./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/bin/uautomizer-w2VwFs6gM0 --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 d7b83251f9a608d2befdac3ab06beaba9889f30d8ab1cb865fc88ebdabcb52dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:33:50,555 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:33:50,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:33:50,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:33:50,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:33:50,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:33:50,622 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:33:50,626 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:33:50,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:33:50,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:33:50,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:33:50,642 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:33:50,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:33:50,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:33:50,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:33:50,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:33:50,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:33:50,674 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:33:50,676 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:33:50,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:33:50,686 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:33:50,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:33:50,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:33:50,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:33:50,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:33:50,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:33:50,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:33:50,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:33:50,709 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:33:50,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:33:50,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:33:50,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:33:50,722 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:33:50,723 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:33:50,724 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:33:50,725 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:33:50,725 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:33:50,726 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:33:50,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:33:50,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:33:50,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:33:50,730 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:33:50,781 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:33:50,782 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:33:50,782 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:33:50,783 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:33:50,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:33:50,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:33:50,785 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:33:50,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:33:50,785 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:33:50,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:33:50,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:33:50,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:33:50,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:33:50,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:33:50,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:33:50,787 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:33:50,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:33:50,788 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:33:50,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:33:50,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:33:50,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:33:50,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:33:50,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:33:50,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:33:50,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:33:50,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:33:50,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:33:50,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:33:50,790 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:33:50,790 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:33:50,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:33:50,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:33:50,791 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_7f8cfdfb-109a-4dc9-8033-5e006299b26b/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b83251f9a608d2befdac3ab06beaba9889f30d8ab1cb865fc88ebdabcb52dd [2021-11-22 15:33:51,076 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:33:51,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:33:51,118 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:33:51,120 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:33:51,120 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:33:51,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2021-11-22 15:33:51,216 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/bin/uautomizer-w2VwFs6gM0/data/98db72c41/5a686367b9354225951d02686ccced57/FLAG08a5a8e00 [2021-11-22 15:33:51,907 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:33:51,908 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2021-11-22 15:33:51,924 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/bin/uautomizer-w2VwFs6gM0/data/98db72c41/5a686367b9354225951d02686ccced57/FLAG08a5a8e00 [2021-11-22 15:33:52,179 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/bin/uautomizer-w2VwFs6gM0/data/98db72c41/5a686367b9354225951d02686ccced57 [2021-11-22 15:33:52,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:33:52,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:33:52,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:33:52,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:33:52,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:33:52,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:33:52" (1/1) ... [2021-11-22 15:33:52,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@614d071b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:52, skipping insertion in model container [2021-11-22 15:33:52,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:33:52" (1/1) ... [2021-11-22 15:33:52,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:33:52,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:33:52,425 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[914,927] [2021-11-22 15:33:52,489 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[7115,7128] [2021-11-22 15:33:52,614 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:33:52,625 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:33:52,657 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[914,927] [2021-11-22 15:33:52,685 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.07.cil-2.c[7115,7128] [2021-11-22 15:33:52,739 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:33:52,779 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:33:52,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:52 WrapperNode [2021-11-22 15:33:52,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:33:52,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:33:52,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:33:52,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:33:52,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:52" (1/1) ... [2021-11-22 15:33:52,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:52" (1/1) ... [2021-11-22 15:33:52,930 INFO L137 Inliner]: procedures = 67, calls = 79, calls flagged for inlining = 74, calls inlined = 162, statements flattened = 2416 [2021-11-22 15:33:52,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:33:52,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:33:52,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:33:52,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:33:52,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:52" (1/1) ... [2021-11-22 15:33:52,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:52" (1/1) ... [2021-11-22 15:33:52,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:52" (1/1) ... [2021-11-22 15:33:52,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:52" (1/1) ... [2021-11-22 15:33:53,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:52" (1/1) ... [2021-11-22 15:33:53,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:52" (1/1) ... [2021-11-22 15:33:53,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:52" (1/1) ... [2021-11-22 15:33:53,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:33:53,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:33:53,057 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:33:53,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:33:53,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:52" (1/1) ... [2021-11-22 15:33:53,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:33:53,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:33:53,097 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:33:53,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:33:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:33:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:33:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:33:53,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:33:53,266 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:33:53,268 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:33:55,058 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:33:55,084 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:33:55,084 INFO L301 CfgBuilder]: Removed 14 assume(true) statements. [2021-11-22 15:33:55,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:33:55 BoogieIcfgContainer [2021-11-22 15:33:55,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:33:55,092 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:33:55,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:33:55,096 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:33:55,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:33:52" (1/3) ... [2021-11-22 15:33:55,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d5a52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:33:55, skipping insertion in model container [2021-11-22 15:33:55,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:33:52" (2/3) ... [2021-11-22 15:33:55,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d5a52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:33:55, skipping insertion in model container [2021-11-22 15:33:55,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:33:55" (3/3) ... [2021-11-22 15:33:55,102 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.07.cil-2.c [2021-11-22 15:33:55,108 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:33:55,109 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-22 15:33:55,164 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:33:55,171 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 [2021-11-22 15:33:55,172 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-22 15:33:55,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 948 states, 943 states have (on average 1.528101802757158) internal successors, (1441), 947 states have internal predecessors, (1441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:55,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 15:33:55,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:55,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:55,221 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:33:55,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:55,227 INFO L85 PathProgramCache]: Analyzing trace with hash 985987053, now seen corresponding path program 1 times [2021-11-22 15:33:55,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:55,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044145131] [2021-11-22 15:33:55,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:55,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:55,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:55,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:55,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:55,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044145131] [2021-11-22 15:33:55,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044145131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:55,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:55,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:33:55,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414201883] [2021-11-22 15:33:55,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:55,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:33:55,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:55,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:33:55,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:33:55,531 INFO L87 Difference]: Start difference. First operand has 948 states, 943 states have (on average 1.528101802757158) internal successors, (1441), 947 states have internal predecessors, (1441), 0 states have call successors, (0), 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 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:55,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:55,820 INFO L93 Difference]: Finished difference Result 1893 states and 2866 transitions. [2021-11-22 15:33:55,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:33:55,823 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-22 15:33:55,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:55,854 INFO L225 Difference]: With dead ends: 1893 [2021-11-22 15:33:55,855 INFO L226 Difference]: Without dead ends: 1045 [2021-11-22 15:33:55,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:33:55,877 INFO L933 BasicCegarLoop]: 1491 mSDtfsCounter, 1555 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 2894 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:55,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1555 Valid, 2894 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:33:55,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2021-11-22 15:33:56,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 1041. [2021-11-22 15:33:56,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 1037 states have (on average 1.4908389585342334) internal successors, (1546), 1040 states have internal predecessors, (1546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:56,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1546 transitions. [2021-11-22 15:33:56,016 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1546 transitions. Word has length 44 [2021-11-22 15:33:56,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:56,017 INFO L470 AbstractCegarLoop]: Abstraction has 1041 states and 1546 transitions. [2021-11-22 15:33:56,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:56,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1546 transitions. [2021-11-22 15:33:56,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 15:33:56,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:56,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:56,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:33:56,027 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:33:56,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:56,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1257996245, now seen corresponding path program 1 times [2021-11-22 15:33:56,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:56,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72814896] [2021-11-22 15:33:56,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:56,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:56,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:56,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:56,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72814896] [2021-11-22 15:33:56,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72814896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:56,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:56,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:33:56,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133438796] [2021-11-22 15:33:56,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:56,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:33:56,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:56,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:33:56,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:33:56,172 INFO L87 Difference]: Start difference. First operand 1041 states and 1546 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:56,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:56,287 INFO L93 Difference]: Finished difference Result 1503 states and 2210 transitions. [2021-11-22 15:33:56,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:33:56,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-22 15:33:56,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:56,297 INFO L225 Difference]: With dead ends: 1503 [2021-11-22 15:33:56,297 INFO L226 Difference]: Without dead ends: 1345 [2021-11-22 15:33:56,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:33:56,306 INFO L933 BasicCegarLoop]: 1391 mSDtfsCounter, 420 mSDsluCounter, 4317 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 5708 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:56,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 5708 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:33:56,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1345 states. [2021-11-22 15:33:56,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1345 to 1053. [2021-11-22 15:33:56,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1053 states, 1049 states have (on average 1.4852240228789324) internal successors, (1558), 1052 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1053 states to 1053 states and 1558 transitions. [2021-11-22 15:33:56,379 INFO L78 Accepts]: Start accepts. Automaton has 1053 states and 1558 transitions. Word has length 44 [2021-11-22 15:33:56,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:56,380 INFO L470 AbstractCegarLoop]: Abstraction has 1053 states and 1558 transitions. [2021-11-22 15:33:56,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:56,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1053 states and 1558 transitions. [2021-11-22 15:33:56,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 15:33:56,387 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:56,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:56,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:33:56,392 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:33:56,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:56,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1767469335, now seen corresponding path program 1 times [2021-11-22 15:33:56,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:56,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973341436] [2021-11-22 15:33:56,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:56,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:56,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:56,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:56,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973341436] [2021-11-22 