./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8 --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 0a05a45e59c4449e0f919ee265abbb6a4949f64a9be713d749d79d0baffd63df --- 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-2329fc7 [2022-12-13 11:29:48,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 11:29:48,710 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 11:29:48,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 11:29:48,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 11:29:48,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 11:29:48,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 11:29:48,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 11:29:48,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 11:29:48,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 11:29:48,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 11:29:48,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 11:29:48,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 11:29:48,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 11:29:48,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 11:29:48,757 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 11:29:48,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 11:29:48,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 11:29:48,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 11:29:48,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 11:29:48,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 11:29:48,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 11:29:48,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 11:29:48,766 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 11:29:48,776 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 11:29:48,776 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 11:29:48,776 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 11:29:48,777 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 11:29:48,778 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 11:29:48,779 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 11:29:48,779 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 11:29:48,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 11:29:48,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 11:29:48,781 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 11:29:48,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 11:29:48,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 11:29:48,783 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 11:29:48,783 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 11:29:48,783 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 11:29:48,784 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 11:29:48,785 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 11:29:48,785 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 11:29:48,806 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 11:29:48,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 11:29:48,807 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 11:29:48,807 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 11:29:48,808 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 11:29:48,808 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 11:29:48,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 11:29:48,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 11:29:48,809 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 11:29:48,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 11:29:48,809 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 11:29:48,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 11:29:48,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 11:29:48,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 11:29:48,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 11:29:48,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 11:29:48,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 11:29:48,810 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 11:29:48,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 11:29:48,811 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 11:29:48,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 11:29:48,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 11:29:48,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 11:29:48,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 11:29:48,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:29:48,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 11:29:48,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 11:29:48,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 11:29:48,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 11:29:48,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 11:29:48,812 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 11:29:48,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 11:29:48,813 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 11:29:48,813 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 11:29:48,813 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 11:29:48,813 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a05a45e59c4449e0f919ee265abbb6a4949f64a9be713d749d79d0baffd63df [2022-12-13 11:29:49,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 11:29:49,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 11:29:49,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 11:29:49,029 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 11:29:49,029 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 11:29:49,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2022-12-13 11:29:51,659 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 11:29:51,829 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 11:29:51,829 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2022-12-13 11:29:51,836 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/data/7d1d8c787/ba39c2245a68457d84e5159fdaf5adab/FLAG675ca30b7 [2022-12-13 11:29:51,847 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/data/7d1d8c787/ba39c2245a68457d84e5159fdaf5adab [2022-12-13 11:29:51,849 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 11:29:51,849 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 11:29:51,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 11:29:51,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 11:29:51,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 11:29:51,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:29:51" (1/1) ... [2022-12-13 11:29:51,857 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4687f85c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:29:51, skipping insertion in model container [2022-12-13 11:29:51,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 11:29:51" (1/1) ... [2022-12-13 11:29:51,863 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 11:29:51,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 11:29:52,055 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_e585238f-1e0b-4b43-a1a4-25327c90667c/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c[14577,14590] [2022-12-13 11:29:52,059 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:29:52,069 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 11:29:52,130 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_e585238f-1e0b-4b43-a1a4-25327c90667c/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c[14577,14590] [2022-12-13 11:29:52,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 11:29:52,147 INFO L208 MainTranslator]: Completed translation [2022-12-13 11:29:52,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:29:52 WrapperNode [2022-12-13 11:29:52,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 11:29:52,148 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 11:29:52,149 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 11:29:52,149 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 11:29:52,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:29:52" (1/1) ... [2022-12-13 11:29:52,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:29:52" (1/1) ... [2022-12-13 11:29:52,202 INFO L138 Inliner]: procedures = 32, calls = 47, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 480 [2022-12-13 11:29:52,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 11:29:52,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 11:29:52,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 11:29:52,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 11:29:52,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:29:52" (1/1) ... [2022-12-13 11:29:52,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:29:52" (1/1) ... [2022-12-13 11:29:52,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:29:52" (1/1) ... [2022-12-13 11:29:52,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:29:52" (1/1) ... [2022-12-13 11:29:52,232 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:29:52" (1/1) ... [2022-12-13 11:29:52,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:29:52" (1/1) ... [2022-12-13 11:29:52,241 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:29:52" (1/1) ... [2022-12-13 11:29:52,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:29:52" (1/1) ... [2022-12-13 11:29:52,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 11:29:52,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 11:29:52,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 11:29:52,250 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 11:29:52,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:29:52" (1/1) ... [2022-12-13 11:29:52,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 11:29:52,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:29:52,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 11:29:52,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 11:29:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2022-12-13 11:29:52,313 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2022-12-13 11:29:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 11:29:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2022-12-13 11:29:52,313 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2022-12-13 11:29:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-12-13 11:29:52,313 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-12-13 11:29:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 11:29:52,313 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 11:29:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 11:29:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2022-12-13 11:29:52,314 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2022-12-13 11:29:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 11:29:52,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 11:29:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2022-12-13 11:29:52,314 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2022-12-13 11:29:52,404 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 11:29:52,406 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 11:29:52,815 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 11:29:52,824 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 11:29:52,824 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 11:29:52,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:29:52 BoogieIcfgContainer [2022-12-13 11:29:52,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 11:29:52,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 11:29:52,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 11:29:52,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 11:29:52,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 11:29:51" (1/3) ... [2022-12-13 11:29:52,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bdbbf83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:29:52, skipping insertion in model container [2022-12-13 11:29:52,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 11:29:52" (2/3) ... [2022-12-13 11:29:52,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bdbbf83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 11:29:52, skipping insertion in model container [2022-12-13 11:29:52,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 11:29:52" (3/3) ... [2022-12-13 11:29:52,835 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2022-12-13 11:29:52,853 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 11:29:52,853 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 11:29:52,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 11:29:52,911 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;@31a309cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 11:29:52,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 11:29:52,916 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 136 states have (on average 1.5661764705882353) internal successors, (213), 138 states have internal predecessors, (213), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-12-13 11:29:52,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 11:29:52,926 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:52,926 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] [2022-12-13 11:29:52,927 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:52,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:52,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1815111432, now seen corresponding path program 1 times [2022-12-13 11:29:52,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:52,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764815813] [2022-12-13 11:29:52,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:52,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:53,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 11:29:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:53,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:29:53,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:53,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764815813] [2022-12-13 11:29:53,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764815813] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:53,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:53,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 11:29:53,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235150737] [2022-12-13 11:29:53,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:53,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 11:29:53,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:53,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 11:29:53,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 11:29:53,151 INFO L87 Difference]: Start difference. First operand has 173 states, 136 states have (on average 1.5661764705882353) internal successors, (213), 138 states have internal predecessors, (213), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 11:29:53,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:53,197 INFO L93 Difference]: Finished difference Result 326 states and 539 transitions. [2022-12-13 11:29:53,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 11:29:53,198 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-12-13 11:29:53,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:53,208 INFO L225 Difference]: With dead ends: 326 [2022-12-13 11:29:53,208 INFO L226 Difference]: Without dead ends: 169 [2022-12-13 11:29:53,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 11:29:53,216 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:53,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:29:53,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-12-13 11:29:53,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-12-13 11:29:53,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 133 states have (on average 1.5488721804511278) internal successors, (206), 134 states have internal predecessors, (206), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-12-13 11:29:53,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 264 transitions. [2022-12-13 11:29:53,267 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 264 transitions. Word has length 28 [2022-12-13 11:29:53,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:53,267 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 264 transitions. [2022-12-13 11:29:53,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 11:29:53,268 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 264 transitions. [2022-12-13 11:29:53,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 11:29:53,269 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:53,270 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] [2022-12-13 11:29:53,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 11:29:53,270 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:53,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:53,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1596256714, now seen corresponding path program 1 times [2022-12-13 11:29:53,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:53,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902625727] [2022-12-13 11:29:53,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:53,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:53,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 11:29:53,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:53,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:29:53,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:53,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902625727] [2022-12-13 11:29:53,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902625727] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:53,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:53,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 11:29:53,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409901624] [2022-12-13 11:29:53,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:53,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:29:53,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:53,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:29:53,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:29:53,456 INFO L87 Difference]: Start difference. First operand 169 states and 264 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 11:29:53,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:53,542 INFO L93 Difference]: Finished difference Result 324 states and 502 transitions. [2022-12-13 11:29:53,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:29:53,543 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-12-13 11:29:53,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:53,544 INFO L225 Difference]: With dead ends: 324 [2022-12-13 11:29:53,544 INFO L226 Difference]: Without dead ends: 169 [2022-12-13 11:29:53,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:29:53,547 INFO L413 NwaCegarLoop]: 260 mSDtfsCounter, 137 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:53,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1117 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:29:53,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-12-13 11:29:53,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2022-12-13 11:29:53,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 133 states have (on average 1.4586466165413534) internal successors, (194), 134 states have internal predecessors, (194), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-12-13 11:29:53,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 252 transitions. [2022-12-13 11:29:53,564 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 252 transitions. Word has length 28 [2022-12-13 11:29:53,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:53,564 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 252 transitions. [2022-12-13 11:29:53,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 11:29:53,564 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 252 transitions. [2022-12-13 11:29:53,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-13 11:29:53,566 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:53,566 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] [2022-12-13 11:29:53,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 11:29:53,566 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:53,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:53,567 INFO L85 PathProgramCache]: Analyzing trace with hash 187133938, now seen corresponding path program 1 times [2022-12-13 11:29:53,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:53,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414816453] [2022-12-13 11:29:53,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:53,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:53,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:29:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:53,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 11:29:53,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:53,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414816453] [2022-12-13 11:29:53,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414816453] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:53,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:53,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:29:53,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182413082] [2022-12-13 11:29:53,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:53,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:29:53,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:53,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:29:53,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:29:53,792 INFO L87 Difference]: Start difference. First operand 169 states and 252 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 11:29:53,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:53,836 INFO L93 Difference]: Finished difference Result 325 states and 494 transitions. [2022-12-13 11:29:53,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:29:53,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2022-12-13 11:29:53,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:53,838 INFO L225 Difference]: With dead ends: 325 [2022-12-13 11:29:53,838 INFO L226 Difference]: Without dead ends: 173 [2022-12-13 11:29:53,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:29:53,840 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 5 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:53,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 728 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:29:53,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-12-13 11:29:53,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-12-13 11:29:53,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 136 states have (on average 1.4485294117647058) internal successors, (197), 137 states have internal predecessors, (197), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-12-13 11:29:53,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 255 transitions. [2022-12-13 11:29:53,856 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 255 transitions. Word has length 39 [2022-12-13 11:29:53,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:53,856 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 255 transitions. [2022-12-13 11:29:53,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 11:29:53,856 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 255 transitions. [2022-12-13 11:29:53,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-13 11:29:53,858 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:53,858 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:53,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 11:29:53,858 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:53,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:53,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1556220768, now seen corresponding path program 1 times [2022-12-13 11:29:53,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:53,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142298096] [2022-12-13 11:29:53,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:53,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:53,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:53,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:29:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:53,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 11:29:53,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:53,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 11:29:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:53,929 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 11:29:53,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:53,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142298096] [2022-12-13 11:29:53,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142298096] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:53,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:53,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:29:53,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337816656] [2022-12-13 11:29:53,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:53,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:29:53,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:53,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:29:53,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:29:53,932 INFO L87 Difference]: Start difference. First operand 173 states and 255 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 11:29:53,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:53,972 INFO L93 Difference]: Finished difference Result 476 states and 713 transitions. [2022-12-13 11:29:53,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:29:53,973 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2022-12-13 11:29:53,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:53,975 INFO L225 Difference]: With dead ends: 476 [2022-12-13 11:29:53,976 INFO L226 Difference]: Without dead ends: 320 [2022-12-13 11:29:53,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:29:53,977 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 208 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:53,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 528 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:29:53,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-12-13 11:29:54,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 315. [2022-12-13 11:29:54,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 243 states have (on average 1.4691358024691359) internal successors, (357), 245 states have internal predecessors, (357), 57 states have call successors, (57), 14 states have call predecessors, (57), 14 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2022-12-13 11:29:54,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 471 transitions. [2022-12-13 11:29:54,012 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 471 transitions. Word has length 55 [2022-12-13 11:29:54,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:54,013 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 471 transitions. [2022-12-13 11:29:54,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 11:29:54,013 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 471 transitions. [2022-12-13 11:29:54,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 11:29:54,015 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:54,015 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:54,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 11:29:54,015 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:54,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:54,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1976715472, now seen corresponding path program 1 times [2022-12-13 11:29:54,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:54,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383232434] [2022-12-13 11:29:54,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:54,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:54,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:29:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:54,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 11:29:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:54,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 11:29:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:54,079 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 11:29:54,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:54,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383232434] [2022-12-13 11:29:54,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383232434] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:54,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:54,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:29:54,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158804382] [2022-12-13 11:29:54,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:54,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:29:54,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:54,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:29:54,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:29:54,081 INFO L87 Difference]: Start difference. First operand 315 states and 471 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 11:29:54,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:54,137 INFO L93 Difference]: Finished difference Result 887 states and 1337 transitions. [2022-12-13 11:29:54,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:29:54,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2022-12-13 11:29:54,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:54,143 INFO L225 Difference]: With dead ends: 887 [2022-12-13 11:29:54,143 INFO L226 Difference]: Without dead ends: 589 [2022-12-13 11:29:54,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:29:54,146 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 204 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:54,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 545 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:29:54,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2022-12-13 11:29:54,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 574. [2022-12-13 11:29:54,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 432 states have (on average 1.474537037037037) internal successors, (637), 436 states have internal predecessors, (637), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) [2022-12-13 11:29:54,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 863 transitions. [2022-12-13 11:29:54,216 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 863 transitions. Word has length 56 [2022-12-13 11:29:54,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:54,217 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 863 transitions. [2022-12-13 11:29:54,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 11:29:54,217 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 863 transitions. [2022-12-13 11:29:54,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 11:29:54,219 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:54,219 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:54,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 11:29:54,220 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:54,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:54,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1038388146, now seen corresponding path program 1 times [2022-12-13 11:29:54,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:54,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374624209] [2022-12-13 11:29:54,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:54,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:54,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:54,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:29:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:54,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 11:29:54,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:54,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 11:29:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:54,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 11:29:54,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:54,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374624209] [2022-12-13 11:29:54,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374624209] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:54,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:54,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:29:54,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962098969] [2022-12-13 11:29:54,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:54,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:29:54,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:54,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:29:54,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:29:54,345 INFO L87 Difference]: Start difference. First operand 574 states and 863 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 11:29:54,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:54,682 INFO L93 Difference]: Finished difference Result 1559 states and 2395 transitions. [2022-12-13 11:29:54,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:29:54,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2022-12-13 11:29:54,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:54,689 INFO L225 Difference]: With dead ends: 1559 [2022-12-13 11:29:54,689 INFO L226 Difference]: Without dead ends: 1002 [2022-12-13 11:29:54,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:29:54,692 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 612 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 656 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:54,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 656 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:29:54,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2022-12-13 11:29:54,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 651. [2022-12-13 11:29:54,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 501 states have (on average 1.4610778443113772) internal successors, (732), 504 states have internal predecessors, (732), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-12-13 11:29:54,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 966 transitions. [2022-12-13 11:29:54,775 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 966 transitions. Word has length 56 [2022-12-13 11:29:54,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:54,776 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 966 transitions. [2022-12-13 11:29:54,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 11:29:54,776 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 966 transitions. [2022-12-13 11:29:54,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-13 11:29:54,777 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:54,778 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:54,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 11:29:54,778 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:54,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:54,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1231779263, now seen corresponding path program 1 times [2022-12-13 11:29:54,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:54,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160365615] [2022-12-13 11:29:54,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:54,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:54,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:29:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:54,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 11:29:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:54,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 11:29:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:54,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 11:29:54,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:54,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160365615] [2022-12-13 11:29:54,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160365615] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:54,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:54,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 11:29:54,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020130051] [2022-12-13 11:29:54,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:54,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:29:54,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:54,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:29:54,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:29:54,896 INFO L87 Difference]: Start difference. First operand 651 states and 966 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 11:29:55,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:55,196 INFO L93 Difference]: Finished difference Result 1563 states and 2395 transitions. [2022-12-13 11:29:55,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 11:29:55,197 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2022-12-13 11:29:55,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:55,202 INFO L225 Difference]: With dead ends: 1563 [2022-12-13 11:29:55,203 INFO L226 Difference]: Without dead ends: 1006 [2022-12-13 11:29:55,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:29:55,205 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 609 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:55,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 658 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:29:55,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2022-12-13 11:29:55,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 659. [2022-12-13 11:29:55,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 509 states have (on average 1.4538310412573674) internal successors, (740), 512 states have internal predecessors, (740), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-12-13 11:29:55,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 974 transitions. [2022-12-13 11:29:55,274 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 974 transitions. Word has length 57 [2022-12-13 11:29:55,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:55,274 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 974 transitions. [2022-12-13 11:29:55,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 11:29:55,275 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 974 transitions. [2022-12-13 11:29:55,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-13 11:29:55,275 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:55,275 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:55,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 11:29:55,276 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:55,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:55,276 INFO L85 PathProgramCache]: Analyzing trace with hash 496428017, now seen corresponding path program 1 times [2022-12-13 11:29:55,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:55,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110425738] [2022-12-13 11:29:55,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:55,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:55,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:29:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:55,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 11:29:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:55,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 11:29:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:55,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 11:29:55,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:55,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110425738] [2022-12-13 11:29:55,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110425738] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:55,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:55,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:29:55,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158193865] [2022-12-13 