./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.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_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/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_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/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_72587614-19a9-4727-9098-5819ca0dd8fe/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 67b249d19bfb29e53a3ada528cfb44b497320fbfc38e7386ce56807633f41524 --- 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 11:11:16,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:11:16,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:11:16,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:11:16,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:11:16,737 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:11:16,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:11:16,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:11:16,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:11:16,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:11:16,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:11:16,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:11:16,758 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:11:16,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:11:16,763 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:11:16,765 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:11:16,767 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:11:16,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:11:16,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:11:16,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:11:16,773 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:11:16,774 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:11:16,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:11:16,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:11:16,780 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:11:16,780 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:11:16,780 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:11:16,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:11:16,782 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:11:16,783 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:11:16,783 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:11:16,784 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:11:16,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:11:16,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:11:16,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:11:16,797 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:11:16,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:11:16,798 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:11:16,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:11:16,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:11:16,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:11:16,803 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:11:16,830 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:11:16,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:11:16,831 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:11:16,831 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:11:16,832 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:11:16,832 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:11:16,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:11:16,833 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:11:16,833 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:11:16,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:11:16,834 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:11:16,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:11:16,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:11:16,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:11:16,835 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:11:16,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:11:16,835 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:11:16,835 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:11:16,835 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:11:16,836 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:11:16,836 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:11:16,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:11:16,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:11:16,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:11:16,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:11:16,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:11:16,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:11:16,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:11:16,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:11:16,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:11:16,838 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:11:16,838 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:11:16,839 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:11:16,839 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_72587614-19a9-4727-9098-5819ca0dd8fe/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67b249d19bfb29e53a3ada528cfb44b497320fbfc38e7386ce56807633f41524 [2022-11-20 11:11:17,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:11:17,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:11:17,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:11:17,155 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:11:17,155 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:11:17,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c [2022-11-20 11:11:20,412 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:11:20,744 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:11:20,744 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c [2022-11-20 11:11:20,768 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/data/89b0c3dd0/0f30298a6e3449bf9e3af21406940e81/FLAG2b531c96a [2022-11-20 11:11:20,810 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/data/89b0c3dd0/0f30298a6e3449bf9e3af21406940e81 [2022-11-20 11:11:20,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:11:20,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:11:20,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:11:20,822 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:11:20,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:11:20,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:11:20" (1/1) ... [2022-11-20 11:11:20,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bbda991 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:20, skipping insertion in model container [2022-11-20 11:11:20,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:11:20" (1/1) ... [2022-11-20 11:11:20,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:11:20,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:11:21,078 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_72587614-19a9-4727-9098-5819ca0dd8fe/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[913,926] [2022-11-20 11:11:21,152 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_72587614-19a9-4727-9098-5819ca0dd8fe/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[5977,5990] [2022-11-20 11:11:21,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:11:21,283 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:11:21,297 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_72587614-19a9-4727-9098-5819ca0dd8fe/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[913,926] [2022-11-20 11:11:21,324 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_72587614-19a9-4727-9098-5819ca0dd8fe/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-2.c[5977,5990] [2022-11-20 11:11:21,397 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:11:21,420 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:11:21,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:21 WrapperNode [2022-11-20 11:11:21,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:11:21,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:11:21,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:11:21,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:11:21,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:21" (1/1) ... [2022-11-20 11:11:21,445 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:21" (1/1) ... [2022-11-20 11:11:21,494 INFO L138 Inliner]: procedures = 70, calls = 81, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 997 [2022-11-20 11:11:21,495 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:11:21,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:11:21,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:11:21,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:11:21,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:21" (1/1) ... [2022-11-20 11:11:21,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:21" (1/1) ... [2022-11-20 11:11:21,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:21" (1/1) ... [2022-11-20 11:11:21,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:21" (1/1) ... [2022-11-20 11:11:21,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:21" (1/1) ... [2022-11-20 11:11:21,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:21" (1/1) ... [2022-11-20 11:11:21,612 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:21" (1/1) ... [2022-11-20 11:11:21,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:21" (1/1) ... [2022-11-20 11:11:21,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:11:21,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:11:21,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:11:21,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:11:21,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:21" (1/1) ... [2022-11-20 11:11:21,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:11:21,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:21,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:11:21,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:11:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:11:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-20 11:11:21,716 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-20 11:11:21,716 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2022-11-20 11:11:21,718 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2022-11-20 11:11:21,718 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-20 11:11:21,718 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-20 11:11:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-20 11:11:21,719 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-20 11:11:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-20 11:11:21,719 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-20 11:11:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-20 11:11:21,719 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-20 11:11:21,719 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-20 11:11:21,720 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-20 11:11:21,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:11:21,720 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-20 11:11:21,721 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-20 11:11:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:11:21,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:11:21,721 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-20 11:11:21,721 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-20 11:11:21,949 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:11:21,951 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:11:22,935 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:11:22,947 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:11:22,948 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-11-20 11:11:22,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:11:22 BoogieIcfgContainer [2022-11-20 11:11:22,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:11:22,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:11:22,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:11:22,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:11:22,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:11:20" (1/3) ... [2022-11-20 11:11:22,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1028b40a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:11:22, skipping insertion in model container [2022-11-20 11:11:22,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:11:21" (2/3) ... [2022-11-20 11:11:22,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1028b40a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:11:22, skipping insertion in model container [2022-11-20 11:11:22,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:11:22" (3/3) ... [2022-11-20 11:11:22,959 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.11.cil-2.c [2022-11-20 11:11:22,978 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:11:22,979 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 11:11:23,045 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:11:23,052 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;@2dbd92b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:11:23,055 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 11:11:23,064 INFO L276 IsEmpty]: Start isEmpty. Operand has 429 states, 386 states have (on average 1.645077720207254) internal successors, (635), 391 states have internal predecessors, (635), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-20 11:11:23,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-20 11:11:23,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:23,076 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] [2022-11-20 11:11:23,077 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:23,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:23,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1865263090, now seen corresponding path program 1 times [2022-11-20 11:11:23,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:23,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468964918] [2022-11-20 11:11:23,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:23,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:23,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:11:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:23,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-20 11:11:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:23,421 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 11:11:23,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:23,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468964918] [2022-11-20 11:11:23,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468964918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:23,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:23,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:11:23,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158370139] [2022-11-20 11:11:23,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:23,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:11:23,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:23,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:11:23,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:23,463 INFO L87 Difference]: Start