15:33:56,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973341436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:56,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:56,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:33:56,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790241101] [2021-11-22 15:33:56,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:56,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:33:56,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:56,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:33:56,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:33:56,474 INFO L87 Difference]: Start difference. First operand 1053 states and 1558 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:56,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:56,680 INFO L93 Difference]: Finished difference Result 1701 states and 2479 transitions. [2021-11-22 15:33:56,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:33:56,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-22 15:33:56,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:56,691 INFO L225 Difference]: With dead ends: 1701 [2021-11-22 15:33:56,691 INFO L226 Difference]: Without dead ends: 1490 [2021-11-22 15:33:56,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:33:56,694 INFO L933 BasicCegarLoop]: 1380 mSDtfsCounter, 4260 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4260 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:56,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4260 Valid, 1746 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:33:56,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2021-11-22 15:33:56,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1458. [2021-11-22 15:33:56,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 1454 states have (on average 1.4594222833562587) internal successors, (2122), 1457 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:56,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 2122 transitions. [2021-11-22 15:33:56,785 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 2122 transitions. Word has length 44 [2021-11-22 15:33:56,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:56,785 INFO L470 AbstractCegarLoop]: Abstraction has 1458 states and 2122 transitions. [2021-11-22 15:33:56,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:56,786 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 2122 transitions. [2021-11-22 15:33:56,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 15:33:56,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:56,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:56,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:33:56,788 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:33:56,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:56,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1128684856, now seen corresponding path program 1 times [2021-11-22 15:33:56,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:56,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827976403] [2021-11-22 15:33:56,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:56,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:56,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:56,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:56,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827976403] [2021-11-22 15:33:56,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827976403] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:56,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:56,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:33:56,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251656715] [2021-11-22 15:33:56,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:56,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:33:56,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:56,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:33:56,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:33:56,884 INFO L87 Difference]: Start difference. First operand 1458 states and 2122 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:57,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:57,047 INFO L93 Difference]: Finished difference Result 2488 states and 3580 transitions. [2021-11-22 15:33:57,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:33:57,048 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-22 15:33:57,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:57,060 INFO L225 Difference]: With dead ends: 2488 [2021-11-22 15:33:57,061 INFO L226 Difference]: Without dead ends: 1894 [2021-11-22 15:33:57,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:33:57,064 INFO L933 BasicCegarLoop]: 1378 mSDtfsCounter, 354 mSDsluCounter, 4263 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 5641 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:57,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 5641 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:33:57,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1894 states. [2021-11-22 15:33:57,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1894 to 1470. [2021-11-22 15:33:57,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 1466 states have (on average 1.450886766712142) internal successors, (2127), 1469 states have internal predecessors, (2127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:57,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 2127 transitions. [2021-11-22 15:33:57,152 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 2127 transitions. Word has length 44 [2021-11-22 15:33:57,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:57,152 INFO L470 AbstractCegarLoop]: Abstraction has 1470 states and 2127 transitions. [2021-11-22 15:33:57,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:57,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 2127 transitions. [2021-11-22 15:33:57,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 15:33:57,154 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:57,154 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:57,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 15:33:57,155 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:33:57,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:57,155 INFO L85 PathProgramCache]: Analyzing trace with hash -909830138, now seen corresponding path program 1 times [2021-11-22 15:33:57,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:57,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232616709] [2021-11-22 15:33:57,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:57,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:57,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:57,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:57,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232616709] [2021-11-22 15:33:57,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232616709] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:57,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:57,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:33:57,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013877521] [2021-11-22 15:33:57,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:57,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:33:57,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:57,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:33:57,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:33:57,212 INFO L87 Difference]: Start difference. First operand 1470 states and 2127 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:57,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:57,333 INFO L93 Difference]: Finished difference Result 2307 states and 3291 transitions. [2021-11-22 15:33:57,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:33:57,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-22 15:33:57,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:57,346 INFO L225 Difference]: With dead ends: 2307 [2021-11-22 15:33:57,346 INFO L226 Difference]: Without dead ends: 1692 [2021-11-22 15:33:57,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:33:57,350 INFO L933 BasicCegarLoop]: 1378 mSDtfsCounter, 99 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:57,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 2721 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:33:57,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1692 states. [2021-11-22 15:33:57,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1692 to 1410. [2021-11-22 15:33:57,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1410 states, 1406 states have (on average 1.445945945945946) internal successors, (2033), 1409 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:57,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1410 states to 1410 states and 2033 transitions. [2021-11-22 15:33:57,457 INFO L78 Accepts]: Start accepts. Automaton has 1410 states and 2033 transitions. Word has length 44 [2021-11-22 15:33:57,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:57,459 INFO L470 AbstractCegarLoop]: Abstraction has 1410 states and 2033 transitions. [2021-11-22 15:33:57,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:57,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1410 states and 2033 transitions. [2021-11-22 15:33:57,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 15:33:57,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:57,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:57,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 15:33:57,466 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:33:57,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:57,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1727478588, now seen corresponding path program 1 times [2021-11-22 15:33:57,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:57,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339554508] [2021-11-22 15:33:57,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:57,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:57,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:57,556 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:57,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339554508] [2021-11-22 15:33:57,557 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339554508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:57,557 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:57,557 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:33:57,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742723920] [2021-11-22 15:33:57,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:57,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:33:57,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:57,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:33:57,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:33:57,560 INFO L87 Difference]: Start difference. First operand 1410 states and 2033 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:57,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:57,733 INFO L93 Difference]: Finished difference Result 2240 states and 3160 transitions. [2021-11-22 15:33:57,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:33:57,734 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-22 15:33:57,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:57,744 INFO L225 Difference]: With dead ends: 2240 [2021-11-22 15:33:57,744 INFO L226 Difference]: Without dead ends: 1694 [2021-11-22 15:33:57,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:33:57,747 INFO L933 BasicCegarLoop]: 1375 mSDtfsCounter, 2800 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2800 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:57,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2800 Valid, 1494 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:33:57,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2021-11-22 15:33:57,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1468. [2021-11-22 15:33:57,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1464 states have (on average 1.4296448087431695) internal successors, (2093), 1467 states have internal predecessors, (2093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:57,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 2093 transitions. [2021-11-22 15:33:57,870 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 2093 transitions. Word has length 44 [2021-11-22 15:33:57,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:57,871 INFO L470 AbstractCegarLoop]: Abstraction has 1468 states and 2093 transitions. [2021-11-22 15:33:57,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:57,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 2093 transitions. [2021-11-22 15:33:57,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-22 15:33:57,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:57,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:57,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 15:33:57,873 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:33:57,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:57,874 INFO L85 PathProgramCache]: Analyzing trace with hash 878544966, now seen corresponding path program 1 times [2021-11-22 15:33:57,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:57,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941949395] [2021-11-22 15:33:57,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:57,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:57,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:57,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941949395] [2021-11-22 15:33:57,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941949395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:57,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:57,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:33:57,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481539365] [2021-11-22 15:33:57,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:57,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:33:57,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:57,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:33:57,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:33:57,914 INFO L87 Difference]: Start difference. First operand 1468 states and 2093 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:58,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:58,056 INFO L93 Difference]: Finished difference Result 2619 states and 3604 transitions. [2021-11-22 15:33:58,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:33:58,057 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-22 15:33:58,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:58,068 INFO L225 Difference]: With dead ends: 2619 [2021-11-22 15:33:58,069 INFO L226 Difference]: Without dead ends: 2016 [2021-11-22 15:33:58,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:33:58,071 INFO L933 BasicCegarLoop]: 1379 mSDtfsCounter, 1331 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:58,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1331 Valid, 1488 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:33:58,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2021-11-22 15:33:58,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 2012. [2021-11-22 15:33:58,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2012 states, 2008 states have (on average 1.3774900398406376) internal successors, (2766), 2011 states have internal predecessors, (2766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:58,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2012 states to 2012 states and 2766 transitions. [2021-11-22 15:33:58,198 INFO L78 Accepts]: Start accepts. Automaton has 2012 states and 2766 transitions. Word has length 44 [2021-11-22 15:33:58,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:58,214 INFO L470 AbstractCegarLoop]: Abstraction has 2012 states and 2766 transitions. [2021-11-22 15:33:58,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:58,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2012 states and 2766 transitions. [2021-11-22 15:33:58,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-22 15:33:58,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:58,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:58,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 15:33:58,216 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:33:58,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:58,217 INFO L85 PathProgramCache]: Analyzing trace with hash 932951835, now seen corresponding path program 1 times [2021-11-22 15:33:58,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:58,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954962449] [2021-11-22 15:33:58,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:58,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:58,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:58,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:58,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:58,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954962449] [2021-11-22 15:33:58,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954962449] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:58,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:58,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:33:58,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124383444] [2021-11-22 15:33:58,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:58,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:33:58,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:58,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:33:58,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:33:58,286 INFO L87 Difference]: Start difference. First operand 2012 states and 2766 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) [2021-11-22 15:33:58,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:58,474 INFO L93 Difference]: Finished difference Result 4049 states and 5422 transitions. [2021-11-22 15:33:58,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:33:58,475 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 [2021-11-22 15:33:58,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:58,492 INFO L225 Difference]: With dead ends: 4049 [2021-11-22 15:33:58,492 INFO L226 Difference]: Without dead ends: 2923 [2021-11-22 15:33:58,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:33:58,497 INFO L933 BasicCegarLoop]: 1382 mSDtfsCounter, 78 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2715 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:58,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 2715 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:33:58,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2021-11-22 15:33:58,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2883. [2021-11-22 15:33:58,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2883 states, 2879 states have (on average 1.3476901701979853) internal successors, (3880), 2882 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:58,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2883 states to 2883 states and 3880 transitions. [2021-11-22 15:33:58,697 INFO L78 Accepts]: Start accepts. Automaton has 