11:29:55,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:55,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:29:55,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:55,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:29:55,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:29:55,361 INFO L87 Difference]: Start difference. First operand 659 states and 974 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 11:29:55,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:55,658 INFO L93 Difference]: Finished difference Result 1563 states and 2387 transitions. [2022-12-13 11:29:55,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:29:55,658 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 59 [2022-12-13 11:29:55,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:55,664 INFO L225 Difference]: With dead ends: 1563 [2022-12-13 11:29:55,664 INFO L226 Difference]: Without dead ends: 1006 [2022-12-13 11:29:55,666 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 [2022-12-13 11:29:55,666 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 177 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:55,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 631 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:29:55,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1006 states. [2022-12-13 11:29:55,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1006 to 659. [2022-12-13 11:29:55,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 509 states have (on average 1.4459724950884087) internal successors, (736), 512 states have internal predecessors, (736), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-12-13 11:29:55,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 970 transitions. [2022-12-13 11:29:55,745 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 970 transitions. Word has length 59 [2022-12-13 11:29:55,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:55,746 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 970 transitions. [2022-12-13 11:29:55,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 11:29:55,746 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 970 transitions. [2022-12-13 11:29:55,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-13 11:29:55,747 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:55,747 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:55,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 11:29:55,747 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:55,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:55,748 INFO L85 PathProgramCache]: Analyzing trace with hash -906823040, now seen corresponding path program 1 times [2022-12-13 11:29:55,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:55,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928277726] [2022-12-13 11:29:55,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:55,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:55,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:29:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:55,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 11:29:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:55,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:29:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 11:29:55,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:55,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928277726] [2022-12-13 11:29:55,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928277726] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:55,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:55,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:29:55,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803981277] [2022-12-13 11:29:55,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:55,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:29:55,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:55,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:29:55,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:29:55,897 INFO L87 Difference]: Start difference. First operand 659 states and 970 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 11:29:55,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:55,963 INFO L93 Difference]: Finished difference Result 1236 states and 1843 transitions. [2022-12-13 11:29:55,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:29:55,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 60 [2022-12-13 11:29:55,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:55,966 INFO L225 Difference]: With dead ends: 1236 [2022-12-13 11:29:55,966 INFO L226 Difference]: Without dead ends: 679 [2022-12-13 11:29:55,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:29:55,968 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 6 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:55,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 740 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:29:55,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-12-13 11:29:56,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 679. [2022-12-13 11:29:56,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 525 states have (on average 1.4323809523809523) internal successors, (752), 528 states have internal predecessors, (752), 117 states have call successors, (117), 36 states have call predecessors, (117), 36 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-12-13 11:29:56,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 986 transitions. [2022-12-13 11:29:56,006 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 986 transitions. Word has length 60 [2022-12-13 11:29:56,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:56,007 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 986 transitions. [2022-12-13 11:29:56,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-12-13 11:29:56,007 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 986 transitions. [2022-12-13 11:29:56,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 11:29:56,008 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:56,008 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:56,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 11:29:56,008 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:56,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:56,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1438142618, now seen corresponding path program 1 times [2022-12-13 11:29:56,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:56,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010408791] [2022-12-13 11:29:56,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:56,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:29:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 11:29:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:29:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 11:29:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 11:29:56,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:56,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010408791] [2022-12-13 11:29:56,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010408791] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:56,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:56,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:29:56,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90800635] [2022-12-13 11:29:56,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:56,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:29:56,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:56,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:29:56,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:29:56,120 INFO L87 Difference]: Start difference. First operand 679 states and 986 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 11:29:56,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:56,200 INFO L93 Difference]: Finished difference Result 1276 states and 1887 transitions. [2022-12-13 11:29:56,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:29:56,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 68 [2022-12-13 11:29:56,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:56,203 INFO L225 Difference]: With dead ends: 1276 [2022-12-13 11:29:56,204 INFO L226 Difference]: Without dead ends: 699 [2022-12-13 11:29:56,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:29:56,206 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 6 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:56,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 726 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:29:56,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-12-13 11:29:56,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2022-12-13 11:29:56,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 541 states have (on average 1.4195933456561922) internal successors, (768), 544 states have internal predecessors, (768), 117 states have call successors, (117), 40 states have call predecessors, (117), 40 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-12-13 11:29:56,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1002 transitions. [2022-12-13 11:29:56,273 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1002 transitions. Word has length 68 [2022-12-13 11:29:56,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:56,273 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 1002 transitions. [2022-12-13 11:29:56,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-12-13 11:29:56,274 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1002 transitions. [2022-12-13 11:29:56,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-13 11:29:56,275 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:56,275 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:56,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 11:29:56,275 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:56,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:56,276 INFO L85 PathProgramCache]: Analyzing trace with hash 288384240, now seen corresponding path program 1 times [2022-12-13 11:29:56,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:56,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205832948] [2022-12-13 11:29:56,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:56,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:29:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 11:29:56,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:29:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 11:29:56,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 11:29:56,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 11:29:56,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:56,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205832948] [2022-12-13 11:29:56,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205832948] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:56,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:56,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:29:56,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402285905] [2022-12-13 11:29:56,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:56,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:29:56,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:56,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:29:56,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:29:56,402 INFO L87 Difference]: Start difference. First operand 699 states and 1002 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-13 11:29:56,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:56,485 INFO L93 Difference]: Finished difference Result 1312 states and 1903 transitions. [2022-12-13 11:29:56,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:29:56,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2022-12-13 11:29:56,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:56,489 INFO L225 Difference]: With dead ends: 1312 [2022-12-13 11:29:56,489 INFO L226 Difference]: Without dead ends: 715 [2022-12-13 11:29:56,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:29:56,491 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 5 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:56,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 735 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:29:56,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-12-13 11:29:56,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2022-12-13 11:29:56,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 553 states have (on average 1.410488245931284) internal successors, (780), 556 states have internal predecessors, (780), 117 states have call successors, (117), 44 states have call predecessors, (117), 44 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-12-13 11:29:56,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1014 transitions. [2022-12-13 11:29:56,558 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1014 transitions. Word has length 76 [2022-12-13 11:29:56,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:56,558 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 1014 transitions. [2022-12-13 11:29:56,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-13 11:29:56,558 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1014 transitions. [2022-12-13 11:29:56,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-13 11:29:56,560 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:56,560 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:56,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 11:29:56,560 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:56,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:56,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1610123753, now seen corresponding path program 1 times [2022-12-13 11:29:56,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:56,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459425582] [2022-12-13 11:29:56,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:56,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:29:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 11:29:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:29:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 11:29:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 11:29:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,707 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 11:29:56,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:56,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459425582] [2022-12-13 11:29:56,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459425582] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:56,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:56,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:29:56,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235221688] [2022-12-13 11:29:56,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:56,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:29:56,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:56,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:29:56,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:29:56,709 INFO L87 Difference]: Start difference. First operand 715 states and 1014 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-13 11:29:56,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:56,794 INFO L93 Difference]: Finished difference Result 1348 states and 1943 transitions. [2022-12-13 11:29:56,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:29:56,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2022-12-13 11:29:56,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:56,796 INFO L225 Difference]: With dead ends: 1348 [2022-12-13 11:29:56,796 INFO L226 Difference]: Without dead ends: 735 [2022-12-13 11:29:56,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:29:56,798 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 6 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:56,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 726 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:29:56,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-12-13 11:29:56,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2022-12-13 11:29:56,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 569 states have (on average 1.398945518453427) internal successors, (796), 572 states have internal predecessors, (796), 117 states have call successors, (117), 48 states have call predecessors, (117), 48 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-12-13 11:29:56,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1030 transitions. [2022-12-13 11:29:56,836 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1030 transitions. Word has length 76 [2022-12-13 11:29:56,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:56,836 INFO L495 AbstractCegarLoop]: Abstraction has 735 states and 1030 transitions. [2022-12-13 11:29:56,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-12-13 11:29:56,836 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1030 transitions. [2022-12-13 11:29:56,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-13 11:29:56,837 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:56,837 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:56,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 11:29:56,838 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:56,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:56,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1718962299, now seen corresponding path program 1 times [2022-12-13 11:29:56,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:56,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540671865] [2022-12-13 11:29:56,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:56,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:56,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:29:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 11:29:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:29:56,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 11:29:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 11:29:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 11:29:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:56,968 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 11:29:56,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:56,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540671865] [2022-12-13 11:29:56,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540671865] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:56,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:56,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:29:56,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429972977] [2022-12-13 11:29:56,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:56,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:29:56,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:56,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:29:56,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:29:56,970 INFO L87 Difference]: Start difference. First operand 735 states and 1030 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-13 11:29:57,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:57,031 INFO L93 Difference]: Finished difference Result 1392 states and 1971 transitions. [2022-12-13 11:29:57,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:29:57,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 84 [2022-12-13 11:29:57,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:57,034 INFO L225 Difference]: With dead ends: 1392 [2022-12-13 11:29:57,034 INFO L226 Difference]: Without dead ends: 759 [2022-12-13 11:29:57,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:29:57,036 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 7 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:57,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 737 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:29:57,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2022-12-13 11:29:57,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 759. [2022-12-13 11:29:57,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 589 states have (on average 1.3853989813242784) internal successors, (816), 592 states have internal predecessors, (816), 117 states have call successors, (117), 52 states have call predecessors, (117), 52 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-12-13 11:29:57,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1050 transitions. [2022-12-13 11:29:57,079 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1050 transitions. Word has length 84 [2022-12-13 11:29:57,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:57,080 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 1050 transitions. [2022-12-13 11:29:57,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-12-13 11:29:57,080 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1050 transitions. [2022-12-13 11:29:57,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-13 11:29:57,081 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:57,081 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:57,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 11:29:57,082 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:57,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:57,082 INFO L85 PathProgramCache]: Analyzing trace with hash 966027762, now seen corresponding path program 1 times [2022-12-13 11:29:57,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:57,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232413422] [2022-12-13 11:29:57,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:57,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:57,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:29:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:57,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 11:29:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:57,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:29:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:57,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 11:29:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:57,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 11:29:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:57,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 11:29:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:57,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 11:29:57,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:57,301 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 11:29:57,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:57,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232413422] [2022-12-13 11:29:57,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232413422] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:57,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:57,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 11:29:57,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091722194] [2022-12-13 11:29:57,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:57,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:29:57,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:57,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:29:57,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:29:57,303 INFO L87 Difference]: Start difference. First operand 759 states and 1050 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 11:29:57,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:57,594 INFO L93 Difference]: Finished difference Result 2227 states and 3125 transitions. [2022-12-13 11:29:57,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 11:29:57,594 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 87 [2022-12-13 11:29:57,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:57,599 INFO L225 Difference]: With dead ends: 2227 [2022-12-13 11:29:57,599 INFO L226 Difference]: Without dead ends: 1570 [2022-12-13 11:29:57,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-13 11:29:57,601 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 315 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:57,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 1853 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:29:57,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2022-12-13 11:29:57,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 912. [2022-12-13 11:29:57,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 705 states have (on average 1.374468085106383) internal successors, (969), 709 states have internal predecessors, (969), 141 states have call successors, (141), 65 states have call predecessors, (141), 65 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2022-12-13 11:29:57,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1251 transitions. [2022-12-13 11:29:57,672 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1251 transitions. Word has length 87 [2022-12-13 11:29:57,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:57,672 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 1251 transitions. [2022-12-13 11:29:57,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 11:29:57,673 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1251 transitions. [2022-12-13 11:29:57,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 11:29:57,673 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:57,673 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:57,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 11:29:57,674 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:57,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:57,674 INFO L85 PathProgramCache]: Analyzing trace with hash 2026376801, now seen corresponding path program 1 times [2022-12-13 11:29:57,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:57,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393809532] [2022-12-13 11:29:57,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:57,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:57,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:29:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:57,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 11:29:57,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:57,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:29:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:57,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 11:29:57,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:57,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 11:29:57,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:57,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 11:29:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:57,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 11:29:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-13 11:29:57,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:57,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393809532] [2022-12-13 11:29:57,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393809532] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:57,816 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:57,816 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:29:57,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141489867] [2022-12-13 11:29:57,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:57,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:29:57,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:57,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:29:57,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:29:57,818 INFO L87 Difference]: Start difference. First operand 912 states and 1251 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-12-13 11:29:57,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:57,918 INFO L93 Difference]: Finished difference Result 1697 states and 2351 transitions. [2022-12-13 11:29:57,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:29:57,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 91 [2022-12-13 11:29:57,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:57,921 INFO L225 Difference]: With dead ends: 1697 [2022-12-13 11:29:57,921 INFO L226 Difference]: Without dead ends: 932 [2022-12-13 11:29:57,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:29:57,924 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 5 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:57,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 735 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:29:57,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2022-12-13 11:29:57,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 932. [2022-12-13 11:29:57,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 720 states have (on average 1.3666666666666667) internal successors, (984), 724 states have internal predecessors, (984), 141 states have call successors, (141), 70 states have call predecessors, (141), 70 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2022-12-13 11:29:57,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1266 transitions. [2022-12-13 11:29:57,996 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1266 transitions. Word has length 91 [2022-12-13 11:29:57,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:57,996 INFO L495 AbstractCegarLoop]: Abstraction has 932 states and 1266 transitions. [2022-12-13 11:29:57,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-12-13 11:29:57,996 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1266 transitions. [2022-12-13 11:29:57,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 11:29:57,997 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:57,997 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:57,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 11:29:57,997 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:57,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:57,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1456343440, now seen corresponding path program 1 times [2022-12-13 11:29:57,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:57,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210873059] [2022-12-13 11:29:57,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:57,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:58,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:29:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 11:29:58,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:29:58,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 11:29:58,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 11:29:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 11:29:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 11:29:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,141 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 11:29:58,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:58,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210873059] [2022-12-13 11:29:58,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210873059] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:58,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:58,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 11:29:58,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735117224] [2022-12-13 11:29:58,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:58,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 11:29:58,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:58,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 11:29:58,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 11:29:58,142 INFO L87 Difference]: Start difference. First operand 932 states and 1266 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-12-13 11:29:58,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:58,324 INFO L93 Difference]: Finished difference Result 1343 states and 1926 transitions. [2022-12-13 11:29:58,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 11:29:58,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 90 [2022-12-13 11:29:58,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:58,330 INFO L225 Difference]: With dead ends: 1343 [2022-12-13 11:29:58,330 INFO L226 Difference]: Without dead ends: 1341 [2022-12-13 11:29:58,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:29:58,331 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 193 mSDsluCounter, 1484 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:58,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1918 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:29:58,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2022-12-13 11:29:58,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 934. [2022-12-13 11:29:58,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 720 states have (on average 1.3666666666666667) internal successors, (984), 725 states have internal predecessors, (984), 142 states have call successors, (142), 71 states have call predecessors, (142), 71 states have return successors, (142), 137 states have call predecessors, (142), 142 states have call successors, (142) [2022-12-13 11:29:58,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1268 transitions. [2022-12-13 11:29:58,396 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1268 transitions. Word has length 90 [2022-12-13 11:29:58,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:58,397 INFO L495 AbstractCegarLoop]: Abstraction has 934 states and 1268 transitions. [2022-12-13 11:29:58,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-12-13 11:29:58,397 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1268 transitions. [2022-12-13 11:29:58,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 11:29:58,398 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:58,398 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:58,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 11:29:58,398 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:58,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:58,398 INFO L85 PathProgramCache]: Analyzing trace with hash 914249721, now seen corresponding path program 1 times [2022-12-13 11:29:58,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:58,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137558845] [2022-12-13 11:29:58,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:58,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:29:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 11:29:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:29:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 11:29:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 11:29:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 11:29:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 11:29:58,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,500 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-13 11:29:58,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:58,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137558845] [2022-12-13 11:29:58,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137558845] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:58,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:58,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 11:29:58,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048530747] [2022-12-13 11:29:58,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:58,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:29:58,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:58,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:29:58,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:29:58,502 INFO L87 Difference]: Start difference. First operand 934 states and 1268 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 11:29:58,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:58,703 INFO L93 Difference]: Finished difference Result 1905 states and 2647 transitions. [2022-12-13 11:29:58,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 11:29:58,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 93 [2022-12-13 11:29:58,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:58,711 INFO L225 Difference]: With dead ends: 1905 [2022-12-13 11:29:58,711 INFO L226 Difference]: Without dead ends: 1159 [2022-12-13 11:29:58,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-13 11:29:58,714 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 350 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1804 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:58,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 1804 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:29:58,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2022-12-13 11:29:58,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 952. [2022-12-13 11:29:58,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 743 states have (on average 1.3620457604306864) internal successors, (1012), 752 states have internal predecessors, (1012), 136 states have call successors, (136), 72 states have call predecessors, (136), 72 states have return successors, (136), 127 states have call predecessors, (136), 136 states have call successors, (136) [2022-12-13 11:29:58,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1284 transitions. [2022-12-13 11:29:58,788 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1284 transitions. Word has length 93 [2022-12-13 11:29:58,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:58,789 INFO L495 AbstractCegarLoop]: Abstraction has 952 states and 1284 transitions. [2022-12-13 11:29:58,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 11:29:58,789 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1284 transitions. [2022-12-13 11:29:58,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-13 11:29:58,790 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:58,790 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:58,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 11:29:58,790 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:58,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:58,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1793206136, now seen corresponding path program 1 times [2022-12-13 11:29:58,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:58,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984578040] [2022-12-13 11:29:58,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:58,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:58,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:29:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 11:29:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:29:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 11:29:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 11:29:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 11:29:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 11:29:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 11:29:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:58,967 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 11:29:58,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:58,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984578040] [2022-12-13 11:29:58,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984578040] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:58,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:58,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 11:29:58,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079370220] [2022-12-13 11:29:58,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:58,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:29:58,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:58,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:29:58,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:29:58,969 INFO L87 Difference]: Start difference. First operand 952 states and 1284 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 11:29:59,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:29:59,174 INFO L93 Difference]: Finished difference Result 1956 states and 2712 transitions. [2022-12-13 11:29:59,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 11:29:59,175 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 95 [2022-12-13 11:29:59,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:29:59,178 