./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_bbcc65b8-19f8-4e10-b1d5-59e87ee08c2d/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcc65b8-19f8-4e10-b1d5-59e87ee08c2d/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_bbcc65b8-19f8-4e10-b1d5-59e87ee08c2d/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcc65b8-19f8-4e10-b1d5-59e87ee08c2d/bin/uautomizer-tBqnrhUYjU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcc65b8-19f8-4e10-b1d5-59e87ee08c2d/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcc65b8-19f8-4e10-b1d5-59e87ee08c2d/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 32bit --witnessprinter.graph.data.programhash 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 23:02:13,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 23:02:13,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 23:02:13,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 23:02:13,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 23:02:13,729 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 23:02:13,731 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 23:02:13,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 23:02:13,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 23:02:13,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 23:02:13,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 23:02:13,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 23:02:13,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 23:02:13,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 23:02:13,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 23:02:13,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 23:02:13,762 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 23:02:13,765 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 23:02:13,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 23:02:13,773 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 23:02:13,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 23:02:13,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 23:02:13,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 23:02:13,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 23:02:13,793 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 23:02:13,793 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 23:02:13,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 23:02:13,796 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 23:02:13,797 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 23:02:13,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 23:02:13,800 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 23:02:13,801 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 23:02:13,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 23:02:13,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 23:02:13,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 23:02:13,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 23:02:13,807 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 23:02:13,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 23:02:13,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 23:02:13,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 23:02:13,809 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 23:02:13,810 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcc65b8-19f8-4e10-b1d5-59e87ee08c2d/bin/uautomizer-tBqnrhUYjU/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-02 23:02:13,859 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 23:02:13,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 23:02:13,864 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 23:02:13,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 23:02:13,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 23:02:13,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 23:02:13,875 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 23:02:13,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 23:02:13,875 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 23:02:13,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 23:02:13,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 23:02:13,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 23:02:13,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 23:02:13,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 23:02:13,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 23:02:13,879 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 23:02:13,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 23:02:13,879 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 23:02:13,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 23:02:13,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 23:02:13,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 23:02:13,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 23:02:13,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:02:13,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 23:02:13,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 23:02:13,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 23:02:13,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 23:02:13,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 23:02:13,882 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 23:02:13,884 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 23:02:13,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 23:02:13,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 23:02:13,886 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_bbcc65b8-19f8-4e10-b1d5-59e87ee08c2d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcc65b8-19f8-4e10-b1d5-59e87ee08c2d/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 89950477a2818e2be847e3014c0e2f9e906834037b4e328723302699ed4d9564 [2021-11-02 23:02:14,209 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 23:02:14,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 23:02:14,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 23:02:14,241 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 23:02:14,242 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 23:02:14,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcc65b8-19f8-4e10-b1d5-59e87ee08c2d/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2021-11-02 23:02:14,317 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcc65b8-19f8-4e10-b1d5-59e87ee08c2d/bin/uautomizer-tBqnrhUYjU/data/11ed97c45/ef62245367a842e391f85a8ce836b9a2/FLAGf88af161e [2021-11-02 23:02:15,147 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 23:02:15,147 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcc65b8-19f8-4e10-b1d5-59e87ee08c2d/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c [2021-11-02 23:02:15,182 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcc65b8-19f8-4e10-b1d5-59e87ee08c2d/bin/uautomizer-tBqnrhUYjU/data/11ed97c45/ef62245367a842e391f85a8ce836b9a2/FLAGf88af161e [2021-11-02 23:02:15,301 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcc65b8-19f8-4e10-b1d5-59e87ee08c2d/bin/uautomizer-tBqnrhUYjU/data/11ed97c45/ef62245367a842e391f85a8ce836b9a2 [2021-11-02 23:02:15,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 23:02:15,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 23:02:15,311 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 23:02:15,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 23:02:15,321 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 23:02:15,322 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:02:15" (1/1) ... [2021-11-02 