./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU --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 64bit --witnessprinter.graph.data.programhash 0a0b87150f68c4dfa6a57a3698556eda427efd851a248be648b2e5c8b3a3f4dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:11:08,138 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:11:08,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:11:08,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:11:08,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:11:08,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:11:08,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:11:08,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:11:08,187 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:11:08,188 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:11:08,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:11:08,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:11:08,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:11:08,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:11:08,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:11:08,197 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:11:08,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:11:08,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:11:08,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:11:08,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:11:08,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:11:08,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:11:08,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:11:08,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:11:08,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:11:08,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:11:08,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:11:08,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:11:08,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:11:08,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:11:08,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:11:08,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:11:08,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:11:08,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:11:08,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:11:08,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:11:08,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:11:08,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:11:08,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:11:08,225 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:11:08,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:11:08,227 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 22:11:08,262 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:11:08,262 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:11:08,263 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:11:08,263 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:11:08,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:11:08,266 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:11:08,266 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:11:08,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:11:08,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:11:08,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:11:08,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 22:11:08,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:11:08,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 22:11:08,268 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 22:11:08,268 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:11:08,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 22:11:08,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:11:08,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:11:08,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:11:08,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:11:08,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:11:08,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:11:08,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 22:11:08,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:11:08,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:11:08,271 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 22:11:08,271 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 22:11:08,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 22:11:08,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:11:08,273 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_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a0b87150f68c4dfa6a57a3698556eda427efd851a248be648b2e5c8b3a3f4dd [2021-11-02 22:11:08,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:11:08,571 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:11:08,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:11:08,575 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:11:08,576 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:11:08,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i [2021-11-02 22:11:08,679 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/data/da0c8665a/f9c5cbebc47c487c8f2113549b1df88a/FLAGf53782d2e [2021-11-02 22:11:09,602 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:11:09,603 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i [2021-11-02 22:11:09,654 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/data/da0c8665a/f9c5cbebc47c487c8f2113549b1df88a/FLAGf53782d2e [2021-11-02 22:11:10,039 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/data/da0c8665a/f9c5cbebc47c487c8f2113549b1df88a [2021-11-02 22:11:10,042 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:11:10,043 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 22:11:10,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:11:10,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:11:10,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:11:10,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:11:10" (1/1) ... [2021-11-02 22:11:10,052 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70e7d15b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:11:10, skipping insertion in model container [2021-11-02 22:11:10,052 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:11:10" (1/1) ... [2021-11-02 22:11:10,060 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:11:10,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:11:11,075 WARN L228 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_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i[156940,156953] [2021-11-02 22:11:12,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:11:12,280 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:11:12,404 WARN L228 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_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i[156940,156953] [2021-11-02 22:11:12,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:11:12,687 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:11:12,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:11:12 WrapperNode [2021-11-02 22:11:12,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:11:12,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 22:11:12,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 22:11:12,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 22:11:12,696 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:11:12" (1/1) ... [2021-11-02 22:11:12,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:11:12" (1/1) ... [2021-11-02 22:11:13,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 22:11:13,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:11:13,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:11:13,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:11:13,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:11:12" (1/1) ... [2021-11-02 22:11:13,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:11:12" (1/1) ... [2021-11-02 22:11:13,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:11:12" (1/1) ... [2021-11-02 22:11:13,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:11:12" (1/1) ... [2021-11-02 22:11:13,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:11:12" (1/1) ... [2021-11-02 22:11:13,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:11:12" (1/1) ... [2021-11-02 22:11:13,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:11:12" (1/1) ... [2021-11-02 22:11:13,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:11:13,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:11:13,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:11:13,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:11:13,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:11:12" (1/1) ... [2021-11-02 22:11:13,610 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:11:13,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:11:13,640 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:11:13,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:11:13,689 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ctrl_complete [2021-11-02 22:11:13,689 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ctrl_complete [2021-11-02 22:11:13,690 INFO L130 BoogieDeclarations]: Found specification of procedure dout_reset [2021-11-02 22:11:13,690 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_reset [2021-11-02 22:11:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 22:11:13,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 22:11:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-02 22:11:13,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-02 22:11:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_st5481 [2021-11-02 22:11:13,692 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_st5481 [2021-11-02 22:11:13,692 INFO L130 BoogieDeclarations]: Found specification of procedure usb_next_ctrl_msg [2021-11-02 22:11:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_next_ctrl_msg [2021-11-02 22:11:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure usb_b_out [2021-11-02 22:11:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_b_out [2021-11-02 22:11:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_usb_device_ctrl_msg [2021-11-02 22:11:13,693 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_usb_device_ctrl_msg [2021-11-02 22:11:13,693 INFO L130 BoogieDeclarations]: Found specification of procedure led_blink [2021-11-02 22:11:13,694 INFO L138 BoogieDeclarations]: Found implementation of procedure led_blink [2021-11-02 22:11:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_in_mode [2021-11-02 22:11:13,694 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_in_mode [2021-11-02 22:11:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_start_rcv [2021-11-02 22:11:13,694 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_start_rcv [2021-11-02 22:11:13,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_23 [2021-11-02 22:11:13,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_23 [2021-11-02 22:11:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_24 [2021-11-02 22:11:13,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_24 [2021-11-02 22:11:13,695 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2021-11-02 22:11:13,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2021-11-02 22:11:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_25 [2021-11-02 22:11:13,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_25 [2021-11-02 22:11:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:11:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_27 [2021-11-02 22:11:13,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_27 [2021-11-02 22:11:13,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_28 [2021-11-02 22:11:13,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_28 [2021-11-02 22:11:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure ph_connect [2021-11-02 22:11:13,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ph_connect [2021-11-02 22:11:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure st5481B_mode [2021-11-02 22:11:13,697 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481B_mode [2021-11-02 22:11:13,697 INFO L130 BoogieDeclarations]: Found specification of procedure B_L1L2 [2021-11-02 22:11:13,698 INFO L138 BoogieDeclarations]: Found implementation of procedure B_L1L2 [2021-11-02 22:11:13,698 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~VOID [2021-11-02 22:11:13,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~VOID [2021-11-02 22:11:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_10 [2021-11-02 22:11:13,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_10 [2021-11-02 22:11:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:11:13,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_11 [2021-11-02 22:11:13,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_11 [2021-11-02 22:11:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure ph_disconnect [2021-11-02 22:11:13,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ph_disconnect [2021-11-02 22:11:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:11:13,700 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f6 [2021-11-02 22:11:13,700 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f6 [2021-11-02 22:11:13,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 22:11:13,701 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f7 [2021-11-02 22:11:13,701 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f7 [2021-11-02 22:11:13,701 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f8 [2021-11-02 22:11:13,701 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f8 [2021-11-02 22:11:13,702 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_b_l2l1 [2021-11-02 22:11:13,702 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_b_l2l1 [2021-11-02 22:11:13,703 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f3 [2021-11-02 22:11:13,704 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f3 [2021-11-02 22:11:13,704 INFO L130 BoogieDeclarations]: Found specification of procedure dout_short_fifo [2021-11-02 22:11:13,704 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_short_fifo [2021-11-02 22:11:13,704 INFO L130 BoogieDeclarations]: Found specification of procedure usb_in_complete [2021-11-02 22:11:13,704 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_in_complete [2021-11-02 22:11:13,705 INFO L130 BoogieDeclarations]: Found specification of procedure usb_d_out_complete [2021-11-02 22:11:13,705 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_d_out_complete [2021-11-02 22:11:13,705 INFO L130 BoogieDeclarations]: Found specification of procedure st5481B_start_xfer [2021-11-02 22:11:13,705 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481B_start_xfer [2021-11-02 22:11:13,706 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_usb_pipe_reset [2021-11-02 22:11:13,706 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_usb_pipe_reset [2021-11-02 22:11:13,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 22:11:13,707 INFO L130 BoogieDeclarations]: Found specification of procedure dout_check_busy [2021-11-02 22:11:13,707 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_check_busy [2021-11-02 22:11:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 22:11:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 22:11:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure usb_d_out [2021-11-02 22:11:13,708 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_d_out [2021-11-02 22:11:13,708 INFO L130 BoogieDeclarations]: Found specification of procedure dout_long_den [2021-11-02 22:11:13,708 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_long_den [2021-11-02 22:11:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure dout_stop [2021-11-02 22:11:13,709 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_stop [2021-11-02 22:11:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure dout_underrun [2021-11-02 22:11:13,709 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_underrun [2021-11-02 22:11:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 22:11:13,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_31 [2021-11-02 22:11:13,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_31 [2021-11-02 22:11:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:11:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ctrl_msg [2021-11-02 22:11:13,710 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ctrl_msg [2021-11-02 22:11:13,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:11:13,711 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 22:11:13,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 22:11:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure l1_activate [2021-11-02 22:11:13,712 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_activate [2021-11-02 22:11:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure l1_timer3 [2021-11-02 22:11:13,712 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_timer3 [2021-11-02 22:11:13,712 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_stop [2021-11-02 22:11:13,713 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_stop [2021-11-02 22:11:13,713 INFO L130 BoogieDeclarations]: Found specification of procedure dout_long_enable_fifo [2021-11-02 22:11:13,713 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_long_enable_fifo [2021-11-02 22:11:13,714 INFO L130 BoogieDeclarations]: Found specification of procedure usb_b_out_complete [2021-11-02 22:11:13,714 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_b_out_complete [2021-11-02 22:11:13,715 INFO L130 BoogieDeclarations]: Found specification of procedure usb_int_complete [2021-11-02 22:11:13,715 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_int_complete [2021-11-02 22:11:13,715 INFO L130 BoogieDeclarations]: Found specification of procedure D_L1L2 [2021-11-02 22:11:13,715 INFO L138 BoogieDeclarations]: Found implementation of procedure D_L1L2 [2021-11-02 22:11:13,715 INFO L130 BoogieDeclarations]: Found specification of procedure dout_complete [2021-11-02 22:11:13,715 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_complete [2021-11-02 22:11:13,716 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_ph_command [2021-11-02 22:11:13,716 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_ph_command [2021-11-02 22:11:13,716 INFO L130 BoogieDeclarations]: Found specification of procedure dout_start_xmit [2021-11-02 22:11:13,716 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_start_xmit [2021-11-02 22:11:13,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 22:11:13,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:11:13,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:11:42,965 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:11:42,965 INFO L299 CfgBuilder]: Removed 929 assume(true) statements. [2021-11-02 22:11:42,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:11:42 BoogieIcfgContainer [2021-11-02 22:11:42,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:11:42,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:11:42,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:11:42,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:11:42,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:11:10" (1/3) ... [2021-11-02 22:11:42,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51eddd00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:11:42, skipping insertion in model container [2021-11-02 22:11:42,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:11:12" (2/3) ... [2021-11-02 22:11:42,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51eddd00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:11:42, skipping insertion in model container [2021-11-02 22:11:42,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:11:42" (3/3) ... [2021-11-02 22:11:42,987 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i [2021-11-02 22:11:42,993 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:11:43,000 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-11-02 22:11:43,076 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:11:43,080 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 [2021-11-02 22:11:43,081 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-11-02 22:11:43,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 1442 states, 1277 states have (on average 1.4064212999216914) internal successors, (1796), 1317 states have internal predecessors, (1796), 108 states have call successors, (108), 51 states have call predecessors, (108), 51 states have return successors, (108), 87 states have call predecessors, (108), 108 states have call successors, (108) [2021-11-02 22:11:43,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 22:11:43,133 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:43,133 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:11:43,134 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:11:43,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:43,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1160909501, now seen corresponding path program 1 times [2021-11-02 22:11:43,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:11:43,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304521386] [2021-11-02 22:11:43,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:43,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:11:43,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:11:44,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:11:44,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304521386] [2021-11-02 22:11:44,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304521386] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:11:44,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:11:44,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:11:44,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342384803] [2021-11-02 22:11:44,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:11:44,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:11:44,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:11:44,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:11:44,133 INFO L87 Difference]: Start difference. First operand has 1442 states, 1277 states have (on average 1.4064212999216914) internal successors, (1796), 1317 states have internal predecessors, (1796), 108 states have call successors, (108), 51 states have call predecessors, (108), 51 states have return successors, (108), 87 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:46,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:11:46,796 INFO L93 Difference]: Finished difference Result 4262 states and 6171 transitions. [2021-11-02 22:11:46,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:11:46,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-11-02 22:11:46,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:11:46,845 INFO L225 Difference]: With dead ends: 4262 [2021-11-02 22:11:46,845 INFO L226 Difference]: Without dead ends: 2807 [2021-11-02 22:11:46,861 INFO L786 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 [2021-11-02 22:11:46,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2021-11-02 22:11:47,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2807. [2021-11-02 22:11:47,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2807 states, 2484 states have (on average 1.3719806763285025) internal successors, (3408), 2558 states have internal predecessors, (3408), 216 states have call successors, (216), 102 states have call predecessors, (216), 102 states have return successors, (216), 174 states have call predecessors, (216), 216 states have call successors, (216) [2021-11-02 22:11:47,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 3840 transitions. [2021-11-02 22:11:47,229 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 3840 transitions. Word has length 17 [2021-11-02 22:11:47,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:11:47,229 INFO L470 AbstractCegarLoop]: Abstraction has 2807 states and 3840 transitions. [2021-11-02 22:11:47,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:47,230 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 3840 transitions. [2021-11-02 22:11:47,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-02 22:11:47,233 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:47,233 INFO L513 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] [2021-11-02 22:11:47,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 22:11:47,236 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:11:47,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:47,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1148775864, now seen corresponding path program 1 times [2021-11-02 22:11:47,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:11:47,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825046684] [2021-11-02 22:11:47,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:47,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:11:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:47,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:11:47,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:11:47,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825046684] [2021-11-02 22:11:47,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825046684] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:11:47,650 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:11:47,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:11:47,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290755780] [2021-11-02 22:11:47,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:11:47,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:11:47,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:11:47,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:11:47,654 INFO L87 Difference]: Start difference. First operand 2807 states and 3840 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:47,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:11:47,887 INFO L93 Difference]: Finished difference Result 2837 states and 3868 transitions. [2021-11-02 22:11:47,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:11:47,887 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-02 22:11:47,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:11:47,909 INFO L225 Difference]: With dead ends: 2837 [2021-11-02 22:11:47,910 INFO L226 Difference]: Without dead ends: 2822 [2021-11-02 22:11:47,915 INFO L786 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 [2021-11-02 22:11:47,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2021-11-02 22:11:48,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2807. [2021-11-02 22:11:48,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2807 states, 2484 states have (on average 1.3715780998389695) internal successors, (3407), 2558 states have internal predecessors, (3407), 216 states have call successors, (216), 102 states have call predecessors, (216), 102 states have return successors, (216), 174 states have call predecessors, (216), 216 states have call successors, (216) [2021-11-02 22:11:48,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 3839 transitions. [2021-11-02 22:11:48,087 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 3839 transitions. Word has length 23 [2021-11-02 22:11:48,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:11:48,087 INFO L470 AbstractCegarLoop]: Abstraction has 2807 states and 3839 transitions. [2021-11-02 22:11:48,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:48,088 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 3839 transitions. [2021-11-02 22:11:48,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-02 22:11:48,098 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:48,098 INFO L513 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] [2021-11-02 22:11:48,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 22:11:48,098 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:11:48,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:48,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1148835446, now seen corresponding path program 1 times [2021-11-02 22:11:48,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:11:48,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874967192] [2021-11-02 22:11:48,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:48,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:11:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:48,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:11:48,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:11:48,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874967192] [2021-11-02 22:11:48,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874967192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:11:48,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:11:48,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:11:48,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119934960] [2021-11-02 22:11:48,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:11:48,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:11:48,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:11:48,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:11:48,867 INFO L87 Difference]: Start difference. First operand 2807 states and 3839 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:49,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:11:49,496 INFO L93 Difference]: Finished difference Result 8403 states and 12146 transitions. [2021-11-02 22:11:49,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:11:49,497 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-02 22:11:49,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:11:49,545 INFO L225 Difference]: With dead ends: 8403 [2021-11-02 22:11:49,546 INFO L226 Difference]: Without dead ends: 5604 [2021-11-02 22:11:49,566 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:11:49,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5604 states. [2021-11-02 22:11:49,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5604 to 5592. [2021-11-02 22:11:49,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5592 states, 4951 states have (on average 1.3609371844071905) internal successors, (6738), 5095 states have internal predecessors, (6738), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-02 22:11:49,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5592 states to 5592 states and 7818 transitions. [2021-11-02 22:11:49,846 INFO L78 Accepts]: Start accepts. Automaton has 5592 states and 7818 transitions. Word has length 23 [2021-11-02 22:11:49,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:11:49,847 INFO L470 AbstractCegarLoop]: Abstraction has 5592 states and 7818 transitions. [2021-11-02 22:11:49,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 2 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:49,847 INFO L276 IsEmpty]: Start isEmpty. Operand 5592 states and 7818 transitions. [2021-11-02 22:11:49,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-02 22:11:49,850 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:49,850 INFO L513 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] [2021-11-02 22:11:49,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 22:11:49,851 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:11:49,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:49,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1254163039, now seen corresponding path program 1 times [2021-11-02 22:11:49,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:11:49,852 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653974349] [2021-11-02 22:11:49,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:49,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:11:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:50,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:11:50,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:11:50,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653974349] [2021-11-02 22:11:50,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653974349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:11:50,371 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:11:50,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:11:50,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193471681] [2021-11-02 22:11:50,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:11:50,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:11:50,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:11:50,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:11:50,374 INFO L87 Difference]: Start difference. First operand 5592 states and 7818 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:50,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:11:50,589 INFO L93 Difference]: Finished difference Result 5592 states and 7818 transitions. [2021-11-02 22:11:50,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:11:50,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2021-11-02 22:11:50,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:11:50,637 INFO L225 Difference]: With dead ends: 5592 [2021-11-02 22:11:50,638 INFO L226 Difference]: Without dead ends: 5590 [2021-11-02 22:11:50,641 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:11:50,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5590 states. [2021-11-02 22:11:50,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5590 to 5590. [2021-11-02 22:11:50,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5590 states, 4950 states have (on average 1.360808080808081) internal successors, (6736), 5093 states have internal predecessors, (6736), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-02 22:11:50,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 7816 transitions. [2021-11-02 22:11:50,924 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 7816 transitions. Word has length 24 [2021-11-02 22:11:50,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:11:50,930 INFO L470 AbstractCegarLoop]: Abstraction has 5590 states and 7816 transitions. [2021-11-02 22:11:50,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:50,931 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 7816 transitions. [2021-11-02 22:11:50,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-02 22:11:50,933 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:50,933 INFO L513 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] [2021-11-02 22:11:50,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 22:11:50,934 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:11:50,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:50,934 INFO L85 PathProgramCache]: Analyzing trace with hash 224351136, now seen corresponding path program 1 times [2021-11-02 22:11:50,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:11:50,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917477550] [2021-11-02 22:11:50,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:50,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:11:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:51,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:11:51,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:11:51,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917477550] [2021-11-02 22:11:51,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917477550] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:11:51,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:11:51,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:11:51,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252733816] [2021-11-02 22:11:51,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:11:51,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:11:51,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:11:51,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:11:51,289 INFO L87 Difference]: Start difference. First operand 5590 states and 7816 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:51,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:11:51,467 INFO L93 Difference]: Finished difference Result 5590 states and 7816 transitions. [2021-11-02 22:11:51,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:11:51,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-02 22:11:51,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:11:51,512 INFO L225 Difference]: With dead ends: 5590 [2021-11-02 22:11:51,512 INFO L226 Difference]: Without dead ends: 5588 [2021-11-02 22:11:51,516 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:11:51,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5588 states. [2021-11-02 22:11:51,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5588 to 5588. [2021-11-02 22:11:51,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5588 states, 4949 states have (on average 1.3606789250353606) internal successors, (6734), 5091 states have internal predecessors, (6734), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-02 22:11:51,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5588 