INFO L225 Difference]: With dead ends: 1956 [2022-12-13 11:29:59,178 INFO L226 Difference]: Without dead ends: 1182 [2022-12-13 11:29:59,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-13 11:29:59,180 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 257 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 269 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:29:59,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [269 Valid, 1956 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:29:59,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2022-12-13 11:29:59,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 941. [2022-12-13 11:29:59,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 735 states have (on average 1.3605442176870748) internal successors, (1000), 744 states have internal predecessors, (1000), 134 states have call successors, (134), 71 states have call predecessors, (134), 71 states have return successors, (134), 125 states have call predecessors, (134), 134 states have call successors, (134) [2022-12-13 11:29:59,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1268 transitions. [2022-12-13 11:29:59,280 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1268 transitions. Word has length 95 [2022-12-13 11:29:59,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:29:59,281 INFO L495 AbstractCegarLoop]: Abstraction has 941 states and 1268 transitions. [2022-12-13 11:29:59,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-12-13 11:29:59,281 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1268 transitions. [2022-12-13 11:29:59,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-13 11:29:59,282 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:29:59,282 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:29:59,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 11:29:59,282 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:29:59,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:29:59,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1630829129, now seen corresponding path program 1 times [2022-12-13 11:29:59,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:29:59,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243799059] [2022-12-13 11:29:59,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:29:59,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:29:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:59,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:29:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:59,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 11:29:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:59,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:29:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:59,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 11:29:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:59,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 11:29:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:59,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 11:29:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:59,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 11:29:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:59,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 11:29:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:29:59,463 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 11:29:59,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:29:59,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243799059] [2022-12-13 11:29:59,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243799059] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:29:59,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:29:59,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 11:29:59,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163716036] [2022-12-13 11:29:59,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:29:59,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:29:59,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:29:59,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:29:59,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:29:59,465 INFO L87 Difference]: Start difference. First operand 941 states and 1268 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-13 11:30:00,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:30:00,072 INFO L93 Difference]: Finished difference Result 2160 states and 2992 transitions. [2022-12-13 11:30:00,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:30:00,073 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 96 [2022-12-13 11:30:00,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:30:00,078 INFO L225 Difference]: With dead ends: 2160 [2022-12-13 11:30:00,078 INFO L226 Difference]: Without dead ends: 1366 [2022-12-13 11:30:00,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:30:00,080 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 746 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 2007 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:30:00,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [752 Valid, 2007 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 11:30:00,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1366 states. [2022-12-13 11:30:00,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1366 to 957. [2022-12-13 11:30:00,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 743 states have (on average 1.3364737550471064) internal successors, (993), 753 states have internal predecessors, (993), 137 states have call successors, (137), 76 states have call predecessors, (137), 76 states have return successors, (137), 127 states have call predecessors, (137), 137 states have call successors, (137) [2022-12-13 11:30:00,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1267 transitions. [2022-12-13 11:30:00,186 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1267 transitions. Word has length 96 [2022-12-13 11:30:00,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:30:00,186 INFO L495 AbstractCegarLoop]: Abstraction has 957 states and 1267 transitions. [2022-12-13 11:30:00,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 7 states have internal predecessors, (73), 4 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-13 11:30:00,186 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1267 transitions. [2022-12-13 11:30:00,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 11:30:00,187 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:30:00,187 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:30:00,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 11:30:00,187 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:30:00,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:30:00,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1901259188, now seen corresponding path program 1 times [2022-12-13 11:30:00,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:30:00,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975021231] [2022-12-13 11:30:00,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:00,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:30:00,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:00,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:30:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:00,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:30:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:00,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:30:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:00,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 11:30:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:00,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 11:30:00,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:00,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 11:30:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:00,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 11:30:00,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:00,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 11:30:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:00,268 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 11:30:00,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:30:00,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975021231] [2022-12-13 11:30:00,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975021231] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:30:00,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:30:00,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:30:00,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500123164] [2022-12-13 11:30:00,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:30:00,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:30:00,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:30:00,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:30:00,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:30:00,270 INFO L87 Difference]: Start difference. First operand 957 states and 1267 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 11:30:00,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:30:00,580 INFO L93 Difference]: Finished difference Result 2707 states and 3655 transitions. [2022-12-13 11:30:00,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:30:00,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2022-12-13 11:30:00,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:30:00,586 INFO L225 Difference]: With dead ends: 2707 [2022-12-13 11:30:00,586 INFO L226 Difference]: Without dead ends: 1948 [2022-12-13 11:30:00,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:30:00,588 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 367 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:30:00,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [367 Valid, 1051 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:30:00,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2022-12-13 11:30:00,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1538. [2022-12-13 11:30:00,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1181 states have (on average 1.3302286198137172) internal successors, (1571), 1197 states have internal predecessors, (1571), 231 states have call successors, (231), 125 states have call predecessors, (231), 125 states have return successors, (231), 215 states have call predecessors, (231), 231 states have call successors, (231) [2022-12-13 11:30:00,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2033 transitions. [2022-12-13 11:30:00,725 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2033 transitions. Word has length 97 [2022-12-13 11:30:00,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:30:00,725 INFO L495 AbstractCegarLoop]: Abstraction has 1538 states and 2033 transitions. [2022-12-13 11:30:00,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 11:30:00,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2033 transitions. [2022-12-13 11:30:00,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 11:30:00,726 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:30:00,726 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:30:00,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 11:30:00,727 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:30:00,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:30:00,727 INFO L85 PathProgramCache]: Analyzing trace with hash -985041855, now seen corresponding path program 1 times [2022-12-13 11:30:00,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:30:00,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194951588] [2022-12-13 11:30:00,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:00,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:30:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:00,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:30:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:00,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:30:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:00,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:30:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:00,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 11:30:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:00,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 11:30:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:00,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 11:30:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:00,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 11:30:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:00,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 11:30:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:00,936 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 11:30:00,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:30:00,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194951588] [2022-12-13 11:30:00,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194951588] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:30:00,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:30:00,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 11:30:00,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025018873] [2022-12-13 11:30:00,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:30:00,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:30:00,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:30:00,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:30:00,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:30:00,938 INFO L87 Difference]: Start difference. First operand 1538 states and 2033 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 11:30:01,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:30:01,677 INFO L93 Difference]: Finished difference Result 3598 states and 4875 transitions. [2022-12-13 11:30:01,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:30:01,678 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2022-12-13 11:30:01,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:30:01,688 INFO L225 Difference]: With dead ends: 3598 [2022-12-13 11:30:01,688 INFO L226 Difference]: Without dead ends: 2336 [2022-12-13 11:30:01,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:30:01,692 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 676 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 679 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:30:01,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [679 Valid, 1870 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:30:01,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2022-12-13 11:30:01,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 1563. [2022-12-13 11:30:01,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1193 states have (on average 1.3235540653813915) internal successors, (1579), 1210 states have internal predecessors, (1579), 239 states have call successors, (239), 130 states have call predecessors, (239), 130 states have return successors, (239), 222 states have call predecessors, (239), 239 states have call successors, (239) [2022-12-13 11:30:01,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2057 transitions. [2022-12-13 11:30:01,936 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2057 transitions. Word has length 99 [2022-12-13 11:30:01,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:30:01,936 INFO L495 AbstractCegarLoop]: Abstraction has 1563 states and 2057 transitions. [2022-12-13 11:30:01,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 11:30:01,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2057 transitions. [2022-12-13 11:30:01,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 11:30:01,937 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:30:01,937 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:30:01,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 11:30:01,937 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:30:01,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:30:01,938 INFO L85 PathProgramCache]: Analyzing trace with hash -8868659, now seen corresponding path program 1 times [2022-12-13 11:30:01,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:30:01,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967532000] [2022-12-13 11:30:01,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:01,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:30:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:01,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:30:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:01,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 11:30:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:01,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 11:30:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:01,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 11:30:01,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:01,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 11:30:01,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:01,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 11:30:01,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:01,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 11:30:01,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:01,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 11:30:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:01,999 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 11:30:02,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:30:02,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967532000] [2022-12-13 11:30:02,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967532000] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:30:02,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:30:02,000 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:30:02,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128050083] [2022-12-13 11:30:02,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:30:02,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:30:02,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:30:02,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:30:02,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:30:02,001 INFO L87 Difference]: Start difference. First operand 1563 states and 2057 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 11:30:02,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:30:02,476 INFO L93 Difference]: Finished difference Result 3994 states and 5308 transitions. [2022-12-13 11:30:02,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:30:02,476 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2022-12-13 11:30:02,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:30:02,493 INFO L225 Difference]: With dead ends: 3994 [2022-12-13 11:30:02,493 INFO L226 Difference]: Without dead ends: 2748 [2022-12-13 11:30:02,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:30:02,497 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 383 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:30:02,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 1102 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:30:02,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2022-12-13 11:30:02,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 2452. [2022-12-13 11:30:02,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 1845 states have (on average 1.313821138211382) internal successors, (2424), 1872 states have internal predecessors, (2424), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2022-12-13 11:30:02,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 3212 transitions. [2022-12-13 11:30:02,778 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 3212 transitions. Word has length 101 [2022-12-13 11:30:02,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:30:02,778 INFO L495 AbstractCegarLoop]: Abstraction has 2452 states and 3212 transitions. [2022-12-13 11:30:02,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 11:30:02,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 3212 transitions. [2022-12-13 11:30:02,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 11:30:02,779 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:30:02,780 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:30:02,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 11:30:02,780 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:30:02,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:30:02,780 INFO L85 PathProgramCache]: Analyzing trace with hash -151110586, now seen corresponding path program 1 times [2022-12-13 11:30:02,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:30:02,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922571993] [2022-12-13 11:30:02,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:02,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:30:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:02,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:30:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:02,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 11:30:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:02,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 11:30:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:02,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 11:30:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:02,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 11:30:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:02,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 11:30:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:02,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:30:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:02,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:30:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:02,819 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 11:30:02,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:30:02,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922571993] [2022-12-13 11:30:02,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922571993] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:30:02,819 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:30:02,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:30:02,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802156565] [2022-12-13 11:30:02,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:30:02,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:30:02,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:30:02,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:30:02,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:30:02,821 INFO L87 Difference]: Start difference. First operand 2452 states and 3212 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 11:30:03,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:30:03,381 INFO L93 Difference]: Finished difference Result 5878 states and 8060 transitions. [2022-12-13 11:30:03,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:30:03,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2022-12-13 11:30:03,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:30:03,393 INFO L225 Difference]: With dead ends: 5878 [2022-12-13 11:30:03,393 INFO L226 Difference]: Without dead ends: 3634 [2022-12-13 11:30:03,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:30:03,397 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 123 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:30:03,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 614 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:30:03,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2022-12-13 11:30:03,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 2455. [2022-12-13 11:30:03,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 1848 states have (on average 1.3133116883116882) internal successors, (2427), 1875 states have internal predecessors, (2427), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2022-12-13 11:30:03,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 3215 transitions. [2022-12-13 11:30:03,657 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 3215 transitions. Word has length 101 [2022-12-13 11:30:03,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:30:03,658 INFO L495 AbstractCegarLoop]: Abstraction has 2455 states and 3215 transitions. [2022-12-13 11:30:03,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 11:30:03,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 3215 transitions. [2022-12-13 11:30:03,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 11:30:03,659 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:30:03,659 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:30:03,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 11:30:03,659 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:30:03,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:30:03,660 INFO L85 PathProgramCache]: Analyzing trace with hash -341042115, now seen corresponding path program 1 times [2022-12-13 11:30:03,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:30:03,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487211636] [2022-12-13 11:30:03,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:03,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:30:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:03,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:30:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:03,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 11:30:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:03,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 11:30:03,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:03,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 11:30:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:03,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 11:30:03,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:03,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 11:30:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:03,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 11:30:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:03,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 11:30:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:03,718 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 11:30:03,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:30:03,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487211636] [2022-12-13 11:30:03,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487211636] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:30:03,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:30:03,718 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:30:03,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923556350] [2022-12-13 11:30:03,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:30:03,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:30:03,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:30:03,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:30:03,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:30:03,720 INFO L87 Difference]: Start difference. First operand 2455 states and 3215 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 11:30:04,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:30:04,292 INFO L93 Difference]: Finished difference Result 5913 states and 7804 transitions. [2022-12-13 11:30:04,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:30:04,293 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2022-12-13 11:30:04,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:30:04,306 INFO L225 Difference]: With dead ends: 5913 [2022-12-13 11:30:04,306 INFO L226 Difference]: Without dead ends: 3896 [2022-12-13 11:30:04,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:30:04,311 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 368 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:30:04,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 1087 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:30:04,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3896 states. [2022-12-13 11:30:04,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3896 to 3376. [2022-12-13 11:30:04,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3376 states, 2530 states have (on average 1.3094861660079051) internal successors, (3313), 2567 states have internal predecessors, (3313), 551 states have call successors, (551), 294 states have call predecessors, (551), 294 states have return successors, (551), 514 states have call predecessors, (551), 551 states have call successors, (551) [2022-12-13 11:30:04,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 4415 transitions. [2022-12-13 11:30:04,656 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 4415 transitions. Word has length 101 [2022-12-13 11:30:04,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:30:04,656 INFO L495 AbstractCegarLoop]: Abstraction has 3376 states and 4415 transitions. [2022-12-13 11:30:04,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 11:30:04,657 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 4415 transitions. [2022-12-13 11:30:04,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 11:30:04,658 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:30:04,658 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:30:04,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 11:30:04,658 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:30:04,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:30:04,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1342850110, now seen corresponding path program 1 times [2022-12-13 11:30:04,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:30:04,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862011217] [2022-12-13 11:30:04,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:04,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:30:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:04,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:30:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:04,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 11:30:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:04,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 11:30:04,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:04,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 11:30:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:04,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 11:30:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:04,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 11:30:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:04,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 11:30:04,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:04,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 11:30:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:04,743 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 11:30:04,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:30:04,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862011217] [2022-12-13 11:30:04,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862011217] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:30:04,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:30:04,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:30:04,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930385528] [2022-12-13 11:30:04,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:30:04,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:30:04,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:30:04,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:30:04,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:30:04,745 INFO L87 Difference]: Start difference. First operand 3376 states and 4415 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 11:30:05,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:30:05,252 INFO L93 Difference]: Finished difference Result 7048 states and 9438 transitions. [2022-12-13 11:30:05,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:30:05,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2022-12-13 11:30:05,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:30:05,265 INFO L225 Difference]: With dead ends: 7048 [2022-12-13 11:30:05,265 INFO L226 Difference]: Without dead ends: 3744 [2022-12-13 11:30:05,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:30:05,268 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 262 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:30:05,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 766 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:30:05,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2022-12-13 11:30:05,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 2995. [2022-12-13 11:30:05,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2995 states, 2226 states have (on average 1.3144654088050314) internal successors, (2926), 2250 states have internal predecessors, (2926), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2022-12-13 11:30:05,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 3930 transitions. [2022-12-13 11:30:05,611 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 3930 transitions. Word has length 102 [2022-12-13 11:30:05,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:30:05,611 INFO L495 AbstractCegarLoop]: Abstraction has 2995 states and 3930 transitions. [2022-12-13 11:30:05,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 11:30:05,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 3930 transitions. [2022-12-13 11:30:05,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 11:30:05,612 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:30:05,612 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:30:05,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 11:30:05,612 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:30:05,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:30:05,613 INFO L85 PathProgramCache]: Analyzing trace with hash 687578534, now seen corresponding path program 1 times [2022-12-13 11:30:05,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:30:05,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895879269] [2022-12-13 11:30:05,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:05,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:30:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:05,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:30:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:05,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 11:30:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:05,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 11:30:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:05,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 11:30:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:05,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 11:30:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:05,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 11:30:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:05,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 11:30:05,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:05,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 11:30:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 11:30:05,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:30:05,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895879269] [2022-12-13 11:30:05,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895879269] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:30:05,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:30:05,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 11:30:05,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25397629] [2022-12-13 11:30:05,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:30:05,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 11:30:05,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:30:05,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 11:30:05,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:30:05,651 INFO L87 Difference]: Start difference. First operand 2995 states and 3930 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 11:30:06,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:30:06,164 INFO L93 Difference]: Finished difference Result 6512 states and 8764 transitions. [2022-12-13 11:30:06,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 11:30:06,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2022-12-13 11:30:06,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:30:06,174 INFO L225 Difference]: With dead ends: 6512 [2022-12-13 11:30:06,175 INFO L226 Difference]: Without dead ends: 3698 [2022-12-13 11:30:06,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 11:30:06,178 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 123 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:30:06,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 601 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:30:06,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2022-12-13 11:30:06,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3002. [2022-12-13 11:30:06,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3002 states, 2233 states have (on average 1.3134796238244515) internal successors, (2933), 2257 states have internal predecessors, (2933), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2022-12-13 11:30:06,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3002 states to 3002 states and 3937 transitions. [2022-12-13 11:30:06,539 INFO L78 Accepts]: Start accepts. Automaton has 3002 states and 3937 transitions. Word has length 104 [2022-12-13 11:30:06,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:30:06,540 INFO L495 AbstractCegarLoop]: Abstraction has 3002 states and 3937 transitions. [2022-12-13 11:30:06,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 11:30:06,540 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states and 3937 transitions. [2022-12-13 11:30:06,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 11:30:06,541 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:30:06,541 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:30:06,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 11:30:06,541 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:30:06,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:30:06,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1642694862, now seen corresponding path program 1 times [2022-12-13 11:30:06,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:30:06,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177222789] [2022-12-13 11:30:06,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:06,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:30:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:06,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:30:06,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:06,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 11:30:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:06,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 11:30:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:06,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 11:30:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:06,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 11:30:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:06,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 11:30:06,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:06,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 11:30:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:06,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 11:30:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:06,636 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 11:30:06,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:30:06,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177222789] [2022-12-13 11:30:06,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177222789] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:30:06,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:30:06,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:30:06,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270343697] [2022-12-13 11:30:06,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:30:06,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:30:06,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:30:06,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:30:06,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:30:06,638 INFO L87 Difference]: Start difference. First operand 3002 states and 3937 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 11:30:07,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:30:07,090 INFO L93 Difference]: Finished difference Result 6499 states and 8755 transitions. [2022-12-13 11:30:07,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:30:07,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2022-12-13 11:30:07,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:30:07,099 INFO L225 Difference]: With dead ends: 6499 [2022-12-13 11:30:07,099 INFO L226 Difference]: Without dead ends: 3616 [2022-12-13 11:30:07,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:30:07,102 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 204 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:30:07,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 764 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:30:07,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3616 states. [2022-12-13 11:30:07,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 2759. [2022-12-13 11:30:07,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2759 states, 2049 states have (on average 1.3128355295265983) internal successors, (2690), 2068 states have internal predecessors, (2690), 464 states have call successors, (464), 245 states have call predecessors, (464), 245 states have return successors, (464), 445 states have call predecessors, (464), 464 states have call successors, (464) [2022-12-13 11:30:07,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 3618 transitions. [2022-12-13 11:30:07,444 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 3618 transitions. Word has length 104 [2022-12-13 11:30:07,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:30:07,444 INFO L495 AbstractCegarLoop]: Abstraction has 2759 states and 3618 transitions. [2022-12-13 11:30:07,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 11:30:07,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 3618 transitions. [2022-12-13 11:30:07,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-12-13 11:30:07,449 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:30:07,449 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:30:07,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 11:30:07,449 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:30:07,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:30:07,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2091605457, now seen corresponding path program 1 times [2022-12-13 11:30:07,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:30:07,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720292396] [2022-12-13 11:30:07,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:07,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:30:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:07,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:30:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:07,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 11:30:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:07,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 11:30:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:07,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 11:30:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:07,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 11:30:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:07,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 11:30:07,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:07,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 11:30:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:07,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 11:30:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:07,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 11:30:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:07,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 11:30:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:07,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 11:30:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:07,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 11:30:07,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:07,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 11:30:07,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:07,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 11:30:07,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:07,655 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-12-13 11:30:07,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:30:07,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720292396] [2022-12-13 11:30:07,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720292396] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:30:07,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256654838] [2022-12-13 11:30:07,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:07,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:30:07,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:30:07,657 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:30:07,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 11:30:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:07,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 11:30:07,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:30:07,959 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 61 proven. 