2883 states and 3880 transitions. Word has length 45 [2021-11-22 15:33:58,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:58,697 INFO L470 AbstractCegarLoop]: Abstraction has 2883 states and 3880 transitions. [2021-11-22 15:33:58,697 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) [2021-11-22 15:33:58,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2883 states and 3880 transitions. [2021-11-22 15:33:58,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-22 15:33:58,698 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:58,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:58,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 15:33:58,699 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:33:58,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:58,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1653310564, now seen corresponding path program 1 times [2021-11-22 15:33:58,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:58,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822551541] [2021-11-22 15:33:58,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:58,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:58,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:58,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:58,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822551541] [2021-11-22 15:33:58,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822551541] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:58,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:58,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:33:58,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313555611] [2021-11-22 15:33:58,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:58,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:33:58,745 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:58,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:33:58,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:33:58,746 INFO L87 Difference]: Start difference. First operand 2883 states and 3880 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2021-11-22 15:33:59,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:59,007 INFO L93 Difference]: Finished difference Result 5686 states and 7461 transitions. [2021-11-22 15:33:59,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:33:59,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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 [2021-11-22 15:33:59,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:59,028 INFO L225 Difference]: With dead ends: 5686 [2021-11-22 15:33:59,028 INFO L226 Difference]: Without dead ends: 3659 [2021-11-22 15:33:59,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:33:59,034 INFO L933 BasicCegarLoop]: 1391 mSDtfsCounter, 1326 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:59,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1326 Valid, 1480 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:33:59,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3659 states. [2021-11-22 15:33:59,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3659 to 3627. [2021-11-22 15:33:59,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3627 states, 3623 states have (on average 1.3237648357714602) internal successors, (4796), 3626 states have internal predecessors, (4796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:33:59,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 4796 transitions. [2021-11-22 15:33:59,328 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 4796 transitions. Word has length 51 [2021-11-22 15:33:59,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:33:59,328 INFO L470 AbstractCegarLoop]: Abstraction has 3627 states and 4796 transitions. [2021-11-22 15:33:59,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 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) [2021-11-22 15:33:59,329 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 4796 transitions. [2021-11-22 15:33:59,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-22 15:33:59,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:33:59,330 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:33:59,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 15:33:59,331 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:33:59,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:33:59,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1932906728, now seen corresponding path program 1 times [2021-11-22 15:33:59,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:33:59,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998263350] [2021-11-22 15:33:59,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:33:59,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:33:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:33:59,375 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:33:59,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:33:59,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998263350] [2021-11-22 15:33:59,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998263350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:33:59,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:33:59,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:33:59,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463749322] [2021-11-22 15:33:59,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:33:59,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:33:59,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:33:59,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:33:59,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:33:59,378 INFO L87 Difference]: Start difference. First operand 3627 states and 4796 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) [2021-11-22 15:33:59,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:33:59,674 INFO L93 Difference]: Finished difference Result 4423 states and 5800 transitions. [2021-11-22 15:33:59,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:33:59,675 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 [2021-11-22 15:33:59,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:33:59,700 INFO L225 Difference]: With dead ends: 4423 [2021-11-22 15:33:59,700 INFO L226 Difference]: Without dead ends: 4421 [2021-11-22 15:33:59,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:33:59,703 INFO L933 BasicCegarLoop]: 1390 mSDtfsCounter, 2788 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2788 SdHoareTripleChecker+Valid, 1478 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:33:59,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2788 Valid, 1478 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:33:59,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2021-11-22 15:33:59,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 3625. [2021-11-22 15:33:59,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3625 states, 3622 states have (on average 1.3216454997239095) internal successors, (4787), 3624 states have internal predecessors, (4787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:00,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3625 states to 3625 states and 4787 transitions. [2021-11-22 15:34:00,011 INFO L78 Accepts]: Start accepts. Automaton has 3625 states and 4787 transitions. Word has length 52 [2021-11-22 15:34:00,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:00,013 INFO L470 AbstractCegarLoop]: Abstraction has 3625 states and 4787 transitions. [2021-11-22 15:34:00,013 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) [2021-11-22 15:34:00,013 INFO L276 IsEmpty]: Start isEmpty. Operand 3625 states and 4787 transitions. [2021-11-22 15:34:00,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-22 15:34:00,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:00,015 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:00,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 15:34:00,016 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:00,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:00,016 INFO L85 PathProgramCache]: Analyzing trace with hash -209446128, now seen corresponding path program 1 times [2021-11-22 15:34:00,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:00,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459872348] [2021-11-22 15:34:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:00,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:00,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:00,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:00,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459872348] [2021-11-22 15:34:00,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459872348] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 15:34:00,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859693219] [2021-11-22 15:34:00,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:00,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:34:00,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:34:00,153 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:34:00,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:34:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:00,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 15:34:00,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:34:00,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:00,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:34:01,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:01,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859693219] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:34:01,095 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 15:34:01,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2021-11-22 15:34:01,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126603861] [2021-11-22 15:34:01,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 15:34:01,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:34:01,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:01,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:34:01,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:34:01,098 INFO L87 Difference]: Start difference. First operand 3625 states and 4787 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:01,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:01,932 INFO L93 Difference]: Finished difference Result 8511 states and 11002 transitions. [2021-11-22 15:34:01,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:34:01,932 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 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 [2021-11-22 15:34:01,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:01,975 INFO L225 Difference]: With dead ends: 8511 [2021-11-22 15:34:01,975 INFO L226 Difference]: Without dead ends: 8509 [2021-11-22 15:34:01,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:34:01,979 INFO L933 BasicCegarLoop]: 1517 mSDtfsCounter, 1614 mSDsluCounter, 4699 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 6216 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:01,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1614 Valid, 6216 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:01,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8509 states. [2021-11-22 15:34:02,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8509 to 6301. [2021-11-22 15:34:02,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6301 states, 6298 states have (on average 1.3046999047316608) internal successors, (8217), 6300 states have internal predecessors, (8217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:02,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6301 states to 6301 states and 8217 transitions. [2021-11-22 15:34:02,653 INFO L78 Accepts]: Start accepts. Automaton has 6301 states and 8217 transitions. Word has length 53 [2021-11-22 15:34:02,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:02,654 INFO L470 AbstractCegarLoop]: Abstraction has 6301 states and 8217 transitions. [2021-11-22 15:34:02,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:02,654 INFO L276 IsEmpty]: Start isEmpty. Operand 6301 states and 8217 transitions. [2021-11-22 15:34:02,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-22 15:34:02,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:02,656 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:02,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:34:02,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8cfdfb-109a-4dc9-8033-5e006299b26b/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-22 15:34:02,883 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:02,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:02,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1101570150, now seen corresponding path program 2 times [2021-11-22 15:34:02,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:02,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162915652] [2021-11-22 15:34:02,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:02,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:02,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:02,914 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:02,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:02,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162915652] [2021-11-22 15:34:02,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162915652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:02,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:02,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:34:02,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626581215] [2021-11-22 15:34:02,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:02,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:34:02,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:02,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:34:02,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:02,918 INFO L87 Difference]: Start difference. First operand 6301 states and 8217 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:03,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:03,310 INFO L93 Difference]: Finished difference Result 9095 states and 11822 transitions. [2021-11-22 15:34:03,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:34:03,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2021-11-22 15:34:03,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:03,374 INFO L225 Difference]: With dead ends: 9095 [2021-11-22 15:34:03,375 INFO L226 Difference]: Without dead ends: 4509 [2021-11-22 15:34:03,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:03,381 INFO L933 BasicCegarLoop]: 1437 mSDtfsCounter, 1336 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1336 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:03,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1336 Valid, 1542 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:03,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4509 states. [2021-11-22 15:34:03,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4509 to 4453. [2021-11-22 15:34:03,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4453 states, 4450 states have (on average 1.2991011235955057) internal successors, (5781), 4452 states have internal predecessors, (5781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:03,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4453 states to 4453 states and 5781 transitions. [2021-11-22 15:34:03,710 INFO L78 Accepts]: Start accepts. Automaton has 4453 states and 5781 transitions. Word has length 56 [2021-11-22 15:34:03,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:03,710 INFO L470 AbstractCegarLoop]: Abstraction has 4453 states and 5781 transitions. [2021-11-22 15:34:03,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:03,711 INFO L276 IsEmpty]: Start isEmpty. Operand 4453 states and 5781 transitions. [2021-11-22 15:34:03,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-22 15:34:03,713 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:03,713 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:03,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 15:34:03,714 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:03,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:03,715 INFO L85 PathProgramCache]: Analyzing trace with hash -251543008, now seen corresponding path program 1 times [2021-11-22 15:34:03,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:03,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305962300] [2021-11-22 15:34:03,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:03,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:03,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:03,760 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:03,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:03,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305962300] [2021-11-22 15:34:03,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305962300] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:03,761 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:03,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:34:03,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40961925] [2021-11-22 15:34:03,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:03,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:34:03,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:03,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:34:03,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:34:03,763 INFO L87 Difference]: Start difference. First operand 4453 states and 5781 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:04,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:04,245 INFO L93 Difference]: Finished difference Result 8931 states and 11329 transitions. [2021-11-22 15:34:04,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:34:04,246 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-11-22 15:34:04,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:04,256 INFO L225 Difference]: With dead ends: 8931 [2021-11-22 15:34:04,256 INFO L226 Difference]: Without dead ends: 3897 [2021-11-22 15:34:04,263 INFO L932 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 [2021-11-22 15:34:04,264 INFO L933 BasicCegarLoop]: 1436 mSDtfsCounter, 293 mSDsluCounter, 2682 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 4118 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:04,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [293 Valid, 4118 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:04,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3897 states. [2021-11-22 15:34:04,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3897 to 3697. [2021-11-22 15:34:04,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3697 states, 3694 states have (on average 1.276935571196535) internal successors, (4717), 3696 states have internal predecessors, (4717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:04,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3697 states to 3697 states and 4717 transitions. [2021-11-22 15:34:04,507 INFO L78 Accepts]: Start accepts. Automaton has 3697 states and 4717 transitions. Word has length 60 [2021-11-22 15:34:04,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:04,507 INFO L470 AbstractCegarLoop]: Abstraction has 3697 states and 4717 transitions. [2021-11-22 15:34:04,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:04,508 INFO L276 IsEmpty]: Start