoc __CS_cs_#t~mem32#1.base, __CS_cs_#t~mem32#1.offset;assume -2147483648 <= __CS_cs_#t~nondet33#1 && __CS_cs_#t~nondet33#1 <= 2147483647; [2021-11-23 13:35:54,593 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-138: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;call __CS_cs_#t~mem32#1.base, __CS_cs_#t~mem32#1.offset := read~$Pointer$(~#__CS_thread_lockedon~0.base, ~#__CS_thread_lockedon~0.offset + 12 * (__CS_cs_~k~0#1 % 256) + 4 * (~__CS_thread_index~0 % 256), 4);assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if __CS_cs_#t~mem32#1.base == 0 && __CS_cs_#t~mem32#1.offset == 0 then 1 else 0);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; [2021-11-23 13:35:54,593 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-139: assume { :end_inline_assume_abort_if_not } true;havoc __CS_cs_#t~mem32#1.base, __CS_cs_#t~mem32#1.offset;assume -2147483648 <= __CS_cs_#t~nondet33#1 && __CS_cs_#t~nondet33#1 <= 2147483647; [2021-11-23 13:35:54,593 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-140: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;call __CS_cs_#t~mem32#1.base, __CS_cs_#t~mem32#1.offset := read~$Pointer$(~#__CS_thread_lockedon~0.base, ~#__CS_thread_lockedon~0.offset + 12 * (__CS_cs_~k~0#1 % 256) + 4 * (~__CS_thread_index~0 % 256), 4);assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if __CS_cs_#t~mem32#1.base == 0 && __CS_cs_#t~mem32#1.offset == 0 then 1 else 0);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; [2021-11-23 13:35:54,593 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-141: assume { :end_inline_assume_abort_if_not } true;havoc __CS_cs_#t~mem32#1.base, __CS_cs_#t~mem32#1.offset;assume -2147483648 <= __CS_cs_#t~nondet33#1 && __CS_cs_#t~nondet33#1 <= 2147483647; [2021-11-23 13:35:54,593 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-142: assume { :end_inline_assume_abort_if_not } true;~__CS_round~0 := ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256;call __CS_cs_#t~mem32#1.base, __CS_cs_#t~mem32#1.offset := read~$Pointer$(~#__CS_thread_lockedon~0.base, ~#__CS_thread_lockedon~0.offset + 12 * (__CS_cs_~k~0#1 % 256) + 4 * (~__CS_thread_index~0 % 256), 4);assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if __CS_cs_#t~mem32#1.base == 0 && __CS_cs_#t~mem32#1.offset == 0 then 1 else 0);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; [2021-11-23 13:35:54,593 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L5-143: assume { :end_inline_assume_abort_if_not } true;havoc __CS_cs_#t~mem32#1.base, __CS_cs_#t~mem32#1.offset;assume -2147483648 <= __CS_cs_#t~nondet33#1 && __CS_cs_#t~nondet33#1 <= 2147483647; [2021-11-23 13:35:54,594 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-156: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:35:54,594 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-156: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:35:54,594 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-158: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:35:54,594 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-158: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:35:54,594 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-160: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:35:54,594 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-160: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:35:54,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-162: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:35:54,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-162: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:35:54,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-30: assume 0 != __CS_cs_#t~nondet33#1 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite34#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 13:35:54,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-30: assume !(0 != __CS_cs_#t~nondet33#1 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite34#1 := ~__CS_ret~0 % 256; [2021-11-23 13:35:54,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-32: ~__CS_ret~0 := __CS_cs_#t~ite34#1;havoc __CS_cs_#t~nondet33#1;havoc __CS_cs_#t~ite34#1; [2021-11-23 13:35:54,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-33: assume 0 != __CS_cs_#t~nondet33#1 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite34#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 13:35:54,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-33: assume !(0 != __CS_cs_#t~nondet33#1 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite34#1 := ~__CS_ret~0 % 256; [2021-11-23 13:35:54,595 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-35: ~__CS_ret~0 := __CS_cs_#t~ite34#1;havoc __CS_cs_#t~nondet33#1;havoc __CS_cs_#t~ite34#1; [2021-11-23 13:35:54,596 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-36: assume 0 != __CS_cs_#t~nondet33#1 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite34#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 13:35:54,596 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-36: assume !(0 != __CS_cs_#t~nondet33#1 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite34#1 := ~__CS_ret~0 % 256; [2021-11-23 13:35:54,596 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-38: ~__CS_ret~0 := __CS_cs_#t~ite34#1;havoc __CS_cs_#t~nondet33#1;havoc __CS_cs_#t~ite34#1; [2021-11-23 13:35:54,596 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-268: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:35:54,596 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-268: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:35:54,596 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-270: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:35:54,596 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-270: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:35:54,596 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-272: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:35:54,596 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-272: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:35:54,596 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-274: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:35:54,597 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L6-274: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:35:54,597 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-114: assume 0 != __CS_cs_#t~nondet33#1 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite34#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 13:35:54,597 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-114: assume !(0 != __CS_cs_#t~nondet33#1 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite34#1 := ~__CS_ret~0 % 256; [2021-11-23 13:35:54,597 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-116: ~__CS_ret~0 := __CS_cs_#t~ite34#1;havoc __CS_cs_#t~nondet33#1;havoc __CS_cs_#t~ite34#1; [2021-11-23 13:35:54,597 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-117: assume 0 != __CS_cs_#t~nondet33#1 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite34#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 13:35:54,597 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-117: assume !(0 != __CS_cs_#t~nondet33#1 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite34#1 := ~__CS_ret~0 % 256; [2021-11-23 13:35:54,597 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-119: ~__CS_ret~0 := __CS_cs_#t~ite34#1;havoc __CS_cs_#t~nondet33#1;havoc __CS_cs_#t~ite34#1; [2021-11-23 13:35:54,597 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-120: assume 0 != __CS_cs_#t~nondet33#1 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite34#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 13:35:54,597 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-120: assume !(0 != __CS_cs_#t~nondet33#1 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite34#1 := ~__CS_ret~0 % 256; [2021-11-23 13:35:54,597 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-122: ~__CS_ret~0 := __CS_cs_#t~ite34#1;havoc __CS_cs_#t~nondet33#1;havoc __CS_cs_#t~ite34#1; [2021-11-23 13:35:54,598 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-198: assume 0 != __CS_cs_#t~nondet33#1 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite34#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 13:35:54,598 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-198: assume !(0 != __CS_cs_#t~nondet33#1 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite34#1 := ~__CS_ret~0 % 256; [2021-11-23 13:35:54,598 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-200: ~__CS_ret~0 := __CS_cs_#t~ite34#1;havoc __CS_cs_#t~nondet33#1;havoc __CS_cs_#t~ite34#1; [2021-11-23 13:35:54,598 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-201: assume 0 != __CS_cs_#t~nondet33#1 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite34#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 13:35:54,598 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-201: assume !(0 != __CS_cs_#t~nondet33#1 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite34#1 := ~__CS_ret~0 % 256; [2021-11-23 13:35:54,598 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-203: ~__CS_ret~0 := __CS_cs_#t~ite34#1;havoc __CS_cs_#t~nondet33#1;havoc __CS_cs_#t~ite34#1; [2021-11-23 13:35:54,599 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-204: assume 0 != __CS_cs_#t~nondet33#1 && 1 == ~__CS_round~0 % 256;__CS_cs_#t~ite34#1 := ~__CS_ret_PREEMPTED~0 % 256; [2021-11-23 13:35:54,599 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-204: assume !(0 != __CS_cs_#t~nondet33#1 && 1 == ~__CS_round~0 % 256);__CS_cs_#t~ite34#1 := ~__CS_ret~0 % 256; [2021-11-23 13:35:54,599 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L804-206: ~__CS_ret~0 := __CS_cs_#t~ite34#1;havoc __CS_cs_#t~nondet33#1;havoc __CS_cs_#t~ite34#1; [2021-11-23 13:35:54,599 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##816: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:35:54,599 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##817: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:35:54,599 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##826: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:35:54,599 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##825: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:35:54,600 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L987: 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; [2021-11-23 13:35:54,600 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L987: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 13:35:54,600 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L987-2: 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; [2021-11-23 13:35:54,600 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L987-2: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 13:35:54,600 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L987-4: 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; [2021-11-23 13:35:54,600 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L987-4: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 13:35:54,601 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L989: 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; [2021-11-23 13:35:54,601 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L989: assume !(0 != ~__CS_ret~0 % 256);assume { :begin_inline___CS_cs } true;havoc __CS_cs_#t~nondet31#1, __CS_cs_#t~mem32#1.base, __CS_cs_#t~mem32#1.offset, __CS_cs_#t~nondet33#1, __CS_cs_#t~ite34#1, __CS_cs_~k~0#1;__CS_cs_~k~0#1 := __CS_cs_#t~nondet31#1;havoc __CS_cs_#t~nondet31#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2 then 1 else 0);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; [2021-11-23 13:35:54,601 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L989-2: 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; [2021-11-23 13:35:54,601 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L989-2: assume !(0 != ~__CS_ret~0 % 256);assume { :begin_inline___CS_cs } true;havoc __CS_cs_#t~nondet31#1, __CS_cs_#t~mem32#1.base, __CS_cs_#t~mem32#1.offset, __CS_cs_#t~nondet33#1, __CS_cs_#t~ite34#1, __CS_cs_~k~0#1;__CS_cs_~k~0#1 := __CS_cs_#t~nondet31#1;havoc __CS_cs_#t~nondet31#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2 then 1 else 0);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; [2021-11-23 13:35:54,601 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L989-4: 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; [2021-11-23 13:35:54,602 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L989-4: assume !