4 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 11:30:07,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:30:08,074 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-12-13 11:30:08,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256654838] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:30:08,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:30:08,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-12-13 11:30:08,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921748645] [2022-12-13 11:30:08,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:30:08,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 11:30:08,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:30:08,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 11:30:08,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:30:08,077 INFO L87 Difference]: Start difference. First operand 2759 states and 3618 transitions. Second operand has 13 states, 13 states have (on average 15.23076923076923) internal successors, (198), 12 states have internal predecessors, (198), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-12-13 11:30:11,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:30:11,435 INFO L93 Difference]: Finished difference Result 9030 states and 12680 transitions. [2022-12-13 11:30:11,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 11:30:11,436 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 15.23076923076923) internal successors, (198), 12 states have internal predecessors, (198), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 153 [2022-12-13 11:30:11,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:30:11,448 INFO L225 Difference]: With dead ends: 9030 [2022-12-13 11:30:11,449 INFO L226 Difference]: Without dead ends: 6521 [2022-12-13 11:30:11,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 335 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=383, Invalid=1509, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 11:30:11,453 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 3178 mSDsluCounter, 2173 mSDsCounter, 0 mSdLazyCounter, 1432 mSolverCounterSat, 1086 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3178 SdHoareTripleChecker+Valid, 2451 SdHoareTripleChecker+Invalid, 2518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1086 IncrementalHoareTripleChecker+Valid, 1432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:30:11,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3178 Valid, 2451 Invalid, 2518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1086 Valid, 1432 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 11:30:11,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6521 states. [2022-12-13 11:30:11,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6521 to 3484. [2022-12-13 11:30:11,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3484 states, 2595 states have (on average 1.3044315992292872) internal successors, (3385), 2619 states have internal predecessors, (3385), 575 states have call successors, (575), 313 states have call predecessors, (575), 313 states have return successors, (575), 551 states have call predecessors, (575), 575 states have call successors, (575) [2022-12-13 11:30:11,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3484 states to 3484 states and 4535 transitions. [2022-12-13 11:30:11,992 INFO L78 Accepts]: Start accepts. Automaton has 3484 states and 4535 transitions. Word has length 153 [2022-12-13 11:30:11,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:30:11,993 INFO L495 AbstractCegarLoop]: Abstraction has 3484 states and 4535 transitions. [2022-12-13 11:30:11,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.23076923076923) internal successors, (198), 12 states have internal predecessors, (198), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2022-12-13 11:30:11,993 INFO L276 IsEmpty]: Start isEmpty. Operand 3484 states and 4535 transitions. [2022-12-13 11:30:11,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-12-13 11:30:11,995 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:30:11,995 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:30:12,001 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 11:30:12,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 11:30:12,196 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:30:12,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:30:12,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1525956170, now seen corresponding path program 1 times [2022-12-13 11:30:12,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:30:12,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851574722] [2022-12-13 11:30:12,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:12,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:30:12,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:12,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:30:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:12,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:30:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:12,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:30:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:12,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 11:30:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:12,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 11:30:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:12,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 11:30:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:12,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 11:30:12,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:12,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 11:30:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:12,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:30:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:12,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 11:30:12,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:12,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 11:30:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:12,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 11:30:12,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:12,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 11:30:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:12,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 11:30:12,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:12,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 11:30:12,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:12,551 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-12-13 11:30:12,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:30:12,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851574722] [2022-12-13 11:30:12,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851574722] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:30:12,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580940034] [2022-12-13 11:30:12,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:12,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:30:12,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:30:12,553 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:30:12,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 11:30:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:12,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 11:30:12,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:30:12,858 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 32 proven. 47 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 11:30:12,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:30:13,014 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 11 proven. 20 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-13 11:30:13,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580940034] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:30:13,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:30:13,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-12-13 11:30:13,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950825546] [2022-12-13 11:30:13,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:30:13,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 11:30:13,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:30:13,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 11:30:13,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-13 11:30:13,017 INFO L87 Difference]: Start difference. First operand 3484 states and 4535 transitions. Second operand has 16 states, 16 states have (on average 12.875) internal successors, (206), 14 states have internal predecessors, (206), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) [2022-12-13 11:30:21,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:30:21,261 INFO L93 Difference]: Finished difference Result 16121 states and 21978 transitions. [2022-12-13 11:30:21,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-12-13 11:30:21,262 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.875) internal successors, (206), 14 states have internal predecessors, (206), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) Word has length 162 [2022-12-13 11:30:21,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:30:21,288 INFO L225 Difference]: With dead ends: 16121 [2022-12-13 11:30:21,288 INFO L226 Difference]: Without dead ends: 12917 [2022-12-13 11:30:21,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 410 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5084 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1835, Invalid=12207, Unknown=0, NotChecked=0, Total=14042 [2022-12-13 11:30:21,296 INFO L413 NwaCegarLoop]: 1417 mSDtfsCounter, 5868 mSDsluCounter, 11863 mSDsCounter, 0 mSdLazyCounter, 5823 mSolverCounterSat, 3820 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5868 SdHoareTripleChecker+Valid, 13280 SdHoareTripleChecker+Invalid, 9643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3820 IncrementalHoareTripleChecker+Valid, 5823 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:30:21,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5868 Valid, 13280 Invalid, 9643 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3820 Valid, 5823 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 11:30:21,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12917 states. [2022-12-13 11:30:22,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12917 to 6123. [2022-12-13 11:30:22,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6123 states, 4566 states have (on average 1.307928164695576) internal successors, (5972), 4607 states have internal predecessors, (5972), 1005 states have call successors, (1005), 551 states have call predecessors, (1005), 551 states have return successors, (1005), 964 states have call predecessors, (1005), 1005 states have call successors, (1005) [2022-12-13 11:30:22,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6123 states to 6123 states and 7982 transitions. [2022-12-13 11:30:22,435 INFO L78 Accepts]: Start accepts. Automaton has 6123 states and 7982 transitions. Word has length 162 [2022-12-13 11:30:22,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:30:22,435 INFO L495 AbstractCegarLoop]: Abstraction has 6123 states and 7982 transitions. [2022-12-13 11:30:22,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.875) internal successors, (206), 14 states have internal predecessors, (206), 6 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (42), 8 states have call predecessors, (42), 6 states have call successors, (42) [2022-12-13 11:30:22,436 INFO L276 IsEmpty]: Start isEmpty. Operand 6123 states and 7982 transitions. [2022-12-13 11:30:22,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-12-13 11:30:22,445 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:30:22,445 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:30:22,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 11:30:22,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-13 11:30:22,646 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:30:22,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:30:22,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1398060454, now seen corresponding path program 1 times [2022-12-13 11:30:22,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:30:22,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250567049] [2022-12-13 11:30:22,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:22,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:30:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:22,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:30:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:22,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:30:22,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:22,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 11:30:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:22,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:30:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:22,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:30:22,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:22,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 11:30:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:22,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 11:30:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:22,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 11:30:22,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:22,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 11:30:22,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:22,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 11:30:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:22,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 11:30:22,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:22,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 11:30:22,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:22,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 11:30:22,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:22,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 11:30:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:22,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 11:30:22,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:22,769 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-12-13 11:30:22,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:30:22,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250567049] [2022-12-13 11:30:22,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250567049] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:30:22,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:30:22,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 11:30:22,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016654926] [2022-12-13 11:30:22,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:30:22,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:30:22,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:30:22,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:30:22,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:30:22,771 INFO L87 Difference]: Start difference. First operand 6123 states and 7982 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 11:30:25,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:30:25,458 INFO L93 Difference]: Finished difference Result 20263 states and 27126 transitions. [2022-12-13 11:30:25,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 11:30:25,459 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 164 [2022-12-13 11:30:25,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:30:25,485 INFO L225 Difference]: With dead ends: 20263 [2022-12-13 11:30:25,485 INFO L226 Difference]: Without dead ends: 14503 [2022-12-13 11:30:25,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:30:25,493 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 601 mSDsluCounter, 2089 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:30:25,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 2575 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:30:25,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14503 states. [2022-12-13 11:30:26,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14503 to 8315. [2022-12-13 11:30:26,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8315 states, 6152 states have (on average 1.3052665799739922) internal successors, (8030), 6210 states have internal predecessors, (8030), 1408 states have call successors, (1408), 754 states have call predecessors, (1408), 754 states have return successors, (1408), 1350 states have call predecessors, (1408), 1408 states have call successors, (1408) [2022-12-13 11:30:26,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8315 states to 8315 states and 10846 transitions. [2022-12-13 11:30:26,942 INFO L78 Accepts]: Start accepts. Automaton has 8315 states and 10846 transitions. Word has length 164 [2022-12-13 11:30:26,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:30:26,942 INFO L495 AbstractCegarLoop]: Abstraction has 8315 states and 10846 transitions. [2022-12-13 11:30:26,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-12-13 11:30:26,942 INFO L276 IsEmpty]: Start isEmpty. Operand 8315 states and 10846 transitions. [2022-12-13 11:30:26,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 11:30:26,948 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:30:26,948 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:30:26,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-12-13 11:30:26,948 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:30:26,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:30:26,948 INFO L85 PathProgramCache]: Analyzing trace with hash -554035669, now seen corresponding path program 1 times [2022-12-13 11:30:26,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:30:26,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507029621] [2022-12-13 11:30:26,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:26,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:30:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:27,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:30:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:27,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:30:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:27,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 11:30:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:27,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:30:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:27,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:30:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:27,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 11:30:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:27,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 11:30:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:27,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 11:30:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:27,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 11:30:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:27,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 11:30:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:27,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 11:30:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:27,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 11:30:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:27,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-12-13 11:30:27,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:27,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-12-13 11:30:27,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:27,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-12-13 11:30:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:27,158 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-13 11:30:27,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:30:27,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507029621] [2022-12-13 11:30:27,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507029621] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:30:27,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976975510] [2022-12-13 11:30:27,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:27,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:30:27,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:30:27,160 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:30:27,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 11:30:27,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:27,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 11:30:27,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:30:27,338 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 49 proven. 6 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 11:30:27,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:30:27,399 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-12-13 11:30:27,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976975510] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 11:30:27,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 11:30:27,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7] total 13 [2022-12-13 11:30:27,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131168268] [2022-12-13 11:30:27,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:30:27,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 11:30:27,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:30:27,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 11:30:27,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:30:27,401 INFO L87 Difference]: Start difference. First operand 8315 states and 10846 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 11:30:28,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:30:28,339 INFO L93 Difference]: Finished difference Result 13597 states and 17788 transitions. [2022-12-13 11:30:28,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:30:28,340 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) Word has length 166 [2022-12-13 11:30:28,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:30:28,349 INFO L225 Difference]: With dead ends: 13597 [2022-12-13 11:30:28,349 INFO L226 Difference]: Without dead ends: 5478 [2022-12-13 11:30:28,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:30:28,358 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 0 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:30:28,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 983 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:30:28,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5478 states. [2022-12-13 11:30:29,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5478 to 5246. [2022-12-13 11:30:29,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5246 states, 3884 states have (on average 1.304582904222451) internal successors, (5067), 3918 states have internal predecessors, (5067), 891 states have call successors, (891), 470 states have call predecessors, (891), 470 states have return successors, (891), 857 states have call predecessors, (891), 891 states have call successors, (891) [2022-12-13 11:30:29,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5246 states to 5246 states and 6849 transitions. [2022-12-13 11:30:29,109 INFO L78 Accepts]: Start accepts. Automaton has 5246 states and 6849 transitions. Word has length 166 [2022-12-13 11:30:29,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:30:29,109 INFO L495 AbstractCegarLoop]: Abstraction has 5246 states and 6849 transitions. [2022-12-13 11:30:29,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 3 states have call successors, (14) [2022-12-13 11:30:29,109 INFO L276 IsEmpty]: Start isEmpty. Operand 5246 states and 6849 transitions. [2022-12-13 11:30:29,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-12-13 11:30:29,113 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:30:29,113 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:30:29,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 11:30:29,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-12-13 11:30:29,315 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:30:29,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:30:29,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1076807478, now seen corresponding path program 1 times [2022-12-13 11:30:29,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:30:29,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923539325] [2022-12-13 11:30:29,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:29,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:30:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:29,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:30:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:29,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:30:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:29,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 11:30:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:29,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:30:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:29,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:30:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:29,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 11:30:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:29,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 11:30:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:29,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 11:30:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:29,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 11:30:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:29,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 11:30:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:29,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 11:30:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:29,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 11:30:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:29,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 11:30:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:29,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-12-13 11:30:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:29,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 11:30:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:29,626 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-13 11:30:29,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:30:29,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923539325] [2022-12-13 11:30:29,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923539325] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:30:29,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608930577] [2022-12-13 11:30:29,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:29,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:30:29,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:30:29,627 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:30:29,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 11:30:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:29,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 11:30:29,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:30:30,273 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 59 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 11:30:30,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:30:30,632 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-13 11:30:30,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608930577] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:30:30,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:30:30,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 8] total 21 [2022-12-13 11:30:30,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891284932] [2022-12-13 11:30:30,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:30:30,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-13 11:30:30,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:30:30,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-13 11:30:30,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2022-12-13 11:30:30,635 INFO L87 Difference]: Start difference. First operand 5246 states and 6849 transitions. Second operand has 21 states, 21 states have (on average 12.904761904761905) internal successors, (271), 21 states have internal predecessors, (271), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) [2022-12-13 11:30:56,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:30:56,775 INFO L93 Difference]: Finished difference Result 27469 states and 38974 transitions. [2022-12-13 11:30:56,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 273 states. [2022-12-13 11:30:56,777 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 12.904761904761905) internal successors, (271), 21 states have internal predecessors, (271), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) Word has length 167 [2022-12-13 11:30:56,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:30:56,813 INFO L225 Difference]: With dead ends: 27469 [2022-12-13 11:30:56,813 INFO L226 Difference]: Without dead ends: 22476 [2022-12-13 11:30:56,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 375 SyntacticMatches, 1 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36381 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=8921, Invalid=73735, Unknown=0, NotChecked=0, Total=82656 [2022-12-13 11:30:56,830 INFO L413 NwaCegarLoop]: 1219 mSDtfsCounter, 6342 mSDsluCounter, 6959 mSDsCounter, 0 mSdLazyCounter, 9031 mSolverCounterSat, 5618 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6342 SdHoareTripleChecker+Valid, 8178 SdHoareTripleChecker+Invalid, 14649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5618 IncrementalHoareTripleChecker+Valid, 9031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-12-13 11:30:56,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6342 Valid, 8178 Invalid, 14649 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5618 Valid, 9031 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-12-13 11:30:56,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22476 states. [2022-12-13 11:30:58,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22476 to 8807. [2022-12-13 11:30:58,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8807 states, 6608 states have (on average 1.3053874092009685) internal successors, (8626), 6661 states have internal predecessors, (8626), 1422 states have call successors, (1422), 776 states have call predecessors, (1422), 776 states have return successors, (1422), 1369 states have call predecessors, (1422), 1422 states have call successors, (1422) [2022-12-13 11:30:58,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8807 states to 8807 states and 11470 transitions. [2022-12-13 11:30:58,654 INFO L78 Accepts]: Start accepts. Automaton has 8807 states and 11470 transitions. Word has length 167 [2022-12-13 11:30:58,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:30:58,654 INFO L495 AbstractCegarLoop]: Abstraction has 8807 states and 11470 transitions. [2022-12-13 11:30:58,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 12.904761904761905) internal successors, (271), 21 states have internal predecessors, (271), 9 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 9 states have call predecessors, (40), 9 states have call successors, (40) [2022-12-13 11:30:58,654 INFO L276 IsEmpty]: Start isEmpty. Operand 8807 states and 11470 transitions. [2022-12-13 11:30:58,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-12-13 11:30:58,659 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:30:58,660 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:30:58,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 11:30:58,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-12-13 11:30:58,861 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:30:58,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:30:58,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1131228575, now seen corresponding path program 1 times [2022-12-13 11:30:58,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:30:58,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447860115] [2022-12-13 11:30:58,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:58,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:30:58,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:59,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:30:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:59,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:30:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:59,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 11:30:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:59,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:30:59,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:59,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:30:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:59,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 11:30:59,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:59,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 11:30:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:59,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 11:30:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:59,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 11:30:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:59,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 11:30:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:59,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 11:30:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:59,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 11:30:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:59,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 11:30:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:59,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-12-13 11:30:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:59,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 11:30:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:59,447 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 25 proven. 