isEmpty. Operand 3697 states and 4717 transitions. [2021-11-22 15:34:04,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-22 15:34:04,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:04,510 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:04,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 15:34:04,510 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:04,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:04,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1264848002, now seen corresponding path program 1 times [2021-11-22 15:34:04,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:04,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548852780] [2021-11-22 15:34:04,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:04,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:04,547 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 15:34:04,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:04,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548852780] [2021-11-22 15:34:04,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548852780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:04,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:04,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:34:04,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073157510] [2021-11-22 15:34:04,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:04,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:34:04,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:04,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:34:04,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:34:04,551 INFO L87 Difference]: Start difference. First operand 3697 states and 4717 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:04,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:04,942 INFO L93 Difference]: Finished difference Result 6368 states and 7966 transitions. [2021-11-22 15:34:04,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:34:04,943 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-22 15:34:04,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:04,954 INFO L225 Difference]: With dead ends: 6368 [2021-11-22 15:34:04,954 INFO L226 Difference]: Without dead ends: 3445 [2021-11-22 15:34:04,960 INFO L932 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 [2021-11-22 15:34:04,961 INFO L933 BasicCegarLoop]: 1434 mSDtfsCounter, 306 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 4176 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:04,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [306 Valid, 4176 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:04,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3445 states. [2021-11-22 15:34:05,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3445 to 3435. [2021-11-22 15:34:05,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3435 states, 3432 states have (on average 1.2642773892773893) internal successors, (4339), 3434 states have internal predecessors, (4339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:05,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3435 states to 3435 states and 4339 transitions. [2021-11-22 15:34:05,242 INFO L78 Accepts]: Start accepts. Automaton has 3435 states and 4339 transitions. Word has length 69 [2021-11-22 15:34:05,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:05,243 INFO L470 AbstractCegarLoop]: Abstraction has 3435 states and 4339 transitions. [2021-11-22 15:34:05,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:05,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3435 states and 4339 transitions. [2021-11-22 15:34:05,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:05,246 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:05,246 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:05,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-22 15:34:05,247 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:05,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:05,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1230978859, now seen corresponding path program 1 times [2021-11-22 15:34:05,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:05,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877167796] [2021-11-22 15:34:05,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:05,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:05,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:05,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:05,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877167796] [2021-11-22 15:34:05,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877167796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:05,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:05,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:34:05,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733965577] [2021-11-22 15:34:05,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:05,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:34:05,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:05,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:34:05,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:05,286 INFO L87 Difference]: Start difference. First operand 3435 states and 4339 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:05,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:05,570 INFO L93 Difference]: Finished difference Result 4262 states and 5573 transitions. [2021-11-22 15:34:05,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:34:05,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-22 15:34:05,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:05,580 INFO L225 Difference]: With dead ends: 4262 [2021-11-22 15:34:05,581 INFO L226 Difference]: Without dead ends: 3435 [2021-11-22 15:34:05,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:05,587 INFO L933 BasicCegarLoop]: 1372 mSDtfsCounter, 1242 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1492 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:05,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1242 Valid, 1492 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:05,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3435 states. [2021-11-22 15:34:05,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3435 to 3435. [2021-11-22 15:34:05,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3435 states, 3432 states have (on average 1.263986013986014) internal successors, (4338), 3434 states have internal predecessors, (4338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:05,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3435 states to 3435 states and 4338 transitions. [2021-11-22 15:34:05,857 INFO L78 Accepts]: Start accepts. Automaton has 3435 states and 4338 transitions. Word has length 110 [2021-11-22 15:34:05,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:05,858 INFO L470 AbstractCegarLoop]: Abstraction has 3435 states and 4338 transitions. [2021-11-22 15:34:05,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:05,858 INFO L276 IsEmpty]: Start isEmpty. Operand 3435 states and 4338 transitions. [2021-11-22 15:34:05,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:05,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:05,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:05,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-22 15:34:05,862 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:05,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:05,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1157585171, now seen corresponding path program 1 times [2021-11-22 15:34:05,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:05,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845484266] [2021-11-22 15:34:05,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:05,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:05,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:05,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:05,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845484266] [2021-11-22 15:34:05,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845484266] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:05,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:05,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:34:05,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459642380] [2021-11-22 15:34:05,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:05,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:34:05,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:05,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:34:05,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:05,907 INFO L87 Difference]: Start difference. First operand 3435 states and 4338 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:06,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:06,168 INFO L93 Difference]: Finished difference Result 4938 states and 6573 transitions. [2021-11-22 15:34:06,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:34:06,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-22 15:34:06,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:06,178 INFO L225 Difference]: With dead ends: 4938 [2021-11-22 15:34:06,179 INFO L226 Difference]: Without dead ends: 4113 [2021-11-22 15:34:06,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:06,182 INFO L933 BasicCegarLoop]: 1398 mSDtfsCounter, 1271 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1271 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:06,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1271 Valid, 2478 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:06,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4113 states. [2021-11-22 15:34:06,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4113 to 4109. [2021-11-22 15:34:06,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4106 states have (on average 1.2995616171456406) internal successors, (5336), 4108 states have internal predecessors, (5336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:06,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 5336 transitions. [2021-11-22 15:34:06,396 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 5336 transitions. Word has length 110 [2021-11-22 15:34:06,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:06,396 INFO L470 AbstractCegarLoop]: Abstraction has 4109 states and 5336 transitions. [2021-11-22 15:34:06,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:06,397 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 5336 transitions. [2021-11-22 15:34:06,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:06,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:06,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:06,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 15:34:06,399 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:06,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:06,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1512716499, now seen corresponding path program 1 times [2021-11-22 15:34:06,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:06,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206956130] [2021-11-22 15:34:06,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:06,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:06,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:06,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:06,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206956130] [2021-11-22 15:34:06,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206956130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:06,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:06,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:34:06,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858786540] [2021-11-22 15:34:06,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:06,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:34:06,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:06,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:34:06,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:06,430 INFO L87 Difference]: Start difference. First operand 4109 states and 5336 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:06,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:06,662 INFO L93 Difference]: Finished difference Result 5607 states and 7564 transitions. [2021-11-22 15:34:06,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:34:06,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-22 15:34:06,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:06,672 INFO L225 Difference]: With dead ends: 5607 [2021-11-22 15:34:06,672 INFO L226 Difference]: Without dead ends: 4109 [2021-11-22 15:34:06,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:06,676 INFO L933 BasicCegarLoop]: 1361 mSDtfsCounter, 1351 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:06,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1351 Valid, 1361 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:06,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2021-11-22 15:34:06,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 4109. [2021-11-22 15:34:06,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4106 states have (on average 1.2976132489040428) internal successors, (5328), 4108 states have internal predecessors, (5328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:06,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 5328 transitions. [2021-11-22 15:34:06,963 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 5328 transitions. Word has length 110 [2021-11-22 15:34:06,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:06,963 INFO L470 AbstractCegarLoop]: Abstraction has 4109 states and 5328 transitions. [2021-11-22 15:34:06,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:06,964 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 5328 transitions. [2021-11-22 15:34:06,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:06,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:06,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:06,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 15:34:06,967 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:06,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:06,967 INFO L85 PathProgramCache]: Analyzing trace with hash -138699027, now seen corresponding path program 1 times [2021-11-22 15:34:06,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:06,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092232632] [2021-11-22 15:34:06,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:06,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:06,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:06,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:06,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092232632] [2021-11-22 15:34:06,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092232632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:06,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:06,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:34:06,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070371089] [2021-11-22 15:34:06,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:06,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:34:06,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:06,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:34:06,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:06,998 INFO L87 Difference]: Start difference. First operand 4109 states and 5328 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:07,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:07,237 INFO L93 Difference]: Finished difference Result 5606 states and 7547 transitions. [2021-11-22 15:34:07,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:34:07,238 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-22 15:34:07,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:07,247 INFO L225 Difference]: With dead ends: 5606 [2021-11-22 15:34:07,247 INFO L226 Difference]: Without dead ends: 4109 [2021-11-22 15:34:07,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:07,252 INFO L933 BasicCegarLoop]: 1356 mSDtfsCounter, 1345 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1345 SdHoareTripleChecker+Valid, 1356 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:07,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1345 Valid, 1356 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:07,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2021-11-22 15:34:07,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 4109. [2021-11-22 15:34:07,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4106 states have (on average 1.2956648806624451) internal successors, (5320), 4108 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 5320 transitions. [2021-11-22 15:34:07,507 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 5320 transitions. Word has length 110 [2021-11-22 15:34:07,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:07,507 INFO L470 AbstractCegarLoop]: Abstraction has 4109 states and 5320 transitions. [2021-11-22 15:34:07,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:07,507 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 5320 transitions. [2021-11-22 15:34:07,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:07,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:07,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:07,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 15:34:07,511 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:07,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:07,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1757673941, now seen corresponding path program 1 times [2021-11-22 15:34:07,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:07,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815955144] [2021-11-22 15:34:07,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:07,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:07,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:07,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:07,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815955144] [2021-11-22 15:34:07,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815955144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:07,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:07,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:34:07,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87679650] [2021-11-22 15:34:07,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:07,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:34:07,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:07,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:34:07,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:34:07,549 INFO L87 Difference]: Start difference. First operand 4109 states and 5320 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:07,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:07,941 INFO L93 Difference]: Finished difference Result 7028 states and 9630 transitions. [2021-11-22 15:34:07,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:34:07,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-22 15:34:07,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:07,954 INFO L225 Difference]: With dead ends: 7028 [2021-11-22 15:34:07,955 INFO L226 Difference]: Without dead ends: 5532 [2021-11-22 15:34:07,958 INFO L932 