./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label06.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20018a20-e4d0-4db2-ba31-31d8598baf7e/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20018a20-e4d0-4db2-ba31-31d8598baf7e/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20018a20-e4d0-4db2-ba31-31d8598baf7e/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20018a20-e4d0-4db2-ba31-31d8598baf7e/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label06.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20018a20-e4d0-4db2-ba31-31d8598baf7e/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20018a20-e4d0-4db2-ba31-31d8598baf7e/bin/uautomizer-ug76WZFUDN --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 782b97ab44d54cd800983e700b0d1573a763da7ea88502d61372bfc21545a0f2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:09:09,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:09:09,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:09:09,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:09:09,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:09:09,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:09:09,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:09:09,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:09:09,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:09:09,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:09:09,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:09:09,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:09:09,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:09:09,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:09:09,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:09:09,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:09:09,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:09:09,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:09:09,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:09:09,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:09:09,611 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:09:09,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:09:09,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:09:09,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:09:09,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:09:09,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:09:09,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:09:09,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:09:09,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:09:09,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:09:09,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:09:09,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:09:09,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:09:09,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:09:09,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:09:09,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:09:09,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:09:09,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:09:09,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:09:09,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:09:09,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:09:09,640 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20018a20-e4d0-4db2-ba31-31d8598baf7e/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:09:09,680 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:09:09,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:09:09,681 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:09:09,681 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:09:09,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:09:09,682 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:09:09,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:09:09,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:09:09,684 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:09:09,684 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:09:09,685 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:09:09,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:09:09,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:09:09,697 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:09:09,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:09:09,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:09:09,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:09:09,697 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:09:09,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:09:09,698 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:09:09,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:09:09,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:09:09,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:09:09,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:09:09,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:09:09,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:09:09,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:09:09,699 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:09:09,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:09:09,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:09:09,701 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:09:09,701 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:09:09,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:09:09,701 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_20018a20-e4d0-4db2-ba31-31d8598baf7e/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20018a20-e4d0-4db2-ba31-31d8598baf7e/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 782b97ab44d54cd800983e700b0d1573a763da7ea88502d61372bfc21545a0f2 [2022-11-20 11:09:10,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:09:10,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:09:10,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:09:10,073 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:09:10,073 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:09:10,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20018a20-e4d0-4db2-ba31-31d8598baf7e/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label06.c [2022-11-20 11:09:13,079 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:09:13,645 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:09:13,646 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20018a20-e4d0-4db2-ba31-31d8598baf7e/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label06.c [2022-11-20 11:09:13,686 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20018a20-e4d0-4db2-ba31-31d8598baf7e/bin/uautomizer-ug76WZFUDN/data/215d783f3/1dec614694fc4716803071eb6963e1f9/FLAG70af19421 [2022-11-20 11:09:13,706 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20018a20-e4d0-4db2-ba31-31d8598baf7e/bin/uautomizer-ug76WZFUDN/data/215d783f3/1dec614694fc4716803071eb6963e1f9 [2022-11-20 11:09:13,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:09:13,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:09:13,714 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:09:13,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:09:13,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:09:13,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:09:13" (1/1) ... [2022-11-20 11:09:13,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53f681d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:13, skipping insertion in model container [2022-11-20 11:09:13,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:09:13" (1/1) ... [2022-11-20 11:09:13,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:09:13,864 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:09:14,286 WARN L237 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_20018a20-e4d0-4db2-ba31-31d8598baf7e/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label06.c[26860,26873] [2022-11-20 11:09:14,339 WARN L237 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_20018a20-e4d0-4db2-ba31-31d8598baf7e/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label06.c[29677,29690] [2022-11-20 11:09:15,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:09:15,338 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:09:15,415 WARN L237 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_20018a20-e4d0-4db2-ba31-31d8598baf7e/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label06.c[26860,26873] [2022-11-20 11:09:15,428 WARN L237 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_20018a20-e4d0-4db2-ba31-31d8598baf7e/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label06.c[29677,29690] [2022-11-20 11:09:16,041 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:09:16,074 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:09:16,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:16 WrapperNode [2022-11-20 11:09:16,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:09:16,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:09:16,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:09:16,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:09:16,085 