5 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-13 11:30:59,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:30:59,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447860115] [2022-12-13 11:30:59,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447860115] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:30:59,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506470250] [2022-12-13 11:30:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:30:59,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:30:59,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:30:59,449 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:30:59,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 11:30:59,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:30:59,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-13 11:30:59,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:31:00,217 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 69 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 11:31:00,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:31:00,776 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-13 11:31:00,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506470250] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:31:00,777 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:31:00,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 25 [2022-12-13 11:31:00,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373216371] [2022-12-13 11:31:00,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:31:00,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 11:31:00,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:00,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 11:31:00,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2022-12-13 11:31:00,779 INFO L87 Difference]: Start difference. First operand 8807 states and 11470 transitions. Second operand has 25 states, 25 states have (on average 10.36) internal successors, (259), 25 states have internal predecessors, (259), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2022-12-13 11:31:12,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:31:12,820 INFO L93 Difference]: Finished difference Result 22897 states and 30837 transitions. [2022-12-13 11:31:12,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-12-13 11:31:12,821 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.36) internal successors, (259), 25 states have internal predecessors, (259), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 167 [2022-12-13 11:31:12,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:31:12,844 INFO L225 Difference]: With dead ends: 22897 [2022-12-13 11:31:12,844 INFO L226 Difference]: Without dead ends: 14350 [2022-12-13 11:31:12,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 356 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2563 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=1245, Invalid=7685, Unknown=0, NotChecked=0, Total=8930 [2022-12-13 11:31:12,853 INFO L413 NwaCegarLoop]: 793 mSDtfsCounter, 2344 mSDsluCounter, 5478 mSDsCounter, 0 mSdLazyCounter, 4186 mSolverCounterSat, 1010 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2344 SdHoareTripleChecker+Valid, 6271 SdHoareTripleChecker+Invalid, 5196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1010 IncrementalHoareTripleChecker+Valid, 4186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:31:12,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2344 Valid, 6271 Invalid, 5196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1010 Valid, 4186 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-12-13 11:31:12,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14350 states. [2022-12-13 11:31:15,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14350 to 9762. [2022-12-13 11:31:15,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9762 states, 7335 states have (on average 1.3015678254942058) internal successors, (9547), 7394 states have internal predecessors, (9547), 1562 states have call successors, (1562), 864 states have call predecessors, (1562), 864 states have return successors, (1562), 1503 states have call predecessors, (1562), 1562 states have call successors, (1562) [2022-12-13 11:31:15,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9762 states to 9762 states and 12671 transitions. [2022-12-13 11:31:15,020 INFO L78 Accepts]: Start accepts. Automaton has 9762 states and 12671 transitions. Word has length 167 [2022-12-13 11:31:15,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:31:15,020 INFO L495 AbstractCegarLoop]: Abstraction has 9762 states and 12671 transitions. [2022-12-13 11:31:15,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.36) internal successors, (259), 25 states have internal predecessors, (259), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2022-12-13 11:31:15,020 INFO L276 IsEmpty]: Start isEmpty. Operand 9762 states and 12671 transitions. [2022-12-13 11:31:15,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-12-13 11:31:15,025 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:31:15,025 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:31:15,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 11:31:15,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:31:15,226 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:31:15,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:15,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1406110508, now seen corresponding path program 1 times [2022-12-13 11:31:15,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:15,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925179306] [2022-12-13 11:31:15,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:15,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:15,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:31:15,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:15,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:31:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:15,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:31:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:15,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 11:31:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:15,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 11:31:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:15,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 11:31:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:15,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 11:31:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:15,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 11:31:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:15,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 11:31:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:15,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:31:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:15,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 11:31:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:15,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 11:31:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:15,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 11:31:15,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:15,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 11:31:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:15,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 11:31:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:15,389 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-12-13 11:31:15,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:15,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925179306] [2022-12-13 11:31:15,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925179306] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:31:15,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354408915] [2022-12-13 11:31:15,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:15,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:31:15,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:31:15,391 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:31:15,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 11:31:15,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:15,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 11:31:15,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:31:15,632 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 8 proven. 90 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 11:31:15,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:31:15,748 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 31 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-12-13 11:31:15,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354408915] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:31:15,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:31:15,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2022-12-13 11:31:15,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701874825] [2022-12-13 11:31:15,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:31:15,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 11:31:15,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:15,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 11:31:15,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-13 11:31:15,750 INFO L87 Difference]: Start difference. First operand 9762 states and 12671 transitions. Second operand has 10 states, 10 states have (on average 15.5) internal successors, (155), 9 states have internal predecessors, (155), 4 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-12-13 11:31:20,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:31:20,217 INFO L93 Difference]: Finished difference Result 27462 states and 35780 transitions. [2022-12-13 11:31:20,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 11:31:20,218 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 9 states have internal predecessors, (155), 4 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) Word has length 169 [2022-12-13 11:31:20,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:31:20,244 INFO L225 Difference]: With dead ends: 27462 [2022-12-13 11:31:20,245 INFO L226 Difference]: Without dead ends: 18049 [2022-12-13 11:31:20,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 363 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-12-13 11:31:20,255 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 497 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 2343 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:31:20,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 2343 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:31:20,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18049 states. [2022-12-13 11:31:23,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18049 to 13085. [2022-12-13 11:31:23,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13085 states, 9875 states have (on average 1.2836455696202531) internal successors, (12676), 9963 states have internal predecessors, (12676), 2039 states have call successors, (2039), 1170 states have call predecessors, (2039), 1170 states have return successors, (2039), 1951 states have call predecessors, (2039), 2039 states have call successors, (2039) [2022-12-13 11:31:23,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13085 states to 13085 states and 16754 transitions. [2022-12-13 11:31:23,213 INFO L78 Accepts]: Start accepts. Automaton has 13085 states and 16754 transitions. Word has length 169 [2022-12-13 11:31:23,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:31:23,213 INFO L495 AbstractCegarLoop]: Abstraction has 13085 states and 16754 transitions. [2022-12-13 11:31:23,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.5) internal successors, (155), 9 states have internal predecessors, (155), 4 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (31), 4 states have call predecessors, (31), 3 states have call successors, (31) [2022-12-13 11:31:23,213 INFO L276 IsEmpty]: Start isEmpty. Operand 13085 states and 16754 transitions. [2022-12-13 11:31:23,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-12-13 11:31:23,217 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:31:23,217 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:31:23,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 11:31:23,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:31:23,418 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:31:23,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:23,419 INFO L85 PathProgramCache]: Analyzing trace with hash -173853014, now seen corresponding path program 1 times [2022-12-13 11:31:23,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:23,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387622426] [2022-12-13 11:31:23,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:23,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:23,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:31:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:23,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:31:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:23,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 11:31:23,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:23,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:31:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:23,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:31:23,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:23,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 11:31:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:23,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 11:31:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:23,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 11:31:23,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:23,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 11:31:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:23,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 11:31:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:23,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 11:31:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:23,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 11:31:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:23,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 11:31:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:23,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 11:31:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:23,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-12-13 11:31:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:23,847 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-13 11:31:23,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:23,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387622426] [2022-12-13 11:31:23,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387622426] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:31:23,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908599417] [2022-12-13 11:31:23,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:23,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:31:23,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:31:23,848 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:31:23,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 11:31:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:23,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 40 conjunts are in the unsatisfiable core [2022-12-13 11:31:23,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:31:24,616 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 68 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 11:31:24,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:31:25,228 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-13 11:31:25,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908599417] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:31:25,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:31:25,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 25 [2022-12-13 11:31:25,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425625559] [2022-12-13 11:31:25,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:31:25,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 11:31:25,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:25,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 11:31:25,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2022-12-13 11:31:25,230 INFO L87 Difference]: Start difference. First operand 13085 states and 16754 transitions. Second operand has 25 states, 25 states have (on average 10.52) internal successors, (263), 25 states have internal predecessors, (263), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2022-12-13 11:31:38,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:31:38,510 INFO L93 Difference]: Finished difference Result 27623 states and 36929 transitions. [2022-12-13 11:31:38,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-12-13 11:31:38,510 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 10.52) internal successors, (263), 25 states have internal predecessors, (263), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 168 [2022-12-13 11:31:38,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:31:38,538 INFO L225 Difference]: With dead ends: 27623 [2022-12-13 11:31:38,538 INFO L226 Difference]: Without dead ends: 18506 [2022-12-13 11:31:38,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 358 SyntacticMatches, 2 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2404 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=1112, Invalid=6720, Unknown=0, NotChecked=0, Total=7832 [2022-12-13 11:31:38,548 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 2118 mSDsluCounter, 6894 mSDsCounter, 0 mSdLazyCounter, 4820 mSolverCounterSat, 1457 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2118 SdHoareTripleChecker+Valid, 7778 SdHoareTripleChecker+Invalid, 6277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1457 IncrementalHoareTripleChecker+Valid, 4820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:31:38,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2118 Valid, 7778 Invalid, 6277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1457 Valid, 4820 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 11:31:38,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18506 states. [2022-12-13 11:31:41,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18506 to 12552. [2022-12-13 11:31:41,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12552 states, 9498 states have (on average 1.2854285112655295) internal successors, (12209), 9578 states have internal predecessors, (12209), 1937 states have call successors, (1937), 1116 states have call predecessors, (1937), 1116 states have return successors, (1937), 1857 states have call predecessors, (1937), 1937 states have call successors, (1937) [2022-12-13 11:31:41,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12552 states to 12552 states and 16083 transitions. [2022-12-13 11:31:41,964 INFO L78 Accepts]: Start accepts. Automaton has 12552 states and 16083 transitions. Word has length 168 [2022-12-13 11:31:41,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:31:41,965 INFO L495 AbstractCegarLoop]: Abstraction has 12552 states and 16083 transitions. [2022-12-13 11:31:41,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 10.52) internal successors, (263), 25 states have internal predecessors, (263), 10 states have call successors, (41), 5 states have call predecessors, (41), 5 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2022-12-13 11:31:41,965 INFO L276 IsEmpty]: Start isEmpty. Operand 12552 states and 16083 transitions. [2022-12-13 11:31:41,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-12-13 11:31:41,968 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:31:41,968 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:31:41,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 11:31:42,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-12-13 11:31:42,170 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:31:42,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:42,171 INFO L85 PathProgramCache]: Analyzing trace with hash 26254598, now seen corresponding path program 1 times [2022-12-13 11:31:42,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:42,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838314338] [2022-12-13 11:31:42,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:42,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:42,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:31:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:42,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:31:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:42,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 11:31:42,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:42,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:31:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:42,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:31:42,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:42,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 11:31:42,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:42,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 11:31:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:42,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 11:31:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:42,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 11:31:42,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:42,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 11:31:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:42,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 11:31:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:42,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 11:31:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:42,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 11:31:42,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:42,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-12-13 11:31:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:42,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-12-13 11:31:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:42,351 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-13 11:31:42,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:42,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838314338] [2022-12-13 11:31:42,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838314338] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:31:42,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822708993] [2022-12-13 11:31:42,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:42,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:31:42,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:31:42,352 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:31:42,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 11:31:42,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:42,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 11:31:42,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:31:42,760 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 59 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 11:31:42,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:31:43,018 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-12-13 11:31:43,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822708993] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:31:43,019 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:31:43,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2022-12-13 11:31:43,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923349974] [2022-12-13 11:31:43,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:31:43,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 11:31:43,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:43,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 11:31:43,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-12-13 11:31:43,020 INFO L87 Difference]: Start difference. First operand 12552 states and 16083 transitions. Second operand has 20 states, 20 states have (on average 14.45) internal successors, (289), 19 states have internal predecessors, (289), 11 states have call successors, (40), 6 states have call predecessors, (40), 7 states have return successors, (39), 12 states have call predecessors, (39), 11 states have call successors, (39) [2022-12-13 11:31:55,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:31:55,520 INFO L93 Difference]: Finished difference Result 33868 states and 45717 transitions. [2022-12-13 11:31:55,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-13 11:31:55,520 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 14.45) internal successors, (289), 19 states have internal predecessors, (289), 11 states have call successors, (40), 6 states have call predecessors, (40), 7 states have return successors, (39), 12 states have call predecessors, (39), 11 states have call successors, (39) Word has length 169 [2022-12-13 11:31:55,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:31:55,554 INFO L225 Difference]: With dead ends: 33868 [2022-12-13 11:31:55,555 INFO L226 Difference]: Without dead ends: 21474 [2022-12-13 11:31:55,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 360 SyntacticMatches, 1 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2196 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1539, Invalid=5771, Unknown=0, NotChecked=0, Total=7310 [2022-12-13 11:31:55,567 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 2804 mSDsluCounter, 5582 mSDsCounter, 0 mSdLazyCounter, 4116 mSolverCounterSat, 1368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2804 SdHoareTripleChecker+Valid, 6218 SdHoareTripleChecker+Invalid, 5484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1368 IncrementalHoareTripleChecker+Valid, 4116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:31:55,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2804 Valid, 6218 Invalid, 5484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1368 Valid, 4116 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-12-13 11:31:55,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21474 states. [2022-12-13 11:31:58,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21474 to 12421. [2022-12-13 11:31:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12421 states, 9410 states have (on average 1.2731137088204039) internal successors, (11980), 9487 states have internal predecessors, (11980), 1906 states have call successors, (1906), 1104 states have call predecessors, (1906), 1104 states have return successors, (1906), 1829 states have call predecessors, (1906), 1906 states have call successors, (1906) [2022-12-13 11:31:58,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12421 states to 12421 states and 15792 transitions. [2022-12-13 11:31:58,862 INFO L78 Accepts]: Start accepts. Automaton has 12421 states and 15792 transitions. Word has length 169 [2022-12-13 11:31:58,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:31:58,862 INFO L495 AbstractCegarLoop]: Abstraction has 12421 states and 15792 transitions. [2022-12-13 11:31:58,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.45) internal successors, (289), 19 states have internal predecessors, (289), 11 states have call successors, (40), 6 states have call predecessors, (40), 7 states have return successors, (39), 12 states have call predecessors, (39), 11 states have call successors, (39) [2022-12-13 11:31:58,862 INFO L276 IsEmpty]: Start isEmpty. Operand 12421 states and 15792 transitions. [2022-12-13 11:31:58,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-12-13 11:31:58,865 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:31:58,865 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:31:58,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 11:31:59,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-13 11:31:59,067 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:31:59,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:31:59,068 INFO L85 PathProgramCache]: Analyzing trace with hash -848128133, now seen corresponding path program 1 times [2022-12-13 11:31:59,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:31:59,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427691018] [2022-12-13 11:31:59,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:31:59,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:31:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:59,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:31:59,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:59,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:31:59,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:59,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:31:59,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:59,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 11:31:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:59,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 11:31:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:59,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 11:31:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:59,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 11:31:59,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:59,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 11:31:59,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:59,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 11:31:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:59,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:31:59,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:59,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:31:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:59,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 11:31:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:59,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 11:31:59,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:59,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 11:31:59,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:59,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 11:31:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:59,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 11:31:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:59,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 11:31:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:31:59,223 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-12-13 11:31:59,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:31:59,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427691018] [2022-12-13 11:31:59,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427691018] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:31:59,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:31:59,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 11:31:59,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814692034] [2022-12-13 11:31:59,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:31:59,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:31:59,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:31:59,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:31:59,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:31:59,225 INFO L87 Difference]: Start difference. First operand 12421 states and 15792 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-13 11:32:06,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:32:06,578 INFO L93 Difference]: Finished difference Result 32366 states and 42174 transitions. [2022-12-13 11:32:06,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 11:32:06,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 179 [2022-12-13 11:32:06,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:32:06,613 INFO L225 Difference]: With dead ends: 32366 [2022-12-13 11:32:06,613 INFO L226 Difference]: Without dead ends: 22833 [2022-12-13 11:32:06,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:32:06,624 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 471 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 2377 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:32:06,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 2377 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:32:06,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22833 states. [2022-12-13 11:32:11,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22833 to 15928. [2022-12-13 11:32:11,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15928 states, 11952 states have (on average 1.2649765729585007) internal successors, (15119), 12066 states have internal predecessors, (15119), 2518 states have call successors, (2518), 1457 states have call predecessors, (2518), 1457 states have return successors, (2518), 2404 states have call predecessors, (2518), 2518 states have call successors, (2518) [2022-12-13 11:32:11,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15928 states to 15928 states and 20155 transitions. [2022-12-13 11:32:11,055 INFO L78 Accepts]: Start accepts. Automaton has 15928 states and 20155 transitions. Word has length 179 [2022-12-13 11:32:11,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:32:11,055 INFO L495 AbstractCegarLoop]: Abstraction has 15928 states and 20155 transitions. [2022-12-13 11:32:11,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-13 11:32:11,055 INFO L276 IsEmpty]: Start isEmpty. Operand 15928 states and 20155 transitions. [2022-12-13 11:32:11,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-12-13 11:32:11,062 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:32:11,062 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:32:11,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-12-13 11:32:11,063 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:32:11,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:32:11,063 INFO L85 PathProgramCache]: Analyzing trace with hash -2097807134, now seen corresponding path program 1 times [2022-12-13 11:32:11,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:32:11,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092449140] [2022-12-13 11:32:11,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:32:11,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:32:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:11,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:32:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:11,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:32:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:11,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:32:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:11,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 11:32:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:11,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 11:32:11,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:11,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 11:32:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:11,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 11:32:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:11,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 11:32:11,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:11,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 11:32:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:11,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 11:32:11,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:11,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 11:32:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:11,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 11:32:11,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:11,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 11:32:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:11,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 11:32:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:11,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 11:32:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:11,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-12-13 11:32:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:11,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-12-13 11:32:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:11,548 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-12-13 11:32:11,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:32:11,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092449140] [2022-12-13 11:32:11,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092449140] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:32:11,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315389560] [2022-12-13 11:32:11,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:32:11,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:32:11,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:32:11,549 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:32:11,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 11:32:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:11,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 11:32:11,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:32:11,774 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 68 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-12-13 11:32:11,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:32:11,867 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 25 proven. 