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 [2021-11-22 15:34:07,959 INFO L933 BasicCegarLoop]: 2446 mSDtfsCounter, 2694 mSDsluCounter, 1097 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2694 SdHoareTripleChecker+Valid, 3543 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:07,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2694 Valid, 3543 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:07,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5532 states. [2021-11-22 15:34:08,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5532 to 4109. [2021-11-22 15:34:08,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4106 states have (on average 1.294934242571846) internal successors, (5317), 4108 states have internal predecessors, (5317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:08,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 5317 transitions. [2021-11-22 15:34:08,273 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 5317 transitions. Word has length 110 [2021-11-22 15:34:08,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:08,274 INFO L470 AbstractCegarLoop]: Abstraction has 4109 states and 5317 transitions. [2021-11-22 15:34:08,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:08,274 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 5317 transitions. [2021-11-22 15:34:08,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:08,277 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:08,277 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:08,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 15:34:08,278 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:08,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:08,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1653784365, now seen corresponding path program 1 times [2021-11-22 15:34:08,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:08,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002972646] [2021-11-22 15:34:08,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:08,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:08,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:08,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:08,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:08,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002972646] [2021-11-22 15:34:08,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002972646] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:08,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:08,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:34:08,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331658449] [2021-11-22 15:34:08,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:08,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:34:08,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:08,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:34:08,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:34:08,314 INFO L87 Difference]: Start difference. First operand 4109 states and 5317 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:08,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:08,712 INFO L93 Difference]: Finished difference Result 7024 states and 9615 transitions. [2021-11-22 15:34:08,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:34:08,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-22 15:34:08,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:08,726 INFO L225 Difference]: With dead ends: 7024 [2021-11-22 15:34:08,726 INFO L226 Difference]: Without dead ends: 5530 [2021-11-22 15:34:08,730 INFO L932 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 [2021-11-22 15:34:08,731 INFO L933 BasicCegarLoop]: 2439 mSDtfsCounter, 2688 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2688 SdHoareTripleChecker+Valid, 3531 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:08,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2688 Valid, 3531 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:08,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5530 states. [2021-11-22 15:34:09,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5530 to 4109. [2021-11-22 15:34:09,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4106 states have (on average 1.294203604481247) internal successors, (5314), 4108 states have internal predecessors, (5314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:09,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 5314 transitions. [2021-11-22 15:34:09,076 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 5314 transitions. Word has length 110 [2021-11-22 15:34:09,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:09,076 INFO L470 AbstractCegarLoop]: Abstraction has 4109 states and 5314 transitions. [2021-11-22 15:34:09,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:09,077 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 5314 transitions. [2021-11-22 15:34:09,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:09,079 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:09,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:09,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 15:34:09,080 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:09,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:09,081 INFO L85 PathProgramCache]: Analyzing trace with hash -286797649, now seen corresponding path program 1 times [2021-11-22 15:34:09,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:09,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819078790] [2021-11-22 15:34:09,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:09,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:09,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:09,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:09,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819078790] [2021-11-22 15:34:09,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819078790] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:09,119 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:09,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:34:09,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862295208] [2021-11-22 15:34:09,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:09,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:34:09,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:09,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:34:09,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:34:09,121 INFO L87 Difference]: Start difference. First operand 4109 states and 5314 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:09,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:09,578 INFO L93 Difference]: Finished difference Result 7022 states and 9604 transitions. [2021-11-22 15:34:09,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:34:09,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-22 15:34:09,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:09,589 INFO L225 Difference]: With dead ends: 7022 [2021-11-22 15:34:09,590 INFO L226 Difference]: Without dead ends: 5529 [2021-11-22 15:34:09,594 INFO L932 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 [2021-11-22 15:34:09,595 INFO L933 BasicCegarLoop]: 2434 mSDtfsCounter, 2683 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2683 SdHoareTripleChecker+Valid, 3523 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:09,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2683 Valid, 3523 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:09,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5529 states. [2021-11-22 15:34:09,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5529 to 4109. [2021-11-22 15:34:09,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4106 states have (on average 1.293472966390648) internal successors, (5311), 4108 states have internal predecessors, (5311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:09,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 5311 transitions. [2021-11-22 15:34:09,925 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 5311 transitions. Word has length 110 [2021-11-22 15:34:09,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:09,926 INFO L470 AbstractCegarLoop]: Abstraction has 4109 states and 5311 transitions. [2021-11-22 15:34:09,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:09,926 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 5311 transitions. [2021-11-22 15:34:09,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:09,928 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:09,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:09,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 15:34:09,929 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:09,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:09,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1590265581, now seen corresponding path program 1 times [2021-11-22 15:34:09,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:09,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547833763] [2021-11-22 15:34:09,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:09,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:09,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:09,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:09,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547833763] [2021-11-22 15:34:09,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547833763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:09,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:09,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:34:09,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377309121] [2021-11-22 15:34:09,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:09,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:34:09,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:09,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:34:09,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:09,978 INFO L87 Difference]: Start difference. First operand 4109 states and 5311 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:10,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:10,246 INFO L93 Difference]: Finished difference Result 5601 states and 7507 transitions. [2021-11-22 15:34:10,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:34:10,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-22 15:34:10,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:10,256 INFO L225 Difference]: With dead ends: 5601 [2021-11-22 15:34:10,256 INFO L226 Difference]: Without dead ends: 4109 [2021-11-22 15:34:10,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:10,260 INFO L933 BasicCegarLoop]: 1345 mSDtfsCounter, 1329 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:10,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1329 Valid, 1345 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:10,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2021-11-22 15:34:10,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 4109. [2021-11-22 15:34:10,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4106 states have (on average 1.2915245981490502) internal successors, (5303), 4108 states have internal predecessors, (5303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:10,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 5303 transitions. [2021-11-22 15:34:10,585 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 5303 transitions. Word has length 110 [2021-11-22 15:34:10,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:10,585 INFO L470 AbstractCegarLoop]: Abstraction has 4109 states and 5303 transitions. [2021-11-22 15:34:10,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:10,586 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 5303 transitions. [2021-11-22 15:34:10,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:10,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:10,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:10,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 15:34:10,589 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:10,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:10,589 INFO L85 PathProgramCache]: Analyzing trace with hash 685518509, now seen corresponding path program 1 times [2021-11-22 15:34:10,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:10,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074775919] [2021-11-22 15:34:10,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:10,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:10,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:10,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:10,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:10,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074775919] [2021-11-22 15:34:10,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074775919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:10,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:10,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:34:10,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659463917] [2021-11-22 15:34:10,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:10,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:34:10,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:10,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:34:10,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:34:10,623 INFO L87 Difference]: Start difference. First operand 4109 states and 5303 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:11,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:11,117 INFO L93 Difference]: Finished difference Result 6904 states and 9406 transitions. [2021-11-22 15:34:11,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:34:11,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-22 15:34:11,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:11,130 INFO L225 Difference]: With dead ends: 6904 [2021-11-22 15:34:11,130 INFO L226 Difference]: Without dead ends: 5413 [2021-11-22 15:34:11,135 INFO L932 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 [2021-11-22 15:34:11,138 INFO L933 BasicCegarLoop]: 2298 mSDtfsCounter, 2583 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2583 SdHoareTripleChecker+Valid, 3357 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:11,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2583 Valid, 3357 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:34:11,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5413 states. [2021-11-22 15:34:11,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5413 to 4109. [2021-11-22 15:34:11,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4106 states have (on average 1.290793960058451) internal successors, (5300), 4108 states have internal predecessors, (5300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:11,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 5300 transitions. [2021-11-22 15:34:11,550 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 5300 transitions. Word has length 110 [2021-11-22 15:34:11,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:11,551 INFO L470 AbstractCegarLoop]: Abstraction has 4109 states and 5300 transitions. [2021-11-22 15:34:11,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:11,551 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 5300 transitions. [2021-11-22 15:34:11,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:11,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:11,554 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:11,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 15:34:11,555 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:11,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:11,555 INFO L85 PathProgramCache]: Analyzing trace with hash -309175189, now seen corresponding path program 1 times [2021-11-22 15:34:11,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:11,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924022675] [2021-11-22 15:34:11,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:11,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:11,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:11,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:11,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924022675] [2021-11-22 15:34:11,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924022675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:11,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:11,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:34:11,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613210125] [2021-11-22 15:34:11,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:11,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:34:11,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:11,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:34:11,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:34:11,600 INFO L87 Difference]: Start difference. First operand 4109 states and 5300 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:12,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:12,084 INFO L93 Difference]: Finished difference Result 6900 states and 9393 transitions. [2021-11-22 15:34:12,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:34:12,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-22 15:34:12,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:12,091 INFO L225 Difference]: With dead ends: 6900 [2021-11-22 15:34:12,091 INFO L226 Difference]: Without dead ends: 5410 [2021-11-22 15:34:12,095 INFO L932 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 [2021-11-22 15:34:12,096 INFO L933 BasicCegarLoop]: 2292 mSDtfsCounter, 2577 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2577 SdHoareTripleChecker+Valid, 3348 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:12,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2577 Valid, 3348 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:34:12,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5410 states. [2021-11-22 15:34:12,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5410 to 4109. [2021-11-22 15:34:12,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4106 states have (on average 1.290063321967852) internal successors, (5297), 4108 states have internal predecessors, (5297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:12,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 5297 transitions. [2021-11-22 15:34:12,491 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 5297 transitions. Word has length 110 [2021-11-22 15:34:12,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:12,491 INFO L470 AbstractCegarLoop]: Abstraction has 4109 states and 5297 transitions. [2021-11-22 15:34:12,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:12,492 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 5297 transitions. [2021-11-22 15:34:12,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:12,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:12,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:12,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-22 15:34:12,495 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:12,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:12,496 INFO L85 PathProgramCache]: Analyzing trace with hash -895451411, now seen corresponding path program 1 times [2021-11-22 15:34:12,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:12,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264816225] [2021-11-22 