(0 != ~__CS_ret~0 % 256);assume { :begin_inline___CS_cs } true;havoc __CS_cs_#t~nondet31#1, __CS_cs_#t~mem32#1.base, __CS_cs_#t~mem32#1.offset, __CS_cs_#t~nondet33#1, __CS_cs_#t~ite34#1, __CS_cs_~k~0#1;__CS_cs_~k~0#1 := __CS_cs_#t~nondet31#1;havoc __CS_cs_#t~nondet31#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if ~__CS_round~0 % 256 + __CS_cs_~k~0#1 % 256 < 2 then 1 else 0);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; [2021-11-23 13:35:54,602 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L991: 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; [2021-11-23 13:35:54,602 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L991: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 13:35:54,602 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L991-2: 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; [2021-11-23 13:35:54,602 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L991-2: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 13:35:54,603 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L991-4: 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; [2021-11-23 13:35:54,603 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L991-4: assume !(0 != ~__CS_ret~0 % 256); [2021-11-23 13:35:54,603 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##476: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:35:54,603 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##475: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:35:54,603 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##485: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:35:54,603 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##484: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:35:54,604 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##135: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:35:54,604 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##134: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:35:54,604 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##144: assume !(0 == assume_abort_if_not_~cond#1); [2021-11-23 13:35:54,604 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##143: assume 0 == assume_abort_if_not_~cond#1;assume false; [2021-11-23 13:35:54,604 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:35:54,621 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:35:54,622 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-11-23 13:35:54,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:35:54 BoogieIcfgContainer [2021-11-23 13:35:54,626 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:35:54,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:35:54,628 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:35:54,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:35:54,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:35:48" (1/3) ... [2021-11-23 13:35:54,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ccabeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:35:54, skipping insertion in model container [2021-11-23 13:35:54,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:35:49" (2/3) ... [2021-11-23 13:35:54,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ccabeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:35:54, skipping insertion in model container [2021-11-23 13:35:54,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:35:54" (3/3) ... [2021-11-23 13:35:54,635 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_sync.i [2021-11-23 13:35:54,641 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:35:54,641 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 13:35:54,719 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:35:54,730 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 13:35:54,730 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 13:35:54,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 838 states, 836 states have (on average 1.5035885167464116) internal successors, (1257), 837 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:54,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-23 13:35:54,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:54,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:54,791 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:35:54,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:54,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1051334723, now seen corresponding path program 1 times [2021-11-23 13:35:54,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:54,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023217763] [2021-11-23 13:35:54,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:54,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:55,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:55,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:55,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023217763] [2021-11-23 13:35:55,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023217763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:55,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:55,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:35:55,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073906309] [2021-11-23 13:35:55,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:55,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:35:55,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:55,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:35:55,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:35:55,202 INFO L87 Difference]: Start difference. First operand has 838 states, 836 states have (on average 1.5035885167464116) internal successors, (1257), 837 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 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) [2021-11-23 13:35:55,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:55,393 INFO L93 Difference]: Finished difference Result 1678 states and 2520 transitions. [2021-11-23 13:35:55,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:35:55,396 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 [2021-11-23 13:35:55,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:55,415 INFO L225 Difference]: With dead ends: 1678 [2021-11-23 13:35:55,415 INFO L226 Difference]: Without dead ends: 838 [2021-11-23 13:35:55,423 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:35:55,426 INFO L933 BasicCegarLoop]: 1073 mSDtfsCounter, 4 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2144 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:55,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2144 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:35:55,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2021-11-23 13:35:55,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 835. [2021-11-23 13:35:55,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 834 states have (on average 1.2865707434052758) internal successors, (1073), 834 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:55,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 1073 transitions. [2021-11-23 13:35:55,511 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 1073 transitions. Word has length 32 [2021-11-23 13:35:55,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:55,512 INFO L470 AbstractCegarLoop]: Abstraction has 835 states and 1073 transitions. [2021-11-23 13:35:55,512 INFO L471 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) [2021-11-23 13:35:55,512 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 1073 transitions. [2021-11-23 13:35:55,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-23 13:35:55,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:55,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:55,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:35:55,517 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:35:55,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:55,518 INFO L85 PathProgramCache]: Analyzing trace with hash -846487457, now seen corresponding path program 1 times [2021-11-23 13:35:55,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:55,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428023817] [2021-11-23 13:35:55,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:55,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:55,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:55,663 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:55,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:55,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428023817] [2021-11-23 13:35:55,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428023817] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:55,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:35:55,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:35:55,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975458745] [2021-11-23 13:35:55,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:55,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:35:55,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:55,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:35:55,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:35:55,668 INFO L87 Difference]: Start difference. First operand 835 states and 1073 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:55,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:55,726 INFO L93 Difference]: Finished difference Result 1669 states and 2146 transitions. [2021-11-23 13:35:55,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:35:55,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-23 13:35:55,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:55,733 INFO L225 Difference]: With dead ends: 1669 [2021-11-23 13:35:55,734 INFO L226 Difference]: Without dead ends: 837 [2021-11-23 13:35:55,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:35:55,744 INFO L933 BasicCegarLoop]: 1070 mSDtfsCounter, 1 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:55,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 2137 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:35:55,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2021-11-23 13:35:55,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 836. [2021-11-23 13:35:55,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 835 states have (on average 1.2862275449101797) internal successors, (1074), 835 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:55,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1074 transitions. [2021-11-23 13:35:55,786 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1074 transitions. Word has length 35 [2021-11-23 13:35:55,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:55,788 INFO L470 AbstractCegarLoop]: Abstraction has 836 states and 1074 transitions. [2021-11-23 13:35:55,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:55,790 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1074 transitions. [2021-11-23 13:35:55,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-23 13:35:55,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:55,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:55,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 13:35:55,802 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:35:55,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:55,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1677626593, now seen corresponding path program 1 times [2021-11-23 13:35:55,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:55,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255018487] [2021-11-23 13:35:55,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:55,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:55,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:55,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:55,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255018487] [2021-11-23 13:35:55,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255018487] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:35:55,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223376856] [2021-11-23 13:35:55,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:55,917 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:35:55,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:55,919 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:35:55,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 13:35:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:56,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:35:56,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:56,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:56,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:35:56,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223376856] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:35:56,357 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:35:56,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-11-23 13:35:56,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926625133] [2021-11-23 13:35:56,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:35:56,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:35:56,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:56,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:35:56,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:35:56,365 