23:02:15,324 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44a09407 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:15, skipping insertion in model container [2021-11-02 23:02:15,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:02:15" (1/1) ... [2021-11-02 23:02:15,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 23:02:15,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 23:02:16,115 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_bbcc65b8-19f8-4e10-b1d5-59e87ee08c2d/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c[51490,51503] [2021-11-02 23:02:16,153 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:02:16,165 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 23:02:16,256 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_bbcc65b8-19f8-4e10-b1d5-59e87ee08c2d/sv-benchmarks/c/product-lines/elevator_spec13_product24.cil.c[51490,51503] [2021-11-02 23:02:16,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 23:02:16,316 INFO L208 MainTranslator]: Completed translation [2021-11-02 23:02:16,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:16 WrapperNode [2021-11-02 23:02:16,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 23:02:16,318 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 23:02:16,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 23:02:16,319 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 23:02:16,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:16" (1/1) ... [2021-11-02 23:02:16,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:16" (1/1) ... [2021-11-02 23:02:17,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 23:02:17,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 23:02:17,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 23:02:17,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 23:02:17,426 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:16" (1/1) ... [2021-11-02 23:02:17,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:16" (1/1) ... [2021-11-02 23:02:17,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:16" (1/1) ... [2021-11-02 23:02:17,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:16" (1/1) ... [2021-11-02 23:02:18,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:16" (1/1) ... [2021-11-02 23:02:18,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:16" (1/1) ... [2021-11-02 23:02:18,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:16" (1/1) ... [2021-11-02 23:02:19,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 23:02:19,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 23:02:19,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 23:02:19,097 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 23:02:19,098 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:16" (1/1) ... [2021-11-02 23:02:19,107 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 23:02:19,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcc65b8-19f8-4e10-b1d5-59e87ee08c2d/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 23:02:19,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcc65b8-19f8-4e10-b1d5-59e87ee08c2d/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 23:02:19,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bbcc65b8-19f8-4e10-b1d5-59e87ee08c2d/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 23:02:19,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 23:02:19,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 23:02:19,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 23:02:19,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 23:02:46,095 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 23:02:46,095 INFO L299 CfgBuilder]: Removed 3931 assume(true) statements. [2021-11-02 23:02:46,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:02:46 BoogieIcfgContainer [2021-11-02 23:02:46,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 23:02:46,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 23:02:46,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 23:02:46,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 23:02:46,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:02:15" (1/3) ... [2021-11-02 23:02:46,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e98207a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:02:46, skipping insertion in model container [2021-11-02 23:02:46,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:02:16" (2/3) ... [2021-11-02 23:02:46,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e98207a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:02:46, skipping insertion in model container [2021-11-02 23:02:46,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:02:46" (3/3) ... [2021-11-02 23:02:46,123 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product24.cil.c [2021-11-02 23:02:46,129 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 23:02:46,130 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-11-02 23:02:46,246 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 23:02:46,254 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 23:02:46,254 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-11-02 23:02:46,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 17686 states, 17675 states have (on average 1.8913154172560114) internal successors, (33429), 17685 states have internal predecessors, (33429), 0 states have call successors, (0), 0 states 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 23:02:46,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-02 23:02:46,567 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:02:46,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:02:46,569 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:02:46,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:02:46,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1503120771, now seen corresponding path program 1 times [2021-11-02 23:02:46,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:02:46,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658436349] [2021-11-02 23:02:46,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:46,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:02:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:47,035 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 23:02:47,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:02:47,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658436349] [2021-11-02 23:02:47,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658436349] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:02:47,038 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:02:47,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:02:47,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599241062] [2021-11-02 23:02:47,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:02:47,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:02:47,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:02:47,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:02:47,126 INFO L87 Difference]: Start difference. First operand has 17686 states, 17675 states have (on average 1.8913154172560114) internal successors, (33429), 17685 states have internal predecessors, (33429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:02:49,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:02:49,236 INFO L93 Difference]: Finished difference Result 42448 states and 80232 transitions. [2021-11-02 23:02:49,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:02:49,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2021-11-02 