15:34:12,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:12,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:12,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:12,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:12,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264816225] [2021-11-22 15:34:12,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264816225] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:12,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:12,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:34:12,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347525335] [2021-11-22 15:34:12,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:12,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:34:12,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:12,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:34:12,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:12,526 INFO L87 Difference]: Start difference. First operand 4109 states and 5297 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:12,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:12,849 INFO L93 Difference]: Finished difference Result 5598 states and 7476 transitions. [2021-11-22 15:34:12,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:34:12,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-22 15:34:12,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:12,853 INFO L225 Difference]: With dead ends: 5598 [2021-11-22 15:34:12,854 INFO L226 Difference]: Without dead ends: 4109 [2021-11-22 15:34:12,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:12,857 INFO L933 BasicCegarLoop]: 1316 mSDtfsCounter, 1225 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1225 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:12,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1225 Valid, 1394 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:12,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2021-11-22 15:34:13,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 4109. [2021-11-22 15:34:13,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4106 states have (on average 1.2837311251826595) internal successors, (5271), 4108 states have internal predecessors, (5271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:13,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 5271 transitions. [2021-11-22 15:34:13,258 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 5271 transitions. Word has length 110 [2021-11-22 15:34:13,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:13,258 INFO L470 AbstractCegarLoop]: Abstraction has 4109 states and 5271 transitions. [2021-11-22 15:34:13,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:13,258 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 5271 transitions. [2021-11-22 15:34:13,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:13,261 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:13,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:13,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-22 15:34:13,262 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:13,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:13,262 INFO L85 PathProgramCache]: Analyzing trace with hash -716531924, now seen corresponding path program 1 times [2021-11-22 15:34:13,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:13,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978595523] [2021-11-22 15:34:13,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:13,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:13,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:13,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:13,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978595523] [2021-11-22 15:34:13,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978595523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:13,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:13,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:34:13,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966300093] [2021-11-22 15:34:13,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:13,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:34:13,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:13,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:34:13,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:34:13,301 INFO L87 Difference]: Start difference. First operand 4109 states and 5271 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:13,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:13,843 INFO L93 Difference]: Finished difference Result 6898 states and 9308 transitions. [2021-11-22 15:34:13,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:34:13,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-22 15:34:13,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:13,852 INFO L225 Difference]: With dead ends: 6898 [2021-11-22 15:34:13,853 INFO L226 Difference]: Without dead ends: 5410 [2021-11-22 15:34:13,856 INFO L932 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 [2021-11-22 15:34:13,859 INFO L933 BasicCegarLoop]: 2260 mSDtfsCounter, 2543 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2543 SdHoareTripleChecker+Valid, 3299 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:13,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2543 Valid, 3299 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:34:13,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5410 states. [2021-11-22 15:34:14,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5410 to 4109. [2021-11-22 15:34:14,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4106 states have (on average 1.2830004870920604) internal successors, (5268), 4108 states have internal predecessors, (5268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:14,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 5268 transitions. [2021-11-22 15:34:14,313 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 5268 transitions. Word has length 110 [2021-11-22 15:34:14,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:14,314 INFO L470 AbstractCegarLoop]: Abstraction has 4109 states and 5268 transitions. [2021-11-22 15:34:14,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:14,314 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 5268 transitions. [2021-11-22 15:34:14,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:14,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:14,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:14,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-22 15:34:14,318 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:14,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:14,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1159950894, now seen corresponding path program 1 times [2021-11-22 15:34:14,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:14,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551199771] [2021-11-22 15:34:14,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:14,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:14,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:14,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:14,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551199771] [2021-11-22 15:34:14,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551199771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:14,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:14,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:34:14,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517637519] [2021-11-22 15:34:14,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:14,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:34:14,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:14,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:34:14,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:34:14,352 INFO L87 Difference]: Start difference. First operand 4109 states and 5268 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:14,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:14,859 INFO L93 Difference]: Finished difference Result 6894 states and 9293 transitions. [2021-11-22 15:34:14,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:34:14,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-22 15:34:14,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:14,865 INFO L225 Difference]: With dead ends: 6894 [2021-11-22 15:34:14,865 INFO L226 Difference]: Without dead ends: 5408 [2021-11-22 15:34:14,868 INFO L932 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 [2021-11-22 15:34:14,869 INFO L933 BasicCegarLoop]: 2253 mSDtfsCounter, 2537 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2537 SdHoareTripleChecker+Valid, 3287 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:14,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2537 Valid, 3287 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:34:14,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5408 states. [2021-11-22 15:34:15,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5408 to 4109. [2021-11-22 15:34:15,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4106 states have (on average 1.2822698490014612) internal successors, (5265), 4108 states have internal predecessors, (5265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:15,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 5265 transitions. [2021-11-22 15:34:15,146 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 5265 transitions. Word has length 110 [2021-11-22 15:34:15,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:15,146 INFO L470 AbstractCegarLoop]: Abstraction has 4109 states and 5265 transitions. [2021-11-22 15:34:15,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:15,147 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 5265 transitions. [2021-11-22 15:34:15,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:15,150 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:15,151 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:15,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-22 15:34:15,151 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:15,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:15,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1810160208, now seen corresponding path program 1 times [2021-11-22 15:34:15,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:15,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057946954] [2021-11-22 15:34:15,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:15,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:15,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:15,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:15,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057946954] [2021-11-22 15:34:15,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057946954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:15,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:15,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:34:15,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448642889] [2021-11-22 15:34:15,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:15,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:34:15,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:15,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:34:15,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:34:15,182 INFO L87 Difference]: Start difference. First operand 4109 states and 5265 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:15,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:15,625 INFO L93 Difference]: Finished difference Result 6892 states and 9282 transitions. [2021-11-22 15:34:15,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:34:15,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-22 15:34:15,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:15,630 INFO L225 Difference]: With dead ends: 6892 [2021-11-22 15:34:15,630 INFO L226 Difference]: Without dead ends: 5407 [2021-11-22 15:34:15,633 INFO L932 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 [2021-11-22 15:34:15,633 INFO L933 BasicCegarLoop]: 2248 mSDtfsCounter, 2532 mSDsluCounter, 1031 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2532 SdHoareTripleChecker+Valid, 3279 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:15,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2532 Valid, 3279 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:34:15,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5407 states. [2021-11-22 15:34:15,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5407 to 4109. [2021-11-22 15:34:15,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4106 states have (on average 1.281539210910862) internal successors, (5262), 4108 states have internal predecessors, (5262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:15,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 5262 transitions. [2021-11-22 15:34:15,920 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 5262 transitions. Word has length 110 [2021-11-22 15:34:15,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:15,921 INFO L470 AbstractCegarLoop]: Abstraction has 4109 states and 5262 transitions. [2021-11-22 15:34:15,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:15,921 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 5262 transitions. [2021-11-22 15:34:15,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:15,923 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:15,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:15,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-22 15:34:15,924 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:15,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:15,924 INFO L85 PathProgramCache]: Analyzing trace with hash -243402258, now seen corresponding path program 1 times [2021-11-22 15:34:15,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:15,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445018100] [2021-11-22 15:34:15,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:15,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:15,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:15,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445018100] [2021-11-22 15:34:15,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445018100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:15,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:15,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:34:15,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234836565] [2021-11-22 15:34:15,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:15,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:34:15,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:15,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:34:15,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:15,951 INFO L87 Difference]: Start difference. First operand 4109 states and 5262 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:16,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:16,286 INFO L93 Difference]: Finished difference Result 5593 states and 7400 transitions. [2021-11-22 15:34:16,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:34:16,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-22 15:34:16,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:16,291 INFO L225 Difference]: With dead ends: 5593 [2021-11-22 15:34:16,291 INFO L226 Difference]: Without dead ends: 4109 [2021-11-22 15:34:16,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:16,294 INFO L933 BasicCegarLoop]: 1295 mSDtfsCounter, 1200 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:16,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1200 Valid, 1372 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:16,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4109 states. [2021-11-22 15:34:16,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4109 to 4109. [2021-11-22 15:34:16,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4109 states, 4106 states have (on average 1.2752070141256697) internal successors, (5236), 4108 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:16,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4109 states to 4109 states and 5236 transitions. [2021-11-22 15:34:16,694 INFO L78 Accepts]: Start accepts. Automaton has 4109 states and 5236 transitions. Word has length 110 [2021-11-22 15:34:16,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:16,694 INFO L470 AbstractCegarLoop]: Abstraction has 4109 states and 5236 transitions. [2021-11-22 15:34:16,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:16,694 INFO L276 IsEmpty]: Start isEmpty. Operand 4109 states and 5236 transitions. [2021-11-22 15:34:16,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:16,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:16,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:16,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-22 15:34:16,696 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:16,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:16,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1972658606, now seen corresponding path program 1 times [2021-11-22 15:34:16,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:16,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735595711] [2021-11-22 15:34:16,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:16,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:16,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:16,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:16,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735595711] [2021-11-22 15:34:16,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735595711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:16,740 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:16,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:34:16,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685086155] [2021-11-22 15:34:16,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:16,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:34:16,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:16,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:34:16,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:34:16,742 INFO L87 Difference]: Start difference. First operand 4109 states and 5236 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:17,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:17,697 INFO L93 Difference]: Finished difference Result 8372 states and 11283 transitions. [2021-11-22 15:34:17,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:34:17,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-22 15:34:17,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:17,709 INFO L225 Difference]: With dead ends: 8372 [2021-11-22 15:34:17,709 INFO L226 Difference]: Without dead ends: 6895 [2021-11-22 15:34:17,714 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:34:17,715 INFO L933 BasicCegarLoop]: 2197 mSDtfsCounter, 3777 mSDsluCounter, 5748 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3777 SdHoareTripleChecker+Valid, 7945 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:17,715 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3777 Valid, 7945 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:34:17,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6895 states. [2021-11-22 15:34:18,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6895 to 4169. [2021-11-22 15:34:18,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4169 states, 4166 states have (on average 1.271243398943831) internal successors, (5296), 4168 states have internal predecessors, (5296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:18,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4169 states to 4169 states and 5296 transitions. [2021-11-22 15:34:18,085 INFO L78 Accepts]: Start accepts. Automaton has 4169 states and 5296 transitions. Word has length 110 [2021-11-22 15:34:18,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:18,085 INFO L470 AbstractCegarLoop]: Abstraction has 4169 states and 5296 transitions. [2021-11-22 15:34:18,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:18,085 INFO L276 IsEmpty]: Start isEmpty. Operand 4169 states and 5296 transitions. [2021-11-22 15:34:18,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-22 15:34:18,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:18,088 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:18,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-22 15:34:18,088 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:18,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:18,089 INFO L85 PathProgramCache]: Analyzing trace with hash -588204240, now seen corresponding path program 1 times [2021-11-22 15:34:18,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:18,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888155749] [2021-11-22 15:34:18,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:18,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:18,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:18,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:18,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888155749] [2021-11-22 15:34:18,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888155749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:18,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:18,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:34:18,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635470908] [2021-11-22 15:34:18,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:18,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:34:18,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:18,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:34:18,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:34:18,122 INFO L87 Difference]: Start difference. First operand 4169 states and 5296 transitions. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:18,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:18,921 INFO L93 Difference]: Finished difference Result 8368 states and 11180 transitions. [2021-11-22 15:34:18,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:34:18,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-22 15:34:18,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:18,928 INFO L225 Difference]: With dead ends: 8368 [2021-11-22 15:34:18,928 INFO L226 Difference]: Without dead ends: 6826 [2021-11-22 15:34:18,931 INFO L932 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 [2021-11-22 15:34:18,932 INFO L933 BasicCegarLoop]: 1328 mSDtfsCounter, 3231 mSDsluCounter, 2621 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3231 SdHoareTripleChecker+Valid, 3949 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:18,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3231 Valid, 3949 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:34:18,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6826 states. [2021-11-22 15:34:19,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6826 to 6606. [2021-11-22 15:34:19,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6606 states, 6603 states have (on average 1.311676510676965) internal successors, (8661), 6605 states have internal predecessors, (8661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:19,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6606 states to 6606 states and 8661 transitions. [2021-11-22 15:34:19,428 INFO L78 Accepts]: Start accepts. Automaton has 6606 states and 8661 transitions. Word has length 110 [2021-11-22 15:34:19,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:19,429 INFO L470 AbstractCegarLoop]: Abstraction has 6606 states and 8661 transitions. [2021-11-22 15:34:19,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:19,429 INFO L276 IsEmpty]: Start isEmpty. Operand 6606 states and 8661 transitions. [2021-11-22 15:34:19,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-22 15:34:19,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:19,431 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:19,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-22 15:34:19,432 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:19,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:19,432 INFO L85 PathProgramCache]: Analyzing trace with hash -768563568, now seen corresponding path program 1 times [2021-11-22 15:34:19,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:19,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142444564] [2021-11-22 15:34:19,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:19,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:19,469 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 15:34:19,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:19,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142444564] [2021-11-22 15:34:19,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142444564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:19,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:19,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:34:19,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877987477] [2021-11-22 15:34:19,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:19,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:34:19,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:19,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:34:19,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:34:19,472 INFO L87 Difference]: Start difference. First operand 6606 states and 8661 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:20,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:20,565 INFO L93 Difference]: Finished difference Result 13148 states and 17801 transitions. [2021-11-22 15:34:20,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:34:20,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-22 15:34:20,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:20,574 INFO L225 Difference]: With dead ends: 13148 [2021-11-22 15:34:20,574 INFO L226 Difference]: Without dead ends: 9179 [2021-11-22 15:34:20,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:34:20,580 INFO L933 BasicCegarLoop]: 1273 mSDtfsCounter, 3908 mSDsluCounter, 4799 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3908 SdHoareTripleChecker+Valid, 6072 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:20,581 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3908 Valid, 6072 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:34:20,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9179 states. [2021-11-22 15:34:21,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9179 to 6663. [2021-11-22 15:34:21,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6663 states, 6660 states have (on average 1.304054054054054) internal successors, (8685), 6662 states have internal predecessors, (8685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:21,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6663 states to 6663 states and 8685 transitions. [2021-11-22 15:34:21,097 INFO L78 Accepts]: Start accepts. Automaton has 6663 states and 8685 transitions. Word has length 129 [2021-11-22 15:34:21,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:21,098 INFO L470 AbstractCegarLoop]: Abstraction has 6663 states and 8685 transitions. [2021-11-22 15:34:21,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:21,098 INFO L276 IsEmpty]: Start isEmpty. Operand 6663 states and 8685 transitions. [2021-11-22 15:34:21,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-22 15:34:21,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:21,102 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:21,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-22 15:34:21,102 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:21,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:21,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1763257266, now seen corresponding path program 1 times [2021-11-22 15:34:21,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:21,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137377077] [2021-11-22 15:34:21,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:21,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:21,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:21,143 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 15:34:21,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:21,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137377077] [2021-11-22 15:34:21,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137377077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:21,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:21,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:34:21,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780847419] [2021-11-22 15:34:21,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:21,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:34:21,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:21,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:34:21,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:34:21,145 INFO L87 Difference]: Start difference. First operand 6663 states and 8685 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:21,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:21,939 INFO L93 Difference]: Finished difference Result 11684 states and 15588 transitions. [2021-11-22 15:34:21,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:34:21,939 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-22 15:34:21,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:21,947 INFO L225 Difference]: With dead ends: 11684 [2021-11-22 15:34:21,947 INFO L226 Difference]: Without dead ends: 7665 [2021-11-22 15:34:21,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:34:21,953 INFO L933 BasicCegarLoop]: 1364 mSDtfsCounter, 3104 mSDsluCounter, 2187 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3104 SdHoareTripleChecker+Valid, 3551 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:21,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3104 Valid, 3551 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:34:21,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7665 states. [2021-11-22 15:34:22,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7665 to 6669. [2021-11-22 15:34:22,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6669 states, 6666 states have (on average 1.2962796279627964) internal successors, (8641), 6668 states have internal predecessors, (8641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:22,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6669 states to 6669 states and 8641 transitions. [2021-11-22 15:34:22,496 INFO L78 Accepts]: Start accepts. Automaton has 6669 states and 8641 transitions. Word has length 129 [2021-11-22 15:34:22,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:22,496 INFO L470 AbstractCegarLoop]: Abstraction has 6669 states and 8641 transitions. [2021-11-22 15:34:22,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:22,496 INFO L276 IsEmpty]: Start isEmpty. Operand 6669 states and 8641 transitions. [2021-11-22 15:34:22,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-22 15:34:22,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:22,500 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:22,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-22 15:34:22,501 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:22,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:22,501 INFO L85 PathProgramCache]: Analyzing trace with hash -196499316, now seen corresponding path program 1 times [2021-11-22 15:34:22,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:22,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114422972] [2021-11-22 15:34:22,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:22,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:22,534 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 15:34:22,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:22,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114422972] [2021-11-22 15:34:22,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114422972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:22,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:22,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:34:22,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025250791] [2021-11-22 15:34:22,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:22,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:34:22,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:22,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:34:22,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:22,537 INFO L87 Difference]: Start difference. First operand 6669 states and 8641 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:23,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:23,449 INFO L93 Difference]: Finished difference Result 14245 states and 18981 transitions. [2021-11-22 15:34:23,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:34:23,449 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-22 15:34:23,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:23,460 INFO L225 Difference]: With dead ends: 14245 [2021-11-22 15:34:23,460 INFO L226 Difference]: Without dead ends: 10229 [2021-11-22 15:34:23,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:34:23,467 INFO L933 BasicCegarLoop]: 1276 mSDtfsCounter, 1125 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1125 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:23,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1125 Valid, 2288 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:23,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10229 states. [2021-11-22 15:34:24,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10229 to 10213. [2021-11-22 15:34:24,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10213 states, 10210 states have (on average 1.3153770812928502) internal successors, (13430), 10212 states have internal predecessors, (13430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:24,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10213 states to 10213 states and 13430 transitions. [2021-11-22 15:34:24,399 INFO L78 Accepts]: Start accepts. Automaton has 10213 states and 13430 transitions. Word has length 129 [2021-11-22 15:34:24,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:24,399 INFO L470 AbstractCegarLoop]: Abstraction has 10213 states and 13430 transitions. [2021-11-22 15:34:24,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:24,399 INFO L276 IsEmpty]: Start isEmpty. Operand 10213 states and 13430 transitions. [2021-11-22 15:34:24,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-22 15:34:24,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:24,403 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:24,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-22 15:34:24,403 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:24,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:24,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1470620267, now seen corresponding path program 1 times [2021-11-22 15:34:24,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:24,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637439887] [2021-11-22 15:34:24,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:24,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:24,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 15:34:24,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:24,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637439887] [2021-11-22 15:34:24,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637439887] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:24,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:24,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:34:24,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627614521] [2021-11-22 15:34:24,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:24,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:34:24,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:24,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:34:24,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:34:24,448 INFO L87 Difference]: Start difference. First operand 10213 states and 13430 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:26,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:26,076 INFO L93 Difference]: Finished difference Result 23700 states and 31901 transitions. [2021-11-22 15:34:26,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:34:26,076 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-22 15:34:26,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:26,094 INFO L225 Difference]: With dead ends: 23700 [2021-11-22 15:34:26,094 INFO L226 Difference]: Without dead ends: 16144 [2021-11-22 15:34:26,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:34:26,103 INFO L933 BasicCegarLoop]: 1255 mSDtfsCounter, 3221 mSDsluCounter, 4690 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3221 SdHoareTripleChecker+Valid, 5945 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:26,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3221 Valid, 5945 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:34:26,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16144 states. [2021-11-22 15:34:27,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16144 to 10366. [2021-11-22 15:34:27,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10366 states, 10363 states have (on average 1.3062819646820418) internal successors, (13537), 10365 states have internal predecessors, (13537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:27,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10366 states to 10366 states and 13537 transitions. [2021-11-22 15:34:27,112 INFO L78 Accepts]: Start accepts. Automaton has 10366 states and 13537 transitions. Word has length 129 [2021-11-22 15:34:27,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:27,113 INFO L470 AbstractCegarLoop]: Abstraction has 10366 states and 13537 transitions. [2021-11-22 15:34:27,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:27,113 INFO L276 IsEmpty]: Start isEmpty. Operand 10366 states and 13537 transitions. [2021-11-22 15:34:27,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-22 15:34:27,116 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:27,117 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:27,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-22 15:34:27,117 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:27,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:27,118 INFO L85 PathProgramCache]: Analyzing trace with hash -915889239, now seen corresponding path program 1 times [2021-11-22 15:34:27,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:27,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688444504] [2021-11-22 