states to 5588 states and 7814 transitions. [2021-11-02 22:11:51,823 INFO L78 Accepts]: Start accepts. Automaton has 5588 states and 7814 transitions. Word has length 25 [2021-11-02 22:11:51,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:11:51,824 INFO L470 AbstractCegarLoop]: Abstraction has 5588 states and 7814 transitions. [2021-11-02 22:11:51,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:51,825 INFO L276 IsEmpty]: Start isEmpty. Operand 5588 states and 7814 transitions. [2021-11-02 22:11:51,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-02 22:11:51,826 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:51,826 INFO L513 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] [2021-11-02 22:11:51,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 22:11:51,827 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:11:51,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:51,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1635046775, now seen corresponding path program 1 times [2021-11-02 22:11:51,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:11:51,828 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814377149] [2021-11-02 22:11:51,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:51,829 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:11:51,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:11:52,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:11:52,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814377149] [2021-11-02 22:11:52,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814377149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:11:52,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:11:52,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:11:52,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605388676] [2021-11-02 22:11:52,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:11:52,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:11:52,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:11:52,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:11:52,139 INFO L87 Difference]: Start difference. First operand 5588 states and 7814 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:52,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:11:52,388 INFO L93 Difference]: Finished difference Result 5588 states and 7814 transitions. [2021-11-02 22:11:52,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:11:52,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-02 22:11:52,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:11:52,432 INFO L225 Difference]: With dead ends: 5588 [2021-11-02 22:11:52,432 INFO L226 Difference]: Without dead ends: 5586 [2021-11-02 22:11:52,434 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:11:52,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5586 states. [2021-11-02 22:11:52,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5586 to 5586. [2021-11-02 22:11:52,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5586 states, 4948 states have (on average 1.360549717057397) internal successors, (6732), 5089 states have internal predecessors, (6732), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-02 22:11:52,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5586 states to 5586 states and 7812 transitions. [2021-11-02 22:11:52,714 INFO L78 Accepts]: Start accepts. Automaton has 5586 states and 7812 transitions. Word has length 26 [2021-11-02 22:11:52,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:11:52,716 INFO L470 AbstractCegarLoop]: Abstraction has 5586 states and 7812 transitions. [2021-11-02 22:11:52,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:52,717 INFO L276 IsEmpty]: Start isEmpty. Operand 5586 states and 7812 transitions. [2021-11-02 22:11:52,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-02 22:11:52,719 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:52,719 INFO L513 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] [2021-11-02 22:11:52,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 22:11:52,720 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:11:52,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:52,720 INFO L85 PathProgramCache]: Analyzing trace with hash 853160138, now seen corresponding path program 1 times [2021-11-02 22:11:52,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:11:52,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801150188] [2021-11-02 22:11:52,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:52,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:11:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:52,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:11:52,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:11:52,987 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801150188] [2021-11-02 22:11:52,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801150188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:11:52,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:11:52,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 22:11:52,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991821358] [2021-11-02 22:11:52,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:11:52,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:11:52,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:11:52,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:11:52,991 INFO L87 Difference]: Start difference. First operand 5586 states and 7812 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:53,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:11:53,183 INFO L93 Difference]: Finished difference Result 5586 states and 7812 transitions. [2021-11-02 22:11:53,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:11:53,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-02 22:11:53,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:11:53,225 INFO L225 Difference]: With dead ends: 5586 [2021-11-02 22:11:53,225 INFO L226 Difference]: Without dead ends: 5575 [2021-11-02 22:11:53,229 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:11:53,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5575 states. [2021-11-02 22:11:53,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5575 to 5575. [2021-11-02 22:11:53,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5575 states, 4938 states have (on average 1.3606723369785338) internal successors, (6719), 5078 states have internal predecessors, (6719), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-02 22:11:53,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5575 states to 5575 states and 7799 transitions. [2021-11-02 22:11:53,500 INFO L78 Accepts]: Start accepts. Automaton has 5575 states and 7799 transitions. Word has length 27 [2021-11-02 22:11:53,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:11:53,500 INFO L470 AbstractCegarLoop]: Abstraction has 5575 states and 7799 transitions. [2021-11-02 22:11:53,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:53,501 INFO L276 IsEmpty]: Start isEmpty. Operand 5575 states and 7799 transitions. [2021-11-02 22:11:53,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-02 22:11:53,510 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:53,510 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:11:53,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 22:11:53,510 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:11:53,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:53,511 INFO L85 PathProgramCache]: Analyzing trace with hash -848641613, now seen corresponding path program 1 times [2021-11-02 22:11:53,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:11:53,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775737384] [2021-11-02 22:11:53,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:53,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:11:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:53,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:11:53,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:11:53,791 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775737384] [2021-11-02 22:11:53,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775737384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:11:53,792 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:11:53,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:11:53,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514587518] [2021-11-02 22:11:53,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:11:53,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:11:53,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:11:53,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:11:53,794 INFO L87 Difference]: Start difference. First operand 5575 states and 7799 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:54,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:11:54,250 INFO L93 Difference]: Finished difference Result 11226 states and 15706 transitions. [2021-11-02 22:11:54,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:11:54,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-11-02 22:11:54,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:11:54,278 INFO L225 Difference]: With dead ends: 11226 [2021-11-02 22:11:54,278 INFO L226 Difference]: Without dead ends: 5659 [2021-11-02 22:11:54,297 INFO L786 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 [2021-11-02 22:11:54,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5659 states. [2021-11-02 22:11:54,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5659 to 5653. [2021-11-02 22:11:54,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5653 states, 5016 states have (on average 1.3610446570972887) internal successors, (6827), 5156 states have internal predecessors, (6827), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-02 22:11:54,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5653 states to 5653 states and 7907 transitions. [2021-11-02 22:11:54,562 INFO L78 Accepts]: Start accepts. Automaton has 5653 states and 7907 transitions. Word has length 68 [2021-11-02 22:11:54,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:11:54,562 INFO L470 AbstractCegarLoop]: Abstraction has 5653 states and 7907 transitions. [2021-11-02 22:11:54,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:54,563 INFO L276 IsEmpty]: Start isEmpty. Operand 5653 states and 7907 transitions. [2021-11-02 22:11:54,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 22:11:54,571 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:54,571 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 22:11:54,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 22:11:54,572 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:11:54,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:54,572 INFO L85 PathProgramCache]: Analyzing trace with hash 381165906, now seen corresponding path program 1 times [2021-11-02 22:11:54,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:11:54,573 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059483099] [2021-11-02 22:11:54,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:54,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:11:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:54,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:11:54,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:11:54,919 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059483099] [2021-11-02 22:11:54,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059483099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:11:54,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:11:54,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:11:54,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222145133] [2021-11-02 22:11:54,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:11:54,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:11:54,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:11:54,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:11:54,925 INFO L87 Difference]: Start difference. First operand 5653 states and 7907 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:55,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:11:55,227 INFO L93 Difference]: Finished difference Result 11314 states and 15829 transitions. [2021-11-02 22:11:55,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:11:55,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2021-11-02 22:11:55,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:11:55,256 INFO L225 Difference]: With dead ends: 11314 [2021-11-02 22:11:55,256 INFO L226 Difference]: Without dead ends: 5669 [2021-11-02 22:11:55,277 INFO L786 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 [2021-11-02 22:11:55,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2021-11-02 22:11:55,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 5661. [2021-11-02 22:11:55,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5661 states, 5024 states have (on average 1.36046974522293) internal successors, (6835), 5164 states have internal predecessors, (6835), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-02 22:11:55,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5661 states to 5661 states and 7915 transitions. [2021-11-02 22:11:55,546 INFO L78 Accepts]: Start accepts. Automaton has 5661 states and 7915 transitions. Word has length 83 [2021-11-02 22:11:55,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:11:55,549 INFO L470 AbstractCegarLoop]: Abstraction has 5661 states and 7915 transitions. [2021-11-02 22:11:55,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:55,549 INFO L276 IsEmpty]: Start isEmpty. Operand 5661 states and 7915 transitions. [2021-11-02 22:11:55,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-02 22:11:55,559 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:55,560 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 22:11:55,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 22:11:55,560 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:11:55,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:55,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1712946834, now seen corresponding path program 1 times [2021-11-02 22:11:55,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:11:55,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063196685] [2021-11-02 22:11:55,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:55,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:11:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:56,037 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:11:56,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:11:56,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063196685] [2021-11-02 22:11:56,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063196685] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:11:56,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711575864] [2021-11-02 22:11:56,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:56,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:11:56,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:11:56,041 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:11:56,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 22:11:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:58,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 3910 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:11:58,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:11:58,292 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-02 22:11:58,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711575864] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:11:58,293 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:11:58,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-02 22:11:58,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275296179] [2021-11-02 22:11:58,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:11:58,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:11:58,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:11:58,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:11:58,295 INFO L87 Difference]: Start difference. First operand 5661 states and 7915 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:58,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:11:58,667 INFO L93 Difference]: Finished difference Result 11330 states and 15845 transitions. [2021-11-02 22:11:58,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:11:58,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 85 [2021-11-02 22:11:58,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:11:58,695 INFO L225 Difference]: With dead ends: 11330 [2021-11-02 22:11:58,696 INFO L226 Difference]: Without dead ends: 5677 [2021-11-02 22:11:58,718 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:11:58,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5677 states. [2021-11-02 22:11:58,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5677 to 5677. [2021-11-02 22:11:58,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5677 states, 5040 states have (on average 1.3593253968253969) internal successors, (6851), 5180 states have internal predecessors, (6851), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-02 22:11:58,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5677 states to 5677 states and 7931 transitions. [2021-11-02 22:11:59,001 INFO L78 Accepts]: Start accepts. Automaton has 5677 states and 7931 transitions. Word has length 85 [2021-11-02 22:11:59,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:11:59,001 INFO L470 AbstractCegarLoop]: Abstraction has 5677 states and 7931 transitions. [2021-11-02 22:11:59,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:11:59,002 INFO L276 IsEmpty]: Start isEmpty. Operand 5677 states and 7931 transitions. [2021-11-02 22:11:59,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 22:11:59,009 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:11:59,009 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 22:11:59,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:11:59,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-02 22:11:59,226 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:11:59,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:11:59,227 INFO L85 PathProgramCache]: Analyzing trace with hash 184371850, now seen corresponding path program 2 times [2021-11-02 22:11:59,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:11:59,227 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115955591] [2021-11-02 