23:02:49,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:02:49,464 INFO L225 Difference]: With dead ends: 42448 [2021-11-02 23:02:49,464 INFO L226 Difference]: Without dead ends: 24766 [2021-11-02 23:02:49,508 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:02:49,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24766 states. [2021-11-02 23:02:50,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24766 to 17682. [2021-11-02 23:02:50,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17682 states, 17672 states have (on average 1.883657763693979) internal successors, (33288), 17681 states have internal predecessors, (33288), 0 states have call successors, (0), 0 states 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 23:02:50,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17682 states to 17682 states and 33288 transitions. [2021-11-02 23:02:50,678 INFO L78 Accepts]: Start accepts. Automaton has 17682 states and 33288 transitions. Word has length 41 [2021-11-02 23:02:50,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:02:50,679 INFO L470 AbstractCegarLoop]: Abstraction has 17682 states and 33288 transitions. [2021-11-02 23:02:50,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:02:50,680 INFO L276 IsEmpty]: Start isEmpty. Operand 17682 states and 33288 transitions. [2021-11-02 23:02:50,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-02 23:02:50,683 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:02:50,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:02:50,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 23:02:50,685 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:02:50,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:02:50,686 INFO L85 PathProgramCache]: Analyzing trace with hash -502819147, now seen corresponding path program 1 times [2021-11-02 23:02:50,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:02:50,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170940615] [2021-11-02 23:02:50,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:50,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:02:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:50,784 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 23:02:50,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:02:50,785 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170940615] [2021-11-02 23:02:50,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170940615] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:02:50,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:02:50,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:02:50,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616320275] [2021-11-02 23:02:50,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:02:50,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:02:50,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:02:50,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:02:50,789 INFO L87 Difference]: Start difference. First operand 17682 states and 33288 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:02:53,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:02:53,381 INFO L93 Difference]: Finished difference Result 70490 states and 132698 transitions. [2021-11-02 23:02:53,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:02:53,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-02 23:02:53,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:02:53,627 INFO L225 Difference]: With dead ends: 70490 [2021-11-02 23:02:53,628 INFO L226 Difference]: Without dead ends: 52831 [2021-11-02 23:02:53,676 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 23:02:53,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52831 states. [2021-11-02 23:02:54,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52831 to 17697. [2021-11-02 23:02:54,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17697 states, 17687 states have (on average 1.8829083507660993) internal successors, (33303), 17696 states have internal predecessors, (33303), 0 states have call successors, (0), 0 states 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 23:02:55,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17697 states to 17697 states and 33303 transitions. [2021-11-02 23:02:55,172 INFO L78 Accepts]: Start accepts. Automaton has 17697 states and 33303 transitions. Word has length 43 [2021-11-02 23:02:55,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:02:55,173 INFO L470 AbstractCegarLoop]: Abstraction has 17697 states and 33303 transitions. [2021-11-02 23:02:55,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:02:55,174 INFO L276 IsEmpty]: Start isEmpty. Operand 17697 states and 33303 transitions. [2021-11-02 23:02:55,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-02 23:02:55,181 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:02:55,181 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:02:55,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 23:02:55,183 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:02:55,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:02:55,184 INFO L85 PathProgramCache]: Analyzing trace with hash 53260963, now seen corresponding path program 1 times [2021-11-02 23:02:55,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:02:55,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959849533] [2021-11-02 23:02:55,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:55,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:02:55,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:55,293 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 23:02:55,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:02:55,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959849533] [2021-11-02 23:02:55,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959849533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:02:55,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:02:55,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:02:55,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214482805] [2021-11-02 23:02:55,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:02:55,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:02:55,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:02:55,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:02:55,297 INFO L87 Difference]: Start difference. First operand 17697 states and 33303 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:02:56,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:02:56,618 INFO L93 Difference]: Finished difference Result 52902 states and 99572 transitions. [2021-11-02 23:02:56,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:02:56,619 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2021-11-02 23:02:56,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:02:56,736 INFO L225 Difference]: With dead ends: 52902 [2021-11-02 23:02:56,737 INFO L226 Difference]: Without dead ends: 35218 [2021-11-02 23:02:56,766 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 23:02:56,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35218 states. [2021-11-02 23:02:57,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35218 to 17663. [2021-11-02 23:02:57,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17663 states, 17653 states have (on average 1.8826828301138616) internal successors, (33235), 17662 states have internal predecessors, (33235), 0 states have call successors, (0), 0 states 