difference. First operand has 429 states, 386 states have (on average 1.645077720207254) internal successors, (635), 391 states have internal predecessors, (635), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:11:24,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:24,216 INFO L93 Difference]: Finished difference Result 904 states and 1464 transitions. [2022-11-20 11:11:24,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:11:24,220 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-11-20 11:11:24,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:24,249 INFO L225 Difference]: With dead ends: 904 [2022-11-20 11:11:24,253 INFO L226 Difference]: Without dead ends: 489 [2022-11-20 11:11:24,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 11:11:24,269 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 884 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:24,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 808 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:11:24,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-11-20 11:11:24,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 483. [2022-11-20 11:11:24,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 435 states have (on average 1.5264367816091955) internal successors, (664), 439 states have internal predecessors, (664), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (39), 33 states have call predecessors, (39), 33 states have call successors, (39) [2022-11-20 11:11:24,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 738 transitions. [2022-11-20 11:11:24,399 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 738 transitions. Word has length 44 [2022-11-20 11:11:24,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:24,400 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 738 transitions. [2022-11-20 11:11:24,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:11:24,401 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 738 transitions. [2022-11-20 11:11:24,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 11:11:24,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:24,409 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] [2022-11-20 11:11:24,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:11:24,410 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:24,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:24,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1076469852, now seen corresponding path program 1 times [2022-11-20 11:11:24,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:24,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440611584] [2022-11-20 11:11:24,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:24,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:24,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:11:24,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:24,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 11:11:24,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:24,577 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 11:11:24,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:24,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440611584] [2022-11-20 11:11:24,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440611584] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:24,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:24,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:11:24,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715937900] [2022-11-20 11:11:24,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:24,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:11:24,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:24,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:11:24,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:24,581 INFO L87 Difference]: Start difference. First operand 483 states and 738 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:11:25,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:25,288 INFO L93 Difference]: Finished difference Result 731 states and 1078 transitions. [2022-11-20 11:11:25,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:11:25,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-11-20 11:11:25,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:25,293 INFO L225 Difference]: With dead ends: 731 [2022-11-20 11:11:25,293 INFO L226 Difference]: Without dead ends: 607 [2022-11-20 11:11:25,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 11:11:25,295 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 349 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:25,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 1115 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:11:25,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-11-20 11:11:25,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 550. [2022-11-20 11:11:25,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 496 states have (on average 1.5080645161290323) internal successors, (748), 500 states have internal predecessors, (748), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2022-11-20 11:11:25,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 828 transitions. [2022-11-20 11:11:25,332 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 828 transitions. Word has length 45 [2022-11-20 11:11:25,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:25,332 INFO L495 AbstractCegarLoop]: Abstraction has 550 states and 828 transitions. [2022-11-20 11:11:25,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:11:25,333 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 828 transitions. [2022-11-20 11:11:25,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 11:11:25,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:25,334 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] [2022-11-20 11:11:25,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:11:25,335 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:25,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:25,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1934139983, now seen corresponding path program 1 times [2022-11-20 11:11:25,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:25,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782138868] [2022-11-20 11:11:25,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:25,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:25,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:11:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:25,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-20 11:11:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:25,407 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 11:11:25,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:25,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782138868] [2022-11-20 11:11:25,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782138868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:25,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:25,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:11:25,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722744393] [2022-11-20 11:11:25,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:25,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:11:25,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:25,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:11:25,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:25,410 INFO L87 Difference]: Start difference. First operand 550 states and 828 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:11:25,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:25,941 INFO L93 Difference]: Finished difference Result 958 states and 1387 transitions. [2022-11-20 11:11:25,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:11:25,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2022-11-20 11:11:25,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:25,946 INFO L225 Difference]: With dead ends: 958 [2022-11-20 11:11:25,946 INFO L226 Difference]: Without dead ends: 767 [2022-11-20 11:11:25,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 11:11:25,949 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 893 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:25,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 808 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:11:25,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2022-11-20 11:11:26,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 715. [2022-11-20 11:11:26,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 642 states have (on average 1.4610591900311527) internal successors, (938), 649 states have internal predecessors, (938), 49 states have call successors, (49), 21 states have call predecessors, (49), 22 states have return successors, (59), 45 states have call predecessors, (59), 47 states have call successors, (59) [2022-11-20 11:11:26,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1046 transitions. [2022-11-20 11:11:26,016 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1046 transitions. Word has length 45 [2022-11-20 11:11:26,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:26,016 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 1046 transitions. [2022-11-20 11:11:26,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 11:11:26,017 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1046 transitions. [2022-11-20 11:11:26,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-20 11:11:26,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:26,019 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 11:11:26,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:11:26,019 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:26,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:26,020 INFO L85 PathProgramCache]: Analyzing trace with hash -850776738, now seen corresponding path program 1 times [2022-11-20 11:11:26,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:26,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740423941] [2022-11-20 11:11:26,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:26,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:26,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:11:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:26,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-20 11:11:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:26,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:11:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:26,106 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:11:26,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:26,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740423941] [2022-11-20 11:11:26,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740423941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:26,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:26,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:11:26,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188039592] [2022-11-20 11:11:26,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:26,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:11:26,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:26,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:11:26,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:26,109 INFO L87 Difference]: Start difference. First operand 715 states and 1046 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:11:26,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:26,793 INFO L93 Difference]: Finished difference Result 1299 states and 1831 transitions. [2022-11-20 11:11:26,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:11:26,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-11-20 11:11:26,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:26,803 INFO L225 Difference]: With dead ends: 1299 [2022-11-20 11:11:26,803 INFO L226 Difference]: Without dead ends: 943 [2022-11-20 11:11:26,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 11:11:26,816 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 333 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:26,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 1167 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:11:26,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2022-11-20 11:11:26,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 905. [2022-11-20 11:11:26,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 808 states have (on average 1.4084158415841583) internal successors, (1138), 817 states have internal predecessors, (1138), 63 states have call successors, (63), 29 states have call predecessors, (63), 32 states have return successors, (83), 59 states have call predecessors, (83), 61 states have call successors, (83) [2022-11-20 11:11:26,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1284 transitions. [2022-11-20 11:11:26,900 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1284 transitions. Word has length 62 [2022-11-20 11:11:26,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:26,902 INFO L495 AbstractCegarLoop]: Abstraction has 905 states and 1284 transitions. [2022-11-20 11:11:26,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:11:26,902 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1284 transitions. [2022-11-20 11:11:26,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-20 11:11:26,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:26,906 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 11:11:26,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:11:26,908 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:26,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:26,912 INFO L85 PathProgramCache]: Analyzing trace with hash 33645861, now seen corresponding path program 1 times [2022-11-20 11:11:26,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:26,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611439324] [2022-11-20 11:11:26,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:26,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:26,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:11:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:26,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-20 11:11:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:26,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:11:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:26,995 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-20 11:11:26,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:26,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611439324] [2022-11-20 11:11:26,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611439324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:26,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:26,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:11:26,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217670057] [2022-11-20 11:11:26,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:26,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:11:26,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:26,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:11:26,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:11:26,998 INFO L87 Difference]: Start difference. First operand 905 states and 1284 