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:16" (1/1) ... [2022-11-20 11:09:16,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:16" (1/1) ... [2022-11-20 11:09:16,547 INFO L138 Inliner]: procedures = 39, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5249 [2022-11-20 11:09:16,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:09:16,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:09:16,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:09:16,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:09:16,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:16" (1/1) ... [2022-11-20 11:09:16,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:16" (1/1) ... [2022-11-20 11:09:16,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:16" (1/1) ... [2022-11-20 11:09:16,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:16" (1/1) ... [2022-11-20 11:09:16,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:16" (1/1) ... [2022-11-20 11:09:16,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:16" (1/1) ... [2022-11-20 11:09:16,929 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:16" (1/1) ... [2022-11-20 11:09:16,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:16" (1/1) ... [2022-11-20 11:09:17,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:09:17,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:09:17,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:09:17,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:09:17,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:16" (1/1) ... [2022-11-20 11:09:17,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:09:17,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20018a20-e4d0-4db2-ba31-31d8598baf7e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:09:17,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20018a20-e4d0-4db2-ba31-31d8598baf7e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:09:17,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20018a20-e4d0-4db2-ba31-31d8598baf7e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:09:17,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:09:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:09:17,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:09:17,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:09:17,604 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:09:17,607 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:09:22,653 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:09:22,670 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:09:22,670 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:09:22,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:09:22 BoogieIcfgContainer [2022-11-20 11:09:22,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:09:22,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:09:22,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:09:22,679 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:09:22,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:09:13" (1/3) ... [2022-11-20 11:09:22,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a57e321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:09:22, skipping insertion in model container [2022-11-20 11:09:22,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:16" (2/3) ... [2022-11-20 11:09:22,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a57e321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:09:22, skipping insertion in model container [2022-11-20 11:09:22,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:09:22" (3/3) ... [2022-11-20 11:09:22,682 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label06.c [2022-11-20 11:09:22,702 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:09:22,702 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 11:09:22,770 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:09:22,778 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@8078e43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:09:22,778 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 11:09:22,787 INFO L276 IsEmpty]: Start isEmpty. Operand has 947 states, 944 states have (on average 1.9036016949152543) internal successors, (1797), 946 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:22,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 11:09:22,795 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:22,796 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:22,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:22,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:22,802 INFO L85 PathProgramCache]: Analyzing trace with hash -491545995, now seen corresponding path program 1 times [2022-11-20 11:09:22,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:22,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650372023] [2022-11-20 11:09:22,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:22,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:23,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:23,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:23,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650372023] [2022-11-20 11:09:23,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650372023] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:23,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:23,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:09:23,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017108138] [2022-11-20 11:09:23,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:23,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:09:23,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:23,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:09:23,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:23,240 INFO L87 Difference]: Start difference. First operand has 947 states, 944 states have (on average 1.9036016949152543) internal successors, (1797), 946 states have internal predecessors, (1797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:28,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:28,176 INFO L93 Difference]: Finished difference Result 2582 states and 4966 transitions. [2022-11-20 11:09:28,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:09:28,180 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-20 11:09:28,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:28,216 INFO L225 Difference]: With dead ends: 2582 [2022-11-20 11:09:28,219 INFO L226 Difference]: Without dead ends: 1632 [2022-11-20 11:09:28,229 INFO L412 NwaCegarLoop]: 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 [2022-11-20 11:09:28,235 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1102 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:28,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 386 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-20 11:09:28,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2022-11-20 11:09:28,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1632. [2022-11-20 11:09:28,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1630 states have (on average 1.8423312883435583) internal successors, (3003), 1631 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:28,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 3003 transitions. [2022-11-20 11:09:28,361 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 3003 transitions. Word has length 24 [2022-11-20 11:09:28,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:28,361 INFO L495 AbstractCegarLoop]: Abstraction has 1632 states and 3003 transitions. [2022-11-20 11:09:28,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:28,362 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 3003 transitions. [2022-11-20 11:09:28,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-20 11:09:28,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:28,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:28,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:09:28,364 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:28,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:28,365 INFO L85 PathProgramCache]: Analyzing trace with hash -194578388, now seen corresponding path program 1 times [2022-11-20 11:09:28,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:28,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133248927] [2022-11-20 11:09:28,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:28,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:28,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:28,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:28,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:28,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133248927] [2022-11-20 11:09:28,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133248927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:28,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:28,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:09:28,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715936667] [2022-11-20 