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 23:02:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17663 states to 17663 states and 33235 transitions. [2021-11-02 23:02:57,742 INFO L78 Accepts]: Start accepts. Automaton has 17663 states and 33235 transitions. Word has length 45 [2021-11-02 23:02:57,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:02:57,742 INFO L470 AbstractCegarLoop]: Abstraction has 17663 states and 33235 transitions. [2021-11-02 23:02:57,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:02:57,743 INFO L276 IsEmpty]: Start isEmpty. Operand 17663 states and 33235 transitions. [2021-11-02 23:02:57,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-02 23:02:57,746 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:02:57,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 23:02:57,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 23:02:57,747 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:02:57,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:02:57,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1858063920, now seen corresponding path program 1 times [2021-11-02 23:02:57,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:02:57,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079221779] [2021-11-02 23:02:57,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:02:57,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:02:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:02:57,876 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 23:02:57,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:02:57,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079221779] [2021-11-02 23:02:57,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079221779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:02:57,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:02:57,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:02:57,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058905422] [2021-11-02 23:02:57,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 23:02:57,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:02:57,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 23:02:57,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 23:02:57,886 INFO L87 Difference]: Start difference. First operand 17663 states and 33235 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:02:59,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:02:59,651 INFO L93 Difference]: Finished difference Result 42355 states and 79707 transitions. [2021-11-02 23:02:59,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:02:59,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-11-02 23:02:59,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:02:59,772 INFO L225 Difference]: With dead ends: 42355 [2021-11-02 23:02:59,773 INFO L226 Difference]: Without dead ends: 24711 [2021-11-02 23:02:59,798 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 23:02:59,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24711 states. [2021-11-02 23:03:00,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24711 to 17663. [2021-11-02 23:03:00,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17663 states, 17653 states have (on average 1.8823429445420041) internal successors, (33229), 17662 states have internal predecessors, (33229), 0 states have call successors, (0), 0 states 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 23:03:00,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17663 states to 17663 states and 33229 transitions. [2021-11-02 23:03:00,638 INFO L78 Accepts]: Start accepts. Automaton has 17663 states and 33229 transitions. Word has length 47 [2021-11-02 23:03:00,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:03:00,639 INFO L470 AbstractCegarLoop]: Abstraction has 17663 states and 33229 transitions. [2021-11-02 23:03:00,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:03:00,639 INFO L276 IsEmpty]: Start isEmpty. Operand 17663 states and 33229 transitions. [2021-11-02 23:03:00,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-02 23:03:00,642 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:03:00,642 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, 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 23:03:00,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 23:03:00,642 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:03:00,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:03:00,643 INFO L85 PathProgramCache]: Analyzing trace with hash -68318262, now seen corresponding path program 1 times [2021-11-02 23:03:00,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:03:00,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839366111] [2021-11-02 23:03:00,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:03:00,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:03:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:03:00,713 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 23:03:00,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:03:00,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839366111] [2021-11-02 23:03:00,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839366111] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:03:00,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:03:00,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:03:00,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133568076] [2021-11-02 23:03:00,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:03:00,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:03:00,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:03:00,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:03:00,716 INFO L87 Difference]: Start difference. First operand 17663 states and 33229 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 23:03:02,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:03:02,811 INFO L93 Difference]: Finished difference Result 70432 states and 132551 transitions. [2021-11-02 23:03:02,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:03:02,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-11-02 23:03:02,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:03:03,229 INFO L225 Difference]: With dead ends: 70432 [2021-11-02 23:03:03,229 INFO L226 Difference]: Without dead ends: 52794 [2021-11-02 23:03:03,261 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 23:03:03,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52794 states. [2021-11-02 23:03:04,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52794 to 17667. [2021-11-02 23:03:04,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17667 states, 17657 states have (on average 1.8820864246474487) internal successors, (33232), 17666 states have internal predecessors, (33232), 0 states have call successors, (0), 0 states 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 23:03:04,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17667 states to 17667 states and 33232 transitions. [2021-11-02 23:03:04,140 INFO L78 Accepts]: Start accepts. Automaton has 17667 states and 33232 transitions. Word has length 49 [2021-11-02 23:03:04,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:03:04,141 INFO L470 AbstractCegarLoop]: Abstraction has 17667 states and 33232 transitions. [2021-11-02 23:03:04,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states 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 23:03:04,142 INFO L276 IsEmpty]: Start isEmpty. Operand 17667 states and 33232 transitions. [2021-11-02 