INFO L87 Difference]: Start difference. First operand 836 states and 1074 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:56,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:56,430 INFO L93 Difference]: Finished difference Result 1673 states and 2151 transitions. [2021-11-23 13:35:56,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:35:56,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-23 13:35:56,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:56,438 INFO L225 Difference]: With dead ends: 1673 [2021-11-23 13:35:56,438 INFO L226 Difference]: Without dead ends: 840 [2021-11-23 13:35:56,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:35:56,443 INFO L933 BasicCegarLoop]: 1070 mSDtfsCounter, 3 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2137 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:56,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2137 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:35:56,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-11-23 13:35:56,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 840. [2021-11-23 13:35:56,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 840 states, 839 states have (on average 1.2848629320619784) internal successors, (1078), 839 states have internal predecessors, (1078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:56,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 840 states to 840 states and 1078 transitions. [2021-11-23 13:35:56,493 INFO L78 Accepts]: Start accepts. Automaton has 840 states and 1078 transitions. Word has length 37 [2021-11-23 13:35:56,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:56,493 INFO L470 AbstractCegarLoop]: Abstraction has 840 states and 1078 transitions. [2021-11-23 13:35:56,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:56,494 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states and 1078 transitions. [2021-11-23 13:35:56,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-23 13:35:56,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:56,496 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:35:56,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:56,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-23 13:35:56,725 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:35:56,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:56,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1001208933, now seen corresponding path program 2 times [2021-11-23 13:35:56,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:56,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765952299] [2021-11-23 13:35:56,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:56,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:56,813 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-23 13:35:56,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:56,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765952299] [2021-11-23 13:35:56,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765952299] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:35:56,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563178331] [2021-11-23 13:35:56,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 13:35:56,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:35:56,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:56,816 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:35:56,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 13:35:57,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-23 13:35:57,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 13:35:57,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:35:57,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:57,206 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-23 13:35:57,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:35:57,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563178331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:35:57,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 13:35:57,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-11-23 13:35:57,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589605222] [2021-11-23 13:35:57,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:35:57,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:35:57,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:57,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:35:57,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:35:57,215 INFO L87 Difference]: Start difference. First operand 840 states and 1078 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:57,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:57,339 INFO L93 Difference]: Finished difference Result 1557 states and 1998 transitions. [2021-11-23 13:35:57,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:35:57,340 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-23 13:35:57,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:57,348 INFO L225 Difference]: With dead ends: 1557 [2021-11-23 13:35:57,348 INFO L226 Difference]: Without dead ends: 1474 [2021-11-23 13:35:57,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:35:57,355 INFO L933 BasicCegarLoop]: 1413 mSDtfsCounter, 1009 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 3719 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:57,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1009 Valid, 3719 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:35:57,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-11-23 13:35:57,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1471. [2021-11-23 13:35:57,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1471 states, 1470 states have (on average 1.2748299319727892) internal successors, (1874), 1470 states have internal predecessors, (1874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:57,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1471 states to 1471 states and 1874 transitions. [2021-11-23 13:35:57,405 INFO L78 Accepts]: Start accepts. Automaton has 1471 states and 1874 transitions. Word has length 41 [2021-11-23 13:35:57,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:57,406 INFO L470 AbstractCegarLoop]: Abstraction has 1471 states and 1874 transitions. [2021-11-23 13:35:57,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:57,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1471 states and 1874 transitions. [2021-11-23 13:35:57,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-23 13:35:57,411 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:57,412 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 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] [2021-11-23 13:35:57,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:35:57,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:35:57,640 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:35:57,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:57,641 INFO L85 PathProgramCache]: Analyzing trace with hash -687944212, now seen corresponding path program 1 times [2021-11-23 13:35:57,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:57,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082828453] [2021-11-23 13:35:57,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:57,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:35:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:57,807 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-23 13:35:57,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:35:57,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082828453] [2021-11-23 13:35:57,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082828453] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:35:57,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070918041] [2021-11-23 13:35:57,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:57,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:35:57,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:35:57,812 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:35:57,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 13:35:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:35:58,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 13:35:58,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:35:58,229 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-23 13:35:58,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 13:35:58,441 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-23 13:35:58,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070918041] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 13:35:58,442 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 13:35:58,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-11-23 13:35:58,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660474880] [2021-11-23 13:35:58,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 13:35:58,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:35:58,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:35:58,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:35:58,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:35:58,444 INFO L87 Difference]: Start difference. First operand 1471 states and 1874 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:58,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:35:58,522 INFO L93 Difference]: Finished difference Result 2939 states and 3745 transitions. [2021-11-23 13:35:58,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:35:58,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-23 13:35:58,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:35:58,531 INFO L225 Difference]: With dead ends: 2939 [2021-11-23 13:35:58,531 INFO L226 Difference]: Without dead ends: 1480 [2021-11-23 13:35:58,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 172 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:35:58,534 INFO L933 BasicCegarLoop]: 1069 mSDtfsCounter, 8 mSDsluCounter, 2132 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3201 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:35:58,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 3201 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:35:58,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2021-11-23 13:35:58,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1480. [2021-11-23 13:35:58,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1480 states, 1479 states have (on average 1.2738336713995944) internal successors, (1884), 1479 states have internal predecessors, (1884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:58,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1480 states to 1480 states and 1884 transitions. [2021-11-23 13:35:58,572 INFO L78 Accepts]: Start accepts. Automaton has 1480 states and 1884 transitions. Word has length 87 [2021-11-23 13:35:58,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:35:58,572 INFO L470 AbstractCegarLoop]: Abstraction has 1480 states and 1884 transitions. [2021-11-23 13:35:58,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:35:58,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1480 states and 1884 transitions. [2021-11-23 13:35:58,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-23 13:35:58,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:35:58,576 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 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] [2021-11-23 13:35:58,612 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-23 13:35:58,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:35:58,792 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:35:58,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:35:58,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1799246202, now seen corresponding path program 2 times [2021-11-23 13:35:58,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:35:58,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374690284] [2021-11-23 13:35:58,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:35:58,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:01,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-23 13:36:03,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:36:03,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374690284] [2021-11-23 13:36:03,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374690284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:03,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:03,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:36:03,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565372698] [2021-11-23 13:36:03,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:03,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:36:03,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:36:03,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:36:03,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:36:03,317 INFO L87 Difference]: Start difference. First operand 