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:11:27,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:27,513 INFO L93 Difference]: Finished difference Result 1558 states and 2137 transitions. [2022-11-20 11:11:27,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 11:11:27,514 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2022-11-20 11:11:27,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:27,520 INFO L225 Difference]: With dead ends: 1558 [2022-11-20 11:11:27,520 INFO L226 Difference]: Without dead ends: 1104 [2022-11-20 11:11:27,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 11:11:27,525 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 880 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 806 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:27,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [905 Valid, 806 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:11:27,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2022-11-20 11:11:27,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 1049. [2022-11-20 11:11:27,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1049 states, 936 states have (on average 1.3771367521367521) internal successors, (1289), 947 states have internal predecessors, (1289), 71 states have call successors, (71), 35 states have call predecessors, (71), 40 states have return successors, (97), 67 states have call predecessors, (97), 69 states have call successors, (97) [2022-11-20 11:11:27,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1457 transitions. [2022-11-20 11:11:27,627 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1457 transitions. Word has length 67 [2022-11-20 11:11:27,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:27,628 INFO L495 AbstractCegarLoop]: Abstraction has 1049 states and 1457 transitions. [2022-11-20 11:11:27,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 11:11:27,628 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1457 transitions. [2022-11-20 11:11:27,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-20 11:11:27,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:27,631 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 11:11:27,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:11:27,631 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:27,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:27,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2088486643, now seen corresponding path program 1 times [2022-11-20 11:11:27,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:27,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154612568] [2022-11-20 11:11:27,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:27,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:27,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:11:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:27,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 11:11:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:27,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:11:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:11:27,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:27,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154612568] [2022-11-20 11:11:27,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154612568] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:27,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240851090] [2022-11-20 11:11:27,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:27,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:27,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:27,811 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:27,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:11:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:27,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:11:27,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:28,128 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:28,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:28,196 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:11:28,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240851090] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:28,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:28,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2022-11-20 11:11:28,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807449430] [2022-11-20 11:11:28,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:28,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:11:28,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:28,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:11:28,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:11:28,198 INFO L87 Difference]: Start difference. First operand 1049 states and 1457 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:11:28,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:28,468 INFO L93 Difference]: Finished difference Result 1105 states and 1525 transitions. [2022-11-20 11:11:28,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:11:28,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2022-11-20 11:11:28,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:28,475 INFO L225 Difference]: With dead ends: 1105 [2022-11-20 11:11:28,475 INFO L226 Difference]: Without dead ends: 1102 [2022-11-20 11:11:28,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:11:28,478 INFO L413 NwaCegarLoop]: 672 mSDtfsCounter, 1181 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:28,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 739 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:11:28,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2022-11-20 11:11:28,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1048. [2022-11-20 11:11:28,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 936 states have (on average 1.375) internal successors, (1287), 946 states have internal predecessors, (1287), 70 states have call successors, (70), 35 states have call predecessors, (70), 40 states have return successors, (97), 67 states have call predecessors, (97), 69 states have call successors, (97) [2022-11-20 11:11:28,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1454 transitions. [2022-11-20 11:11:28,578 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1454 transitions. Word has length 68 [2022-11-20 11:11:28,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:28,581 INFO L495 AbstractCegarLoop]: Abstraction has 1048 states and 1454 transitions. [2022-11-20 11:11:28,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-20 11:11:28,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1454 transitions. [2022-11-20 11:11:28,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-20 11:11:28,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:28,584 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 11:11:28,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:28,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:28,790 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:28,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:28,790 INFO L85 PathProgramCache]: Analyzing trace with hash -319896280, now seen corresponding path program 1 times [2022-11-20 11:11:28,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:28,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66483414] [2022-11-20 11:11:28,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:28,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:28,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:11:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:28,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 11:11:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:28,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:11:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:28,949 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:11:28,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:28,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66483414] [2022-11-20 11:11:28,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66483414] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:28,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941797610] [2022-11-20 11:11:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:28,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:28,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:28,960 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:28,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:11:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:29,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:11:29,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:29,433 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:11:29,434 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:29,524 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:11:29,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941797610] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:29,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 11:11:29,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2022-11-20 11:11:29,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975194144] [2022-11-20 11:11:29,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:29,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:11:29,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:29,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:11:29,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:11:29,526 INFO L87 Difference]: Start difference. First operand 1048 states and 1454 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-11-20 11:11:31,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:31,864 INFO L93 Difference]: Finished difference Result 2748 states and 3674 transitions. [2022-11-20 11:11:31,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-20 11:11:31,866 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2022-11-20 11:11:31,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:31,875 INFO L225 Difference]: With dead ends: 2748 [2022-11-20 11:11:31,875 INFO L226 Difference]: Without dead ends: 2204 [2022-11-20 11:11:31,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 11:11:31,879 INFO L413 NwaCegarLoop]: 518 mSDtfsCounter, 1237 mSDsluCounter, 3242 mSDsCounter, 0 mSdLazyCounter, 2451 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 3760 SdHoareTripleChecker+Invalid, 2498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:31,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1269 Valid, 3760 Invalid, 2498 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 2451 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 11:11:31,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2022-11-20 11:11:31,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 1437. [2022-11-20 11:11:31,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1437 states, 1286 states have (on average 1.3382581648522551) internal successors, (1721), 1304 states have internal predecessors, (1721), 90 states have call successors, (90), 49 states have call predecessors, (90), 59 states have return successors, (131), 84 states have call predecessors, (131), 89 states have call successors, (131) [2022-11-20 11:11:32,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1437 states to 1437 states and 1942 transitions. [2022-11-20 11:11:32,002 INFO L78 Accepts]: Start accepts. Automaton has 1437 states and 1942 transitions. Word has length 69 [2022-11-20 11:11:32,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:32,003 INFO L495 AbstractCegarLoop]: Abstraction has 1437 states and 1942 transitions. [2022-11-20 11:11:32,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2022-11-20 11:11:32,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1437 states and 1942 transitions. [2022-11-20 11:11:32,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-20 11:11:32,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:32,007 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-20 11:11:32,015 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:32,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-20 11:11:32,213 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:32,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:32,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1470276952, now seen corresponding path program 1 times [2022-11-20 11:11:32,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:32,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226067683] [2022-11-20 11:11:32,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:32,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:32,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:11:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:32,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 11:11:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:32,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-20 11:11:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:32,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-20 11:11:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:32,375 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-20 11:11:32,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:32,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226067683] [2022-11-20 11:11:32,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226067683] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:32,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2091084818] [2022-11-20 11:11:32,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:32,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:32,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:32,377 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:32,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:11:32,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:32,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:11:32,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:32,573 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-20 11:11:32,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:11:32,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2091084818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:32,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:11:32,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-20 11:11:32,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18440894] [2022-11-20 11:11:32,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:32,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:11:32,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:32,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:11:32,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:11:32,577 INFO L87 Difference]: Start difference. First operand 1437 states and 1942 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 11:11:32,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:32,720 INFO L93 Difference]: Finished difference Result 2160 states and 2880 transitions. [2022-11-20 11:11:32,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:11:32,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2022-11-20 11:11:32,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:32,727 INFO L225 Difference]: With dead ends: 2160 [2022-11-20 11:11:32,727 INFO L226 Difference]: Without dead ends: 1315 [2022-11-20 