23:03:04,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-02 23:03:04,345 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:03:04,346 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, 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 23:03:04,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 23:03:04,346 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:03:04,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:03:04,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1698304076, now seen corresponding path program 1 times [2021-11-02 23:03:04,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:03:04,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287485571] [2021-11-02 23:03:04,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:03:04,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:03:04,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:03:04,432 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 23:03:04,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:03:04,432 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287485571] [2021-11-02 23:03:04,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287485571] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:03:04,433 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:03:04,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:03:04,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925402886] [2021-11-02 23:03:04,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:03:04,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:03:04,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:03:04,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:03:04,437 INFO L87 Difference]: Start difference. First operand 17667 states and 33232 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 23:03:06,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:03:06,387 INFO L93 Difference]: Finished difference Result 70441 states and 132557 transitions. [2021-11-02 23:03:06,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:03:06,388 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2021-11-02 23:03:06,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:03:06,554 INFO L225 Difference]: With dead ends: 70441 [2021-11-02 23:03:06,554 INFO L226 Difference]: Without dead ends: 52799 [2021-11-02 23:03:06,591 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 23:03:06,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52799 states. [2021-11-02 23:03:07,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52799 to 17673. [2021-11-02 23:03:07,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17673 states, 17663 states have (on average 1.8817301704127272) internal successors, (33237), 17672 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states 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 23:03:07,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17673 states to 17673 states and 33237 transitions. [2021-11-02 23:03:07,747 INFO L78 Accepts]: Start accepts. Automaton has 17673 states and 33237 transitions. Word has length 50 [2021-11-02 23:03:07,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:03:07,747 INFO L470 AbstractCegarLoop]: Abstraction has 17673 states and 33237 transitions. [2021-11-02 23:03:07,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 23:03:07,748 INFO L276 IsEmpty]: Start isEmpty. Operand 17673 states and 33237 transitions. [2021-11-02 23:03:07,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-02 23:03:07,750 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:03:07,751 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, 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 23:03:07,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 23:03:07,751 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:03:07,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:03:07,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1278260495, now seen corresponding path program 1 times [2021-11-02 23:03:07,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:03:07,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166707485] [2021-11-02 23:03:07,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:03:07,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:03:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:03:07,824 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 23:03:07,825 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:03:07,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166707485] [2021-11-02 23:03:07,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166707485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:03:07,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:03:07,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:03:07,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530543686] [2021-11-02 23:03:07,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:03:07,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:03:07,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:03:07,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:03:07,828 INFO L87 Difference]: Start difference. First operand 17673 states and 33237 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 23:03:09,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:03:09,986 INFO L93 Difference]: Finished difference Result 70454 states and 132567 transitions. [2021-11-02 23:03:09,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:03:09,987 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-02 23:03:09,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:03:10,125 INFO L225 Difference]: With dead ends: 70454 [2021-11-02 23:03:10,125 INFO L226 Difference]: Without dead ends: 52806 [2021-11-02 23:03:10,148 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 23:03:10,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52806 states. [2021-11-02 23:03:11,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52806 to 17681. [2021-11-02 23:03:11,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17681 states, 17671 states have (on average 1.8812744043913756) internal successors, (33244), 17680 states have internal predecessors, (33244), 0 states have call successors, (0), 0 states 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 23:03:11,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17681 states to 17681 states and 33244 transitions. [2021-11-02 23:03:11,421 INFO L78 Accepts]: Start accepts. Automaton has 17681 states and 33244 transitions. Word has length 51 [2021-11-02 23:03:11,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:03:11,421 INFO L470 AbstractCegarLoop]: Abstraction has 17681 states and 33244 transitions. [2021-11-02 23:03:11,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 23:03:11,422 INFO L276 IsEmpty]: Start isEmpty. Operand 17681 states and 33244 transitions. [2021-11-02 23:03:11,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-02 23:03:11,424 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:03:11,424 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, 1, 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 23:03:11,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 23:03:11,424 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:03:11,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:03:11,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1028998937, now seen corresponding path program 1 times [2021-11-02 