1480 states and 1884 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:05,499 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:36:07,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:07,130 INFO L93 Difference]: Finished difference Result 2834 states and 3588 transitions. [2021-11-23 13:36:07,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:36:07,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-23 13:36:07,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:07,141 INFO L225 Difference]: With dead ends: 2834 [2021-11-23 13:36:07,141 INFO L226 Difference]: Without dead ends: 1803 [2021-11-23 13:36:07,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:36:07,144 INFO L933 BasicCegarLoop]: 1025 mSDtfsCounter, 262 mSDsluCounter, 3557 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 4582 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:07,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 4582 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 714 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-11-23 13:36:07,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2021-11-23 13:36:07,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1595. [2021-11-23 13:36:07,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1594 states have (on average 1.2728983688833124) internal successors, (2029), 1594 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:07,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 2029 transitions. [2021-11-23 13:36:07,195 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 2029 transitions. Word has length 96 [2021-11-23 13:36:07,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:07,196 INFO L470 AbstractCegarLoop]: Abstraction has 1595 states and 2029 transitions. [2021-11-23 13:36:07,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:07,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 2029 transitions. [2021-11-23 13:36:07,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-23 13:36:07,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:07,201 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 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] [2021-11-23 13:36:07,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:36:07,202 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:07,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:07,203 INFO L85 PathProgramCache]: Analyzing trace with hash -633378022, now seen corresponding path program 1 times [2021-11-23 13:36:07,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:07,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485267278] [2021-11-23 13:36:07,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:07,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:07,334 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-23 13:36:07,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:36:07,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485267278] [2021-11-23 13:36:07,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485267278] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:07,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:07,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:36:07,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127781134] [2021-11-23 13:36:07,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:07,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:36:07,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:36:07,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:36:07,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:36:07,337 INFO L87 Difference]: Start difference. First operand 1595 states and 2029 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:09,346 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:36:09,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:09,688 INFO L93 Difference]: Finished difference Result 2799 states and 3545 transitions. [2021-11-23 13:36:09,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:36:09,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-23 13:36:09,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:09,704 INFO L225 Difference]: With dead ends: 2799 [2021-11-23 13:36:09,704 INFO L226 Difference]: Without dead ends: 2432 [2021-11-23 13:36:09,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:36:09,707 INFO L933 BasicCegarLoop]: 1152 mSDtfsCounter, 958 mSDsluCounter, 1947 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 958 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:09,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [958 Valid, 3099 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2021-11-23 13:36:09,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2021-11-23 13:36:09,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2256. [2021-11-23 13:36:09,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2256 states, 2255 states have (on average 1.2798226164079822) internal successors, (2886), 2255 states have internal predecessors, (2886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:09,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2256 states to 2256 states and 2886 transitions. [2021-11-23 13:36:09,774 INFO L78 Accepts]: Start accepts. Automaton has 2256 states and 2886 transitions. Word has length 96 [2021-11-23 13:36:09,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:09,775 INFO L470 AbstractCegarLoop]: Abstraction has 2256 states and 2886 transitions. [2021-11-23 13:36:09,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:09,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2256 states and 2886 transitions. [2021-11-23 13:36:09,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-23 13:36:09,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:09,779 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 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] [2021-11-23 13:36:09,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 13:36:09,779 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:09,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:09,780 INFO L85 PathProgramCache]: Analyzing trace with hash -565982534, now seen corresponding path program 1 times [2021-11-23 13:36:09,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:09,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548359085] [2021-11-23 13:36:09,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:09,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:12,265 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-23 13:36:12,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:36:12,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548359085] [2021-11-23 13:36:12,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548359085] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:12,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:12,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:36:12,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049303656] [2021-11-23 13:36:12,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:12,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:36:12,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:36:12,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:36:12,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:36:12,268 INFO L87 Difference]: Start difference. First operand 2256 states and 2886 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:14,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:36:17,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:17,471 INFO L93 Difference]: Finished difference Result 3397 states and 4329 transitions. [2021-11-23 13:36:17,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:36:17,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-23 13:36:17,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:17,496 INFO L225 Difference]: With dead ends: 3397 [2021-11-23 13:36:17,496 INFO L226 Difference]: Without dead ends: 3125 [2021-11-23 13:36:17,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:36:17,499 INFO L933 BasicCegarLoop]: 1143 mSDtfsCounter, 1008 mSDsluCounter, 3459 mSDsCounter, 0 mSdLazyCounter, 1049 mSolverCounterSat, 59 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 4602 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1049 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:17,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1008 Valid, 4602 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1049 Invalid, 1 Unknown, 0 Unchecked, 4.8s Time] [2021-11-23 13:36:17,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2021-11-23 13:36:17,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 2813. [2021-11-23 13:36:17,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2813 states, 2812 states have (on average 1.2727596017069702) internal successors, (3579), 2812 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:17,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2813 states to 2813 states and 3579 transitions. [2021-11-23 13:36:17,620 INFO L78 Accepts]: Start accepts. Automaton has 2813 states and 3579 transitions. Word has length 96 [2021-11-23 13:36:17,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:17,621 INFO L470 AbstractCegarLoop]: Abstraction has 2813 states and 3579 transitions. [2021-11-23 13:36:17,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:17,622 INFO L276 IsEmpty]: Start isEmpty. Operand 2813 states and 3579 transitions. [2021-11-23 13:36:17,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-23 13:36:17,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:17,627 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 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] [2021-11-23 13:36:17,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 13:36:17,628 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:17,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:17,629 INFO L85 PathProgramCache]: Analyzing trace with hash -31024998, now seen corresponding path program 1 times [2021-11-23 13:36:17,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:17,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767420874] [2021-11-23 13:36:17,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:17,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:17,830 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-23 13:36:17,831 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:36:17,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767420874] [2021-11-23 13:36:17,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767420874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:17,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:17,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:36:17,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909261315] [2021-11-23 13:36:17,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:17,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:36:17,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:36:17,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:36:17,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:36:17,834 INFO L87 Difference]: Start difference. First operand 2813 states and 3579 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:18,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:18,117 INFO L93 Difference]: Finished difference Result 4586 states and 5797 transitions. [2021-11-23 13:36:18,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:36:18,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-23 13:36:18,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:18,135 INFO L225 Difference]: With dead ends: 4586 [2021-11-23 13:36:18,135 INFO L226 Difference]: Without dead ends: 2753 [2021-11-23 13:36:18,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:36:18,142 INFO L933 BasicCegarLoop]: 1057 mSDtfsCounter, 1496 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 2291 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:18,142 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1496 Valid, 2291 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:36:18,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2753 states. [2021-11-23 13:36:18,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2753 to 2525. [2021-11-23 13:36:18,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2525 states, 2524 states have (on average 1.2721870047543582) internal successors, (3211), 2524 states have internal predecessors, (3211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:18,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2525 states to 2525 states and 3211 transitions. [2021-11-23 13:36:18,279 INFO L78 Accepts]: Start accepts. Automaton has 2525 states and 3211 transitions. Word has length 96 [2021-11-23 13:36:18,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:18,279 INFO L470 AbstractCegarLoop]: Abstraction has 2525 states and 3211 transitions. [2021-11-23 13:36:18,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:18,280 