11:11:32,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:11:32,730 INFO L413 NwaCegarLoop]: 678 mSDtfsCounter, 607 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:32,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [607 Valid, 753 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:11:32,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1315 states. [2022-11-20 11:11:32,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1315 to 1300. [2022-11-20 11:11:32,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1165 states have (on average 1.3416309012875536) internal successors, (1563), 1182 states have internal predecessors, (1563), 82 states have call successors, (82), 43 states have call predecessors, (82), 51 states have return successors, (117), 75 states have call predecessors, (117), 81 states have call successors, (117) [2022-11-20 11:11:32,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1762 transitions. [2022-11-20 11:11:32,832 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1762 transitions. Word has length 88 [2022-11-20 11:11:32,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:32,832 INFO L495 AbstractCegarLoop]: Abstraction has 1300 states and 1762 transitions. [2022-11-20 11:11:32,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-20 11:11:32,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1762 transitions. [2022-11-20 11:11:32,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-20 11:11:32,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:32,842 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 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] [2022-11-20 11:11:32,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:33,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 11:11:33,047 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:33,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:33,048 INFO L85 PathProgramCache]: Analyzing trace with hash 852635580, now seen corresponding path program 1 times [2022-11-20 11:11:33,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:33,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872283824] [2022-11-20 11:11:33,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:33,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:33,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:11:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-20 11:11:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 11:11:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-20 11:11:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 11:11:33,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,185 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-20 11:11:33,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:33,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872283824] [2022-11-20 11:11:33,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872283824] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:33,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292382288] [2022-11-20 11:11:33,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:33,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:33,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:33,188 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:33,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:11:33,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-20 11:11:33,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:33,372 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 11:11:33,373 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:11:33,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292382288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:33,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:11:33,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-20 11:11:33,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005376300] [2022-11-20 11:11:33,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:33,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:11:33,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:33,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:11:33,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:11:33,375 INFO L87 Difference]: Start difference. First operand 1300 states and 1762 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-20 11:11:33,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:33,458 INFO L93 Difference]: Finished difference Result 1679 states and 2230 transitions. [2022-11-20 11:11:33,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:11:33,458 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2022-11-20 11:11:33,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:33,461 INFO L225 Difference]: With dead ends: 1679 [2022-11-20 11:11:33,461 INFO L226 Difference]: Without dead ends: 353 [2022-11-20 11:11:33,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:11:33,464 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 62 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:33,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1314 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:11:33,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-11-20 11:11:33,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2022-11-20 11:11:33,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 321 states have (on average 1.573208722741433) internal successors, (505), 322 states have internal predecessors, (505), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-20 11:11:33,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 555 transitions. [2022-11-20 11:11:33,487 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 555 transitions. Word has length 103 [2022-11-20 11:11:33,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:33,488 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 555 transitions. [2022-11-20 11:11:33,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-20 11:11:33,488 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 555 transitions. [2022-11-20 11:11:33,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 11:11:33,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:33,490 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:11:33,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-20 11:11:33,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_72587614-19a9-4727-9098-5819ca0dd8fe/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:33,696 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:33,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:33,696 INFO L85 PathProgramCache]: Analyzing trace with hash -971993518, now seen corresponding path program 1 times [2022-11-20 11:11:33,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:33,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311218637] [2022-11-20 11:11:33,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:33,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:33,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:11:33,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:11:33,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:11:33,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:11:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-20 11:11:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:33,882 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 11:11:33,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:33,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311218637] [2022-11-20 11:11:33,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311218637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:33,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:33,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:11:33,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73145062] [2022-11-20 11:11:33,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:33,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:11:33,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:33,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:11:33,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:11:33,885 INFO L87 Difference]: Start difference. First operand 353 states and 555 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:11:35,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:35,984 INFO L93 Difference]: Finished difference Result 827 states and 1321 transitions. [2022-11-20 11:11:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:11:35,985 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-20 11:11:35,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:35,987 INFO L225 Difference]: With dead ends: 827 [2022-11-20 11:11:35,987 INFO L226 Difference]: Without dead ends: 484 [2022-11-20 11:11:35,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:11:35,989 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 956 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:35,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [979 Valid, 688 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 11:11:35,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-11-20 11:11:36,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 353. [2022-11-20 11:11:36,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 321 states have (on average 1.5700934579439252) internal successors, (504), 322 states have internal predecessors, (504), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-20 11:11:36,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 554 transitions. [2022-11-20 11:11:36,038 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 554 transitions. Word has length 167 [2022-11-20 11:11:36,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:36,039 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 554 transitions. [2022-11-20 11:11:36,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:11:36,039 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 554 transitions. [2022-11-20 11:11:36,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 11:11:36,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:36,041 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:11:36,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:11:36,042 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:36,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:36,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1952948332, now seen corresponding path program 1 times [2022-11-20 11:11:36,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:36,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508005571] [2022-11-20 11:11:36,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:36,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:36,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:11:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:36,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:11:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:36,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:11:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:36,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:11:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:36,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-20 11:11:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:36,218 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 11:11:36,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:36,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508005571] [2022-11-20 11:11:36,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508005571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:36,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:36,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:11:36,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275854882] [2022-11-20 11:11:36,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:36,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:11:36,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:36,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:11:36,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:11:36,220 INFO L87 Difference]: Start difference. First operand 353 states and 554 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:11:38,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:38,379 INFO L93 Difference]: Finished difference Result 819 states and 1304 transitions. [2022-11-20 11:11:38,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:11:38,380 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-20 11:11:38,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:38,382 INFO L225 Difference]: With dead ends: 819 [2022-11-20 11:11:38,383 INFO L226 Difference]: Without dead ends: 484 [2022-11-20 11:11:38,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:11:38,385 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 947 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 1012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:38,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 686 Invalid, 1012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 11:11:38,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-11-20 11:11:38,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 353. [2022-11-20 11:11:38,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 321 states have (on average 1.5669781931464175) internal successors, (503), 322 states have internal predecessors, (503), 25 states have call successors, (25), 6 states have call predecessors, (25), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-20 11:11:38,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 553 transitions. [2022-11-20 11:11:38,436 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 553 transitions. Word has length 167 [2022-11-20 11:11:38,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:38,437 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 553 transitions. [2022-11-20 11:11:38,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:11:38,437 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 553 transitions. [2022-11-20 11:11:38,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 11:11:38,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:38,439 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:11:38,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:11:38,440 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:38,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:38,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1688300842, now seen corresponding path program 1 times [2022-11-20 11:11:38,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:38,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683577930] [2022-11-20 11:11:38,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:38,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:38,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:11:38,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:38,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:11:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:38,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:11:38,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:38,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:11:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:38,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-20 11:11:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:38,677 