22:11:59,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:11:59,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:11:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:11:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:11:59,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:11:59,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115955591] [2021-11-02 22:11:59,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115955591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:11:59,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:11:59,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:11:59,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916250110] [2021-11-02 22:11:59,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:11:59,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:11:59,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:11:59,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:11:59,580 INFO L87 Difference]: Start difference. First operand 5677 states and 7931 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:02,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:02,574 INFO L93 Difference]: Finished difference Result 17023 states and 23783 transitions. [2021-11-02 22:12:02,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:12:02,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-02 22:12:02,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:02,626 INFO L225 Difference]: With dead ends: 17023 [2021-11-02 22:12:02,626 INFO L226 Difference]: Without dead ends: 11354 [2021-11-02 22:12:02,651 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:12:02,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11354 states. [2021-11-02 22:12:02,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11354 to 5685. [2021-11-02 22:12:02,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5685 states, 5048 states have (on average 1.358755942947702) internal successors, (6859), 5188 states have internal predecessors, (6859), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-02 22:12:03,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 7939 transitions. [2021-11-02 22:12:03,020 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 7939 transitions. Word has length 87 [2021-11-02 22:12:03,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:03,021 INFO L470 AbstractCegarLoop]: Abstraction has 5685 states and 7939 transitions. [2021-11-02 22:12:03,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:03,022 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 7939 transitions. [2021-11-02 22:12:03,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-02 22:12:03,036 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:03,036 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 22:12:03,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 22:12:03,036 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:12:03,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:03,037 INFO L85 PathProgramCache]: Analyzing trace with hash -402434164, now seen corresponding path program 1 times [2021-11-02 22:12:03,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:12:03,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873682738] [2021-11-02 22:12:03,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:03,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:12:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:03,615 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:12:03,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:12:03,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873682738] [2021-11-02 22:12:03,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873682738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:03,616 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:03,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:12:03,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340974574] [2021-11-02 22:12:03,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:12:03,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:12:03,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:12:03,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:12:03,618 INFO L87 Difference]: Start difference. First operand 5685 states and 7939 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:04,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:04,427 INFO L93 Difference]: Finished difference Result 13355 states and 18527 transitions. [2021-11-02 22:12:04,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:12:04,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-02 22:12:04,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:04,455 INFO L225 Difference]: With dead ends: 13355 [2021-11-02 22:12:04,455 INFO L226 Difference]: Without dead ends: 7670 [2021-11-02 22:12:04,472 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:12:04,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7670 states. [2021-11-02 22:12:04,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7670 to 5685. [2021-11-02 22:12:04,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5685 states, 5048 states have (on average 1.3579635499207607) internal successors, (6855), 5188 states have internal predecessors, (6855), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-02 22:12:04,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5685 states to 5685 states and 7935 transitions. [2021-11-02 22:12:04,836 INFO L78 Accepts]: Start accepts. Automaton has 5685 states and 7935 transitions. Word has length 87 [2021-11-02 22:12:04,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:04,837 INFO L470 AbstractCegarLoop]: Abstraction has 5685 states and 7935 transitions. [2021-11-02 22:12:04,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:04,837 INFO L276 IsEmpty]: Start isEmpty. Operand 5685 states and 7935 transitions. [2021-11-02 22:12:04,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-02 22:12:04,845 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:04,845 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 22:12:04,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 22:12:04,846 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:12:04,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:04,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1875368696, now seen corresponding path program 1 times [2021-11-02 22:12:04,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:12:04,849 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012168107] [2021-11-02 22:12:04,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:04,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:12:05,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:12:05,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:12:05,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012168107] [2021-11-02 22:12:05,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012168107] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:05,533 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:05,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 22:12:05,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320967818] [2021-11-02 22:12:05,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 22:12:05,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:12:05,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 22:12:05,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:12:05,535 INFO L87 Difference]: Start difference. First operand 5685 states and 7935 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:13,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:13,426 INFO L93 Difference]: Finished difference Result 16742 states and 23071 transitions. [2021-11-02 22:12:13,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 22:12:13,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 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 89 [2021-11-02 22:12:13,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:13,467 INFO L225 Difference]: With dead ends: 16742 [2021-11-02 22:12:13,467 INFO L226 Difference]: Without dead ends: 11065 [2021-11-02 22:12:13,481 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:12:13,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11065 states. [2021-11-02 22:12:13,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11065 to 5705. [2021-11-02 22:12:13,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5705 states, 5068 states have (on average 1.35655090765588) internal successors, (6875), 5208 states have internal predecessors, (6875), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-02 22:12:13,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5705 states to 5705 states and 7955 transitions. [2021-11-02 22:12:13,909 INFO L78 Accepts]: Start accepts. Automaton has 5705 states and 7955 transitions. Word has length 89 [2021-11-02 22:12:13,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:13,910 INFO L470 AbstractCegarLoop]: Abstraction has 5705 states and 7955 transitions. [2021-11-02 22:12:13,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:13,910 INFO L276 IsEmpty]: Start isEmpty. Operand 5705 states and 7955 transitions. [2021-11-02 22:12:13,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 22:12:13,918 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:13,919 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 22:12:13,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 22:12:13,919 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:12:13,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:13,920 INFO L85 PathProgramCache]: Analyzing trace with hash 445986628, now seen corresponding path program 1 times [2021-11-02 22:12:13,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:12:13,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685141507] [2021-11-02 22:12:13,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:13,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:12:14,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:14,390 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:12:14,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:12:14,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685141507] [2021-11-02 22:12:14,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685141507] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:14,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:14,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:12:14,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128803817] [2021-11-02 22:12:14,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:12:14,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:12:14,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:12:14,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:12:14,395 INFO L87 Difference]: Start difference. First operand 5705 states and 7955 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:14,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:14,872 INFO L93 Difference]: Finished difference Result 13519 states and 18715 transitions. [2021-11-02 22:12:14,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:12:14,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-02 22:12:14,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:14,902 INFO L225 Difference]: With dead ends: 13519 [2021-11-02 22:12:14,903 INFO L226 Difference]: Without dead ends: 7822 [2021-11-02 22:12:14,917 INFO L786 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 [2021-11-02 22:12:14,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7822 states. [2021-11-02 22:12:15,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7822 to 5709. [2021-11-02 22:12:15,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5709 states, 5072 states have (on average 1.3562697160883281) internal successors, (6879), 5212 states have internal predecessors, (6879), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-02 22:12:15,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5709 states to 5709 states and 7959 transitions. [2021-11-02 22:12:15,525 INFO L78 Accepts]: Start accepts. Automaton has 5709 states and 7959 transitions. Word has length 91 [2021-11-02 22:12:15,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:15,526 INFO L470 AbstractCegarLoop]: Abstraction has 5709 states and 7959 transitions. [2021-11-02 22:12:15,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:15,527 INFO L276 IsEmpty]: Start isEmpty. Operand 5709 states and 7959 transitions. [2021-11-02 22:12:15,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-02 22:12:15,536 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:15,536 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 22:12:15,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-02 22:12:15,537 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:12:15,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:15,537 INFO L85 PathProgramCache]: Analyzing trace with hash -540204671, now seen corresponding path program 1 times [2021-11-02 22:12:15,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:12:15,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153969090] [2021-11-02 22:12:15,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:15,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:12:15,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:16,069 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:12:16,069 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:12:16,069 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153969090] [2021-11-02 22:12:16,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153969090] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:16,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:16,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:12:16,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442391876] [2021-11-02 22:12:16,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:12:16,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:12:16,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:12:16,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:12:16,074 INFO L87 Difference]: Start difference. First operand 5709 states and 7959 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:18,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:18,193 INFO L93 Difference]: Finished difference Result 24657 states and 33563 transitions. [2021-11-02 22:12:18,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 22:12:18,194 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 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 94 [2021-11-02 22:12:18,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:18,259 INFO L225 Difference]: With dead ends: 24657 [2021-11-02 22:12:18,259 INFO L226 Difference]: Without dead ends: 18956 [2021-11-02 22:12:18,277 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:12:18,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18956 states. [2021-11-02 22:12:18,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18956 to 5721. [2021-11-02 22:12:18,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5721 states, 5084 states have (on average 1.3554287962234461) internal successors, (6891), 5224 states have internal predecessors, (6891), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-02 22:12:18,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5721 states to 5721 states and 7971 transitions. [2021-11-02 22:12:18,834 INFO L78 Accepts]: Start accepts. Automaton has 5721 states and 7971 transitions. Word has length 94 [2021-11-02 22:12:18,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:18,836 INFO L470 AbstractCegarLoop]: Abstraction has 5721 states and 7971 transitions. [2021-11-02 22:12:18,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:18,836 INFO L276 IsEmpty]: Start isEmpty. Operand 5721 states and 7971 transitions. [2021-11-02 22:12:18,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-02 22:12:18,845 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:18,845 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 22:12:18,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-02 22:12:18,846 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:12:18,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:18,846 INFO L85 PathProgramCache]: Analyzing trace with hash -2050509027, now seen corresponding path program 1 times [2021-11-02 22:12:18,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:12:18,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012361040] [2021-11-02 22:12:18,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:18,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:12:19,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:19,340 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:12:19,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:12:19,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012361040] [2021-11-02 22:12:19,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012361040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:19,340 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:19,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:12:19,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732999308] [2021-11-02 22:12:19,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:12:19,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:12:19,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:12:19,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:12:19,342 INFO L87 Difference]: Start difference. First operand 5721 states and 7971 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:21,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:21,988 INFO L93 Difference]: Finished difference Result 24745 states and 33699 transitions. [2021-11-02 22:12:21,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 22:12:21,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-02 22:12:21,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:22,036 INFO L225 Difference]: With dead ends: 24745 [2021-11-02 22:12:22,036 INFO L226 Difference]: Without dead ends: 19032 [2021-11-02 22:12:22,050 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:12:22,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19032 states. [2021-11-02 22:12:22,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19032 to 5729. [2021-11-02 22:12:22,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5729 states, 5092 states have (on average 1.3548703849175177) internal successors, (6899), 5232 states have internal predecessors, (6899), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-02 