INFO L276 IsEmpty]: Start isEmpty. Operand 2525 states and 3211 transitions. [2021-11-23 13:36:18,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-23 13:36:18,284 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:18,284 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 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] [2021-11-23 13:36:18,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 13:36:18,284 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:18,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:18,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1548605382, now seen corresponding path program 1 times [2021-11-23 13:36:18,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:18,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611802415] [2021-11-23 13:36:18,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:18,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:18,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:18,379 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-23 13:36:18,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:36:18,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611802415] [2021-11-23 13:36:18,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611802415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:18,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:18,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:36:18,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10361053] [2021-11-23 13:36:18,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:18,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:36:18,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:36:18,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:36:18,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:36:18,382 INFO L87 Difference]: Start difference. First operand 2525 states and 3211 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:18,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:18,650 INFO L93 Difference]: Finished difference Result 4201 states and 5306 transitions. [2021-11-23 13:36:18,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:36:18,653 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-23 13:36:18,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:18,666 INFO L225 Difference]: With dead ends: 4201 [2021-11-23 13:36:18,666 INFO L226 Difference]: Without dead ends: 2367 [2021-11-23 13:36:18,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:36:18,670 INFO L933 BasicCegarLoop]: 992 mSDtfsCounter, 1276 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1276 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:18,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1276 Valid, 2226 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:36:18,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2021-11-23 13:36:18,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 2144. [2021-11-23 13:36:18,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2144 states, 2143 states have (on average 1.271581894540364) internal successors, (2725), 2143 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:18,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2144 states to 2144 states and 2725 transitions. [2021-11-23 13:36:18,753 INFO L78 Accepts]: Start accepts. Automaton has 2144 states and 2725 transitions. Word has length 96 [2021-11-23 13:36:18,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:18,753 INFO L470 AbstractCegarLoop]: Abstraction has 2144 states and 2725 transitions. [2021-11-23 13:36:18,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:18,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2144 states and 2725 transitions. [2021-11-23 13:36:18,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-23 13:36:18,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:18,761 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:18,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 13:36:18,762 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:18,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:18,762 INFO L85 PathProgramCache]: Analyzing trace with hash -702368325, now seen corresponding path program 1 times [2021-11-23 13:36:18,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:18,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276482880] [2021-11-23 13:36:18,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:18,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:22,541 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-23 13:36:22,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:36:22,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276482880] [2021-11-23 13:36:22,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276482880] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:22,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:22,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:36:22,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968172391] [2021-11-23 13:36:22,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:22,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:36:22,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:36:22,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:36:22,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:36:22,544 INFO L87 Difference]: Start difference. First operand 2144 states and 2725 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:24,691 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:36:26,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:26,236 INFO L93 Difference]: Finished difference Result 3129 states and 3972 transitions. [2021-11-23 13:36:26,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:36:26,237 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-23 13:36:26,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:26,251 INFO L225 Difference]: With dead ends: 3129 [2021-11-23 13:36:26,252 INFO L226 Difference]: Without dead ends: 1882 [2021-11-23 13:36:26,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:36:26,255 INFO L933 BasicCegarLoop]: 859 mSDtfsCounter, 46 mSDsluCounter, 2701 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 3560 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:26,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 3560 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 744 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2021-11-23 13:36:26,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2021-11-23 13:36:26,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1882. [2021-11-23 13:36:26,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1882 states, 1881 states have (on average 1.2759170653907497) internal successors, (2400), 1881 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:26,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1882 states to 1882 states and 2400 transitions. [2021-11-23 13:36:26,320 INFO L78 Accepts]: Start accepts. Automaton has 1882 states and 2400 transitions. Word has length 117 [2021-11-23 13:36:26,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:26,321 INFO L470 AbstractCegarLoop]: Abstraction has 1882 states and 2400 transitions. [2021-11-23 13:36:26,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 5 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:26,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1882 states and 2400 transitions. [2021-11-23 13:36:26,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-23 13:36:26,326 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:26,326 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:26,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 13:36:26,327 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:26,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:26,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1029131895, now seen corresponding path program 1 times [2021-11-23 13:36:26,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:26,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182808117] [2021-11-23 13:36:26,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:26,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:26,488 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-23 13:36:26,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:36:26,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182808117] [2021-11-23 13:36:26,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182808117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:26,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:26,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:36:26,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63709773] [2021-11-23 13:36:26,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:26,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:36:26,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:36:26,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:36:26,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:36:26,491 INFO L87 Difference]: Start difference. First operand 1882 states and 2400 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:26,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:26,789 INFO L93 Difference]: Finished difference Result 3025 states and 3853 transitions. [2021-11-23 13:36:26,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:36:26,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 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 128 [2021-11-23 13:36:26,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:26,798 INFO L225 Difference]: With dead ends: 3025 [2021-11-23 13:36:26,798 INFO L226 Difference]: Without dead ends: 1221 [2021-11-23 13:36:26,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:36:26,801 INFO L933 BasicCegarLoop]: 866 mSDtfsCounter, 12 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:26,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1588 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:36:26,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2021-11-23 13:36:26,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1221. [2021-11-23 13:36:26,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 1220 states have (on average 1.2639344262295082) internal successors, (1542), 1220 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:26,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1542 transitions. [2021-11-23 13:36:26,837 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1542 transitions. Word has length 128 [2021-11-23 13:36:26,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:26,838 INFO L470 AbstractCegarLoop]: Abstraction has 1221 states and 1542 transitions. [2021-11-23 13:36:26,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:26,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1542 transitions. [2021-11-23 13:36:26,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-23 13:36:26,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:26,842 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:26,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-23 13:36:26,842 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:26,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:26,843 INFO L85 PathProgramCache]: Analyzing trace with hash 932442763, now seen corresponding path program 1 times [2021-11-23 13:36:26,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:26,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041591273] [2021-11-23 13:36:26,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:26,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:27,002 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-23 13:36:27,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:36:27,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041591273] [2021-11-23 13:36:27,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041591273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:27,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:27,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:36:27,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857164591] [2021-11-23 13:36:27,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:27,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:36:27,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:36:27,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:36:27,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:36:27,009 INFO L87 Difference]: Start difference. First operand 1221 states and 1542 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:27,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:27,628 INFO L93 Difference]: Finished difference Result 3055 states and 3859 transitions. [2021-11-23 13:36:27,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:36:27,629 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 128 [2021-11-23 13:36:27,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:27,642 INFO