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 11:11:38,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:38,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683577930] [2022-11-20 11:11:38,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683577930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:38,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:38,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:11:38,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474815605] [2022-11-20 11:11:38,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:38,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:11:38,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:38,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:11:38,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:11:38,679 INFO L87 Difference]: Start difference. First operand 353 states and 553 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:11:42,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:42,303 INFO L93 Difference]: Finished difference Result 1297 states and 2080 transitions. [2022-11-20 11:11:42,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:11:42,304 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-20 11:11:42,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:42,309 INFO L225 Difference]: With dead ends: 1297 [2022-11-20 11:11:42,309 INFO L226 Difference]: Without dead ends: 964 [2022-11-20 11:11:42,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:11:42,311 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 1445 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 2200 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1463 SdHoareTripleChecker+Valid, 1208 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:42,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1463 Valid, 1208 Invalid, 2304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2200 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-20 11:11:42,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2022-11-20 11:11:42,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 703. [2022-11-20 11:11:42,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 644 states have (on average 1.5807453416149069) internal successors, (1018), 646 states have internal predecessors, (1018), 45 states have call successors, (45), 12 states have call predecessors, (45), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2022-11-20 11:11:42,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1111 transitions. [2022-11-20 11:11:42,497 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1111 transitions. Word has length 167 [2022-11-20 11:11:42,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:42,497 INFO L495 AbstractCegarLoop]: Abstraction has 703 states and 1111 transitions. [2022-11-20 11:11:42,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:11:42,498 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1111 transitions. [2022-11-20 11:11:42,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 11:11:42,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:42,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:11:42,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:11:42,507 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:42,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:42,508 INFO L85 PathProgramCache]: Analyzing trace with hash -688714662, now seen corresponding path program 1 times [2022-11-20 11:11:42,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:42,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210585544] [2022-11-20 11:11:42,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:42,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:42,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:11:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:42,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:11:42,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:42,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:11:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:42,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:11:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:42,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-20 11:11:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:42,877 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 11:11:42,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:42,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210585544] [2022-11-20 11:11:42,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210585544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:42,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:42,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:11:42,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562670704] [2022-11-20 11:11:42,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:42,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:11:42,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:42,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:11:42,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:11:42,880 INFO L87 Difference]: Start difference. First operand 703 states and 1111 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:11:47,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:47,631 INFO L93 Difference]: Finished difference Result 2145 states and 3445 transitions. [2022-11-20 11:11:47,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:11:47,636 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-20 11:11:47,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:47,644 INFO L225 Difference]: With dead ends: 2145 [2022-11-20 11:11:47,644 INFO L226 Difference]: Without dead ends: 1462 [2022-11-20 11:11:47,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:11:47,647 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 1484 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 3319 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1502 SdHoareTripleChecker+Valid, 2260 SdHoareTripleChecker+Invalid, 3380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:47,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1502 Valid, 2260 Invalid, 3380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 3319 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-20 11:11:47,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2022-11-20 11:11:47,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1028. [2022-11-20 11:11:47,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 942 states have (on average 1.5743099787685775) internal successors, (1483), 945 states have internal predecessors, (1483), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-11-20 11:11:47,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1618 transitions. [2022-11-20 11:11:47,816 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1618 transitions. Word has length 167 [2022-11-20 11:11:47,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:47,816 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1618 transitions. [2022-11-20 11:11:47,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:11:47,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1618 transitions. [2022-11-20 11:11:47,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 11:11:47,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:47,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:11:47,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:11:47,820 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:47,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:47,820 INFO L85 PathProgramCache]: Analyzing trace with hash -350427112, now seen corresponding path program 1 times [2022-11-20 11:11:47,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:47,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245292895] [2022-11-20 11:11:47,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:47,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:47,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:47,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:11:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:48,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:11:48,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:48,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:11:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:48,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:11:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:48,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-20 11:11:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:48,122 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 11:11:48,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:48,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245292895] [2022-11-20 11:11:48,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245292895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:48,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:48,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:11:48,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773528594] [2022-11-20 11:11:48,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:48,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:11:48,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:48,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:11:48,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:11:48,125 INFO L87 Difference]: Start difference. First operand 1028 states and 1618 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:11:50,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:50,756 INFO L93 Difference]: Finished difference Result 2486 states and 3990 transitions. [2022-11-20 11:11:50,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:11:50,757 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-20 11:11:50,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:50,764 INFO L225 Difference]: With dead ends: 2486 [2022-11-20 11:11:50,764 INFO L226 Difference]: Without dead ends: 1478 [2022-11-20 11:11:50,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:11:50,769 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 1137 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1156 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:50,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1156 Valid, 1145 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1584 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-20 11:11:50,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1478 states. [2022-11-20 11:11:50,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1478 to 1028. [2022-11-20 11:11:50,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 942 states have (on average 1.5711252653927814) internal successors, (1480), 945 states have internal predecessors, (1480), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-11-20 11:11:50,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1615 transitions. [2022-11-20 11:11:50,975 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1615 transitions. Word has length 167 [2022-11-20 11:11:50,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:50,975 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1615 transitions. [2022-11-20 11:11:50,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:11:50,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1615 transitions. [2022-11-20 11:11:50,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 11:11:50,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:50,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:11:50,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:11:50,979 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:50,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:50,979 INFO L85 PathProgramCache]: Analyzing trace with hash -890856618, now seen corresponding path program 1 times [2022-11-20 11:11:50,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:50,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832776572] [2022-11-20 11:11:50,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:50,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:50,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:51,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:11:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:51,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:11:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:51,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:11:51,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:51,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:11:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:51,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-20 11:11:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:51,258 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 11:11:51,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:51,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832776572] [2022-11-20 11:11:51,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832776572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:51,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:51,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:11:51,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078566269] [2022-11-20 11:11:51,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:51,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:11:51,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:51,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:11:51,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:11:51,261 INFO L87 Difference]: Start difference. First operand 1028 states and 1615 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:11:53,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:53,606 INFO L93 Difference]: Finished difference Result 2482 states and 3973 transitions. [2022-11-20 11:11:53,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:11:53,607 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-20 11:11:53,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:53,613 INFO L225 Difference]: With dead ends: 2482 [2022-11-20 11:11:53,614 INFO L226 Difference]: Without dead ends: 1474 [2022-11-20 11:11:53,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:11:53,618 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1207 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 1626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:53,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 965 Invalid, 1626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 11:11:53,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2022-11-20 11:11:53,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1028. [2022-11-20 11:11:53,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 942 states have (on average 1.5679405520169851) internal successors, (1477), 945 states have internal predecessors, (1477), 65 states have call successors, (65), 18 states have call predecessors, (65), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2022-11-20 11:11:53,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1612 transitions. [2022-11-20 11:11:53,819 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1612 transitions. Word has length 167 [2022-11-20 11:11:53,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:53,819 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1612 