8 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-12-13 11:32:11,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315389560] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:32:11,868 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:32:11,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2022-12-13 11:32:11,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614646036] [2022-12-13 11:32:11,868 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:32:11,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-13 11:32:11,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:32:11,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-13 11:32:11,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-12-13 11:32:11,870 INFO L87 Difference]: Start difference. First operand 15928 states and 20155 transitions. Second operand has 15 states, 15 states have (on average 13.333333333333334) internal successors, (200), 14 states have internal predecessors, (200), 6 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 7 states have call predecessors, (38), 6 states have call successors, (38) [2022-12-13 11:32:22,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:32:22,878 INFO L93 Difference]: Finished difference Result 40349 states and 53292 transitions. [2022-12-13 11:32:22,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-13 11:32:22,878 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 13.333333333333334) internal successors, (200), 14 states have internal predecessors, (200), 6 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 7 states have call predecessors, (38), 6 states have call successors, (38) Word has length 180 [2022-12-13 11:32:22,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:32:22,939 INFO L225 Difference]: With dead ends: 40349 [2022-12-13 11:32:22,939 INFO L226 Difference]: Without dead ends: 24601 [2022-12-13 11:32:22,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 398 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 677 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=375, Invalid=2277, Unknown=0, NotChecked=0, Total=2652 [2022-12-13 11:32:22,960 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 1552 mSDsluCounter, 6663 mSDsCounter, 0 mSdLazyCounter, 3789 mSolverCounterSat, 860 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 7481 SdHoareTripleChecker+Invalid, 4649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 860 IncrementalHoareTripleChecker+Valid, 3789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:32:22,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1552 Valid, 7481 Invalid, 4649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [860 Valid, 3789 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 11:32:22,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24601 states. [2022-12-13 11:32:27,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24601 to 16145. [2022-12-13 11:32:27,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16145 states, 12113 states have (on average 1.2645092049863782) internal successors, (15317), 12230 states have internal predecessors, (15317), 2550 states have call successors, (2550), 1481 states have call predecessors, (2550), 1481 states have return successors, (2550), 2433 states have call predecessors, (2550), 2550 states have call successors, (2550) [2022-12-13 11:32:27,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16145 states to 16145 states and 20417 transitions. [2022-12-13 11:32:27,656 INFO L78 Accepts]: Start accepts. Automaton has 16145 states and 20417 transitions. Word has length 180 [2022-12-13 11:32:27,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:32:27,656 INFO L495 AbstractCegarLoop]: Abstraction has 16145 states and 20417 transitions. [2022-12-13 11:32:27,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.333333333333334) internal successors, (200), 14 states have internal predecessors, (200), 6 states have call successors, (38), 4 states have call predecessors, (38), 6 states have return successors, (38), 7 states have call predecessors, (38), 6 states have call successors, (38) [2022-12-13 11:32:27,657 INFO L276 IsEmpty]: Start isEmpty. Operand 16145 states and 20417 transitions. [2022-12-13 11:32:27,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-12-13 11:32:27,661 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:32:27,661 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:32:27,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 11:32:27,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-12-13 11:32:27,863 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:32:27,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:32:27,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1449253258, now seen corresponding path program 1 times [2022-12-13 11:32:27,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:32:27,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640456600] [2022-12-13 11:32:27,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:32:27,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:32:27,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:28,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:32:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:28,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:32:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:28,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:32:28,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:28,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 11:32:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:28,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 11:32:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:28,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 11:32:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:28,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 11:32:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:28,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 11:32:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:28,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 11:32:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:28,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 11:32:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:28,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 11:32:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:28,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 11:32:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:28,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 11:32:28,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:28,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 11:32:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:28,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 11:32:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:28,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-12-13 11:32:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:28,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-12-13 11:32:28,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:28,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-12-13 11:32:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:28,073 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 21 proven. 13 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-12-13 11:32:28,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:32:28,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640456600] [2022-12-13 11:32:28,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640456600] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:32:28,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563753767] [2022-12-13 11:32:28,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:32:28,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:32:28,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:32:28,074 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:32:28,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 11:32:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:28,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 11:32:28,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:32:28,259 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-12-13 11:32:28,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:32:28,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563753767] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:32:28,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:32:28,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-12-13 11:32:28,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122558508] [2022-12-13 11:32:28,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:32:28,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:32:28,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:32:28,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:32:28,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-12-13 11:32:28,261 INFO L87 Difference]: Start difference. First operand 16145 states and 20417 transitions. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-13 11:32:35,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:32:35,023 INFO L93 Difference]: Finished difference Result 35823 states and 46499 transitions. [2022-12-13 11:32:35,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:32:35,024 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 188 [2022-12-13 11:32:35,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:32:35,055 INFO L225 Difference]: With dead ends: 35823 [2022-12-13 11:32:35,055 INFO L226 Difference]: Without dead ends: 20086 [2022-12-13 11:32:35,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-12-13 11:32:35,069 INFO L413 NwaCegarLoop]: 464 mSDtfsCounter, 608 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:32:35,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [608 Valid, 1814 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:32:35,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20086 states. [2022-12-13 11:32:39,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20086 to 16145. [2022-12-13 11:32:39,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16145 states, 12113 states have (on average 1.2572442830017336) internal successors, (15229), 12230 states have internal predecessors, (15229), 2550 states have call successors, (2550), 1481 states have call predecessors, (2550), 1481 states have return successors, (2550), 2433 states have call predecessors, (2550), 2550 states have call successors, (2550) [2022-12-13 11:32:39,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16145 states to 16145 states and 20329 transitions. [2022-12-13 11:32:39,664 INFO L78 Accepts]: Start accepts. Automaton has 16145 states and 20329 transitions. Word has length 188 [2022-12-13 11:32:39,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:32:39,664 INFO L495 AbstractCegarLoop]: Abstraction has 16145 states and 20329 transitions. [2022-12-13 11:32:39,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-12-13 11:32:39,664 INFO L276 IsEmpty]: Start isEmpty. Operand 16145 states and 20329 transitions. [2022-12-13 11:32:39,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-12-13 11:32:39,669 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:32:39,669 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:32:39,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 11:32:39,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-12-13 11:32:39,871 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:32:39,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:32:39,872 INFO L85 PathProgramCache]: Analyzing trace with hash -776127958, now seen corresponding path program 1 times [2022-12-13 11:32:39,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:32:39,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582025059] [2022-12-13 11:32:39,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:32:39,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:32:39,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:40,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:32:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:40,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:32:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:40,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 11:32:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:40,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:32:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:40,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:32:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:40,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 11:32:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:40,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 11:32:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:40,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 11:32:40,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:40,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 11:32:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:40,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 11:32:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:40,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:32:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:40,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 11:32:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:40,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 11:32:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:40,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-12-13 11:32:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:40,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-12-13 11:32:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:40,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-12-13 11:32:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:40,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-12-13 11:32:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:40,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-12-13 11:32:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:40,126 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 21 proven. 26 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-12-13 11:32:40,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:32:40,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582025059] [2022-12-13 11:32:40,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582025059] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:32:40,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629817676] [2022-12-13 11:32:40,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:32:40,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:32:40,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:32:40,128 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:32:40,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 11:32:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:40,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 812 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 11:32:40,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:32:40,419 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 62 proven. 60 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 11:32:40,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:32:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 21 proven. 26 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-12-13 11:32:40,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629817676] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:32:40,603 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:32:40,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-12-13 11:32:40,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857812763] [2022-12-13 11:32:40,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:32:40,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 11:32:40,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:32:40,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 11:32:40,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-12-13 11:32:40,605 INFO L87 Difference]: Start difference. First operand 16145 states and 20329 transitions. Second operand has 12 states, 12 states have (on average 15.833333333333334) internal successors, (190), 11 states have internal predecessors, (190), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-12-13 11:32:46,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:32:46,755 INFO L93 Difference]: Finished difference Result 27447 states and 34910 transitions. [2022-12-13 11:32:46,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 11:32:46,755 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 15.833333333333334) internal successors, (190), 11 states have internal predecessors, (190), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) Word has length 193 [2022-12-13 11:32:46,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:32:46,779 INFO L225 Difference]: With dead ends: 27447 [2022-12-13 11:32:46,780 INFO L226 Difference]: Without dead ends: 17685 [2022-12-13 11:32:46,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 419 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=535, Unknown=0, NotChecked=0, Total=702 [2022-12-13 11:32:46,790 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 1081 mSDsluCounter, 3548 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 4275 SdHoareTripleChecker+Invalid, 1115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:32:46,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 4275 Invalid, 1115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 11:32:46,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17685 states. [2022-12-13 11:32:51,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17685 to 16145. [2022-12-13 11:32:51,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16145 states, 12113 states have (on average 1.2543548253942045) internal successors, (15194), 12230 states have internal predecessors, (15194), 2550 states have call successors, (2550), 1481 states have call predecessors, (2550), 1481 states have return successors, (2550), 2433 states have call predecessors, (2550), 2550 states have call successors, (2550) [2022-12-13 11:32:51,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16145 states to 16145 states and 20294 transitions. [2022-12-13 11:32:51,269 INFO L78 Accepts]: Start accepts. Automaton has 16145 states and 20294 transitions. Word has length 193 [2022-12-13 11:32:51,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:32:51,269 INFO L495 AbstractCegarLoop]: Abstraction has 16145 states and 20294 transitions. [2022-12-13 11:32:51,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 15.833333333333334) internal successors, (190), 11 states have internal predecessors, (190), 5 states have call successors, (37), 4 states have call predecessors, (37), 7 states have return successors, (37), 6 states have call predecessors, (37), 5 states have call successors, (37) [2022-12-13 11:32:51,269 INFO L276 IsEmpty]: Start isEmpty. Operand 16145 states and 20294 transitions. [2022-12-13 11:32:51,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-12-13 11:32:51,274 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:32:51,274 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:32:51,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 11:32:51,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-12-13 11:32:51,475 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:32:51,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:32:51,476 INFO L85 PathProgramCache]: Analyzing trace with hash 259384864, now seen corresponding path program 1 times [2022-12-13 11:32:51,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:32:51,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831819167] [2022-12-13 11:32:51,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:32:51,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:32:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:51,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:32:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:51,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:32:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:51,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 11:32:51,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:51,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:32:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:51,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:32:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:51,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 11:32:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:51,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 11:32:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:51,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 11:32:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:51,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 11:32:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:51,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 11:32:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:51,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:32:51,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:51,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 11:32:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:51,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 11:32:51,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:51,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-12-13 11:32:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:51,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-12-13 11:32:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:51,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-12-13 11:32:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:51,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-12-13 11:32:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:51,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-12-13 11:32:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:32:51,694 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-12-13 11:32:51,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:32:51,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831819167] [2022-12-13 11:32:51,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831819167] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:32:51,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:32:51,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 11:32:51,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657059141] [2022-12-13 11:32:51,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:32:51,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:32:51,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:32:51,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:32:51,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 11:32:51,696 INFO L87 Difference]: Start difference. First operand 16145 states and 20294 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 11:32:57,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:32:57,719 INFO L93 Difference]: Finished difference Result 28236 states and 36368 transitions. [2022-12-13 11:32:57,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:32:57,720 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 193 [2022-12-13 11:32:57,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:32:57,746 INFO L225 Difference]: With dead ends: 28236 [2022-12-13 11:32:57,746 INFO L226 Difference]: Without dead ends: 18559 [2022-12-13 11:32:57,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:32:57,756 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 606 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 1907 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:32:57,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 1907 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:32:57,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18559 states. [2022-12-13 11:33:02,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18559 to 16138. [2022-12-13 11:33:02,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16138 states, 12106 states have (on average 1.2533454485379152) internal successors, (15173), 12223 states have internal predecessors, (15173), 2550 states have call successors, (2550), 1481 states have call predecessors, (2550), 1481 states have return successors, (2550), 2433 states have call predecessors, (2550), 2550 states have call successors, (2550) [2022-12-13 11:33:02,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16138 states to 16138 states and 20273 transitions. [2022-12-13 11:33:02,309 INFO L78 Accepts]: Start accepts. Automaton has 16138 states and 20273 transitions. Word has length 193 [2022-12-13 11:33:02,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:33:02,310 INFO L495 AbstractCegarLoop]: Abstraction has 16138 states and 20273 transitions. [2022-12-13 11:33:02,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 6 states have internal predecessors, (115), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 11:33:02,310 INFO L276 IsEmpty]: Start isEmpty. Operand 16138 states and 20273 transitions. [2022-12-13 11:33:02,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-12-13 11:33:02,314 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:33:02,314 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:33:02,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-12-13 11:33:02,314 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:33:02,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:33:02,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1547793542, now seen corresponding path program 1 times [2022-12-13 11:33:02,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:33:02,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931160133] [2022-12-13 11:33:02,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:02,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:33:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:02,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:33:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:02,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:33:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:02,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:33:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:02,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 11:33:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:02,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 11:33:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:02,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 11:33:02,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:02,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 11:33:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:02,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 11:33:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:02,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 11:33:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:02,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 11:33:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:02,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 11:33:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:02,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 11:33:02,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:02,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 11:33:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:02,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-12-13 11:33:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:02,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 11:33:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:02,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-12-13 11:33:02,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:02,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-12-13 11:33:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:02,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-12-13 11:33:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:02,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-12-13 11:33:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:02,480 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 21 proven. 13 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-12-13 11:33:02,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:33:02,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931160133] [2022-12-13 11:33:02,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931160133] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:33:02,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383846393] [2022-12-13 11:33:02,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:02,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:33:02,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:33:02,481 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:33:02,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 11:33:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:02,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 11:33:02,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:33:02,662 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 92 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-13 11:33:02,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:33:02,749 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-12-13 11:33:02,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383846393] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:33:02,749 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:33:02,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-12-13 11:33:02,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994924516] [2022-12-13 11:33:02,749 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:33:02,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 11:33:02,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:33:02,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 11:33:02,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:33:02,750 INFO L87 Difference]: Start difference. First operand 16138 states and 20273 transitions. Second operand has 13 states, 13 states have (on average 17.153846153846153) internal successors, (223), 12 states have internal predecessors, (223), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) [2022-12-13 11:33:15,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:33:15,607 INFO L93 Difference]: Finished difference Result 41839 states and 55371 transitions. [2022-12-13 11:33:15,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 11:33:15,609 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 17.153846153846153) internal successors, (223), 12 states have internal predecessors, (223), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) Word has length 196 [2022-12-13 11:33:15,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:33:15,658 INFO L225 Difference]: With dead ends: 41839 [2022-12-13 11:33:15,658 INFO L226 Difference]: Without dead ends: 26198 [2022-12-13 11:33:15,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 431 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=383, Invalid=1509, Unknown=0, NotChecked=0, Total=1892 [2022-12-13 11:33:15,675 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 2118 mSDsluCounter, 3715 mSDsCounter, 0 mSdLazyCounter, 1953 mSolverCounterSat, 1236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2118 SdHoareTripleChecker+Valid, 4328 SdHoareTripleChecker+Invalid, 3189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1236 IncrementalHoareTripleChecker+Valid, 1953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:33:15,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2118 Valid, 4328 Invalid, 3189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1236 Valid, 1953 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 11:33:15,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26198 states. [2022-12-13 11:33:20,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26198 to 16432. [2022-12-13 11:33:20,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16432 states, 12356 states have (on average 1.250566526383943) internal successors, (15452), 12472 states have internal predecessors, (15452), 2572 states have call successors, (2572), 1503 states have call predecessors, (2572), 1503 states have return successors, (2572), 2456 states have call predecessors, (2572), 2572 states have call successors, (2572) [2022-12-13 11:33:20,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16432 states to 16432 states and 20596 transitions. [2022-12-13 11:33:20,759 INFO L78 Accepts]: Start accepts. Automaton has 16432 states and 20596 transitions. Word has length 196 [2022-12-13 11:33:20,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:33:20,759 INFO L495 AbstractCegarLoop]: Abstraction has 16432 states and 20596 transitions. [2022-12-13 11:33:20,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 17.153846153846153) internal successors, (223), 12 states have internal predecessors, (223), 6 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (45), 7 states have call predecessors, (45), 6 states have call successors, (45) [2022-12-13 11:33:20,759 INFO L276 IsEmpty]: Start isEmpty. Operand 16432 states and 20596 transitions. [2022-12-13 11:33:20,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-12-13 11:33:20,763 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:33:20,763 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:33:20,768 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 11:33:20,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:33:20,964 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:33:20,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:33:20,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1158341999, now seen corresponding path program 1 times [2022-12-13 11:33:20,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:33:20,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995701194] [2022-12-13 11:33:20,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:20,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:33:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:21,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:33:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:21,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:33:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:21,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 11:33:21,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:21,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:33:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:21,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:33:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:21,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 11:33:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:21,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 11:33:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:21,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 11:33:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:21,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 11:33:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:21,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 11:33:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:21,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:33:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:21,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 11:33:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:21,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-12-13 11:33:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:21,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 11:33:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:21,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 11:33:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:21,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 11:33:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:21,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 11:33:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:21,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-12-13 11:33:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:21,074 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-12-13 11:33:21,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:33:21,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995701194] [2022-12-13 11:33:21,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995701194] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:33:21,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:33:21,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:33:21,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012327404] [2022-12-13 11:33:21,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:33:21,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:33:21,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:33:21,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:33:21,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:33:21,075 INFO L87 Difference]: Start difference. First operand 16432 states and 20596 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 11:33:26,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:33:26,520 INFO L93 Difference]: Finished difference Result 27727 states and 35165 transitions. [2022-12-13 11:33:26,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 11:33:26,520 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 195 [2022-12-13 11:33:26,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:33:26,547 INFO L225 Difference]: With dead ends: 27727 [2022-12-13 11:33:26,547 INFO L226 Difference]: Without dead ends: 17750 [2022-12-13 11:33:26,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:33:26,557 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 345 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 11:33:26,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 1057 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 11:33:26,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17750 states. [2022-12-13 11:33:31,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17750 to 17067. [2022-12-13 11:33:31,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17067 states, 12811 states have (on average 1.2509562095074545) internal successors, (16026), 12933 states have internal predecessors, (16026), 2687 states have call successors, (2687), 1568 states have call predecessors, (2687), 1568 states have return successors, (2687), 2565 states have call predecessors, (2687), 2687 states have call successors, (2687) [2022-12-13 11:33:31,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17067 states to 17067 states and 21400 transitions. [2022-12-13 11:33:31,692 INFO L78 Accepts]: Start accepts. Automaton has 17067 states and 21400 transitions. Word has length 195 [2022-12-13 11:33:31,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:33:31,692 INFO L495 AbstractCegarLoop]: Abstraction has 17067 states and 21400 transitions. [2022-12-13 11:33:31,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-12-13 11:33:31,692 INFO L276 IsEmpty]: Start isEmpty. Operand 17067 states and 21400 transitions. [2022-12-13 11:33:31,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-12-13 11:33:31,696 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:33:31,696 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:33:31,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-12-13 11:33:31,697 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:33:31,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:33:31,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1499966138, now seen corresponding path program 1 times [2022-12-13 11:33:31,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:33:31,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928436436] [2022-12-13 11:33:31,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:31,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:33:31,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:31,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:33:31,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:31,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:33:31,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:31,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 11:33:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:31,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:33:31,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:31,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:33:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:31,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 11:33:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:31,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 11:33:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:31,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 11:33:31,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:31,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 11:33:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:31,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 11:33:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:31,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:33:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:31,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 11:33:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:31,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 11:33:31,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:31,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-12-13 11:33:31,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:31,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-12-13 11:33:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:31,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-12-13 11:33:31,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:31,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-12-13 11:33:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:31,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-12-13 11:33:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:31,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-12-13 11:33:31,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:31,970 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 14 proven. 