L225 Difference]: With dead ends: 3055 [2021-11-23 13:36:27,643 INFO L226 Difference]: Without dead ends: 1912 [2021-11-23 13:36:27,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:36:27,646 INFO L933 BasicCegarLoop]: 839 mSDtfsCounter, 597 mSDsluCounter, 1474 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 2313 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:27,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [597 Valid, 2313 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 13:36:27,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2021-11-23 13:36:27,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1632. [2021-11-23 13:36:27,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1631 states have (on average 1.2630288166768853) internal successors, (2060), 1631 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:27,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2060 transitions. [2021-11-23 13:36:27,704 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2060 transitions. Word has length 128 [2021-11-23 13:36:27,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:27,704 INFO L470 AbstractCegarLoop]: Abstraction has 1632 states and 2060 transitions. [2021-11-23 13:36:27,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:27,705 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2060 transitions. [2021-11-23 13:36:27,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-23 13:36:27,708 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:27,709 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:27,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 13:36:27,709 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:27,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:27,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1096143347, now seen corresponding path program 1 times [2021-11-23 13:36:27,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:27,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775355952] [2021-11-23 13:36:27,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:27,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:30,552 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-23 13:36:30,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:36:30,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775355952] [2021-11-23 13:36:30,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775355952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:30,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:30,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 13:36:30,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523315549] [2021-11-23 13:36:30,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:30,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-23 13:36:30,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:36:30,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-23 13:36:30,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:36:30,555 INFO L87 Difference]: Start difference. First operand 1632 states and 2060 transitions. Second operand has 15 states, 15 states have (on average 7.666666666666667) internal successors, (115), 14 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:32,630 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:36:37,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:37,643 INFO L93 Difference]: Finished difference Result 3238 states and 4088 transitions. [2021-11-23 13:36:37,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-23 13:36:37,644 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.666666666666667) internal successors, (115), 14 states have internal predecessors, (115), 0 states have call successors, (0), 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 128 [2021-11-23 13:36:37,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:37,660 INFO L225 Difference]: With dead ends: 3238 [2021-11-23 13:36:37,660 INFO L226 Difference]: Without dead ends: 2631 [2021-11-23 13:36:37,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=121, Invalid=529, Unknown=0, NotChecked=0, Total=650 [2021-11-23 13:36:37,663 INFO L933 BasicCegarLoop]: 1438 mSDtfsCounter, 1708 mSDsluCounter, 8421 mSDsCounter, 0 mSdLazyCounter, 3207 mSolverCounterSat, 29 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1708 SdHoareTripleChecker+Valid, 9859 SdHoareTripleChecker+Invalid, 3237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3207 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:37,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1708 Valid, 9859 Invalid, 3237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3207 Invalid, 1 Unknown, 0 Unchecked, 6.2s Time] [2021-11-23 13:36:37,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2631 states. [2021-11-23 13:36:37,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2631 to 1656. [2021-11-23 13:36:37,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1656 states, 1655 states have (on average 1.261631419939577) internal successors, (2088), 1655 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:37,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1656 states to 1656 states and 2088 transitions. [2021-11-23 13:36:37,725 INFO L78 Accepts]: Start accepts. Automaton has 1656 states and 2088 transitions. Word has length 128 [2021-11-23 13:36:37,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:37,726 INFO L470 AbstractCegarLoop]: Abstraction has 1656 states and 2088 transitions. [2021-11-23 13:36:37,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.666666666666667) internal successors, (115), 14 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:37,726 INFO L276 IsEmpty]: Start isEmpty. Operand 1656 states and 2088 transitions. [2021-11-23 13:36:37,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-23 13:36:37,730 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:37,730 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:37,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 13:36:37,731 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:37,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:37,732 INFO L85 PathProgramCache]: Analyzing trace with hash 290642063, now seen corresponding path program 1 times [2021-11-23 13:36:37,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:37,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901947921] [2021-11-23 13:36:37,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:37,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:38,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:39,674 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-23 13:36:39,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:36:39,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901947921] [2021-11-23 13:36:39,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901947921] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:39,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:39,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 13:36:39,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080077884] [2021-11-23 13:36:39,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:39,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 13:36:39,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:36:39,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 13:36:39,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:36:39,677 INFO L87 Difference]: Start difference. First operand 1656 states and 2088 transitions. Second operand has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:42,342 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:36:45,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:45,139 INFO L93 Difference]: Finished difference Result 3121 states and 3940 transitions. [2021-11-23 13:36:45,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:36:45,140 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 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 128 [2021-11-23 13:36:45,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:45,152 INFO L225 Difference]: With dead ends: 3121 [2021-11-23 13:36:45,153 INFO L226 Difference]: Without dead ends: 2514 [2021-11-23 13:36:45,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2021-11-23 13:36:45,155 INFO L933 BasicCegarLoop]: 1384 mSDtfsCounter, 866 mSDsluCounter, 6727 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 8111 SdHoareTripleChecker+Invalid, 1086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:45,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [866 Valid, 8111 Invalid, 1086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1076 Invalid, 1 Unknown, 0 Unchecked, 5.0s Time] [2021-11-23 13:36:45,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2514 states. [2021-11-23 13:36:45,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2514 to 1632. [2021-11-23 13:36:45,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1631 states have (on average 1.2624156958920907) internal successors, (2059), 1631 states have internal predecessors, (2059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:45,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2059 transitions. [2021-11-23 13:36:45,216 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2059 transitions. Word has length 128 [2021-11-23 13:36:45,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:45,216 INFO L470 AbstractCegarLoop]: Abstraction has 1632 states and 2059 transitions. [2021-11-23 13:36:45,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.454545454545455) internal successors, (115), 10 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:45,217 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2059 transitions. [2021-11-23 13:36:45,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-23 13:36:45,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:45,221 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:45,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 13:36:45,221 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:45,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:45,222 INFO L85 PathProgramCache]: Analyzing trace with hash -239949896, now seen corresponding path program 1 times [2021-11-23 13:36:45,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:45,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571727144] [2021-11-23 13:36:45,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:45,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:45,320 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-23 13:36:45,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:36:45,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571727144] [2021-11-23 13:36:45,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571727144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:45,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:45,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 13:36:45,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798103943] [2021-11-23 13:36:45,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:45,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 13:36:45,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:36:45,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 13:36:45,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:36:45,323 INFO L87 Difference]: Start difference. First operand 1632 states and 2059 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:45,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:45,431 INFO L93 Difference]: Finished difference Result 2774 states and 3517 transitions. [2021-11-23 13:36:45,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 13:36:45,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-23 13:36:45,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:45,437 INFO L225 Difference]: With dead ends: 2774 [2021-11-23 13:36:45,437 INFO L226 Difference]: Without dead ends: 1643 [2021-11-23 13:36:45,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 13:36:45,440 INFO L933 BasicCegarLoop]: 864 mSDtfsCounter, 0 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:45,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1698 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:36:45,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2021-11-23 13:36:45,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1643. [2021-11-23 13:36:45,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1643 states, 1642 states have (on average 1.2606577344701584) internal successors, (2070), 1642 states have internal predecessors, (2070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:45,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 2070 transitions. [2021-11-23 13:36:45,504 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 2070 transitions. Word has length 131 [2021-11-23 13:36:45,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:45,505 INFO L470 AbstractCegarLoop]: Abstraction has 1643 states and 2070 transitions. [2021-11-23 