transitions. [2022-11-20 11:11:53,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:11:53,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1612 transitions. [2022-11-20 11:11:53,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 11:11:53,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:53,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:11:53,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:11:53,823 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:53,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:53,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1046837160, now seen corresponding path program 1 times [2022-11-20 11:11:53,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:53,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884154540] [2022-11-20 11:11:53,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:53,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:53,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:53,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:11:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:54,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:11:54,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:54,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:11:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:54,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:11:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:54,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-20 11:11:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:54,129 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 11:11:54,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:54,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884154540] [2022-11-20 11:11:54,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884154540] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:54,129 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:54,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:11:54,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737373327] [2022-11-20 11:11:54,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:54,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:11:54,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:54,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:11:54,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:11:54,132 INFO L87 Difference]: Start difference. First operand 1028 states and 1612 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:11:59,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:59,055 INFO L93 Difference]: Finished difference Result 3386 states and 5396 transitions. [2022-11-20 11:11:59,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:11:59,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-20 11:11:59,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:59,066 INFO L225 Difference]: With dead ends: 3386 [2022-11-20 11:11:59,066 INFO L226 Difference]: Without dead ends: 2378 [2022-11-20 11:11:59,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:11:59,073 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1464 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 3248 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 2258 SdHoareTripleChecker+Invalid, 3311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:59,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 2258 Invalid, 3311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3248 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-20 11:11:59,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2378 states. [2022-11-20 11:11:59,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2378 to 1688. [2022-11-20 11:11:59,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1548 states have (on average 1.562015503875969) internal successors, (2418), 1553 states have internal predecessors, (2418), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2022-11-20 11:11:59,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2641 transitions. [2022-11-20 11:11:59,437 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2641 transitions. Word has length 167 [2022-11-20 11:11:59,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:59,438 INFO L495 AbstractCegarLoop]: Abstraction has 1688 states and 2641 transitions. [2022-11-20 11:11:59,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:11:59,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2641 transitions. [2022-11-20 11:11:59,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 11:11:59,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:59,441 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:11:59,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:11:59,442 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:59,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:59,443 INFO L85 PathProgramCache]: Analyzing trace with hash -636226794, now seen corresponding path program 1 times [2022-11-20 11:11:59,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:59,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618400682] [2022-11-20 11:11:59,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:59,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:59,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:11:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:59,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:11:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:59,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:11:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:59,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:11:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:59,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-20 11:11:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:11:59,727 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 11:11:59,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:59,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618400682] [2022-11-20 11:11:59,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618400682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:11:59,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:11:59,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:11:59,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387700801] [2022-11-20 11:11:59,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:11:59,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:11:59,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:59,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:11:59,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:11:59,731 INFO L87 Difference]: Start difference. First operand 1688 states and 2641 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:12:02,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:02,398 INFO L93 Difference]: Finished difference Result 4034 states and 6414 transitions. [2022-11-20 11:12:02,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:12:02,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-20 11:12:02,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:02,409 INFO L225 Difference]: With dead ends: 4034 [2022-11-20 11:12:02,409 INFO L226 Difference]: Without dead ends: 2366 [2022-11-20 11:12:02,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:12:02,415 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1052 mSDsluCounter, 868 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1146 SdHoareTripleChecker+Invalid, 1733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:02,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1071 Valid, 1146 Invalid, 1733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-20 11:12:02,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2022-11-20 11:12:02,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 1688. [2022-11-20 11:12:02,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1548 states have (on average 1.5587855297157622) internal successors, (2413), 1553 states have internal predecessors, (2413), 105 states have call successors, (105), 30 states have call predecessors, (105), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2022-11-20 11:12:02,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2636 transitions. [2022-11-20 11:12:02,812 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2636 transitions. Word has length 167 [2022-11-20 11:12:02,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:02,812 INFO L495 AbstractCegarLoop]: Abstraction has 1688 states and 2636 transitions. [2022-11-20 11:12:02,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:12:02,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2636 transitions. [2022-11-20 11:12:02,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 11:12:02,815 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:02,816 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:12:02,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:12:02,816 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:12:02,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:02,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1870870680, now seen corresponding path program 1 times [2022-11-20 11:12:02,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:02,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407311152] [2022-11-20 11:12:02,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:02,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:02,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:02,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:12:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:02,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:12:03,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:03,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:12:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:03,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:12:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:03,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-20 11:12:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:03,107 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 11:12:03,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:03,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407311152] [2022-11-20 11:12:03,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407311152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:03,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:03,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:12:03,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124965770] [2022-11-20 11:12:03,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:03,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:12:03,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:03,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:12:03,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:12:03,110 INFO L87 Difference]: Start difference. First operand 1688 states and 2636 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:12:08,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:08,329 INFO L93 Difference]: Finished difference Result 5790 states and 9161 transitions. [2022-11-20 11:12:08,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:12:08,330 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-20 11:12:08,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:08,346 INFO L225 Difference]: With dead ends: 5790 [2022-11-20 11:12:08,347 INFO L226 Difference]: Without dead ends: 4122 [2022-11-20 11:12:08,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:12:08,354 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1456 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 3210 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 2258 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:08,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 2258 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3210 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-20 11:12:08,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4122 states. [2022-11-20 11:12:08,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4122 to 3010. [2022-11-20 11:12:08,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 2762 states have (on average 1.552860246198407) internal successors, (4289), 2771 states have internal predecessors, (4289), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2022-11-20 11:12:08,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 4694 transitions. [2022-11-20 11:12:08,987 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 4694 transitions. Word has length 167 [2022-11-20 11:12:08,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:08,988 INFO L495 AbstractCegarLoop]: Abstraction has 3010 states and 4694 transitions. [2022-11-20 11:12:08,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:12:08,988 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 4694 transitions. [2022-11-20 11:12:08,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 11:12:08,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:08,992 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:12:08,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:12:08,993 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:12:08,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:08,994 INFO L85 PathProgramCache]: Analyzing trace with hash -265012522, now seen corresponding path program 1 times [2022-11-20 11:12:08,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:08,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80598391] [2022-11-20 11:12:08,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:08,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:09,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:12:09,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:09,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:12:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:09,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:12:09,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:09,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:12:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:09,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-20 11:12:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:09,266 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 11:12:09,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:09,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80598391] [2022-11-20 11:12:09,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80598391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:09,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:09,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:12:09,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487000826] [2022-11-20 11:12:09,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:09,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:12:09,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:09,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:12:09,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:12:09,271 INFO L87 Difference]: Start difference. First operand 3010 states and 4694 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:12:12,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:12,081 INFO L93 Difference]: Finished difference Result 7130 states and 11281 transitions. [2022-11-20 