27 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-12-13 11:33:31,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:33:31,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928436436] [2022-12-13 11:33:31,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928436436] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:33:31,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472613165] [2022-12-13 11:33:31,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:31,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:33:31,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:33:31,972 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:33:31,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 11:33:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:32,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 11:33:32,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:33:32,307 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 42 proven. 87 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-13 11:33:32,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:33:32,466 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 20 proven. 27 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-12-13 11:33:32,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472613165] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:33:32,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:33:32,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-12-13 11:33:32,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435137493] [2022-12-13 11:33:32,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:33:32,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 11:33:32,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:33:32,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 11:33:32,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-12-13 11:33:32,468 INFO L87 Difference]: Start difference. First operand 17067 states and 21400 transitions. Second operand has 17 states, 17 states have (on average 14.470588235294118) internal successors, (246), 15 states have internal predecessors, (246), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) [2022-12-13 11:33:47,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:33:47,026 INFO L93 Difference]: Finished difference Result 39740 states and 51329 transitions. [2022-12-13 11:33:47,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-12-13 11:33:47,027 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 14.470588235294118) internal successors, (246), 15 states have internal predecessors, (246), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) Word has length 201 [2022-12-13 11:33:47,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:33:47,076 INFO L225 Difference]: With dead ends: 39740 [2022-12-13 11:33:47,076 INFO L226 Difference]: Without dead ends: 28673 [2022-12-13 11:33:47,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 467 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2524 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1214, Invalid=6618, Unknown=0, NotChecked=0, Total=7832 [2022-12-13 11:33:47,091 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 3600 mSDsluCounter, 6936 mSDsCounter, 0 mSdLazyCounter, 2723 mSolverCounterSat, 2013 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3600 SdHoareTripleChecker+Valid, 7802 SdHoareTripleChecker+Invalid, 4736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2013 IncrementalHoareTripleChecker+Valid, 2723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:33:47,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3600 Valid, 7802 Invalid, 4736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2013 Valid, 2723 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 11:33:47,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28673 states. [2022-12-13 11:33:53,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28673 to 18711. [2022-12-13 11:33:53,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18711 states, 14043 states have (on average 1.2461012604144415) internal successors, (17499), 14177 states have internal predecessors, (17499), 2904 states have call successors, (2904), 1763 states have call predecessors, (2904), 1763 states have return successors, (2904), 2770 states have call predecessors, (2904), 2904 states have call successors, (2904) [2022-12-13 11:33:53,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18711 states to 18711 states and 23307 transitions. [2022-12-13 11:33:53,116 INFO L78 Accepts]: Start accepts. Automaton has 18711 states and 23307 transitions. Word has length 201 [2022-12-13 11:33:53,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:33:53,116 INFO L495 AbstractCegarLoop]: Abstraction has 18711 states and 23307 transitions. [2022-12-13 11:33:53,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.470588235294118) internal successors, (246), 15 states have internal predecessors, (246), 7 states have call successors, (55), 4 states have call predecessors, (55), 7 states have return successors, (54), 9 states have call predecessors, (54), 7 states have call successors, (54) [2022-12-13 11:33:53,116 INFO L276 IsEmpty]: Start isEmpty. Operand 18711 states and 23307 transitions. [2022-12-13 11:33:53,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-12-13 11:33:53,121 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:33:53,121 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:33:53,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-13 11:33:53,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-12-13 11:33:53,323 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:33:53,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:33:53,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1104702064, now seen corresponding path program 1 times [2022-12-13 11:33:53,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:33:53,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280797344] [2022-12-13 11:33:53,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:53,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:33:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:53,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:33:53,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:53,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:33:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:53,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:33:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:53,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 11:33:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:53,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 11:33:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:53,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 11:33:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:53,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 11:33:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:53,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 11:33:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:53,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 11:33:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:53,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 11:33:53,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:53,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 11:33:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:53,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 11:33:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:53,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 11:33:53,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:53,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 11:33:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:53,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-12-13 11:33:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:53,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-12-13 11:33:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:53,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-12-13 11:33:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:53,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-12-13 11:33:53,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:53,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-12-13 11:33:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:53,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-12-13 11:33:53,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-12-13 11:33:53,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:33:53,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280797344] [2022-12-13 11:33:53,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280797344] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:33:53,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303001348] [2022-12-13 11:33:53,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:33:53,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:33:53,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:33:53,736 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:33:53,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 11:33:53,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:33:53,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 842 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 11:33:53,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:33:54,056 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 101 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-12-13 11:33:54,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:33:54,208 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-12-13 11:33:54,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303001348] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:33:54,209 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:33:54,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 19 [2022-12-13 11:33:54,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383862080] [2022-12-13 11:33:54,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:33:54,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 11:33:54,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:33:54,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 11:33:54,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-12-13 11:33:54,211 INFO L87 Difference]: Start difference. First operand 18711 states and 23307 transitions. Second operand has 19 states, 19 states have (on average 13.736842105263158) internal successors, (261), 19 states have internal predecessors, (261), 8 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 8 states have call predecessors, (54), 8 states have call successors, (54) [2022-12-13 11:34:09,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:34:09,060 INFO L93 Difference]: Finished difference Result 44352 states and 57012 transitions. [2022-12-13 11:34:09,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-12-13 11:34:09,061 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 13.736842105263158) internal successors, (261), 19 states have internal predecessors, (261), 8 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 8 states have call predecessors, (54), 8 states have call successors, (54) Word has length 205 [2022-12-13 11:34:09,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:34:09,117 INFO L225 Difference]: With dead ends: 44352 [2022-12-13 11:34:09,117 INFO L226 Difference]: Without dead ends: 25909 [2022-12-13 11:34:09,135 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 534 GetRequests, 454 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1928 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1067, Invalid=5575, Unknown=0, NotChecked=0, Total=6642 [2022-12-13 11:34:09,135 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 2439 mSDsluCounter, 5975 mSDsCounter, 0 mSdLazyCounter, 4979 mSolverCounterSat, 1629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2439 SdHoareTripleChecker+Valid, 6773 SdHoareTripleChecker+Invalid, 6608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1629 IncrementalHoareTripleChecker+Valid, 4979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:34:09,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2439 Valid, 6773 Invalid, 6608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1629 Valid, 4979 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-12-13 11:34:09,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25909 states. [2022-12-13 11:34:15,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25909 to 18534. [2022-12-13 11:34:15,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18534 states, 13868 states have (on average 1.2484136140755697) internal successors, (17313), 13999 states have internal predecessors, (17313), 2908 states have call successors, (2908), 1757 states have call predecessors, (2908), 1757 states have return successors, (2908), 2777 states have call predecessors, (2908), 2908 states have call successors, (2908) [2022-12-13 11:34:15,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18534 states to 18534 states and 23129 transitions. [2022-12-13 11:34:15,490 INFO L78 Accepts]: Start accepts. Automaton has 18534 states and 23129 transitions. Word has length 205 [2022-12-13 11:34:15,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:34:15,490 INFO L495 AbstractCegarLoop]: Abstraction has 18534 states and 23129 transitions. [2022-12-13 11:34:15,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 13.736842105263158) internal successors, (261), 19 states have internal predecessors, (261), 8 states have call successors, (55), 5 states have call predecessors, (55), 6 states have return successors, (54), 8 states have call predecessors, (54), 8 states have call successors, (54) [2022-12-13 11:34:15,491 INFO L276 IsEmpty]: Start isEmpty. Operand 18534 states and 23129 transitions. [2022-12-13 11:34:15,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-12-13 11:34:15,493 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:34:15,494 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:34:15,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 11:34:15,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:34:15,695 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:34:15,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:34:15,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1002307938, now seen corresponding path program 1 times [2022-12-13 11:34:15,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:34:15,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153496062] [2022-12-13 11:34:15,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:34:15,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:34:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:15,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:34:15,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:15,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:34:15,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:15,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:34:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:15,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 11:34:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:15,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 11:34:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:15,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 11:34:15,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:15,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 11:34:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:15,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 11:34:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:15,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 11:34:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:15,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 11:34:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:15,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 11:34:15,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:15,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 11:34:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:15,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 11:34:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:15,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 11:34:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:15,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 11:34:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:15,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-12-13 11:34:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:15,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-12-13 11:34:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:15,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-12-13 11:34:15,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:15,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-12-13 11:34:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:15,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-12-13 11:34:15,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:15,975 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 21 proven. 25 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2022-12-13 11:34:15,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:34:15,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153496062] [2022-12-13 11:34:15,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153496062] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:34:15,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265887293] [2022-12-13 11:34:15,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:34:15,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:34:15,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:34:15,977 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:34:15,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 11:34:16,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:16,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 11:34:16,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:34:16,264 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 126 proven. 31 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 11:34:16,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:34:16,473 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-12-13 11:34:16,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265887293] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:34:16,474 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:34:16,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 16 [2022-12-13 11:34:16,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022850121] [2022-12-13 11:34:16,474 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:34:16,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 11:34:16,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:34:16,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 11:34:16,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-12-13 11:34:16,475 INFO L87 Difference]: Start difference. First operand 18534 states and 23129 transitions. Second operand has 16 states, 16 states have (on average 12.1875) internal successors, (195), 13 states have internal predecessors, (195), 4 states have call successors, (40), 4 states have call predecessors, (40), 9 states have return successors, (41), 7 states have call predecessors, (41), 4 states have call successors, (41) [2022-12-13 11:34:30,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:34:30,426 INFO L93 Difference]: Finished difference Result 47652 states and 61272 transitions. [2022-12-13 11:34:30,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 11:34:30,427 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 12.1875) internal successors, (195), 13 states have internal predecessors, (195), 4 states have call successors, (40), 4 states have call predecessors, (40), 9 states have return successors, (41), 7 states have call predecessors, (41), 4 states have call successors, (41) Word has length 209 [2022-12-13 11:34:30,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:34:30,491 INFO L225 Difference]: With dead ends: 47652 [2022-12-13 11:34:30,491 INFO L226 Difference]: Without dead ends: 30775 [2022-12-13 11:34:30,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 457 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=267, Invalid=1293, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 11:34:30,508 INFO L413 NwaCegarLoop]: 682 mSDtfsCounter, 1560 mSDsluCounter, 4782 mSDsCounter, 0 mSdLazyCounter, 2028 mSolverCounterSat, 900 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1569 SdHoareTripleChecker+Valid, 5464 SdHoareTripleChecker+Invalid, 2928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 900 IncrementalHoareTripleChecker+Valid, 2028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 11:34:30,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1569 Valid, 5464 Invalid, 2928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [900 Valid, 2028 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 11:34:30,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30775 states. [2022-12-13 11:34:37,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30775 to 18919. [2022-12-13 11:34:37,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18919 states, 14175 states have (on average 1.2488183421516754) internal successors, (17702), 14313 states have internal predecessors, (17702), 2956 states have call successors, (2956), 1787 states have call predecessors, (2956), 1787 states have return successors, (2956), 2818 states have call predecessors, (2956), 2956 states have call successors, (2956) [2022-12-13 11:34:37,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18919 states to 18919 states and 23614 transitions. [2022-12-13 11:34:37,606 INFO L78 Accepts]: Start accepts. Automaton has 18919 states and 23614 transitions. Word has length 209 [2022-12-13 11:34:37,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:34:37,607 INFO L495 AbstractCegarLoop]: Abstraction has 18919 states and 23614 transitions. [2022-12-13 11:34:37,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 12.1875) internal successors, (195), 13 states have internal predecessors, (195), 4 states have call successors, (40), 4 states have call predecessors, (40), 9 states have return successors, (41), 7 states have call predecessors, (41), 4 states have call successors, (41) [2022-12-13 11:34:37,607 INFO L276 IsEmpty]: Start isEmpty. Operand 18919 states and 23614 transitions. [2022-12-13 11:34:37,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-12-13 11:34:37,610 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:34:37,610 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 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, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:34:37,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-13 11:34:37,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2022-12-13 11:34:37,811 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:34:37,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:34:37,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1639295813, now seen corresponding path program 1 times [2022-12-13 11:34:37,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:34:37,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013951636] [2022-12-13 11:34:37,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:34:37,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:34:37,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:34:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:34:38,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:34:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 11:34:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 11:34:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 11:34:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 11:34:38,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 11:34:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 11:34:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 11:34:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 11:34:38,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 11:34:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 11:34:38,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 11:34:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 11:34:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-12-13 11:34:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-12-13 11:34:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-12-13 11:34:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-12-13 11:34:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-12-13 11:34:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 11:34:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,224 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-12-13 11:34:38,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:34:38,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013951636] [2022-12-13 11:34:38,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013951636] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:34:38,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367223664] [2022-12-13 11:34:38,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:34:38,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:34:38,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:34:38,225 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:34:38,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 11:34:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:38,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 11:34:38,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:34:38,575 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 4 proven. 136 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-13 11:34:38,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:34:38,841 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-12-13 11:34:38,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367223664] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:34:38,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:34:38,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 9] total 18 [2022-12-13 11:34:38,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52068708] [2022-12-13 11:34:38,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:34:38,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 11:34:38,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:34:38,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 11:34:38,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-12-13 11:34:38,843 INFO L87 Difference]: Start difference. First operand 18919 states and 23614 transitions. Second operand has 18 states, 17 states have (on average 12.764705882352942) internal successors, (217), 18 states have internal predecessors, (217), 8 states have call successors, (44), 6 states have call predecessors, (44), 6 states have return successors, (43), 6 states have call predecessors, (43), 7 states have call successors, (43) [2022-12-13 11:34:48,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:34:48,863 INFO L93 Difference]: Finished difference Result 39263 states and 49658 transitions. [2022-12-13 11:34:48,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 11:34:48,864 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 12.764705882352942) internal successors, (217), 18 states have internal predecessors, (217), 8 states have call successors, (44), 6 states have call predecessors, (44), 6 states have return successors, (43), 6 states have call predecessors, (43), 7 states have call successors, (43) Word has length 212 [2022-12-13 11:34:48,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:34:48,902 INFO L225 Difference]: With dead ends: 39263 [2022-12-13 11:34:48,902 INFO L226 Difference]: Without dead ends: 22841 [2022-12-13 11:34:48,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=290, Invalid=900, Unknown=0, NotChecked=0, Total=1190 [2022-12-13 11:34:48,918 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 1932 mSDsluCounter, 2741 mSDsCounter, 0 mSdLazyCounter, 1439 mSolverCounterSat, 825 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1932 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 2264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 825 IncrementalHoareTripleChecker+Valid, 1439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 11:34:48,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1932 Valid, 3147 Invalid, 2264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [825 Valid, 1439 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 11:34:48,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22841 states. [2022-12-13 11:34:56,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22841 to 21085. [2022-12-13 11:34:56,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21085 states, 15768 states have (on average 1.2515854895991883) internal successors, (19735), 15924 states have internal predecessors, (19735), 3316 states have call successors, (3316), 2000 states have call predecessors, (3316), 2000 states have return successors, (3316), 3160 states have call predecessors, (3316), 3316 states have call successors, (3316) [2022-12-13 11:34:56,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21085 states to 21085 states and 26367 transitions. [2022-12-13 11:34:56,862 INFO L78 Accepts]: Start accepts. Automaton has 21085 states and 26367 transitions. Word has length 212 [2022-12-13 11:34:56,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:34:56,862 INFO L495 AbstractCegarLoop]: Abstraction has 21085 states and 26367 transitions. [2022-12-13 11:34:56,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 12.764705882352942) internal successors, (217), 18 states have internal predecessors, (217), 8 states have call successors, (44), 6 states have call predecessors, (44), 6 states have return successors, (43), 6 states have call predecessors, (43), 7 states have call successors, (43) [2022-12-13 11:34:56,862 INFO L276 IsEmpty]: Start isEmpty. Operand 21085 states and 26367 transitions. [2022-12-13 11:34:56,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-12-13 11:34:56,865 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:34:56,865 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:34:56,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-13 11:34:57,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-12-13 11:34:57,067 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:34:57,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:34:57,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1740177431, now seen corresponding path program 1 times [2022-12-13 11:34:57,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:34:57,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003730019] [2022-12-13 11:34:57,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:34:57,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:34:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:34:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:34:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:34:57,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 11:34:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 11:34:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 11:34:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 11:34:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 11:34:57,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 11:34:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 11:34:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 11:34:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 11:34:57,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 11:34:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 11:34:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 11:34:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-12-13 11:34:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-12-13 11:34:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-12-13 11:34:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-12-13 11:34:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-12-13 11:34:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-12-13 11:34:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:34:57,279 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-12-13 11:34:57,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:34:57,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003730019] [2022-12-13 11:34:57,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003730019] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:34:57,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:34:57,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 11:34:57,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033031277] [2022-12-13 11:34:57,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:34:57,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 11:34:57,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:34:57,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 11:34:57,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 11:34:57,280 INFO L87 Difference]: Start difference. First operand 21085 states and 26367 transitions. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-13 11:35:07,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:35:07,574 INFO L93 Difference]: Finished difference Result 40748 states and 51745 transitions. [2022-12-13 11:35:07,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:35:07,575 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 212 [2022-12-13 11:35:07,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:35:07,615 INFO L225 Difference]: With dead ends: 40748 [2022-12-13 11:35:07,615 INFO L226 Difference]: Without dead ends: 23746 [2022-12-13 11:35:07,633 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:35:07,634 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 537 mSDsluCounter, 1712 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 2172 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:35:07,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 2172 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 11:35:07,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23746 states. [2022-12-13 11:35:15,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23746 to 20740. [2022-12-13 11:35:15,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20740 states, 15517 states have (on average 1.249403879615905) internal successors, (19387), 15666 states have internal predecessors, (19387), 3261 states have call successors, (3261), 1961 states have call predecessors, (3261), 1961 states have return successors, (3261), 3112 states have call predecessors, (3261), 3261 states have call successors, (3261) [2022-12-13 11:35:15,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20740 states to 20740 states and 25909 transitions. [2022-12-13 11:35:15,510 INFO L78 Accepts]: Start accepts. Automaton has 20740 states and 25909 transitions. Word has length 212 [2022-12-13 11:35:15,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:35:15,510 INFO L495 AbstractCegarLoop]: Abstraction has 20740 states and 25909 transitions. [2022-12-13 11:35:15,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-13 11:35:15,510 INFO L276 IsEmpty]: Start isEmpty. Operand 20740 states and 25909 transitions. [2022-12-13 11:35:15,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-12-13 11:35:15,514 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:35:15,514 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:35:15,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-12-13 11:35:15,514 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:35:15,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:35:15,514 INFO L85 PathProgramCache]: Analyzing trace with hash -404797626, now seen corresponding path program 1 times [2022-12-13 11:35:15,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:35:15,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451395990] [2022-12-13 11:35:15,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:35:15,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:35:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:15,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:35:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:15,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 11:35:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:15,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 11:35:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:15,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 11:35:15,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:15,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 11:35:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:15,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 11:35:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:15,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 11:35:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:15,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 11:35:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:15,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 11:35:15,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:15,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 11:35:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:15,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 11:35:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:15,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 11:35:15,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:15,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 11:35:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:15,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 11:35:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:15,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-12-13 11:35:15,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:15,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-12-13 11:35:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:15,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-12-13 11:35:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:15,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-12-13 11:35:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:15,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-12-13 11:35:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:15,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-12-13 11:35:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:15,843 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 33 proven. 11 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-12-13 11:35:15,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:35:15,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451395990] [2022-12-13 11:35:15,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451395990] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:35:15,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233765694] [2022-12-13 11:35:15,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:35:15,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:35:15,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:35:15,844 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:35:15,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 11:35:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:15,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 11:35:15,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:35:16,544 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 124 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 11:35:16,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:35:16,877 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 38 proven. 