22:12:22,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5729 states to 5729 states and 7979 transitions. [2021-11-02 22:12:22,648 INFO L78 Accepts]: Start accepts. Automaton has 5729 states and 7979 transitions. Word has length 96 [2021-11-02 22:12:22,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:22,648 INFO L470 AbstractCegarLoop]: Abstraction has 5729 states and 7979 transitions. [2021-11-02 22:12:22,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:22,648 INFO L276 IsEmpty]: Start isEmpty. Operand 5729 states and 7979 transitions. [2021-11-02 22:12:22,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-02 22:12:22,656 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:22,657 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 22:12:22,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-02 22:12:22,657 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:12:22,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:22,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1050932583, now seen corresponding path program 1 times [2021-11-02 22:12:22,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:12:22,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849176934] [2021-11-02 22:12:22,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:22,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:12:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:23,083 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:12:23,083 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:12:23,083 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849176934] [2021-11-02 22:12:23,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849176934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:23,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:23,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:12:23,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618691029] [2021-11-02 22:12:23,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:12:23,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:12:23,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:12:23,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:12:23,087 INFO L87 Difference]: Start difference. First operand 5729 states and 7979 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 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) [2021-11-02 22:12:24,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:24,924 INFO L93 Difference]: Finished difference Result 16981 states and 23295 transitions. [2021-11-02 22:12:24,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:12:24,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 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 98 [2021-11-02 22:12:24,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:24,967 INFO L225 Difference]: With dead ends: 16981 [2021-11-02 22:12:24,967 INFO L226 Difference]: Without dead ends: 11260 [2021-11-02 22:12:24,986 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:12:24,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11260 states. [2021-11-02 22:12:25,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11260 to 5857. [2021-11-02 22:12:25,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5857 states, 5220 states have (on average 1.3522988505747127) internal successors, (7059), 5360 states have internal predecessors, (7059), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-02 22:12:25,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5857 states to 5857 states and 8139 transitions. [2021-11-02 22:12:25,627 INFO L78 Accepts]: Start accepts. Automaton has 5857 states and 8139 transitions. Word has length 98 [2021-11-02 22:12:25,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:25,628 INFO L470 AbstractCegarLoop]: Abstraction has 5857 states and 8139 transitions. [2021-11-02 22:12:25,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 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) [2021-11-02 22:12:25,628 INFO L276 IsEmpty]: Start isEmpty. Operand 5857 states and 8139 transitions. [2021-11-02 22:12:25,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 22:12:25,638 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:25,638 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 22:12:25,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-02 22:12:25,638 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:12:25,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:25,639 INFO L85 PathProgramCache]: Analyzing trace with hash -2052678435, now seen corresponding path program 1 times [2021-11-02 22:12:25,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:12:25,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861463755] [2021-11-02 22:12:25,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:25,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:12:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:26,804 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:12:26,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:12:26,804 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861463755] [2021-11-02 22:12:26,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861463755] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:26,804 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:26,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 22:12:26,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920816378] [2021-11-02 22:12:26,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:12:26,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:12:26,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:12:26,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:12:26,806 INFO L87 Difference]: Start difference. First operand 5857 states and 8139 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:40,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:40,581 INFO L93 Difference]: Finished difference Result 22056 states and 29916 transitions. [2021-11-02 22:12:40,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-02 22:12:40,583 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-11-02 22:12:40,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:40,625 INFO L225 Difference]: With dead ends: 22056 [2021-11-02 22:12:40,625 INFO L226 Difference]: Without dead ends: 16207 [2021-11-02 22:12:40,643 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1008 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=627, Invalid=2343, Unknown=0, NotChecked=0, Total=2970 [2021-11-02 22:12:40,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16207 states. [2021-11-02 22:12:41,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16207 to 5857. [2021-11-02 22:12:41,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5857 states, 5220 states have (on average 1.3519157088122606) internal successors, (7057), 5360 states have internal predecessors, (7057), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-02 22:12:41,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5857 states to 5857 states and 8137 transitions. [2021-11-02 22:12:41,451 INFO L78 Accepts]: Start accepts. Automaton has 5857 states and 8137 transitions. Word has length 100 [2021-11-02 22:12:41,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:41,452 INFO L470 AbstractCegarLoop]: Abstraction has 5857 states and 8137 transitions. [2021-11-02 22:12:41,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 9 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:41,452 INFO L276 IsEmpty]: Start isEmpty. Operand 5857 states and 8137 transitions. [2021-11-02 22:12:41,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-02 22:12:41,463 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:41,463 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 22:12:41,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-02 22:12:41,464 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:12:41,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:41,464 INFO L85 PathProgramCache]: Analyzing trace with hash -262262845, now seen corresponding path program 1 times [2021-11-02 22:12:41,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:12:41,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101480542] [2021-11-02 22:12:41,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:41,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:12:41,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:42,199 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:12:42,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:12:42,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101480542] [2021-11-02 22:12:42,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101480542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:42,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:42,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:12:42,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891611477] [2021-11-02 22:12:42,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:12:42,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:12:42,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:12:42,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:12:42,202 INFO L87 Difference]: Start difference. First operand 5857 states and 8137 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:45,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:12:45,573 INFO L93 Difference]: Finished difference Result 18539 states and 25266 transitions. [2021-11-02 22:12:45,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 22:12:45,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-02 22:12:45,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:12:45,615 INFO L225 Difference]: With dead ends: 18539 [2021-11-02 22:12:45,615 INFO L226 Difference]: Without dead ends: 12690 [2021-11-02 22:12:45,632 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:12:45,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12690 states. [2021-11-02 22:12:46,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12690 to 5793. [2021-11-02 22:12:46,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5793 states, 5156 states have (on average 1.3527928626842514) internal successors, (6975), 5296 states have internal predecessors, (6975), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-02 22:12:46,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5793 states to 5793 states and 8055 transitions. [2021-11-02 22:12:46,670 INFO L78 Accepts]: Start accepts. Automaton has 5793 states and 8055 transitions. Word has length 116 [2021-11-02 22:12:46,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:12:46,670 INFO L470 AbstractCegarLoop]: Abstraction has 5793 states and 8055 transitions. [2021-11-02 22:12:46,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 5 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:12:46,670 INFO L276 IsEmpty]: Start isEmpty. Operand 5793 states and 8055 transitions. [2021-11-02 22:12:46,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-02 22:12:46,682 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:12:46,682 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 22:12:46,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-02 22:12:46,683 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:12:46,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:12:46,684 INFO L85 PathProgramCache]: Analyzing trace with hash 852425825, now seen corresponding path program 1 times [2021-11-02 22:12:46,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:12:46,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145218786] [2021-11-02 22:12:46,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:12:46,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:12:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:12:48,367 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:12:48,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:12:48,368 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145218786] [2021-11-02 22:12:48,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145218786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:12:48,368 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:12:48,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 22:12:48,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608543114] [2021-11-02 22:12:48,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:12:48,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:12:48,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:12:48,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:12:48,370 INFO L87 Difference]: Start difference. First operand 5793 states and 8055 transitions. Second operand has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:13:06,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:13:06,934 INFO L93 Difference]: Finished difference Result 27160 states and 36660 transitions. [2021-11-02 22:13:06,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-11-02 22:13:06,936 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-02 22:13:06,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:13:06,982 INFO L225 Difference]: With dead ends: 27160 [2021-11-02 22:13:06,983 INFO L226 Difference]: Without dead ends: 21375 [2021-11-02 22:13:07,001 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1750 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=896, Invalid=3796, Unknown=0, NotChecked=0, Total=4692 [2021-11-02 22:13:07,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21375 states. [2021-11-02 22:13:07,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21375 to 5793. [2021-11-02 22:13:07,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5793 states, 5156 states have (on average 1.3524049650892165) internal successors, (6973), 5296 states have internal predecessors, (6973), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-02 22:13:07,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5793 states to 5793 states and 8053 transitions. [2021-11-02 22:13:07,923 INFO L78 Accepts]: Start accepts. Automaton has 5793 states and 8053 transitions. Word has length 116 [2021-11-02 22:13:07,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:13:07,924 INFO L470 AbstractCegarLoop]: Abstraction has 5793 states and 8053 transitions. [2021-11-02 22:13:07,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.555555555555555) internal successors, (113), 9 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:13:07,924 INFO L276 IsEmpty]: Start isEmpty. Operand 5793 states and 8053 transitions. [2021-11-02 22:13:07,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-02 22:13:07,937 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:13:07,937 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 22:13:07,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-02 22:13:07,937 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:13:07,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:13:07,938 INFO L85 PathProgramCache]: Analyzing trace with hash 143688362, now seen corresponding path program 1 times [2021-11-02 22:13:07,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:13:07,938 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485654389] [2021-11-02 22:13:07,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:13:07,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:13:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:13:08,268 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:13:08,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:13:08,269 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485654389] [2021-11-02 22:13:08,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485654389] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:13:08,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:13:08,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:13:08,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507700399] [2021-11-02 22:13:08,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:13:08,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:13:08,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:13:08,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:13:08,272 INFO L87 Difference]: Start difference. First operand 5793 states and 8053 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) [2021-11-02 22:13:16,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:13:16,263 INFO L93 Difference]: Finished difference Result 12418 states and 17213 transitions. [2021-11-02 22:13:16,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:13:16,287 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 118 [2021-11-02 22:13:16,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:13:16,304 INFO L225 Difference]: With dead ends: 12418 [2021-11-02 22:13:16,304 INFO L226 Difference]: Without dead ends: 6633 [2021-11-02 22:13:16,317 INFO L786 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 [2021-11-02 22:13:16,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6633 states. [2021-11-02 22:13:17,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6633 to 5841. [2021-11-02 22:13:17,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5841 states, 5204 states have (on average 1.3491544965411222) internal successors, (7021), 5344 states have internal predecessors, (7021), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-02 22:13:17,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5841 states to 5841 states and 8101 transitions. [2021-11-02 22:13:17,199 INFO L78 Accepts]: Start accepts. Automaton has 5841 states and 8101 transitions. Word has length 118 [2021-11-02 22:13:17,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:13:17,200 INFO L470 AbstractCegarLoop]: Abstraction has 5841 states and 8101 transitions. [2021-11-02 22:13:17,200 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) [2021-11-02 22:13:17,200 INFO L276 IsEmpty]: Start isEmpty. Operand 5841 states and 8101 transitions. [2021-11-02 22:13:17,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-02 22:13:17,212 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:13:17,213 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 22:13:17,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-02 22:13:17,213 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:13:17,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:13:17,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1159778289, now seen corresponding path program 1 times [2021-11-02 22:13:17,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:13:17,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881980362] [2021-11-02 