11:12:12,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:12:12,082 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-20 11:12:12,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:12,100 INFO L225 Difference]: With dead ends: 7130 [2022-11-20 11:12:12,100 INFO L226 Difference]: Without dead ends: 4140 [2022-11-20 11:12:12,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:12:12,110 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1205 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 1493 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 1582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:12,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1224 Valid, 965 Invalid, 1582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1493 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 11:12:12,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4140 states. [2022-11-20 11:12:12,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4140 to 3010. [2022-11-20 11:12:12,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3010 states, 2762 states have (on average 1.549601737871108) internal successors, (4280), 2771 states have internal predecessors, (4280), 185 states have call successors, (185), 54 states have call predecessors, (185), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2022-11-20 11:12:12,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3010 states to 3010 states and 4685 transitions. [2022-11-20 11:12:12,650 INFO L78 Accepts]: Start accepts. Automaton has 3010 states and 4685 transitions. Word has length 167 [2022-11-20 11:12:12,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:12,651 INFO L495 AbstractCegarLoop]: Abstraction has 3010 states and 4685 transitions. [2022-11-20 11:12:12,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:12:12,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3010 states and 4685 transitions. [2022-11-20 11:12:12,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 11:12:12,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:12,659 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:12:12,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 11:12:12,660 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:12:12,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:12,660 INFO L85 PathProgramCache]: Analyzing trace with hash -195364648, now seen corresponding path program 1 times [2022-11-20 11:12:12,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:12,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007108511] [2022-11-20 11:12:12,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:12,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:12,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:12:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:12,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:12:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:12,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:12:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:12,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:12:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:12,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-20 11:12:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:12,939 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 11:12:12,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:12,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007108511] [2022-11-20 11:12:12,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007108511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:12,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:12,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:12:12,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141984196] [2022-11-20 11:12:12,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:12,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:12:12,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:12,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:12:12,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:12:12,942 INFO L87 Difference]: Start difference. First operand 3010 states and 4685 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:12:19,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:19,133 INFO L93 Difference]: Finished difference Result 10596 states and 16685 transitions. [2022-11-20 11:12:19,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:12:19,134 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-20 11:12:19,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:19,162 INFO L225 Difference]: With dead ends: 10596 [2022-11-20 11:12:19,163 INFO L226 Difference]: Without dead ends: 7606 [2022-11-20 11:12:19,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:12:19,174 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1454 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 3167 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 2258 SdHoareTripleChecker+Invalid, 3230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:19,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 2258 Invalid, 3230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3167 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-20 11:12:19,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7606 states. [2022-11-20 11:12:20,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7606 to 5668. [2022-11-20 11:12:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5668 states, 5204 states have (on average 1.5449654112221367) internal successors, (8040), 5221 states have internal predecessors, (8040), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-11-20 11:12:20,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5668 states to 5668 states and 8827 transitions. [2022-11-20 11:12:20,114 INFO L78 Accepts]: Start accepts. Automaton has 5668 states and 8827 transitions. Word has length 167 [2022-11-20 11:12:20,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:20,114 INFO L495 AbstractCegarLoop]: Abstraction has 5668 states and 8827 transitions. [2022-11-20 11:12:20,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:12:20,114 INFO L276 IsEmpty]: Start isEmpty. Operand 5668 states and 8827 transitions. [2022-11-20 11:12:20,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 11:12:20,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:20,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:12:20,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 11:12:20,118 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:12:20,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:20,119 INFO L85 PathProgramCache]: Analyzing trace with hash 222524054, now seen corresponding path program 1 times [2022-11-20 11:12:20,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:20,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46608666] [2022-11-20 11:12:20,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:20,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:20,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:20,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:12:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:20,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:12:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:20,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:12:20,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:20,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:12:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:20,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-20 11:12:20,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:20,401 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 11:12:20,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:20,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46608666] [2022-11-20 11:12:20,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46608666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:20,402 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:20,402 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:12:20,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454032916] [2022-11-20 11:12:20,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:20,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:12:20,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:20,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:12:20,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:12:20,404 INFO L87 Difference]: Start difference. First operand 5668 states and 8827 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:12:23,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:23,831 INFO L93 Difference]: Finished difference Result 13304 states and 20996 transitions. [2022-11-20 11:12:23,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:12:23,831 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-20 11:12:23,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:23,862 INFO L225 Difference]: With dead ends: 13304 [2022-11-20 11:12:23,862 INFO L226 Difference]: Without dead ends: 7656 [2022-11-20 11:12:23,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:12:23,879 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 1258 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:23,880 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 964 Invalid, 1497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 11:12:23,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7656 states. [2022-11-20 11:12:25,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7656 to 5668. [2022-11-20 11:12:25,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5668 states, 5204 states have (on average 1.5416986933128363) internal successors, (8023), 5221 states have internal predecessors, (8023), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-11-20 11:12:25,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5668 states to 5668 states and 8810 transitions. [2022-11-20 11:12:25,027 INFO L78 Accepts]: Start accepts. Automaton has 5668 states and 8810 transitions. Word has length 167 [2022-11-20 11:12:25,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:25,027 INFO L495 AbstractCegarLoop]: Abstraction has 5668 states and 8810 transitions. [2022-11-20 11:12:25,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:12:25,028 INFO L276 IsEmpty]: Start isEmpty. Operand 5668 states and 8810 transitions. [2022-11-20 11:12:25,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 11:12:25,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:25,032 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:12:25,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 11:12:25,033 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:12:25,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:25,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1394916396, now seen corresponding path program 1 times [2022-11-20 11:12:25,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:25,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169080952] [2022-11-20 11:12:25,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:25,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:25,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:25,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:12:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:25,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:12:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:25,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:12:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:25,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:12:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:25,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-20 11:12:25,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:25,390 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 11:12:25,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:25,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169080952] [2022-11-20 11:12:25,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169080952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:25,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:25,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:12:25,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65101339] [2022-11-20 11:12:25,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:25,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:12:25,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:25,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:12:25,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:12:25,396 INFO L87 Difference]: Start difference. First operand 5668 states and 8810 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:12:29,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:29,321 INFO L93 Difference]: Finished difference Result 13286 states and 20909 transitions. [2022-11-20 11:12:29,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:12:29,327 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-20 11:12:29,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:29,354 INFO L225 Difference]: With dead ends: 13286 [2022-11-20 11:12:29,354 INFO L226 Difference]: Without dead ends: 7638 [2022-11-20 11:12:29,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:12:29,369 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 1050 mSDsluCounter, 866 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 1656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:29,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 1144 Invalid, 1656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-20 11:12:29,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7638 states. [2022-11-20 11:12:30,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7638 to 5668. [2022-11-20 11:12:30,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5668 states, 5204 states have (on average 1.5384319754035358) internal successors, (8006), 5221 states have internal predecessors, (8006), 345 states have call successors, (345), 102 states have call predecessors, (345), 118 states have return successors, (442), 360 states have call predecessors, (442), 345 states have call successors, (442) [2022-11-20 11:12:30,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5668 states to 5668 states and 8793 transitions. [2022-11-20 11:12:30,676 INFO L78 Accepts]: Start accepts. Automaton has 5668 states and 8793 transitions. Word has length 167 [2022-11-20 11:12:30,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:30,677 INFO L495 AbstractCegarLoop]: Abstraction has 5668 states and 8793 transitions. [2022-11-20 11:12:30,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:12:30,677 INFO L276 IsEmpty]: Start isEmpty. Operand 5668 states and 8793 transitions. [2022-11-20 11:12:30,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 11:12:30,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:30,682 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:12:30,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 11:12:30,682 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:12:30,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:30,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1031449898, now seen corresponding path program 1 times [2022-11-20 11:12:30,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:30,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707050654] [2022-11-20 