11:09:28,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:28,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:09:28,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:28,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:09:28,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:09:28,647 INFO L87 Difference]: Start difference. First operand 1632 states and 3003 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:28,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:28,784 INFO L93 Difference]: Finished difference Result 1696 states and 3104 transitions. [2022-11-20 11:09:28,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:09:28,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-11-20 11:09:28,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:28,792 INFO L225 Difference]: With dead ends: 1696 [2022-11-20 11:09:28,792 INFO L226 Difference]: Without dead ends: 1632 [2022-11-20 11:09:28,793 INFO L412 NwaCegarLoop]: 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 [2022-11-20 11:09:28,795 INFO L413 NwaCegarLoop]: 1662 mSDtfsCounter, 3 mSDsluCounter, 4922 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6584 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:28,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6584 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:09:28,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2022-11-20 11:09:28,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1632. [2022-11-20 11:09:28,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1632 states, 1630 states have (on average 1.8049079754601227) internal successors, (2942), 1631 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:28,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 2942 transitions. [2022-11-20 11:09:28,844 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 2942 transitions. Word has length 30 [2022-11-20 11:09:28,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:28,845 INFO L495 AbstractCegarLoop]: Abstraction has 1632 states and 2942 transitions. [2022-11-20 11:09:28,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:28,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 2942 transitions. [2022-11-20 11:09:28,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-20 11:09:28,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:28,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:28,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:09:28,859 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:28,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:28,860 INFO L85 PathProgramCache]: Analyzing trace with hash 255619932, now seen corresponding path program 1 times [2022-11-20 11:09:28,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:28,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395925009] [2022-11-20 11:09:28,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:28,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:29,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:29,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:29,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395925009] [2022-11-20 11:09:29,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395925009] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:29,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:29,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:09:29,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057539951] [2022-11-20 11:09:29,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:29,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:09:29,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:29,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:09:29,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:09:29,300 INFO L87 Difference]: Start difference. First operand 1632 states and 2942 transitions. Second operand has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:30,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:30,000 INFO L93 Difference]: Finished difference Result 2592 states and 4494 transitions. [2022-11-20 11:09:30,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:09:30,001 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2022-11-20 11:09:30,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:30,011 INFO L225 Difference]: With dead ends: 2592 [2022-11-20 11:09:30,012 INFO L226 Difference]: Without dead ends: 2532 [2022-11-20 11:09:30,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-11-20 11:09:30,014 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 13373 mSDsluCounter, 4789 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13373 SdHoareTripleChecker+Valid, 6388 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:30,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13373 Valid, 6388 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:09:30,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2532 states. [2022-11-20 11:09:30,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2532 to 1690. [2022-11-20 11:09:30,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1688 states have (on average 1.7985781990521328) internal successors, (3036), 1689 states have internal predecessors, (3036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:30,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 3036 transitions. [2022-11-20 11:09:30,162 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 3036 transitions. Word has length 90 [2022-11-20 11:09:30,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:30,164 INFO L495 AbstractCegarLoop]: Abstraction has 1690 states and 3036 transitions. [2022-11-20 11:09:30,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.0) internal successors, (90), 10 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:30,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 3036 transitions. [2022-11-20 11:09:30,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-20 11:09:30,167 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:30,167 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:30,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:09:30,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:30,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:30,171 INFO L85 PathProgramCache]: Analyzing trace with hash -578069748, now seen corresponding path program 1 times [2022-11-20 11:09:30,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:30,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326470957] [2022-11-20 11:09:30,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:30,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:30,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:30,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:30,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326470957] [2022-11-20 11:09:30,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326470957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:30,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:30,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:09:30,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921016524] [2022-11-20 11:09:30,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:30,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:09:30,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:30,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:09:30,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:30,371 INFO L87 Difference]: Start difference. First operand 1690 states and 3036 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:30,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:30,457 INFO L93 Difference]: Finished difference Result 1915 states and 3399 transitions. [2022-11-20 11:09:30,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:09:30,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-11-20 11:09:30,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:30,465 INFO L225 Difference]: With dead ends: 1915 [2022-11-20 11:09:30,466 INFO L226 Difference]: Without dead ends: 1797 [2022-11-20 11:09:30,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:30,468 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 1506 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1506 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:30,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1506 Valid, 1693 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:09:30,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2022-11-20 11:09:30,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1795. [2022-11-20 11:09:30,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1793 states have (on average 1.7869492470719464) internal successors, (3204), 1794 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:30,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 3204 transitions. [2022-11-20 11:09:30,553 