15:34:27,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:27,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:27,158 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 15:34:27,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:27,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688444504] [2021-11-22 15:34:27,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688444504] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:27,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:27,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:34:27,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492532182] [2021-11-22 15:34:27,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:27,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:34:27,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:27,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:34:27,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:34:27,161 INFO L87 Difference]: Start difference. First operand 10366 states and 13537 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:29,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:29,079 INFO L93 Difference]: Finished difference Result 28903 states and 38736 transitions. [2021-11-22 15:34:29,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:34:29,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-22 15:34:29,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:29,106 INFO L225 Difference]: With dead ends: 28903 [2021-11-22 15:34:29,106 INFO L226 Difference]: Without dead ends: 21201 [2021-11-22 15:34:29,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:34:29,116 INFO L933 BasicCegarLoop]: 1491 mSDtfsCounter, 2922 mSDsluCounter, 4718 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2922 SdHoareTripleChecker+Valid, 6209 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:29,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2922 Valid, 6209 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:34:29,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21201 states. [2021-11-22 15:34:30,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21201 to 10657. [2021-11-22 15:34:30,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10657 states, 10654 states have (on average 1.297916275577248) internal successors, (13828), 10656 states have internal predecessors, (13828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:30,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10657 states to 10657 states and 13828 transitions. [2021-11-22 15:34:30,275 INFO L78 Accepts]: Start accepts. Automaton has 10657 states and 13828 transitions. Word has length 129 [2021-11-22 15:34:30,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:30,276 INFO L470 AbstractCegarLoop]: Abstraction has 10657 states and 13828 transitions. [2021-11-22 15:34:30,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:30,276 INFO L276 IsEmpty]: Start isEmpty. Operand 10657 states and 13828 transitions. [2021-11-22 15:34:30,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-22 15:34:30,279 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:30,279 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:30,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-22 15:34:30,280 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:30,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:30,280 INFO L85 PathProgramCache]: Analyzing trace with hash -970282137, now seen corresponding path program 1 times [2021-11-22 15:34:30,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:30,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881621718] [2021-11-22 15:34:30,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:30,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:30,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 15:34:30,318 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:30,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881621718] [2021-11-22 15:34:30,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881621718] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:30,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:30,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:34:30,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57647140] [2021-11-22 15:34:30,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:30,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:34:30,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:30,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:34:30,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:34:30,320 INFO L87 Difference]: Start difference. First operand 10657 states and 13828 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:32,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:32,828 INFO L93 Difference]: Finished difference Result 32688 states and 43119 transitions. [2021-11-22 15:34:32,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:34:32,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 129 [2021-11-22 15:34:32,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:32,862 INFO L225 Difference]: With dead ends: 32688 [2021-11-22 15:34:32,862 INFO L226 Difference]: Without dead ends: 24700 [2021-11-22 15:34:32,873 INFO L932 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 [2021-11-22 15:34:32,874 INFO L933 BasicCegarLoop]: 1326 mSDtfsCounter, 3110 mSDsluCounter, 2822 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3110 SdHoareTripleChecker+Valid, 4148 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:32,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3110 Valid, 4148 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:34:32,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24700 states. [2021-11-22 15:34:35,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24700 to 23956. [2021-11-22 15:34:35,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23956 states, 23953 states have (on average 1.3063499352899428) internal successors, (31291), 23955 states have internal predecessors, (31291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:35,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23956 states to 23956 states and 31291 transitions. [2021-11-22 15:34:35,733 INFO L78 Accepts]: Start accepts. Automaton has 23956 states and 31291 transitions. Word has length 129 [2021-11-22 15:34:35,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:35,734 INFO L470 AbstractCegarLoop]: Abstraction has 23956 states and 31291 transitions. [2021-11-22 15:34:35,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:35,734 INFO L276 IsEmpty]: Start isEmpty. Operand 23956 states and 31291 transitions. [2021-11-22 15:34:35,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-22 15:34:35,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:35,738 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:35,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-22 15:34:35,738 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:35,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:35,739 INFO L85 PathProgramCache]: Analyzing trace with hash 169050348, now seen corresponding path program 1 times [2021-11-22 15:34:35,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:35,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838680075] [2021-11-22 15:34:35,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:35,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:35,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 15:34:35,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:35,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838680075] [2021-11-22 15:34:35,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838680075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:35,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:35,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:34:35,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082375374] [2021-11-22 15:34:35,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:35,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:34:35,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:35,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:34:35,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:34:35,783 INFO L87 Difference]: Start difference. First operand 23956 states and 31291 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:39,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:39,173 INFO L93 Difference]: Finished difference Result 55623 states and 73464 transitions. [2021-11-22 15:34:39,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:34:39,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 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 134 [2021-11-22 15:34:39,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:39,228 INFO L225 Difference]: With dead ends: 55623 [2021-11-22 15:34:39,228 INFO L226 Difference]: Without dead ends: 34340 [2021-11-22 15:34:39,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:34:39,248 INFO L933 BasicCegarLoop]: 1282 mSDtfsCounter, 2748 mSDsluCounter, 4237 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2748 SdHoareTripleChecker+Valid, 5519 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:39,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2748 Valid, 5519 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:34:39,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34340 states. [2021-11-22 15:34:42,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34340 to 24244. [2021-11-22 15:34:42,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24244 states, 24241 states have (on average 1.2960686440328368) internal successors, (31418), 24243 states have internal predecessors, (31418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:42,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24244 states to 24244 states and 31418 transitions. [2021-11-22 15:34:42,485 INFO L78 Accepts]: Start accepts. Automaton has 24244 states and 31418 transitions. Word has length 134 [2021-11-22 15:34:42,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:42,486 INFO L470 AbstractCegarLoop]: Abstraction has 24244 states and 31418 transitions. [2021-11-22 15:34:42,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:42,486 INFO L276 IsEmpty]: Start isEmpty. Operand 24244 states and 31418 transitions. [2021-11-22 15:34:42,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-22 15:34:42,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:42,489 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:42,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-22 15:34:42,489 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:42,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:42,491 INFO L85 PathProgramCache]: Analyzing trace with hash -248346258, now seen corresponding path program 1 times [2021-11-22 15:34:42,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:42,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182164841] [2021-11-22 15:34:42,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:42,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:42,530 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 15:34:42,530 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:42,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182164841] [2021-11-22 15:34:42,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182164841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:42,531 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:42,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:34:42,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024933125] [2021-11-22 15:34:42,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:42,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:34:42,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:42,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:34:42,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:34:42,532 INFO L87 Difference]: Start difference. First operand 24244 states and 31418 transitions. Second operand has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:46,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:46,623 INFO L93 Difference]: Finished difference Result 53794 states and 70085 transitions. [2021-11-22 15:34:46,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:34:46,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 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 134 [2021-11-22 15:34:46,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:46,665 INFO L225 Difference]: With dead ends: 53794 [2021-11-22 15:34:46,665 INFO L226 Difference]: Without dead ends: 32230 [2021-11-22 15:34:46,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:34:46,684 INFO L933 BasicCegarLoop]: 1248 mSDtfsCounter, 2448 mSDsluCounter, 3412 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2448 SdHoareTripleChecker+Valid, 4660 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:46,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2448 Valid, 4660 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:34:46,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32230 states. [2021-11-22 15:34:49,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32230 to 24280. [2021-11-22 15:34:49,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24280 states, 24277 states have (on average 1.2855377517815216) internal successors, (31209), 24279 states have internal predecessors, (31209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:49,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24280 states to 24280 states and 31209 transitions. [2021-11-22 15:34:49,906 INFO L78 Accepts]: Start accepts. Automaton has 24280 states and 31209 transitions. Word has length 134 [2021-11-22 15:34:49,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:49,906 INFO L470 AbstractCegarLoop]: Abstraction has 24280 states and 31209 transitions. [2021-11-22 15:34:49,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:49,907 INFO L276 IsEmpty]: Start isEmpty. Operand 24280 states and 31209 transitions. [2021-11-22 15:34:49,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-22 15:34:49,909 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:49,910 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:49,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-22 15:34:49,910 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:49,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:49,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1012570992, now seen corresponding path program 1 times [2021-11-22 15:34:49,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:49,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423963290] [2021-11-22 15:34:49,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:49,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:49,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:49,950 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 15:34:49,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:49,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423963290] [2021-11-22 15:34:49,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423963290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:49,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:49,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:34:49,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815630268] [2021-11-22 15:34:49,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:49,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:34:49,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:49,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:34:49,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:34:49,953 INFO L87 Difference]: Start difference. First operand 24280 states and 31209 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:53,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:34:53,036 INFO L93 Difference]: Finished difference Result 45875 states and 59226 transitions. [2021-11-22 15:34:53,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:34:53,036 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 134 [2021-11-22 15:34:53,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:34:53,058 INFO L225 Difference]: With dead ends: 45875 [2021-11-22 15:34:53,058 INFO L226 Difference]: Without dead ends: 24280 [2021-11-22 15:34:53,071 INFO L932 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 [2021-11-22 15:34:53,072 INFO L933 BasicCegarLoop]: 1261 mSDtfsCounter, 2459 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2459 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:34:53,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2459 Valid, 1261 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:34:53,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24280 states. [2021-11-22 15:34:56,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24280 to 24280. [2021-11-22 15:34:56,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24280 states, 24277 states have (on average 1.2825307904601062) internal successors, (31136), 24279 states have internal predecessors, (31136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:56,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24280 states to 24280 states and 31136 transitions. [2021-11-22 15:34:56,121 INFO L78 Accepts]: Start accepts. Automaton has 24280 states and 31136 transitions. Word has length 134 [2021-11-22 15:34:56,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:34:56,121 INFO L470 AbstractCegarLoop]: Abstraction has 24280 states and 31136 transitions. [2021-11-22 15:34:56,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:34:56,121 INFO L276 IsEmpty]: Start isEmpty. Operand 24280 states and 31136 transitions. [2021-11-22 15:34:56,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-22 15:34:56,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:34:56,125 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:34:56,125 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-22 15:34:56,125 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-11-22 15:34:56,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:34:56,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1744056274, now seen corresponding path program 1 times [2021-11-22 15:34:56,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:34:56,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470452959] [2021-11-22 15:34:56,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:56,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:34:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:56,172 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 15:34:56,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:34:56,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470452959] [2021-11-22 15:34:56,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470452959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:34:56,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:34:56,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 15:34:56,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821089770] [2021-11-22 15:34:56,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:34:56,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:34:56,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:34:56,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:34:56,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:34:56,176 INFO L87 Difference]: Start difference. First operand 24280 states and 31136 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)