23:03:11,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:03:11,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835322967] [2021-11-02 23:03:11,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:03:11,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:03:11,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:03:11,500 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 23:03:11,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:03:11,501 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835322967] [2021-11-02 23:03:11,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835322967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:03:11,502 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:03:11,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 23:03:11,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735153564] [2021-11-02 23:03:11,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:03:11,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:03:11,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:03:11,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:03:11,504 INFO L87 Difference]: Start difference. First operand 17681 states and 33244 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 23:03:13,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:03:13,017 INFO L93 Difference]: Finished difference Result 42429 states and 79796 transitions. [2021-11-02 23:03:13,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 23:03:13,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2021-11-02 23:03:13,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:03:13,059 INFO L225 Difference]: With dead ends: 42429 [2021-11-02 23:03:13,059 INFO L226 Difference]: Without dead ends: 24777 [2021-11-02 23:03:13,077 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 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 23:03:13,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24777 states. [2021-11-02 23:03:13,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24777 to 17673. [2021-11-02 23:03:13,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17673 states, 17663 states have (on average 1.8808243220291003) internal successors, (33221), 17672 states have internal predecessors, (33221), 0 states have call successors, (0), 0 states 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 23:03:14,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17673 states to 17673 states and 33221 transitions. [2021-11-02 23:03:14,014 INFO L78 Accepts]: Start accepts. Automaton has 17673 states and 33221 transitions. Word has length 52 [2021-11-02 23:03:14,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:03:14,017 INFO L470 AbstractCegarLoop]: Abstraction has 17673 states and 33221 transitions. [2021-11-02 23:03:14,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 23:03:14,018 INFO L276 IsEmpty]: Start isEmpty. Operand 17673 states and 33221 transitions. [2021-11-02 23:03:14,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-02 23:03:14,023 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:03:14,023 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, 1, 1, 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 23:03:14,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 23:03:14,024 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:03:14,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:03:14,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1874204241, now seen corresponding path program 1 times [2021-11-02 23:03:14,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:03:14,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992606195] [2021-11-02 23:03:14,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:03:14,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:03:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:03:14,327 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 23:03:14,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:03:14,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992606195] [2021-11-02 23:03:14,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992606195] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:03:14,328 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:03:14,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 23:03:14,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758332605] [2021-11-02 23:03:14,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 23:03:14,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:03:14,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 23:03:14,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 23:03:14,335 INFO L87 Difference]: Start difference. First operand 17673 states and 33221 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:03:16,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:03:16,863 INFO L93 Difference]: Finished difference Result 47721 states and 89739 transitions. [2021-11-02 23:03:16,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 23:03:16,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-11-02 23:03:16,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:03:16,921 INFO L225 Difference]: With dead ends: 47721 [2021-11-02 23:03:16,921 INFO L226 Difference]: Without dead ends: 33472 [2021-11-02 23:03:16,940 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 23:03:16,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33472 states. [2021-11-02 23:03:18,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33472 to 28500. [2021-11-02 23:03:18,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28500 states, 28490 states have (on average 1.8784134784134785) internal successors, (53516), 28499 states have internal predecessors, (53516), 0 states have call successors, (0), 0 states 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 23:03:18,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28500 states to 28500 states and 53516 transitions. [2021-11-02 23:03:18,380 INFO L78 Accepts]: Start accepts. Automaton has 28500 states and 53516 transitions. Word has length 53 [2021-11-02 23:03:18,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:03:18,381 INFO L470 AbstractCegarLoop]: Abstraction has 28500 states and 53516 transitions. [2021-11-02 23:03:18,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-02 23:03:18,381 INFO L276 IsEmpty]: Start isEmpty. Operand 28500 states and 53516 transitions. [2021-11-02 23:03:18,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 23:03:18,388 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:03:18,388 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:18,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 23:03:18,388 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:03:18,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:03:18,389 INFO L85 PathProgramCache]: Analyzing trace with hash -347860639, now seen corresponding path program 1 times [2021-11-02 23:03:18,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:03:18,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509855247] [2021-11-02 23:03:18,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:03:18,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:03:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:03:18,502 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 23:03:18,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:03:18,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509855247] [2021-11-02 23:03:18,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509855247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:03:18,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:03:18,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 