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 3204 transitions. Word has length 92 [2022-11-20 11:09:30,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:30,554 INFO L495 AbstractCegarLoop]: Abstraction has 1795 states and 3204 transitions. [2022-11-20 11:09:30,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:30,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 3204 transitions. [2022-11-20 11:09:30,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-20 11:09:30,556 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:30,556 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:30,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:09:30,557 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:30,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:30,558 INFO L85 PathProgramCache]: Analyzing trace with hash -511576236, now seen corresponding path program 1 times [2022-11-20 11:09:30,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:30,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802540186] [2022-11-20 11:09:30,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:30,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:31,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:31,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:31,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802540186] [2022-11-20 11:09:31,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802540186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:31,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:31,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:09:31,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066152225] [2022-11-20 11:09:31,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:31,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:09:31,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:31,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:09:31,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:09:31,173 INFO L87 Difference]: Start difference. First operand 1795 states and 3204 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:31,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:31,748 INFO L93 Difference]: Finished difference Result 2020 states and 3564 transitions. [2022-11-20 11:09:31,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:09:31,748 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2022-11-20 11:09:31,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:31,756 INFO L225 Difference]: With dead ends: 2020 [2022-11-20 11:09:31,756 INFO L226 Difference]: Without dead ends: 1797 [2022-11-20 11:09:31,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:09:31,758 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 3474 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3474 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:31,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3474 Valid, 2257 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:09:31,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2022-11-20 11:09:31,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1795. [2022-11-20 11:09:31,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1795 states, 1793 states have (on average 1.7858337981037367) internal successors, (3202), 1794 states have internal predecessors, (3202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:31,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1795 states to 1795 states and 3202 transitions. [2022-11-20 11:09:31,828 INFO L78 Accepts]: Start accepts. Automaton has 1795 states and 3202 transitions. Word has length 92 [2022-11-20 11:09:31,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:31,829 INFO L495 AbstractCegarLoop]: Abstraction has 1795 states and 3202 transitions. [2022-11-20 11:09:31,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:31,829 INFO L276 IsEmpty]: Start isEmpty. Operand 1795 states and 3202 transitions. [2022-11-20 11:09:31,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-20 11:09:31,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:31,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:31,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:09:31,831 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:31,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:31,832 INFO L85 PathProgramCache]: Analyzing trace with hash 906283047, now seen corresponding path program 1 times [2022-11-20 11:09:31,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:31,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114230317] [2022-11-20 11:09:31,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:31,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:32,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:32,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:32,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114230317] [2022-11-20 11:09:32,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114230317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:32,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:32,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:09:32,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756579461] [2022-11-20 11:09:32,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:32,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:09:32,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:32,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:09:32,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:09:32,142 INFO L87 Difference]: Start difference. First operand 1795 states and 3202 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:32,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:32,285 INFO L93 Difference]: Finished difference Result 2015 states and 3549 transitions. [2022-11-20 11:09:32,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:09:32,286 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-11-20 11:09:32,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:32,295 INFO L225 Difference]: With dead ends: 2015 [2022-11-20 11:09:32,296 INFO L226 Difference]: Without dead ends: 2013 [2022-11-20 11:09:32,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:09:32,301 INFO L413 NwaCegarLoop]: 1691 mSDtfsCounter, 262 mSDsluCounter, 4811 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 6502 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:32,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 6502 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:09:32,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2022-11-20 11:09:32,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1801. [2022-11-20 11:09:32,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1801 states, 1799 states have (on average 1.7826570316842691) internal successors, (3207), 1800 states have internal predecessors, (3207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:32,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 3207 transitions. [2022-11-20 11:09:32,444 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 3207 transitions. Word has length 93 [2022-11-20 11:09:32,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:32,445 INFO L495 AbstractCegarLoop]: Abstraction has 1801 states and 3207 transitions. [2022-11-20 11:09:32,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:32,445 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 3207 transitions. [2022-11-20 11:09:32,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-20 11:09:32,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:32,447 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:32,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:09:32,447 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:32,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:32,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1708775584, now seen corresponding path program 1 times [2022-11-20 11:09:32,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:32,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146502050] [2022-11-20 11:09:32,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:32,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:32,683 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:32,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:32,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146502050] [2022-11-20 11:09:32,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146502050] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:32,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:32,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:09:32,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142933583] [2022-11-20 11:09:32,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:32,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:09:32,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:32,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:09:32,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:32,686 INFO L87 Difference]: Start difference. First operand 1801 states and 3207 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:37,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:37,197 INFO L93 Difference]: Finished difference Result 4807 states and 8758 transitions. [2022-11-20 11:09:37,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:09:37,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2022-11-20 11:09:37,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:37,211 INFO L225 Difference]: With dead ends: 4807 [2022-11-20 11:09:37,211 INFO L226 Difference]: Without dead ends: 3303 [2022-11-20 11:09:37,214 INFO L412 NwaCegarLoop]: 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 [2022-11-20 11:09:37,215 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 893 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:37,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 639 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-20 11:09:37,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3303 states. [2022-11-20 11:09:37,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3303 to 3303. [2022-11-20 11:09:37,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3303 states, 3301 states have (on average 1.5537715843683733) internal successors, (5129), 3302 states have internal predecessors, (5129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:37,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3303 states to 3303 states and 5129 transitions. [2022-11-20 11:09:37,328 INFO L78 Accepts]: Start accepts. Automaton has 3303 states and 5129 transitions. Word has length 93 [2022-11-20 11:09:37,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:37,329 INFO L495 AbstractCegarLoop]: Abstraction has 3303 states and 5129 transitions. [2022-11-20 11:09:37,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 2 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:37,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3303 states and 5129 transitions. [2022-11-20 11:09:37,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 11:09:37,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:37,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:37,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:09:37,332 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:37,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:37,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1719553388, now seen corresponding path program 1 times [2022-11-20 11:09:37,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:37,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266063625] [2022-11-20 11:09:37,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:37,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:37,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:37,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266063625] [2022-11-20 11:09:37,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266063625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:37,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:37,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:09:37,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684309775] [2022-11-20 11:09:37,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:37,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:09:37,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:37,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:09:37,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:37,488 INFO L87 Difference]: Start difference. First operand 3303 states and 5129 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:37,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:37,587 INFO L93 Difference]: Finished difference Result 3545 states and 5510 transitions. [2022-11-20 11:09:37,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:09:37,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-20 11:09:37,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:37,599 INFO L225 Difference]: With dead ends: 3545 [2022-11-20 11:09:37,599 INFO L226 Difference]: Without dead ends: 3421 [2022-11-20 11:09:37,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:37,603 INFO L413 NwaCegarLoop]: 1685 mSDtfsCounter, 1526 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1783 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 [2022-11-20 11:09:37,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 1783 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:09:37,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3421 states. [2022-11-20 11:09:37,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3421 to 3419. [2022-11-20 11:09:37,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3419 states, 3417 states have (on average 1.5539947322212466) internal successors, (5310), 3418 states have internal predecessors, (5310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:37,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3419 states to 3419 states and 5310 transitions. [2022-11-20 11:09:37,737 INFO L78 Accepts]: Start accepts. Automaton has 3419 states and 5310 transitions. Word has length 94 [2022-11-20 11:09:37,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:37,737 INFO L495 AbstractCegarLoop]: Abstraction has 3419 states and 5310 transitions. [2022-11-20 11:09:37,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:37,738 INFO L276 IsEmpty]: Start isEmpty. Operand 3419 states and 5310 transitions. [2022-11-20 11:09:37,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 11:09:37,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:37,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:37,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:09:37,746 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:37,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:37,746 INFO L85 PathProgramCache]: Analyzing trace with hash 593433492, now seen corresponding path program 1 times [2022-11-20 11:09:37,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:37,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937297383] [2022-11-20 11:09:37,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:37,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:37,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:37,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:37,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:37,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937297383] [2022-11-20 11:09:37,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937297383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:37,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:37,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:09:37,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827096881] [2022-11-20 11:09:37,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:37,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:09:37,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:37,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:09:37,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:37,855 INFO L87 Difference]: Start difference. First operand 3419 states and 5310 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:37,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:37,996 INFO L93 Difference]: Finished difference Result 4081 states and 6350 transitions. [2022-11-20 11:09:37,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:09:37,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-20 11:09:37,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:38,009 INFO L225 Difference]: With dead ends: 4081 [2022-11-20 11:09:38,009 INFO L226 Difference]: Without dead ends: 3738 [2022-11-20 11:09:38,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:38,014 INFO L413 NwaCegarLoop]: 1687 mSDtfsCounter, 1524 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1789 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 [2022-11-20 11:09:38,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1524 Valid, 1789 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:09:38,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2022-11-20 11:09:38,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 3736. [2022-11-20 11:09:38,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3736 states, 3734 states have (on average 1.55382967327263) internal successors, (5802), 3735 states have internal predecessors, (5802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:38,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3736 states to 3736 states and 5802 transitions. [2022-11-20 11:09:38,198 INFO L78 Accepts]: Start accepts. Automaton has 3736 states and 5802 transitions. Word has length 94 [2022-11-20 11:09:38,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:38,198 INFO L495 AbstractCegarLoop]: Abstraction has 3736 states and 5802 transitions. [2022-11-20 11:09:38,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:38,199 INFO L276 IsEmpty]: Start isEmpty. Operand 3736 states and 5802 transitions. [2022-11-20 