11:12:30,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:30,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:30,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:30,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:12:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:30,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:12:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:30,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:12:30,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:30,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:12:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:30,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-20 11:12:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:30,956 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 11:12:30,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:30,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707050654] [2022-11-20 11:12:30,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707050654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:30,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:30,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:12:30,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447446789] [2022-11-20 11:12:30,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:30,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:12:30,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:30,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:12:30,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:12:30,959 INFO L87 Difference]: Start difference. First operand 5668 states and 8793 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:12:41,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:41,643 INFO L93 Difference]: Finished difference Result 22590 states and 35327 transitions. [2022-11-20 11:12:41,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:12:41,644 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-20 11:12:41,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:41,707 INFO L225 Difference]: With dead ends: 22590 [2022-11-20 11:12:41,708 INFO L226 Difference]: Without dead ends: 16942 [2022-11-20 11:12:41,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:12:41,728 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 1537 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 3758 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 2244 SdHoareTripleChecker+Invalid, 3823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:41,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1554 Valid, 2244 Invalid, 3823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3758 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-20 11:12:41,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16942 states. [2022-11-20 11:12:44,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16942 to 10920. [2022-11-20 11:12:44,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10920 states, 10040 states have (on average 1.5360557768924303) internal successors, (15422), 10073 states have internal predecessors, (15422), 649 states have call successors, (649), 198 states have call predecessors, (649), 230 states have return successors, (924), 680 states have call predecessors, (924), 649 states have call successors, (924) [2022-11-20 11:12:44,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10920 states to 10920 states and 16995 transitions. [2022-11-20 11:12:44,198 INFO L78 Accepts]: Start accepts. Automaton has 10920 states and 16995 transitions. Word has length 167 [2022-11-20 11:12:44,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:12:44,198 INFO L495 AbstractCegarLoop]: Abstraction has 10920 states and 16995 transitions. [2022-11-20 11:12:44,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:12:44,199 INFO L276 IsEmpty]: Start isEmpty. Operand 10920 states and 16995 transitions. [2022-11-20 11:12:44,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 11:12:44,205 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:12:44,206 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:12:44,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 11:12:44,206 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:12:44,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:12:44,207 INFO L85 PathProgramCache]: Analyzing trace with hash -742630508, now seen corresponding path program 1 times [2022-11-20 11:12:44,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:12:44,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108107293] [2022-11-20 11:12:44,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:12:44,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:12:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:44,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:12:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:44,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:12:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:44,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:12:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:44,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:12:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:44,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-20 11:12:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:12:44,481 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 11:12:44,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:12:44,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108107293] [2022-11-20 11:12:44,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108107293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:12:44,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:12:44,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:12:44,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502933825] [2022-11-20 11:12:44,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:12:44,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:12:44,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:12:44,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:12:44,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:12:44,484 INFO L87 Difference]: Start difference. First operand 10920 states and 16995 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:12:58,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:12:58,901 INFO L93 Difference]: Finished difference Result 43472 states and 68187 transitions. [2022-11-20 11:12:58,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:12:58,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-20 11:12:58,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:12:59,029 INFO L225 Difference]: With dead ends: 43472 [2022-11-20 11:12:59,029 INFO L226 Difference]: Without dead ends: 32572 [2022-11-20 11:12:59,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:12:59,070 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 1803 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 3070 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 3138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:12:59,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1833 Valid, 2248 Invalid, 3138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3070 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-20 11:12:59,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32572 states. [2022-11-20 11:13:03,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32572 to 21481. [2022-11-20 11:13:03,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21481 states, 19785 states have (on average 1.5357088703563306) internal successors, (30384), 19850 states have internal predecessors, (30384), 1241 states have call successors, (1241), 390 states have call predecessors, (1241), 454 states have return successors, (2034), 1304 states have call predecessors, (2034), 1241 states have call successors, (2034) [2022-11-20 11:13:03,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21481 states to 21481 states and 33659 transitions. [2022-11-20 11:13:03,940 INFO L78 Accepts]: Start accepts. Automaton has 21481 states and 33659 transitions. Word has length 167 [2022-11-20 11:13:03,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:03,941 INFO L495 AbstractCegarLoop]: Abstraction has 21481 states and 33659 transitions. [2022-11-20 11:13:03,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:13:03,941 INFO L276 IsEmpty]: Start isEmpty. Operand 21481 states and 33659 transitions. [2022-11-20 11:13:03,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 11:13:03,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:03,955 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:03,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-20 11:13:03,955 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:03,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:03,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1287503082, now seen corresponding path program 1 times [2022-11-20 11:13:03,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:03,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015289272] [2022-11-20 11:13:03,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:03,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:04,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:13:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:04,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:13:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:04,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:13:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:04,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:13:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:04,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-20 11:13:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:04,234 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 11:13:04,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:04,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015289272] [2022-11-20 11:13:04,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015289272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:04,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:04,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:13:04,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623719717] [2022-11-20 11:13:04,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:04,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:13:04,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:04,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:13:04,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:13:04,237 INFO L87 Difference]: Start difference. First operand 21481 states and 33659 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:13:29,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:13:29,321 INFO L93 Difference]: Finished difference Result 84847 states and 133953 transitions. [2022-11-20 11:13:29,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:13:29,322 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 167 [2022-11-20 11:13:29,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:13:29,603 INFO L225 Difference]: With dead ends: 84847 [2022-11-20 11:13:29,603 INFO L226 Difference]: Without dead ends: 63386 [2022-11-20 11:13:29,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:13:29,684 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 1516 mSDsluCounter, 1737 mSDsCounter, 0 mSdLazyCounter, 3631 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 3696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:13:29,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 2248 Invalid, 3696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3631 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-20 11:13:29,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63386 states. [2022-11-20 11:13:39,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63386 to 42570. [2022-11-20 11:13:39,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42570 states, 39274 states have (on average 1.5363344706421551) internal successors, (60338), 39403 states have internal predecessors, (60338), 2393 states have call successors, (2393), 774 states have call predecessors, (2393), 902 states have return successors, (4708), 2520 states have call predecessors, (4708), 2393 states have call successors, (4708) [2022-11-20 11:13:39,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42570 states to 42570 states and 67439 transitions. [2022-11-20 11:13:39,642 INFO L78 Accepts]: Start accepts. Automaton has 42570 states and 67439 transitions. Word has length 167 [2022-11-20 11:13:39,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:13:39,643 INFO L495 AbstractCegarLoop]: Abstraction has 42570 states and 67439 transitions. [2022-11-20 11:13:39,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 11:13:39,643 INFO L276 IsEmpty]: Start isEmpty. Operand 42570 states and 67439 transitions. [2022-11-20 11:13:39,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-20 11:13:39,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:13:39,665 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:13:39,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-20 11:13:39,666 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:13:39,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:13:39,666 INFO L85 PathProgramCache]: Analyzing trace with hash -612342956, now seen corresponding path program 1 times [2022-11-20 11:13:39,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:13:39,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290748581] [2022-11-20 11:13:39,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:13:39,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:13:39,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:39,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:13:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:39,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-20 11:13:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:39,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:13:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:39,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 11:13:39,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:39,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-11-20 11:13:39,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:13:39,947 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 11:13:39,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:13:39,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290748581] [2022-11-20 11:13:39,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290748581] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:13:39,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:13:39,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:13:39,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804967579] [2022-11-20 11:13:39,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:13:39,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:13:39,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:13:39,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:13:39,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:13:39,951 INFO L87 Difference]: Start difference. First operand 42570 states and 67439 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)