23:03:18,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136560569] [2021-11-02 23:03:18,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 23:03:18,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:03:18,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 23:03:18,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-02 23:03:18,506 INFO L87 Difference]: Start difference. First operand 28500 states and 53516 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 23:03:22,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:03:22,036 INFO L93 Difference]: Finished difference Result 75292 states and 140114 transitions. [2021-11-02 23:03:22,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-02 23:03:22,037 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-11-02 23:03:22,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:03:22,128 INFO L225 Difference]: With dead ends: 75292 [2021-11-02 23:03:22,128 INFO L226 Difference]: Without dead ends: 48028 [2021-11-02 23:03:22,151 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-02 23:03:22,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48028 states. [2021-11-02 23:03:23,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48028 to 27687. [2021-11-02 23:03:23,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27687 states, 27677 states have (on average 1.864905878527297) internal successors, (51615), 27686 states have internal predecessors, (51615), 0 states have call successors, (0), 0 states 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 23:03:23,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27687 states to 27687 states and 51615 transitions. [2021-11-02 23:03:23,892 INFO L78 Accepts]: Start accepts. Automaton has 27687 states and 51615 transitions. Word has length 72 [2021-11-02 23:03:23,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:03:23,893 INFO L470 AbstractCegarLoop]: Abstraction has 27687 states and 51615 transitions. [2021-11-02 23:03:23,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 23:03:23,893 INFO L276 IsEmpty]: Start isEmpty. Operand 27687 states and 51615 transitions. [2021-11-02 23:03:23,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-02 23:03:23,898 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:03:23,899 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:23,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 23:03:23,899 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:03:23,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:03:23,900 INFO L85 PathProgramCache]: Analyzing trace with hash -865765851, now seen corresponding path program 1 times [2021-11-02 23:03:23,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:03:23,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343052447] [2021-11-02 23:03:23,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:03:23,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:03:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:03:23,967 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 23:03:23,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:03:23,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343052447] [2021-11-02 23:03:23,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343052447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:03:23,968 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:03:23,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 23:03:23,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135472389] [2021-11-02 23:03:23,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 23:03:23,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:03:23,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 23:03:23,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 23:03:23,970 INFO L87 Difference]: Start difference. First operand 27687 states and 51615 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 23:03:33,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 23:03:33,887 INFO L93 Difference]: Finished difference Result 75448 states and 140298 transitions. [2021-11-02 23:03:33,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 23:03:33,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-11-02 23:03:33,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 23:03:33,972 INFO L225 Difference]: With dead ends: 75448 [2021-11-02 23:03:33,972 INFO L226 Difference]: Without dead ends: 47852 [2021-11-02 23:03:33,993 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 23:03:34,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47852 states. [2021-11-02 23:03:35,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47852 to 27687. [2021-11-02 23:03:35,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27687 states, 27677 states have (on average 1.8195613686454457) internal successors, (50360), 27686 states have internal predecessors, (50360), 0 states have call successors, (0), 0 states 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 23:03:35,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27687 states to 27687 states and 50360 transitions. [2021-11-02 23:03:35,650 INFO L78 Accepts]: Start accepts. Automaton has 27687 states and 50360 transitions. Word has length 73 [2021-11-02 23:03:35,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 23:03:35,650 INFO L470 AbstractCegarLoop]: Abstraction has 27687 states and 50360 transitions. [2021-11-02 23:03:35,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 23:03:35,651 INFO L276 IsEmpty]: Start isEmpty. Operand 27687 states and 50360 transitions. [2021-11-02 23:03:35,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-02 23:03:35,655 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 23:03:35,655 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:35,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 23:03:35,656 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-02 23:03:35,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 23:03:35,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1397456529, now seen corresponding path program 1 times [2021-11-02 23:03:35,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 23:03:35,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987420447] [2021-11-02 23:03:35,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 23:03:35,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 23:03:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 23:03:35,763 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 23:03:35,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 23:03:35,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987420447] [2021-11-02 23:03:35,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987420447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 23:03:35,764 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 23:03:35,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 23:03:35,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634679669] [2021-11-02 23:03:35,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 23:03:35,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 23:03:35,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 23:03:35,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 23:03:35,767 INFO L87 Difference]: Start difference. First operand 27687 states and 50360 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 5 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)