11:09:38,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 11:09:38,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:38,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:38,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:09:38,203 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:38,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:38,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1596549740, now seen corresponding path program 1 times [2022-11-20 11:09:38,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:38,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669477711] [2022-11-20 11:09:38,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:38,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:38,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:38,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:38,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669477711] [2022-11-20 11:09:38,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669477711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:38,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:38,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:09:38,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272462492] [2022-11-20 11:09:38,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:38,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:09:38,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:38,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:09:38,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:38,307 INFO L87 Difference]: Start difference. First operand 3736 states and 5802 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:38,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:38,542 INFO L93 Difference]: Finished difference Result 5008 states and 7784 transitions. [2022-11-20 11:09:38,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:09:38,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-20 11:09:38,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:38,568 INFO L225 Difference]: With dead ends: 5008 [2022-11-20 11:09:38,575 INFO L226 Difference]: Without dead ends: 4348 [2022-11-20 11:09:38,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:38,578 INFO L413 NwaCegarLoop]: 1675 mSDtfsCounter, 1520 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1785 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 [2022-11-20 11:09:38,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 1785 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:09:38,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4348 states. [2022-11-20 11:09:38,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4348 to 4346. [2022-11-20 11:09:38,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4346 states, 4344 states have (on average 1.5511049723756907) internal successors, (6738), 4345 states have internal predecessors, (6738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:38,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4346 states to 4346 states and 6738 transitions. [2022-11-20 11:09:38,945 INFO L78 Accepts]: Start accepts. Automaton has 4346 states and 6738 transitions. Word has length 94 [2022-11-20 11:09:38,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:38,945 INFO L495 AbstractCegarLoop]: Abstraction has 4346 states and 6738 transitions. [2022-11-20 11:09:38,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:38,946 INFO L276 IsEmpty]: Start isEmpty. Operand 4346 states and 6738 transitions. [2022-11-20 11:09:38,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 11:09:38,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:38,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:38,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:09:38,947 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:38,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:38,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1332693356, now seen corresponding path program 1 times [2022-11-20 11:09:38,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:38,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911079785] [2022-11-20 11:09:38,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:38,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:39,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:39,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:39,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911079785] [2022-11-20 11:09:39,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911079785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:39,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:39,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:09:39,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982911032] [2022-11-20 11:09:39,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:39,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:09:39,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:39,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:09:39,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:39,047 INFO L87 Difference]: Start difference. First operand 4346 states and 6738 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:39,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:39,519 INFO L93 Difference]: Finished difference Result 6790 states and 10508 transitions. [2022-11-20 11:09:39,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:09:39,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-20 11:09:39,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:39,531 INFO L225 Difference]: With dead ends: 6790 [2022-11-20 11:09:39,532 INFO L226 Difference]: Without dead ends: 5520 [2022-11-20 11:09:39,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:39,536 INFO L413 NwaCegarLoop]: 1673 mSDtfsCounter, 1518 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 1787 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 [2022-11-20 11:09:39,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 1787 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:09:39,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5520 states. [2022-11-20 11:09:40,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5520 to 5518. [2022-11-20 11:09:40,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5518 states, 5516 states have (on average 1.543509789702683) internal successors, (8514), 5517 states have internal predecessors, (8514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:40,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5518 states to 5518 states and 8514 transitions. [2022-11-20 11:09:40,173 INFO L78 Accepts]: Start accepts. Automaton has 5518 states and 8514 transitions. Word has length 94 [2022-11-20 11:09:40,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:40,175 INFO L495 AbstractCegarLoop]: Abstraction has 5518 states and 8514 transitions. [2022-11-20 11:09:40,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:40,176 INFO L276 IsEmpty]: Start isEmpty. Operand 5518 states and 8514 transitions. [2022-11-20 11:09:40,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 11:09:40,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:40,177 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:40,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:09:40,178 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:40,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:40,178 INFO L85 PathProgramCache]: Analyzing trace with hash -94431340, now seen corresponding path program 1 times [2022-11-20 11:09:40,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:40,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354765173] [2022-11-20 11:09:40,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:40,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:40,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:40,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:40,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354765173] [2022-11-20 11:09:40,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354765173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:40,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:40,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:09:40,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519647176] [2022-11-20 11:09:40,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:40,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:09:40,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:40,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:09:40,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:40,318 INFO L87 Difference]: Start difference. First operand 5518 states and 8514 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:41,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:41,225 INFO L93 Difference]: Finished difference Result 10210 states and 15668 transitions. [2022-11-20 11:09:41,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:09:41,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-20 