13:36:45,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:45,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 2070 transitions. [2021-11-23 13:36:45,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-23 13:36:45,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:45,509 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:45,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-23 13:36:45,510 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:45,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:45,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1137343174, now seen corresponding path program 1 times [2021-11-23 13:36:45,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:45,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904640911] [2021-11-23 13:36:45,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:45,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:48,833 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-23 13:36:48,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:36:48,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904640911] [2021-11-23 13:36:48,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904640911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:48,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:48,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:36:48,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199861161] [2021-11-23 13:36:48,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:48,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:36:48,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:36:48,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:36:48,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:36:48,838 INFO L87 Difference]: Start difference. First operand 1643 states and 2070 transitions. Second operand has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:50,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:50,021 INFO L93 Difference]: Finished difference Result 4158 states and 5196 transitions. [2021-11-23 13:36:50,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:36:50,021 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-23 13:36:50,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:50,026 INFO L225 Difference]: With dead ends: 4158 [2021-11-23 13:36:50,027 INFO L226 Difference]: Without dead ends: 2449 [2021-11-23 13:36:50,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:36:50,031 INFO L933 BasicCegarLoop]: 758 mSDtfsCounter, 1085 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1085 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:50,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1085 Valid, 1891 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 13:36:50,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2449 states. [2021-11-23 13:36:50,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2449 to 1985. [2021-11-23 13:36:50,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1985 states, 1984 states have (on average 1.2006048387096775) internal successors, (2382), 1984 states have internal predecessors, (2382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:50,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2382 transitions. [2021-11-23 13:36:50,098 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2382 transitions. Word has length 131 [2021-11-23 13:36:50,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:50,098 INFO L470 AbstractCegarLoop]: Abstraction has 1985 states and 2382 transitions. [2021-11-23 13:36:50,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.6) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:50,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2382 transitions. [2021-11-23 13:36:50,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-23 13:36:50,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:50,103 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:50,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-23 13:36:50,104 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:50,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:50,105 INFO L85 PathProgramCache]: Analyzing trace with hash 580390136, now seen corresponding path program 1 times [2021-11-23 13:36:50,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:50,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939443131] [2021-11-23 13:36:50,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:50,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:36:54,241 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-23 13:36:54,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:36:54,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939443131] [2021-11-23 13:36:54,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939443131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:36:54,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:36:54,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 13:36:54,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889025371] [2021-11-23 13:36:54,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:36:54,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 13:36:54,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:36:54,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 13:36:54,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:36:54,244 INFO L87 Difference]: Start difference. First operand 1985 states and 2382 transitions. Second operand has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 11 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:56,366 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:36:59,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:36:59,510 INFO L93 Difference]: Finished difference Result 3555 states and 4203 transitions. [2021-11-23 13:36:59,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-23 13:36:59,511 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 11 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2021-11-23 13:36:59,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:36:59,515 INFO L225 Difference]: With dead ends: 3555 [2021-11-23 13:36:59,516 INFO L226 Difference]: Without dead ends: 2929 [2021-11-23 13:36:59,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-11-23 13:36:59,518 INFO L933 BasicCegarLoop]: 798 mSDtfsCounter, 1327 mSDsluCounter, 5551 mSDsCounter, 0 mSdLazyCounter, 1478 mSolverCounterSat, 40 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1327 SdHoareTripleChecker+Valid, 6349 SdHoareTripleChecker+Invalid, 1519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1478 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:36:59,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1327 Valid, 6349 Invalid, 1519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1478 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2021-11-23 13:36:59,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2929 states. [2021-11-23 13:36:59,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2929 to 1985. [2021-11-23 13:36:59,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1985 states, 1984 states have (on average 1.1990927419354838) internal successors, (2379), 1984 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:59,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1985 states to 1985 states and 2379 transitions. [2021-11-23 13:36:59,585 INFO L78 Accepts]: Start accepts. Automaton has 1985 states and 2379 transitions. Word has length 131 [2021-11-23 13:36:59,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:36:59,585 INFO L470 AbstractCegarLoop]: Abstraction has 1985 states and 2379 transitions. [2021-11-23 13:36:59,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.833333333333334) internal successors, (118), 11 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:36:59,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1985 states and 2379 transitions. [2021-11-23 13:36:59,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-23 13:36:59,591 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:36:59,591 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:36:59,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-23 13:36:59,591 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:36:59,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:36:59,592 INFO L85 PathProgramCache]: Analyzing trace with hash -62071266, now seen corresponding path program 1 times [2021-11-23 13:36:59,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:36:59,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982737026] [2021-11-23 13:36:59,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:36:59,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:36:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:37:00,240 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-23 13:37:00,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:37:00,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982737026] [2021-11-23 13:37:00,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982737026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:37:00,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:37:00,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 13:37:00,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882764816] [2021-11-23 13:37:00,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:37:00,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:37:00,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:37:00,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:37:00,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:37:00,242 INFO L87 Difference]: Start difference. First operand 1985 states and 2379 transitions. Second operand has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:02,289 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:37:03,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:37:03,162 INFO L93 Difference]: Finished difference Result 3187 states and 3766 transitions. [2021-11-23 13:37:03,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 13:37:03,164 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2021-11-23 13:37:03,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:37:03,167 INFO L225 Difference]: With dead ends: 3187 [2021-11-23 13:37:03,167 INFO L226 Difference]: Without dead ends: 2197 [2021-11-23 13:37:03,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:37:03,169 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 2219 mSDsluCounter, 3050 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2219 SdHoareTripleChecker+Valid, 3742 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:37:03,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2219 Valid, 3742 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 466 Invalid, 1 Unknown, 0 Unchecked, 2.8s Time] [2021-11-23 13:37:03,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2197 states. [2021-11-23 13:37:03,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2197 to 1630. [2021-11-23 13:37:03,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1629 states have (on average 1.1939840392879066) internal successors, (1945), 1629 states have internal predecessors, (1945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:03,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 1945 transitions. [2021-11-23 13:37:03,227 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 1945 transitions. Word has length 144 [2021-11-23 13:37:03,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:37:03,227 INFO L470 AbstractCegarLoop]: Abstraction has 1630 states and 1945 transitions. [2021-11-23 13:37:03,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.375) internal successors, (131), 7 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:03,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 1945 transitions. [2021-11-23 13:37:03,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-23 13:37:03,232 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:37:03,232 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:37:03,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-23 13:37:03,232 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:37:03,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:37:03,233 INFO L85 PathProgramCache]: Analyzing trace with hash -833482433, now seen corresponding path program 1 times [2021-11-23 13:37:03,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:37:03,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951089779] [2021-11-23 13:37:03,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:37:03,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:37:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:37:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-23 13:37:07,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:37:07,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951089779] [2021-11-23 