22:13:17,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:13:17,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:13:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:13:17,577 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:13:17,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:13:17,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881980362] [2021-11-02 22:13:17,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881980362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:13:17,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:13:17,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:13:17,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105340801] [2021-11-02 22:13:17,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:13:17,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:13:17,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:13:17,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:13:17,582 INFO L87 Difference]: Start difference. First operand 5841 states and 8101 transitions. Second operand has 4 states, 4 states have (on average 29.5) 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) [2021-11-02 22:13:18,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:13:18,884 INFO L93 Difference]: Finished difference Result 13829 states and 19031 transitions. [2021-11-02 22:13:18,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:13:18,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.5) 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 121 [2021-11-02 22:13:18,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:13:18,903 INFO L225 Difference]: With dead ends: 13829 [2021-11-02 22:13:18,903 INFO L226 Difference]: Without dead ends: 7996 [2021-11-02 22:13:18,914 INFO L786 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 [2021-11-02 22:13:18,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7996 states. [2021-11-02 22:13:19,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7996 to 5845. [2021-11-02 22:13:19,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5845 states, 5208 states have (on average 1.3488863287250383) internal successors, (7025), 5348 states have internal predecessors, (7025), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-02 22:13:19,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5845 states to 5845 states and 8105 transitions. [2021-11-02 22:13:19,869 INFO L78 Accepts]: Start accepts. Automaton has 5845 states and 8105 transitions. Word has length 121 [2021-11-02 22:13:19,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:13:19,870 INFO L470 AbstractCegarLoop]: Abstraction has 5845 states and 8105 transitions. [2021-11-02 22:13:19,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) 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) [2021-11-02 22:13:19,870 INFO L276 IsEmpty]: Start isEmpty. Operand 5845 states and 8105 transitions. [2021-11-02 22:13:19,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-02 22:13:19,885 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:13:19,885 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 22:13:19,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-02 22:13:19,885 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:13:19,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:13:19,886 INFO L85 PathProgramCache]: Analyzing trace with hash -76519722, now seen corresponding path program 1 times [2021-11-02 22:13:19,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:13:19,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983633539] [2021-11-02 22:13:19,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:13:19,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:13:20,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:13:20,224 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:13:20,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:13:20,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983633539] [2021-11-02 22:13:20,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983633539] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:13:20,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426202907] [2021-11-02 22:13:20,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:13:20,226 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:13:20,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:13:20,231 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:13:20,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 22:13:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:13:22,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 4199 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:13:22,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:13:22,469 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 22:13:22,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426202907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:13:22,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:13:22,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-02 22:13:22,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268034193] [2021-11-02 22:13:22,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:13:22,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:13:22,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:13:22,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:13:22,472 INFO L87 Difference]: Start difference. First operand 5845 states and 8105 transitions. Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:13:23,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:13:23,304 INFO L93 Difference]: Finished difference Result 12583 states and 17405 transitions. [2021-11-02 22:13:23,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:13:23,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-02 22:13:23,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:13:23,321 INFO L225 Difference]: With dead ends: 12583 [2021-11-02 22:13:23,322 INFO L226 Difference]: Without dead ends: 6746 [2021-11-02 22:13:23,333 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:13:23,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6746 states. [2021-11-02 22:13:24,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6746 to 5747. [2021-11-02 22:13:24,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5747 states, 5110 states have (on average 1.34853228962818) internal successors, (6891), 5250 states have internal predecessors, (6891), 432 states have call successors, (432), 204 states have call predecessors, (432), 204 states have return successors, (648), 348 states have call predecessors, (648), 432 states have call successors, (648) [2021-11-02 22:13:24,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5747 states to 5747 states and 7971 transitions. [2021-11-02 22:13:24,049 INFO L78 Accepts]: Start accepts. Automaton has 5747 states and 7971 transitions. Word has length 122 [2021-11-02 22:13:24,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:13:24,049 INFO L470 AbstractCegarLoop]: Abstraction has 5747 states and 7971 transitions. [2021-11-02 22:13:24,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 4 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:13:24,049 INFO L276 IsEmpty]: Start isEmpty. Operand 5747 states and 7971 transitions. [2021-11-02 22:13:24,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-02 22:13:24,059 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:13:24,059 INFO L513 BasicCegarLoop]: trace histogram [3, 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] [2021-11-02 22:13:24,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:13:24,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-11-02 22:13:24,275 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:13:24,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:13:24,275 INFO L85 PathProgramCache]: Analyzing trace with hash 851412063, now seen corresponding path program 1 times [2021-11-02 22:13:24,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:13:24,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56810847] [2021-11-02 22:13:24,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:13:24,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:13:30,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:13:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:13:31,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:13:31,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56810847] [2021-11-02 22:13:31,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56810847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:13:31,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:13:31,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 22:13:31,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051644100] [2021-11-02 22:13:31,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 22:13:31,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:13:31,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 22:13:31,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:13:31,399 INFO L87 Difference]: Start difference. First operand 5747 states and 7971 transitions. Second operand has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:48,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:48,064 INFO L93 Difference]: Finished difference Result 20946 states and 28726 transitions. [2021-11-02 22:14:48,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-11-02 22:14:48,065 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 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 124 [2021-11-02 22:14:48,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:48,133 INFO L225 Difference]: With dead ends: 20946 [2021-11-02 22:14:48,133 INFO L226 Difference]: Without dead ends: 15153 [2021-11-02 22:14:48,154 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3032 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=1571, Invalid=6261, Unknown=0, NotChecked=0, Total=7832 [2021-11-02 22:14:48,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15153 states. [2021-11-02 22:14:49,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15153 to 7688. [2021-11-02 22:14:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7688 states, 6739 states have (on average 1.3515358361774743) internal successors, (9108), 6947 states have internal predecessors, (9108), 642 states have call successors, (642), 306 states have call predecessors, (642), 306 states have return successors, (858), 516 states have call predecessors, (858), 642 states have call successors, (858) [2021-11-02 22:14:49,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7688 states to 7688 states and 10608 transitions. [2021-11-02 22:14:49,213 INFO L78 Accepts]: Start accepts. Automaton has 7688 states and 10608 transitions. Word has length 124 [2021-11-02 22:14:49,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:49,213 INFO L470 AbstractCegarLoop]: Abstraction has 7688 states and 10608 transitions. [2021-11-02 22:14:49,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:49,214 INFO L276 IsEmpty]: Start isEmpty. Operand 7688 states and 10608 transitions. [2021-11-02 22:14:49,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-02 22:14:49,226 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:49,226 INFO L513 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:49,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-02 22:14:49,227 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:14:49,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:49,227 INFO L85 PathProgramCache]: Analyzing trace with hash -325152332, now seen corresponding path program 1 times [2021-11-02 22:14:49,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:49,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126454824] [2021-11-02 22:14:49,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:49,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:14:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:14:49,811 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:14:49,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:14:49,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126454824] [2021-11-02 22:14:49,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126454824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:14:49,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:14:49,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 22:14:49,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492743764] [2021-11-02 22:14:49,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:14:49,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:14:49,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:14:49,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:14:49,813 INFO L87 Difference]: Start difference. First operand 7688 states and 10608 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:53,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:14:53,724 INFO L93 Difference]: Finished difference Result 20957 states and 28569 transitions. [2021-11-02 22:14:53,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-02 22:14:53,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-11-02 22:14:53,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:14:53,768 INFO L225 Difference]: With dead ends: 20957 [2021-11-02 22:14:53,768 INFO L226 Difference]: Without dead ends: 13277 [2021-11-02 22:14:53,792 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-02 22:14:53,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13277 states. [2021-11-02 22:14:54,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13277 to 7696. [2021-11-02 22:14:54,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7696 states, 6747 states have (on average 1.3511190158589002) internal successors, (9116), 6955 states have internal predecessors, (9116), 642 states have call successors, (642), 306 states have call predecessors, (642), 306 states have return successors, (858), 516 states have call predecessors, (858), 642 states have call successors, (858) [2021-11-02 22:14:54,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7696 states to 7696 states and 10616 transitions. [2021-11-02 22:14:54,974 INFO L78 Accepts]: Start accepts. Automaton has 7696 states and 10616 transitions. Word has length 146 [2021-11-02 22:14:54,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:14:54,975 INFO L470 AbstractCegarLoop]: Abstraction has 7696 states and 10616 transitions. [2021-11-02 22:14:54,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:14:54,975 INFO L276 IsEmpty]: Start isEmpty. Operand 7696 states and 10616 transitions. [2021-11-02 22:14:54,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-02 22:14:54,985 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:14:54,985 INFO L513 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:14:54,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-02 22:14:54,986 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:14:54,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:14:54,987 INFO L85 PathProgramCache]: Analyzing trace with hash -572329288, now seen corresponding path program 1 times [2021-11-02 22:14:54,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:14:54,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007432956] [2021-11-02 22:14:54,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:14:54,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:15:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:15:17,703 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:15:17,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:15:17,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007432956] [2021-11-02 22:15:17,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007432956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:15:17,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:15:17,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-02 22:15:17,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990494902] [2021-11-02 22:15:17,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-02 22:15:17,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:15:17,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-02 22:15:17,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2021-11-02 22:15:17,707 INFO L87 Difference]: Start difference. First operand 7696 states and 10616 transitions. Second operand has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:17:22,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:17:22,652 INFO L93 Difference]: Finished difference Result 32922 states and 45079 transitions. [2021-11-02 22:17:22,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2021-11-02 22:17:22,653 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-11-02 22:17:22,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:17:22,745 INFO L225 Difference]: With dead ends: 32922 [2021-11-02 22:17:22,746 INFO L226 Difference]: Without dead ends: 25146 [2021-11-02 22:17:22,783 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10671 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=4753, Invalid=21329, Unknown=0, NotChecked=0, Total=26082 [2021-11-02 22:17:22,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25146 states. [2021-11-02 22:17:24,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25146 to 11820. [2021-11-02 22:17:24,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11820 states, 10243 states have (on average 1.3548765010250903) internal successors, (13878), 10587 states have internal predecessors, (13878), 1066 states have call successors, (1066), 510 states have call predecessors, (1066), 510 states have return successors, (1282), 858 states have call predecessors, (1282), 1066 states have call successors, (1282) [2021-11-02 22:17:24,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11820 states to 11820 states and 16226 transitions. [2021-11-02 22:17:24,503 INFO L78 Accepts]: Start accepts. Automaton has 11820 states and 16226 transitions. Word has length 148 [2021-11-02 22:17:24,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:17:24,504 INFO L470 AbstractCegarLoop]: Abstraction has 11820 states and 16226 transitions. [2021-11-02 22:17:24,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.576923076923077) internal successors, (145), 26 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:17:24,504 INFO L276 IsEmpty]: Start isEmpty. Operand 11820 states and 16226 transitions. [2021-11-02 22:17:24,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-02 22:17:24,513 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:17:24,513 INFO L513 