11:09:41,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:41,243 INFO L225 Difference]: With dead ends: 10210 [2022-11-20 11:09:41,243 INFO L226 Difference]: Without dead ends: 7768 [2022-11-20 11:09:41,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:41,249 INFO L413 NwaCegarLoop]: 1671 mSDtfsCounter, 1516 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1789 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 [2022-11-20 11:09:41,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1516 Valid, 1789 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:09:41,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7768 states. [2022-11-20 11:09:42,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7768 to 7766. [2022-11-20 11:09:42,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7766 states, 7764 states have (on average 1.5293663060278206) internal successors, (11874), 7765 states have internal predecessors, (11874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:42,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7766 states to 7766 states and 11874 transitions. [2022-11-20 11:09:42,144 INFO L78 Accepts]: Start accepts. Automaton has 7766 states and 11874 transitions. Word has length 94 [2022-11-20 11:09:42,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:42,145 INFO L495 AbstractCegarLoop]: Abstraction has 7766 states and 11874 transitions. [2022-11-20 11:09:42,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:42,145 INFO L276 IsEmpty]: Start isEmpty. Operand 7766 states and 11874 transitions. [2022-11-20 11:09:42,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 11:09:42,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:42,147 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:42,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:09:42,147 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:42,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:42,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1985067156, now seen corresponding path program 1 times [2022-11-20 11:09:42,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:42,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125530203] [2022-11-20 11:09:42,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:42,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:42,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:42,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:42,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125530203] [2022-11-20 11:09:42,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125530203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:42,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:42,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:09:42,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125578703] [2022-11-20 11:09:42,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:42,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:09:42,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:42,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:09:42,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:42,236 INFO L87 Difference]: Start difference. First operand 7766 states and 11874 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:43,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:43,654 INFO L93 Difference]: Finished difference Result 16762 states and 25412 transitions. [2022-11-20 11:09:43,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:09:43,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-20 11:09:43,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:43,679 INFO L225 Difference]: With dead ends: 16762 [2022-11-20 11:09:43,680 INFO L226 Difference]: Without dead ends: 12072 [2022-11-20 11:09:43,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:43,688 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 1514 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1791 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 [2022-11-20 11:09:43,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1791 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:09:43,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12072 states. [2022-11-20 11:09:45,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12072 to 12070. [2022-11-20 11:09:45,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12070 states, 12068 states have (on average 1.508949287371561) internal successors, (18210), 12069 states have internal predecessors, (18210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:45,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12070 states to 12070 states and 18210 transitions. [2022-11-20 11:09:45,120 INFO L78 Accepts]: Start accepts. Automaton has 12070 states and 18210 transitions. Word has length 94 [2022-11-20 11:09:45,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:45,121 INFO L495 AbstractCegarLoop]: Abstraction has 12070 states and 18210 transitions. [2022-11-20 11:09:45,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:45,121 INFO L276 IsEmpty]: Start isEmpty. Operand 12070 states and 18210 transitions. [2022-11-20 11:09:45,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 11:09:45,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:45,123 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:45,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:09:45,123 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:45,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:45,124 INFO L85 PathProgramCache]: Analyzing trace with hash -528967276, now seen corresponding path program 1 times [2022-11-20 11:09:45,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:45,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942604174] [2022-11-20 11:09:45,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:45,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:45,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:45,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942604174] [2022-11-20 11:09:45,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942604174] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:45,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:45,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:09:45,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727496818] [2022-11-20 11:09:45,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:45,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:09:45,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:45,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:09:45,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:45,214 INFO L87 Difference]: Start difference. First operand 12070 states and 18210 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:47,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:47,589 INFO L93 Difference]: Finished difference Result 29290 states and 43748 transitions. [2022-11-20 11:09:47,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:09:47,590 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-20 11:09:47,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:47,638 INFO L225 Difference]: With dead ends: 29290 [2022-11-20 11:09:47,638 INFO L226 Difference]: Without dead ends: 20296 [2022-11-20 11:09:47,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:47,651 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 1512 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1793 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 [2022-11-20 11:09:47,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 1793 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:09:47,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20296 states. [2022-11-20 11:09:50,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20296 to 20294. [2022-11-20 11:09:50,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20294 states, 20292 states have (on average 1.484033116499113) internal successors, (30114), 20293 states have internal predecessors, (30114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:50,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20294 states to 20294 states and 30114 transitions. [2022-11-20 11:09:50,138 INFO L78 Accepts]: Start accepts. Automaton has 20294 states and 30114 transitions. Word has length 94 [2022-11-20 11:09:50,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:50,139 INFO L495 AbstractCegarLoop]: Abstraction has 20294 states and 30114 transitions. [2022-11-20 11:09:50,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:50,139 INFO L276 IsEmpty]: Start isEmpty. Operand 20294 states and 30114 transitions. [2022-11-20 11:09:50,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-20 11:09:50,143 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:50,144 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:50,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:09:50,144 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:50,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:50,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1759464300, now