13:37:07,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951089779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:37:07,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:37:07,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-23 13:37:07,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327248751] [2021-11-23 13:37:07,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:37:07,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 13:37:07,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:37:07,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 13:37:07,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-23 13:37:07,320 INFO L87 Difference]: Start difference. First operand 1630 states and 1945 transitions. Second operand has 12 states, 12 states have (on average 11.0) internal successors, (132), 11 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:09,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 13:37:11,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:37:11,147 INFO L93 Difference]: Finished difference Result 2289 states and 2714 transitions. [2021-11-23 13:37:11,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:37:11,152 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 11.0) internal successors, (132), 11 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-11-23 13:37:11,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:37:11,155 INFO L225 Difference]: With dead ends: 2289 [2021-11-23 13:37:11,155 INFO L226 Difference]: Without dead ends: 2113 [2021-11-23 13:37:11,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-11-23 13:37:11,157 INFO L933 BasicCegarLoop]: 895 mSDtfsCounter, 555 mSDsluCounter, 5854 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 6749 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-23 13:37:11,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 6749 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1289 Invalid, 1 Unknown, 0 Unchecked, 3.5s Time] [2021-11-23 13:37:11,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2021-11-23 13:37:11,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 1888. [2021-11-23 13:37:11,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1888 states, 1887 states have (on average 1.1918388977212506) internal successors, (2249), 1887 states have internal predecessors, (2249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:11,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1888 states to 1888 states and 2249 transitions. [2021-11-23 13:37:11,219 INFO L78 Accepts]: Start accepts. Automaton has 1888 states and 2249 transitions. Word has length 145 [2021-11-23 13:37:11,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:37:11,220 INFO L470 AbstractCegarLoop]: Abstraction has 1888 states and 2249 transitions. [2021-11-23 13:37:11,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 11.0) internal successors, (132), 11 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:11,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1888 states and 2249 transitions. [2021-11-23 13:37:11,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-23 13:37:11,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:37:11,225 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:37:11,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-23 13:37:11,225 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:37:11,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:37:11,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1179539599, now seen corresponding path program 1 times [2021-11-23 13:37:11,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:37:11,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660055078] [2021-11-23 13:37:11,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:37:11,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:37:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:37:13,572 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-23 13:37:13,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:37:13,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660055078] [2021-11-23 13:37:13,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660055078] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:37:13,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:37:13,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:37:13,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248099302] [2021-11-23 13:37:13,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:37:13,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:37:13,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:37:13,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:37:13,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:37:13,576 INFO L87 Difference]: Start difference. First operand 1888 states and 2249 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:14,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:37:14,630 INFO L93 Difference]: Finished difference Result 3931 states and 4677 transitions. [2021-11-23 13:37:14,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:37:14,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-11-23 13:37:14,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:37:14,635 INFO L225 Difference]: With dead ends: 3931 [2021-11-23 13:37:14,635 INFO L226 Difference]: Without dead ends: 2150 [2021-11-23 13:37:14,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:37:14,638 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 1159 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1159 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:37:14,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1159 Valid, 1706 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 13:37:14,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2021-11-23 13:37:14,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 1952. [2021-11-23 13:37:14,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1952 states, 1951 states have (on average 1.186058431573552) internal successors, (2314), 1951 states have internal predecessors, (2314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:14,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1952 states to 1952 states and 2314 transitions. [2021-11-23 13:37:14,706 INFO L78 Accepts]: Start accepts. Automaton has 1952 states and 2314 transitions. Word has length 154 [2021-11-23 13:37:14,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:37:14,706 INFO L470 AbstractCegarLoop]: Abstraction has 1952 states and 2314 transitions. [2021-11-23 13:37:14,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:14,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1952 states and 2314 transitions. [2021-11-23 13:37:14,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-23 13:37:14,712 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:37:14,713 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:37:14,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-23 13:37:14,713 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:37:14,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:37:14,714 INFO L85 PathProgramCache]: Analyzing trace with hash -533212537, now seen corresponding path program 1 times [2021-11-23 13:37:14,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:37:14,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265025323] [2021-11-23 13:37:14,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:37:14,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:37:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:37:18,040 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2021-11-23 13:37:18,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:37:18,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265025323] [2021-11-23 13:37:18,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265025323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:37:18,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:37:18,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:37:18,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190228066] [2021-11-23 13:37:18,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:37:18,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:37:18,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:37:18,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:37:18,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:37:18,043 INFO L87 Difference]: Start difference. First operand 1952 states and 2314 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:18,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:37:18,962 INFO L93 Difference]: Finished difference Result 3852 states and 4545 transitions. [2021-11-23 13:37:18,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:37:18,963 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 155 [2021-11-23 13:37:18,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:37:18,966 INFO L225 Difference]: With dead ends: 3852 [2021-11-23 13:37:18,966 INFO L226 Difference]: Without dead ends: 2141 [2021-11-23 13:37:18,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:37:18,969 INFO L933 BasicCegarLoop]: 670 mSDtfsCounter, 126 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-23 13:37:18,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 1584 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-23 13:37:18,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2141 states. [2021-11-23 13:37:19,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2141 to 2099. [2021-11-23 13:37:19,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2099 states, 2098 states have (on average 1.17302192564347) internal successors, (2461), 2098 states have internal predecessors, (2461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:19,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 2461 transitions. [2021-11-23 13:37:19,060 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 2461 transitions. Word has length 155 [2021-11-23 13:37:19,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:37:19,061 INFO L470 AbstractCegarLoop]: Abstraction has 2099 states and 2461 transitions. [2021-11-23 13:37:19,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:37:19,061 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 2461 transitions. [2021-11-23 13:37:19,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-23 13:37:19,066 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:37:19,066 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:37:19,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-23 13:37:19,067 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 13:37:19,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:37:19,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1262931527, now seen corresponding path program 1 times [2021-11-23 13:37:19,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:37:19,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450793824] [2021-11-23 13:37:19,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:37:19,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:37:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:37:51,301 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-11-23 13:37:51,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:37:51,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450793824] [2021-11-23 13:37:51,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450793824] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 13:37:51,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063990886] [2021-11-23 13:37:51,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:37:51,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:37:51,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:37:51,304 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:37:51,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c27c65b-b3a4-4d2e-9cbb-07bc8c3ef568/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 13:38:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:38:03,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 982 conjuncts, 126 conjunts are in the unsatisfiable core [2021-11-23 13:38:03,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:38:04,538 INFO L354 Elim1Store]: treesize reduction 1348, result has 13.0 percent of original size [2021-11-23 13:38:04,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 21 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 61 case distinctions, treesize of input 134 treesize of output 294 [2021-11-23 13:38:24,692 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:38:24,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:38:24,751 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:38:28,138 INFO L354 Elim1Store]: treesize reduction 11204, result has 6.3 percent of original size [2021-11-23 13:38:28,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 10 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 14 new quantified variables, introduced 36 case distinctions, treesize of input 127332 treesize of output 2914