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:17:24,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-02 22:17:24,513 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:17:24,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:17:24,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1703838082, now seen corresponding path program 1 times [2021-11-02 22:17:24,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:17:24,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31782099] [2021-11-02 22:17:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:17:24,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:17:43,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:17:46,038 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:17:46,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:17:46,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31782099] [2021-11-02 22:17:46,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31782099] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:17:46,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:17:46,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-11-02 22:17:46,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954621940] [2021-11-02 22:17:46,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-02 22:17:46,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:17:46,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-02 22:17:46,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2021-11-02 22:17:46,042 INFO L87 Difference]: Start difference. First operand 11820 states and 16226 transitions. Second operand has 24 states, 24 states have (on average 6.166666666666667) internal successors, (148), 24 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:20:37,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:20:37,342 INFO L93 Difference]: Finished difference Result 42821 states and 58622 transitions. [2021-11-02 22:20:37,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2021-11-02 22:20:37,343 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 6.166666666666667) internal successors, (148), 24 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 151 [2021-11-02 22:20:37,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:20:37,439 INFO L225 Difference]: With dead ends: 42821 [2021-11-02 22:20:37,439 INFO L226 Difference]: Without dead ends: 30945 [2021-11-02 22:20:37,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9708 ImplicationChecksByTransitivity, 25.8s TimeCoverageRelationStatistics Valid=4936, Invalid=21146, Unknown=0, NotChecked=0, Total=26082 [2021-11-02 22:20:37,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30945 states. [2021-11-02 22:20:39,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30945 to 13957. [2021-11-02 22:20:39,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13957 states, 12068 states have (on average 1.3567285382830627) internal successors, (16373), 12480 states have internal predecessors, (16373), 1276 states have call successors, (1276), 612 states have call predecessors, (1276), 612 states have return successors, (1492), 1026 states have call predecessors, (1492), 1276 states have call successors, (1492) [2021-11-02 22:20:39,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13957 states to 13957 states and 19141 transitions. [2021-11-02 22:20:39,752 INFO L78 Accepts]: Start accepts. Automaton has 13957 states and 19141 transitions. Word has length 151 [2021-11-02 22:20:39,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:20:39,752 INFO L470 AbstractCegarLoop]: Abstraction has 13957 states and 19141 transitions. [2021-11-02 22:20:39,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.166666666666667) internal successors, (148), 24 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:20:39,753 INFO L276 IsEmpty]: Start isEmpty. Operand 13957 states and 19141 transitions. [2021-11-02 22:20:39,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-02 22:20:39,763 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:20:39,763 INFO L513 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:20:39,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-02 22:20:39,763 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:20:39,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:20:39,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1732425486, now seen corresponding path program 1 times [2021-11-02 22:20:39,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:20:39,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339918298] [2021-11-02 22:20:39,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:20:39,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:20:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:20:40,135 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:20:40,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:20:40,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339918298] [2021-11-02 22:20:40,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339918298] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:20:40,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:20:40,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 22:20:40,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266097383] [2021-11-02 22:20:40,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:20:40,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:20:40,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:20:40,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:20:40,139 INFO L87 Difference]: Start difference. First operand 13957 states and 19141 transitions. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:20:42,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:20:42,985 INFO L93 Difference]: Finished difference Result 28823 states and 39329 transitions. [2021-11-02 22:20:42,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:20:42,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2021-11-02 22:20:42,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:20:43,034 INFO L225 Difference]: With dead ends: 28823 [2021-11-02 22:20:43,034 INFO L226 Difference]: Without dead ends: 16791 [2021-11-02 22:20:43,062 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:20:43,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16791 states. [2021-11-02 22:20:45,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16791 to 13961. [2021-11-02 22:20:45,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13961 states, 12072 states have (on average 1.3562789927104042) internal successors, (16373), 12484 states have internal predecessors, (16373), 1276 states have call successors, (1276), 612 states have call predecessors, (1276), 612 states have return successors, (1492), 1026 states have call predecessors, (1492), 1276 states have call successors, (1492) [2021-11-02 22:20:45,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13961 states to 13961 states and 19141 transitions. [2021-11-02 22:20:45,066 INFO L78 Accepts]: Start accepts. Automaton has 13961 states and 19141 transitions. Word has length 158 [2021-11-02 22:20:45,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:20:45,066 INFO L470 AbstractCegarLoop]: Abstraction has 13961 states and 19141 transitions. [2021-11-02 22:20:45,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:20:45,067 INFO L276 IsEmpty]: Start isEmpty. Operand 13961 states and 19141 transitions. [2021-11-02 22:20:45,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-11-02 22:20:45,078 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:20:45,078 INFO L513 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:20:45,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-02 22:20:45,078 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:20:45,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:20:45,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1594391245, now seen corresponding path program 1 times [2021-11-02 22:20:45,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:20:45,079 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623692656] [2021-11-02 22:20:45,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:20:45,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:20:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:20:45,467 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:20:45,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:20:45,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623692656] [2021-11-02 22:20:45,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623692656] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:20:45,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966598840] [2021-11-02 22:20:45,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:20:45,468 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:20:45,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:20:45,471 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:20:45,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 22:20:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:20:47,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 4756 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:20:47,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:20:47,812 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:20:47,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966598840] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:20:47,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:20:47,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-02 22:20:47,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176950661] [2021-11-02 22:20:47,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:20:47,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:20:47,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:20:47,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:20:47,815 INFO L87 Difference]: Start difference. First operand 13961 states and 19141 transitions. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:01,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:21:01,000 INFO L93 Difference]: Finished difference Result 26773 states and 36690 transitions. [2021-11-02 22:21:01,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:21:01,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 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 168 [2021-11-02 22:21:01,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:21:01,045 INFO L225 Difference]: With dead ends: 26773 [2021-11-02 22:21:01,045 INFO L226 Difference]: Without dead ends: 14737 [2021-11-02 22:21:01,070 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:21:01,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14737 states. [2021-11-02 22:21:03,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14737 to 14715. [2021-11-02 22:21:03,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14715 states, 12826 states have (on average 1.351707469203181) internal successors, (17337), 13238 states have internal predecessors, (17337), 1276 states have call successors, (1276), 612 states have call predecessors, (1276), 612 states have return successors, (1492), 1026 states have call predecessors, (1492), 1276 states have call successors, (1492) [2021-11-02 22:21:03,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14715 states to 14715 states and 20105 transitions. [2021-11-02 22:21:03,371 INFO L78 Accepts]: Start accepts. Automaton has 14715 states and 20105 transitions. Word has length 168 [2021-11-02 22:21:03,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:21:03,372 INFO L470 AbstractCegarLoop]: Abstraction has 14715 states and 20105 transitions. [2021-11-02 22:21:03,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:03,373 INFO L276 IsEmpty]: Start isEmpty. Operand 14715 states and 20105 transitions. [2021-11-02 22:21:03,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-02 22:21:03,393 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:21:03,394 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:21:03,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:21:03,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-02 22:21:03,611 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:21:03,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:21:03,611 INFO L85 PathProgramCache]: Analyzing trace with hash -417753735, now seen corresponding path program 2 times [2021-11-02 22:21:03,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:21:03,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233202673] [2021-11-02 22:21:03,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:03,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:21:03,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:04,090 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 22:21:04,090 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:21:04,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233202673] [2021-11-02 22:21:04,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233202673] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:21:04,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:21:04,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 22:21:04,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734021264] [2021-11-02 22:21:04,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:21:04,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:21:04,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:21:04,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:21:04,093 INFO L87 Difference]: Start difference. First operand 14715 states and 20105 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:07,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:21:07,755 INFO L93 Difference]: Finished difference Result 31139 states and 42313 transitions. [2021-11-02 22:21:07,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:21:07,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 172 [2021-11-02 22:21:07,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:21:07,800 INFO L225 Difference]: With dead ends: 31139 [2021-11-02 22:21:07,801 INFO L226 Difference]: Without dead ends: 18349 [2021-11-02 22:21:07,822 INFO L786 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 [2021-11-02 22:21:07,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18349 states. [2021-11-02 22:21:10,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18349 to 14721. [2021-11-02 22:21:10,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14721 states, 12832 states have (on average 1.3515430174563592) internal successors, (17343), 13244 states have internal predecessors, (17343), 1276 states have call successors, (1276), 612 states have call predecessors, (1276), 612 states have return successors, (1492), 1026 states have call predecessors, (1492), 1276 states have call successors, (1492) [2021-11-02 22:21:10,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14721 states to 14721 states and 20111 transitions. [2021-11-02 22:21:10,158 INFO L78 Accepts]: Start accepts. Automaton has 14721 states and 20111 transitions. Word has length 172 [2021-11-02 22:21:10,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:21:10,158 INFO L470 AbstractCegarLoop]: Abstraction has 14721 states and 20111 transitions. [2021-11-02 22:21:10,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:10,158 INFO L276 IsEmpty]: Start isEmpty. Operand 14721 states and 20111 transitions. [2021-11-02 22:21:10,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-02 22:21:10,176 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:21:10,177 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:21:10,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-02 22:21:10,177 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:21:10,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:21:10,178 INFO L85 PathProgramCache]: Analyzing trace with hash 63707790, now seen corresponding path program 1 times [2021-11-02 22:21:10,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:21:10,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358826625] [2021-11-02 22:21:10,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:10,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:21:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 22:21:10,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:21:10,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358826625] [2021-11-02 22:21:10,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358826625] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:21:10,767 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:21:10,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:21:10,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746159744] [2021-11-02 22:21:10,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:21:10,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:21:10,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:21:10,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:21:10,769 INFO L87 Difference]: Start difference. First operand 14721 states and 20111 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:22,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:21:22,816 INFO L93 Difference]: Finished difference Result 47028 states and 63174 transitions. [2021-11-02 22:21:22,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 22:21:22,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 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 175 [2021-11-02 22:21:22,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:21:22,893 INFO L225 Difference]: With dead ends: 47028 [2021-11-02 22:21:22,894 INFO L226 Difference]: Without dead ends: 34232 [2021-11-02 22:21:22,919 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:21:22,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34232 states. [2021-11-02 22:21:25,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34232 to 14739. [2021-11-02 22:21:25,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14739 states, 12850 states have (on average 1.3510505836575875) internal successors, (17361), 13262 states have internal predecessors, (17361), 1276 states have call successors, (1276), 612 states have call predecessors, (1276), 612 states have return successors, (1492), 1026 states have call predecessors, (1492), 1276 states have call successors, (1492) [2021-11-02 22:21:25,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14739 states to 14739 states and 20129 transitions. [2021-11-02 22:21:25,962 INFO L78 Accepts]: Start accepts. Automaton has 14739 states and 20129 transitions. Word has length 175 [2021-11-02 22:21:25,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:21:25,962 INFO L470 AbstractCegarLoop]: Abstraction has 14739 states and 20129 transitions. [2021-11-02 22:21:25,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 5 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:25,963 INFO L276 IsEmpty]: Start isEmpty. Operand 14739 states and 20129 transitions. [2021-11-02 22:21:25,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-02 22:21:25,984 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:21:25,985 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:21:25,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-02 22:21:25,985 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:21:25,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:21:25,986 INFO L85 PathProgramCache]: Analyzing trace with hash 496091690, now seen corresponding path program 1 times [2021-11-02 22:21:25,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:21:25,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024605942] [2021-11-02 22:21:25,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:25,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:21:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 22:21:26,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:21:26,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024605942] [2021-11-02 22:21:26,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024605942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:21:26,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:21:26,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 22:21:26,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569305202] [2021-11-02 22:21:26,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:21:26,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:21:26,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:21:26,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:21:26,481 INFO L87 Difference]: Start difference. First operand 14739 states and 20129 transitions. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:40,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:21:40,108 INFO L93 Difference]: Finished difference Result 47248 states and 63462 transitions. [2021-11-02 22:21:40,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 22:21:40,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 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 177 [2021-11-02 22:21:40,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:21:40,191 INFO L225 Difference]: With dead ends: 47248 [2021-11-02 22:21:40,191 INFO L226 Difference]: Without dead ends: 34434 [2021-11-02 22:21:40,220 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:21:40,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34434 states. [2021-11-02 22:21:43,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34434 to 14751. [2021-11-02 22:21:43,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14751 states, 12862 states have (on average 1.3507230601772664) internal successors, (17373), 13274 states have internal predecessors, (17373), 1276 states have call successors, (1276), 612 states have call predecessors, (1276), 612 states have return successors, (1492), 1026 states have call predecessors, (1492), 1276 states have call successors, (1492) [2021-11-02 22:21:43,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14751 states to 14751 states and 20141 transitions. [2021-11-02 22:21:43,231 INFO L78 Accepts]: Start accepts. Automaton has 14751 states and 20141 transitions. Word has length 177 [2021-11-02 22:21:43,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:21:43,231 INFO L470 AbstractCegarLoop]: Abstraction has 14751 states and 20141 transitions. [2021-11-02 22:21:43,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:43,232 INFO L276 IsEmpty]: Start isEmpty. Operand 14751 states and 20141 transitions. [2021-11-02 22:21:43,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-02 22:21:43,245 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:21:43,246 INFO L513 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:21:43,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-02 22:21:43,246 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:21:43,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:21:43,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1425931458, now seen corresponding path program 1 times [2021-11-02 22:21:43,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:21:43,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993156900] [2021-11-02 22:21:43,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:43,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:21:43,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:43,566 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-02 22:21:43,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:21:43,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993156900] [2021-11-02 22:21:43,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993156900] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:21:43,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938607736] [2021-11-02 22:21:43,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:43,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:21:43,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:21:43,569 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:21:43,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 22:21:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:45,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 4795 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:21:45,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:21:46,244 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 22:21:46,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938607736] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:21:46,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:21:46,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-02 22:21:46,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409212847] [2021-11-02 22:21:46,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:21:46,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:21:46,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:21:46,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:21:46,246 INFO L87 Difference]: Start difference. First operand 14751 states and 20141 transitions. Second operand has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:49,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:21:49,911 INFO L93 Difference]: Finished difference Result 27761 states and 37880 transitions. [2021-11-02 22:21:49,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:21:49,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 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 178 [2021-11-02 22:21:49,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:21:49,957 INFO L225 Difference]: With dead ends: 27761 [2021-11-02 22:21:49,958 INFO L226 Difference]: Without dead ends: 14935 [2021-11-02 22:21:49,984 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:21:49,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14935 states. [2021-11-02 22:21:52,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14935 to 14539. [2021-11-02 22:21:52,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14539 states, 12650 states have (on average 1.3483794466403163) internal successors, (17057), 13062 states have internal predecessors, (17057), 1276 states have call successors, (1276), 612 states have call predecessors, (1276), 612 states have return successors, (1492), 1026 states have call predecessors, (1492), 1276 states have call successors, (1492) [2021-11-02 22:21:52,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14539 states to 14539 states and 19825 transitions. [2021-11-02 22:21:52,759 INFO L78 Accepts]: Start accepts. Automaton has 14539 states and 19825 transitions. Word has length 178 [2021-11-02 22:21:52,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:21:52,760 INFO L470 AbstractCegarLoop]: Abstraction has 14539 states and 19825 transitions. [2021-11-02 22:21:52,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:21:52,760 INFO L276 IsEmpty]: Start isEmpty. Operand 14539 states and 19825 transitions. [2021-11-02 22:21:52,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-02 22:21:52,774 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:21:52,774 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:21:52,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-02 22:21:52,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:21:52,975 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:21:52,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:21:52,976 INFO L85 PathProgramCache]: Analyzing trace with hash 455757734, now seen corresponding path program 1 times [2021-11-02 22:21:52,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:21:52,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128241502] [2021-11-02 22:21:52,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:21:52,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:21:54,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:21:54,658 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-02 22:21:54,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:21:54,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128241502] [2021-11-02 22:21:54,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128241502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:21:54,659 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:21:54,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 22:21:54,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027442103] [2021-11-02 22:21:54,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 22:21:54,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:21:54,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 22:21:54,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-02 22:21:54,662 INFO L87 Difference]: Start difference. First operand 14539 states and 19825 transitions. Second operand has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:17,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:17,432 INFO L93 Difference]: Finished difference Result 36835 states and 49535 transitions. [2021-11-02 22:22:17,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-11-02 22:22:17,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 179 [2021-11-02 22:22:17,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:17,512 INFO L225 Difference]: With dead ends: 36835 [2021-11-02 22:22:17,512 INFO L226 Difference]: Without dead ends: 24221 [2021-11-02 22:22:17,537 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=516, Invalid=1836, Unknown=0, NotChecked=0, Total=2352 [2021-11-02 22:22:17,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24221 states. [2021-11-02 22:22:20,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24221 to 14539. [2021-11-02 22:22:20,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14539 states, 12650 states have (on average 1.346482213438735) internal successors, (17033), 13062 states have internal predecessors, (17033), 1276 states have call successors, (1276), 612 states have call predecessors, (1276), 612 states have return successors, (1492), 1026 states have call predecessors, (1492), 1276 states have call successors, (1492) [2021-11-02 22:22:20,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14539 states to 14539 states and 19801 transitions. [2021-11-02 22:22:20,427 INFO L78 Accepts]: Start accepts. Automaton has 14539 states and 19801 transitions. Word has length 179 [2021-11-02 22:22:20,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:20,428 INFO L470 AbstractCegarLoop]: Abstraction has 14539 states and 19801 transitions. [2021-11-02 22:22:20,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:20,428 INFO L276 IsEmpty]: Start isEmpty. Operand 14539 states and 19801 transitions. [2021-11-02 22:22:20,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-02 22:22:20,444 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:20,444 INFO L513 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:20,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-02 22:22:20,444 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:22:20,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:20,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1348380585, now seen corresponding path program 1 times [2021-11-02 22:22:20,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:20,445 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049711751] [2021-11-02 22:22:20,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:20,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:20,813 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-02 22:22:20,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:20,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049711751] [2021-11-02 22:22:20,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049711751] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 22:22:20,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288103211] [2021-11-02 22:22:20,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:20,815 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 22:22:20,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:22:20,822 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-02 22:22:20,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 22:22:22,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:23,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 4851 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:22:23,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:22:23,561 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-02 22:22:23,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288103211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:22:23,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 22:22:23,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2021-11-02 22:22:23,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493788125] [2021-11-02 22:22:23,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:22:23,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:23,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:22:23,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:22:23,564 INFO L87 Difference]: Start difference. First operand 14539 states and 19801 transitions. Second operand has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:27,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:22:27,392 INFO L93 Difference]: Finished difference Result 28889 states and 39224 transitions. [2021-11-02 22:22:27,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:22:27,393 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 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 184 [2021-11-02 22:22:27,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:22:27,437 INFO L225 Difference]: With dead ends: 28889 [2021-11-02 22:22:27,437 INFO L226 Difference]: Without dead ends: 16275 [2021-11-02 22:22:27,462 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-02 22:22:27,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16275 states. [2021-11-02 22:22:30,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16275 to 14545. [2021-11-02 22:22:30,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14545 states, 12656 states have (on average 1.3460018963337548) internal successors, (17035), 13068 states have internal predecessors, (17035), 1276 states have call successors, (1276), 612 states have call predecessors, (1276), 612 states have return successors, (1492), 1026 states have call predecessors, (1492), 1276 states have call successors, (1492) [2021-11-02 22:22:30,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14545 states to 14545 states and 19803 transitions. [2021-11-02 22:22:30,316 INFO L78 Accepts]: Start accepts. Automaton has 14545 states and 19803 transitions. Word has length 184 [2021-11-02 22:22:30,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:22:30,317 INFO L470 AbstractCegarLoop]: Abstraction has 14545 states and 19803 transitions. [2021-11-02 22:22:30,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.166666666666668) internal successors, (181), 6 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 22:22:30,317 INFO L276 IsEmpty]: Start isEmpty. Operand 14545 states and 19803 transitions. [2021-11-02 22:22:30,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-02 22:22:30,330 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:22:30,331 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:22:30,366 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-02 22:22:30,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d6578f4-eb9a-48d3-8f70-b591d1f1b475/bin/uautomizer-tBqnrhUYjU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-11-02 22:22:30,531 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2021-11-02 22:22:30,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:22:30,532 INFO L85 PathProgramCache]: Analyzing trace with hash 98537875, now seen corresponding path program 1 times [2021-11-02 22:22:30,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 22:22:30,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533398675] [2021-11-02 22:22:30,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:22:30,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 22:22:52,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:22:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-02 22:22:54,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 22:22:54,181 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533398675] [2021-11-02 22:22:54,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533398675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 22:22:54,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:22:54,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-02 22:22:54,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019839545] [2021-11-02 22:22:54,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-02 22:22:54,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 22:22:54,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-02 22:22:54,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-11-02 22:22:54,184 INFO L87 Difference]: Start difference. First operand 14545 states and 19803 transitions. Second operand has 12 states, 12 states have (on average 15.0) internal successors, (180), 12 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)