seen corresponding path program 1 times [2022-11-20 11:09:50,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:50,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077166508] [2022-11-20 11:09:50,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:50,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:50,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:09:50,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:50,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077166508] [2022-11-20 11:09:50,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077166508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:50,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:50,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:09:50,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443464866] [2022-11-20 11:09:50,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:50,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:09:50,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:50,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:09:50,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:50,228 INFO L87 Difference]: Start difference. First operand 20294 states and 30114 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:09:55,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:55,034 INFO L93 Difference]: Finished difference Result 53194 states and 78116 transitions. [2022-11-20 11:09:55,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:09:55,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2022-11-20 11:09:55,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:55,117 INFO L225 Difference]: With dead ends: 53194 [2022-11-20 11:09:55,118 INFO L226 Difference]: Without dead ends: 35976 [2022-11-20 11:09:55,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:09:55,137 INFO L413 NwaCegarLoop]: 1685 mSDtfsCounter, 1522 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1791 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 [2022-11-20 11:09:55,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1791 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:09:55,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35976 states. [2022-11-20 11:10:00,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35976 to 35974. [2022-11-20 11:10:00,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35974 states, 35972 states have (on average 1.456299343934171) internal successors, (52386), 35973 states have internal predecessors, (52386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:00,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35974 states to 35974 states and 52386 transitions. [2022-11-20 11:10:00,572 INFO L78 Accepts]: Start accepts. Automaton has 35974 states and 52386 transitions. Word has length 94 [2022-11-20 11:10:00,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:00,573 INFO L495 AbstractCegarLoop]: Abstraction has 35974 states and 52386 transitions. [2022-11-20 11:10:00,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:00,573 INFO L276 IsEmpty]: Start isEmpty. Operand 35974 states and 52386 transitions. [2022-11-20 11:10:00,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 11:10:00,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:00,576 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:00,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:10:00,576 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:00,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:00,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1572891956, now seen corresponding path program 1 times [2022-11-20 11:10:00,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:00,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457570238] [2022-11-20 11:10:00,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:00,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:00,946 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:10:00,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:00,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457570238] [2022-11-20 11:10:00,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457570238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:00,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:00,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:10:00,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572126341] [2022-11-20 11:10:00,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:00,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:10:00,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:00,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:10:00,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:10:00,949 INFO L87 Difference]: Start difference. First operand 35974 states and 52386 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:12,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:12,299 INFO L93 Difference]: Finished difference Result 42735 states and 62724 transitions. [2022-11-20 11:10:12,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:10:12,303 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 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 101 [2022-11-20 11:10:12,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:12,368 INFO L225 Difference]: With dead ends: 42735 [2022-11-20 11:10:12,368 INFO L226 Difference]: Without dead ends: 39729 [2022-11-20 11:10:12,380 INFO L412 NwaCegarLoop]: 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 [2022-11-20 11:10:12,380 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 2502 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4918 mSolverCounterSat, 804 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2502 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 5722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 804 IncrementalHoareTripleChecker+Valid, 4918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:12,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2502 Valid, 460 Invalid, 5722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [804 Valid, 4918 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-20 11:10:12,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39729 states. [2022-11-20 11:10:17,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39729 to 39729. [2022-11-20 11:10:17,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39729 states, 39727 states have (on average 1.4517079064616005) internal successors, (57672), 39728 states have internal predecessors, (57672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:17,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39729 states to 39729 states and 57672 transitions. [2022-11-20 11:10:17,201 INFO L78 Accepts]: Start accepts. Automaton has 39729 states and 57672 transitions. Word has length 101 [2022-11-20 11:10:17,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:17,201 INFO L495 AbstractCegarLoop]: Abstraction has 39729 states and 57672 transitions. [2022-11-20 11:10:17,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:10:17,202 INFO L276 IsEmpty]: Start isEmpty. Operand 39729 states and 57672 transitions. [2022-11-20 11:10:17,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-20 11:10:17,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:17,211 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:17,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:10:17,211 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:17,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:17,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1733023753, now seen corresponding path program 1 times [2022-11-20 11:10:17,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:17,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498313640] [2022-11-20 11:10:17,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:17,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:17,535 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:10:17,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:17,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498313640] [2022-11-20 11:10:17,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498313640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:17,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:17,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:10:17,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488424881] [2022-11-20 11:10:17,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:17,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:10:17,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:17,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:10:17,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:10:17,539 INFO L87 Difference]: Start difference. First operand 39729 states and 57672 transitions. Second operand has 10 states, 10 states have (on average 11.8) internal successors, (118), 10 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)