6 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-12-13 11:35:16,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233765694] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:35:16,877 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:35:16,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 22 [2022-12-13 11:35:16,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936271121] [2022-12-13 11:35:16,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:35:16,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 11:35:16,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:35:16,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 11:35:16,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2022-12-13 11:35:16,879 INFO L87 Difference]: Start difference. First operand 20740 states and 25909 transitions. Second operand has 22 states, 22 states have (on average 14.545454545454545) internal successors, (320), 22 states have internal predecessors, (320), 9 states have call successors, (54), 5 states have call predecessors, (54), 5 states have return successors, (53), 9 states have call predecessors, (53), 9 states have call successors, (53) [2022-12-13 11:35:43,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:35:43,870 INFO L93 Difference]: Finished difference Result 47944 states and 62640 transitions. [2022-12-13 11:35:43,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-12-13 11:35:43,871 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 14.545454545454545) internal successors, (320), 22 states have internal predecessors, (320), 9 states have call successors, (54), 5 states have call predecessors, (54), 5 states have return successors, (53), 9 states have call predecessors, (53), 9 states have call successors, (53) Word has length 218 [2022-12-13 11:35:43,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:35:43,927 INFO L225 Difference]: With dead ends: 47944 [2022-12-13 11:35:43,927 INFO L226 Difference]: Without dead ends: 30064 [2022-12-13 11:35:43,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 478 SyntacticMatches, 1 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4600 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1577, Invalid=11763, Unknown=0, NotChecked=0, Total=13340 [2022-12-13 11:35:43,946 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 2858 mSDsluCounter, 11783 mSDsCounter, 0 mSdLazyCounter, 11565 mSolverCounterSat, 2156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2858 SdHoareTripleChecker+Valid, 13300 SdHoareTripleChecker+Invalid, 13721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2156 IncrementalHoareTripleChecker+Valid, 11565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:35:43,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2858 Valid, 13300 Invalid, 13721 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2156 Valid, 11565 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-12-13 11:35:43,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30064 states. [2022-12-13 11:35:52,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30064 to 20522. [2022-12-13 11:35:52,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20522 states, 15333 states have (on average 1.2512228526707103) internal successors, (19185), 15479 states have internal predecessors, (19185), 3249 states have call successors, (3249), 1939 states have call predecessors, (3249), 1939 states have return successors, (3249), 3103 states have call predecessors, (3249), 3249 states have call successors, (3249) [2022-12-13 11:35:52,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20522 states to 20522 states and 25683 transitions. [2022-12-13 11:35:52,307 INFO L78 Accepts]: Start accepts. Automaton has 20522 states and 25683 transitions. Word has length 218 [2022-12-13 11:35:52,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:35:52,307 INFO L495 AbstractCegarLoop]: Abstraction has 20522 states and 25683 transitions. [2022-12-13 11:35:52,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 14.545454545454545) internal successors, (320), 22 states have internal predecessors, (320), 9 states have call successors, (54), 5 states have call predecessors, (54), 5 states have return successors, (53), 9 states have call predecessors, (53), 9 states have call successors, (53) [2022-12-13 11:35:52,307 INFO L276 IsEmpty]: Start isEmpty. Operand 20522 states and 25683 transitions. [2022-12-13 11:35:52,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-12-13 11:35:52,310 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:35:52,311 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:35:52,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 11:35:52,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-12-13 11:35:52,512 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:35:52,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:35:52,513 INFO L85 PathProgramCache]: Analyzing trace with hash 682107359, now seen corresponding path program 1 times [2022-12-13 11:35:52,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:35:52,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550825710] [2022-12-13 11:35:52,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:35:52,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:35:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:52,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:35:52,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:52,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 11:35:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:52,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 11:35:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:52,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 11:35:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:52,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 11:35:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:52,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 11:35:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:52,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 11:35:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:52,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 11:35:52,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:52,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 11:35:52,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:52,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 11:35:52,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:52,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 11:35:52,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:52,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 11:35:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:52,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 11:35:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:52,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-12-13 11:35:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:52,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 11:35:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:52,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-12-13 11:35:52,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:52,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-12-13 11:35:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:52,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-12-13 11:35:52,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:52,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-12-13 11:35:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:52,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-12-13 11:35:52,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:52,870 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 4 proven. 40 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-12-13 11:35:52,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:35:52,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550825710] [2022-12-13 11:35:52,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550825710] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:35:52,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1387329474] [2022-12-13 11:35:52,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:35:52,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:35:52,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:35:52,871 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:35:52,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 11:35:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:35:53,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 892 conjuncts, 21 conjunts are in the unsatisfiable core [2022-12-13 11:35:53,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:35:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 4 proven. 130 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 11:35:53,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:35:53,494 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 4 proven. 40 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-12-13 11:35:53,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1387329474] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:35:53,494 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:35:53,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 22 [2022-12-13 11:35:53,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354962669] [2022-12-13 11:35:53,494 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:35:53,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 11:35:53,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:35:53,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 11:35:53,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2022-12-13 11:35:53,495 INFO L87 Difference]: Start difference. First operand 20522 states and 25683 transitions. Second operand has 22 states, 22 states have (on average 13.636363636363637) internal successors, (300), 22 states have internal predecessors, (300), 10 states have call successors, (55), 6 states have call predecessors, (55), 5 states have return successors, (54), 9 states have call predecessors, (54), 9 states have call successors, (54) [2022-12-13 11:36:10,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:36:10,284 INFO L93 Difference]: Finished difference Result 50117 states and 64479 transitions. [2022-12-13 11:36:10,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 11:36:10,284 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 13.636363636363637) internal successors, (300), 22 states have internal predecessors, (300), 10 states have call successors, (55), 6 states have call predecessors, (55), 5 states have return successors, (54), 9 states have call predecessors, (54), 9 states have call successors, (54) Word has length 219 [2022-12-13 11:36:10,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:36:10,345 INFO L225 Difference]: With dead ends: 50117 [2022-12-13 11:36:10,346 INFO L226 Difference]: Without dead ends: 32724 [2022-12-13 11:36:10,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 469 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 312 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=299, Invalid=1107, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 11:36:10,366 INFO L413 NwaCegarLoop]: 460 mSDtfsCounter, 1961 mSDsluCounter, 2984 mSDsCounter, 0 mSdLazyCounter, 1787 mSolverCounterSat, 826 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1961 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 2613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 826 IncrementalHoareTripleChecker+Valid, 1787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:36:10,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1961 Valid, 3444 Invalid, 2613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [826 Valid, 1787 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 11:36:10,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32724 states. [2022-12-13 11:36:21,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32724 to 26736. [2022-12-13 11:36:21,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26736 states, 19975 states have (on average 1.2550187734668334) internal successors, (25069), 20170 states have internal predecessors, (25069), 4240 states have call successors, (4240), 2520 states have call predecessors, (4240), 2520 states have return successors, (4240), 4045 states have call predecessors, (4240), 4240 states have call successors, (4240) [2022-12-13 11:36:21,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26736 states to 26736 states and 33549 transitions. [2022-12-13 11:36:21,851 INFO L78 Accepts]: Start accepts. Automaton has 26736 states and 33549 transitions. Word has length 219 [2022-12-13 11:36:21,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:36:21,851 INFO L495 AbstractCegarLoop]: Abstraction has 26736 states and 33549 transitions. [2022-12-13 11:36:21,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 13.636363636363637) internal successors, (300), 22 states have internal predecessors, (300), 10 states have call successors, (55), 6 states have call predecessors, (55), 5 states have return successors, (54), 9 states have call predecessors, (54), 9 states have call successors, (54) [2022-12-13 11:36:21,852 INFO L276 IsEmpty]: Start isEmpty. Operand 26736 states and 33549 transitions. [2022-12-13 11:36:21,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-12-13 11:36:21,856 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:36:21,856 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:36:21,861 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-13 11:36:22,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:36:22,057 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:36:22,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:36:22,058 INFO L85 PathProgramCache]: Analyzing trace with hash -82977731, now seen corresponding path program 1 times [2022-12-13 11:36:22,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:36:22,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182543803] [2022-12-13 11:36:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:36:22,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:36:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:22,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:36:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:22,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 11:36:22,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:22,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 11:36:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:22,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 11:36:22,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:22,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 11:36:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:22,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 11:36:22,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:22,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 11:36:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:22,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 11:36:22,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:22,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 11:36:22,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:22,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 11:36:22,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:22,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 11:36:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:22,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 11:36:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:22,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 11:36:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:22,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 11:36:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:22,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-12-13 11:36:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:22,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 11:36:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:22,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 11:36:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:22,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 11:36:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:22,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-12-13 11:36:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:22,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-12-13 11:36:22,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:22,389 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 33 proven. 11 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-12-13 11:36:22,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:36:22,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182543803] [2022-12-13 11:36:22,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182543803] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:36:22,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183611245] [2022-12-13 11:36:22,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:36:22,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:36:22,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:36:22,390 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:36:22,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 11:36:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:36:22,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 905 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 11:36:22,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:36:22,705 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 115 proven. 19 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 11:36:22,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:36:22,931 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 33 proven. 11 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-12-13 11:36:22,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183611245] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:36:22,931 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:36:22,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 20 [2022-12-13 11:36:22,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243759722] [2022-12-13 11:36:22,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:36:22,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 11:36:22,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:36:22,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 11:36:22,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-12-13 11:36:22,933 INFO L87 Difference]: Start difference. First operand 26736 states and 33549 transitions. Second operand has 20 states, 20 states have (on average 14.8) internal successors, (296), 20 states have internal predecessors, (296), 8 states have call successors, (42), 5 states have call predecessors, (42), 5 states have return successors, (41), 8 states have call predecessors, (41), 8 states have call successors, (41) [2022-12-13 11:37:22,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:37:22,610 INFO L93 Difference]: Finished difference Result 107811 states and 149658 transitions. [2022-12-13 11:37:22,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-12-13 11:37:22,611 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 14.8) internal successors, (296), 20 states have internal predecessors, (296), 8 states have call successors, (42), 5 states have call predecessors, (42), 5 states have return successors, (41), 8 states have call predecessors, (41), 8 states have call successors, (41) Word has length 222 [2022-12-13 11:37:22,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:37:22,812 INFO L225 Difference]: With dead ends: 107811 [2022-12-13 11:37:22,812 INFO L226 Difference]: Without dead ends: 84382 [2022-12-13 11:37:22,851 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 475 SyntacticMatches, 1 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3039 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1674, Invalid=7256, Unknown=0, NotChecked=0, Total=8930 [2022-12-13 11:37:22,851 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 4566 mSDsluCounter, 4950 mSDsCounter, 0 mSdLazyCounter, 4913 mSolverCounterSat, 4052 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4566 SdHoareTripleChecker+Valid, 5871 SdHoareTripleChecker+Invalid, 8965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4052 IncrementalHoareTripleChecker+Valid, 4913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-12-13 11:37:22,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4566 Valid, 5871 Invalid, 8965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4052 Valid, 4913 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-12-13 11:37:22,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84382 states. [2022-12-13 11:37:35,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84382 to 26825. [2022-12-13 11:37:35,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26825 states, 20064 states have (on average 1.25627990430622) internal successors, (25206), 20259 states have internal predecessors, (25206), 4240 states have call successors, (4240), 2520 states have call predecessors, (4240), 2520 states have return successors, (4240), 4045 states have call predecessors, (4240), 4240 states have call successors, (4240) [2022-12-13 11:37:35,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26825 states to 26825 states and 33686 transitions. [2022-12-13 11:37:35,148 INFO L78 Accepts]: Start accepts. Automaton has 26825 states and 33686 transitions. Word has length 222 [2022-12-13 11:37:35,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:37:35,149 INFO L495 AbstractCegarLoop]: Abstraction has 26825 states and 33686 transitions. [2022-12-13 11:37:35,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.8) internal successors, (296), 20 states have internal predecessors, (296), 8 states have call successors, (42), 5 states have call predecessors, (42), 5 states have return successors, (41), 8 states have call predecessors, (41), 8 states have call successors, (41) [2022-12-13 11:37:35,149 INFO L276 IsEmpty]: Start isEmpty. Operand 26825 states and 33686 transitions. [2022-12-13 11:37:35,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-12-13 11:37:35,153 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:37:35,153 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:37:35,159 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-13 11:37:35,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable50 [2022-12-13 11:37:35,355 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:37:35,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:37:35,356 INFO L85 PathProgramCache]: Analyzing trace with hash 870962427, now seen corresponding path program 1 times [2022-12-13 11:37:35,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:37:35,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964386952] [2022-12-13 11:37:35,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:35,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:37:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:37:35,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 11:37:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 11:37:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 11:37:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 11:37:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 11:37:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 11:37:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 11:37:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 11:37:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 11:37:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 11:37:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 11:37:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 11:37:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 11:37:35,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-12-13 11:37:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 11:37:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 11:37:35,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-12-13 11:37:35,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-12-13 11:37:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-12-13 11:37:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,692 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-12-13 11:37:35,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:37:35,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964386952] [2022-12-13 11:37:35,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964386952] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:37:35,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728442911] [2022-12-13 11:37:35,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:37:35,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:37:35,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:37:35,694 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:37:35,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 11:37:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:37:35,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-13 11:37:35,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:37:36,873 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 81 proven. 53 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 11:37:36,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:37:37,141 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 22 proven. 24 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-12-13 11:37:37,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728442911] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:37:37,141 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:37:37,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 12] total 28 [2022-12-13 11:37:37,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797271671] [2022-12-13 11:37:37,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:37:37,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 11:37:37,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:37:37,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 11:37:37,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2022-12-13 11:37:37,143 INFO L87 Difference]: Start difference. First operand 26825 states and 33686 transitions. Second operand has 28 states, 28 states have (on average 10.25) internal successors, (287), 26 states have internal predecessors, (287), 9 states have call successors, (42), 6 states have call predecessors, (42), 9 states have return successors, (42), 11 states have call predecessors, (42), 9 states have call successors, (42) [2022-12-13 11:38:04,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:38:04,637 INFO L93 Difference]: Finished difference Result 63379 states and 81794 transitions. [2022-12-13 11:38:04,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-13 11:38:04,637 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.25) internal successors, (287), 26 states have internal predecessors, (287), 9 states have call successors, (42), 6 states have call predecessors, (42), 9 states have return successors, (42), 11 states have call predecessors, (42), 9 states have call successors, (42) Word has length 222 [2022-12-13 11:38:04,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:38:04,712 INFO L225 Difference]: With dead ends: 63379 [2022-12-13 11:38:04,712 INFO L226 Difference]: Without dead ends: 39887 [2022-12-13 11:38:04,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 470 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1452 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=758, Invalid=4792, Unknown=0, NotChecked=0, Total=5550 [2022-12-13 11:38:04,738 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 2521 mSDsluCounter, 4471 mSDsCounter, 0 mSdLazyCounter, 4115 mSolverCounterSat, 1237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2521 SdHoareTripleChecker+Valid, 4926 SdHoareTripleChecker+Invalid, 5352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1237 IncrementalHoareTripleChecker+Valid, 4115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-12-13 11:38:04,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2521 Valid, 4926 Invalid, 5352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1237 Valid, 4115 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-12-13 11:38:04,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39887 states. [2022-12-13 11:38:18,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39887 to 29020. [2022-12-13 11:38:18,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29020 states, 21679 states have (on average 1.2548549287328752) internal successors, (27204), 21891 states have internal predecessors, (27204), 4591 states have call successors, (4591), 2749 states have call predecessors, (4591), 2749 states have return successors, (4591), 4379 states have call predecessors, (4591), 4591 states have call successors, (4591) [2022-12-13 11:38:18,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29020 states to 29020 states and 36386 transitions. [2022-12-13 11:38:18,665 INFO L78 Accepts]: Start accepts. Automaton has 29020 states and 36386 transitions. Word has length 222 [2022-12-13 11:38:18,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:38:18,666 INFO L495 AbstractCegarLoop]: Abstraction has 29020 states and 36386 transitions. [2022-12-13 11:38:18,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.25) internal successors, (287), 26 states have internal predecessors, (287), 9 states have call successors, (42), 6 states have call predecessors, (42), 9 states have return successors, (42), 11 states have call predecessors, (42), 9 states have call successors, (42) [2022-12-13 11:38:18,666 INFO L276 IsEmpty]: Start isEmpty. Operand 29020 states and 36386 transitions. [2022-12-13 11:38:18,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-12-13 11:38:18,684 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:38:18,684 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:38:18,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-12-13 11:38:18,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:38:18,886 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:38:18,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:38:18,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1027268773, now seen corresponding path program 1 times [2022-12-13 11:38:18,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:38:18,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815028998] [2022-12-13 11:38:18,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:38:18,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:38:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:38:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:38:19,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 11:38:19,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:38:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:38:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 11:38:19,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 11:38:19,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 11:38:19,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 11:38:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 11:38:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:38:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 11:38:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 11:38:19,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-12-13 11:38:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-12-13 11:38:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-12-13 11:38:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-12-13 11:38:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-12-13 11:38:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-12-13 11:38:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-12-13 11:38:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-12-13 11:38:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-12-13 11:38:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-12-13 11:38:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-12-13 11:38:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-12-13 11:38:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:19,104 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2022-12-13 11:38:19,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:38:19,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815028998] [2022-12-13 11:38:19,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815028998] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:38:19,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 11:38:19,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 11:38:19,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018805077] [2022-12-13 11:38:19,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:38:19,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 11:38:19,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:38:19,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 11:38:19,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 11:38:19,106 INFO L87 Difference]: Start difference. First operand 29020 states and 36386 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-13 11:38:33,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:38:33,705 INFO L93 Difference]: Finished difference Result 55641 states and 70195 transitions. [2022-12-13 11:38:33,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 11:38:33,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 266 [2022-12-13 11:38:33,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:38:33,758 INFO L225 Difference]: With dead ends: 55641 [2022-12-13 11:38:33,758 INFO L226 Difference]: Without dead ends: 28620 [2022-12-13 11:38:33,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 11:38:33,784 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 7 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:38:33,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 724 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 11:38:33,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28620 states. [2022-12-13 11:38:47,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28620 to 28620. [2022-12-13 11:38:47,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28620 states, 21479 states have (on average 1.233530425066344) internal successors, (26495), 21691 states have internal predecessors, (26495), 4391 states have call successors, (4391), 2749 states have call predecessors, (4391), 2749 states have return successors, (4391), 4179 states have call predecessors, (4391), 4391 states have call successors, (4391) [2022-12-13 11:38:47,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28620 states to 28620 states and 35277 transitions. [2022-12-13 11:38:47,311 INFO L78 Accepts]: Start accepts. Automaton has 28620 states and 35277 transitions. Word has length 266 [2022-12-13 11:38:47,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:38:47,311 INFO L495 AbstractCegarLoop]: Abstraction has 28620 states and 35277 transitions. [2022-12-13 11:38:47,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (14), 3 states have call predecessors, (14), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2022-12-13 11:38:47,311 INFO L276 IsEmpty]: Start isEmpty. Operand 28620 states and 35277 transitions. [2022-12-13 11:38:47,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2022-12-13 11:38:47,325 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:38:47,326 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:38:47,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-12-13 11:38:47,326 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:38:47,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:38:47,326 INFO L85 PathProgramCache]: Analyzing trace with hash -455003971, now seen corresponding path program 1 times [2022-12-13 11:38:47,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:38:47,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696147604] [2022-12-13 11:38:47,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:38:47,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:38:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:38:47,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:38:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:38:47,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 11:38:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 11:38:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 11:38:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 11:38:47,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 11:38:47,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 11:38:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 11:38:47,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 11:38:47,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 11:38:47,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 11:38:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-12-13 11:38:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-12-13 11:38:47,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-12-13 11:38:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-12-13 11:38:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-12-13 11:38:47,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-12-13 11:38:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-12-13 11:38:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-12-13 11:38:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-12-13 11:38:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2022-12-13 11:38:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-12-13 11:38:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-12-13 11:38:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-12-13 11:38:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,624 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 77 proven. 25 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2022-12-13 11:38:47,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:38:47,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696147604] [2022-12-13 11:38:47,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696147604] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:38:47,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533371006] [2022-12-13 11:38:47,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:38:47,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:38:47,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:38:47,625 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:38:47,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 11:38:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:38:47,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 1095 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 11:38:47,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:38:47,925 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 182 proven. 78 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-12-13 11:38:47,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:38:48,084 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 77 proven. 25 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2022-12-13 11:38:48,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533371006] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:38:48,084 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:38:48,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-12-13 11:38:48,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494242732] [2022-12-13 11:38:48,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:38:48,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 11:38:48,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:38:48,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 11:38:48,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-12-13 11:38:48,086 INFO L87 Difference]: Start difference. First operand 28620 states and 35277 transitions. Second operand has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 11 states have internal predecessors, (236), 5 states have call successors, (52), 4 states have call predecessors, (52), 7 states have return successors, (53), 6 states have call predecessors, (53), 5 states have call successors, (53) [2022-12-13 11:39:06,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:39:06,846 INFO L93 Difference]: Finished difference Result 59014 states and 73178 transitions. [2022-12-13 11:39:06,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 11:39:06,847 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 11 states have internal predecessors, (236), 5 states have call successors, (52), 4 states have call predecessors, (52), 7 states have return successors, (53), 6 states have call predecessors, (53), 5 states have call successors, (53) Word has length 269 [2022-12-13 11:39:06,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:39:06,902 INFO L225 Difference]: With dead ends: 59014 [2022-12-13 11:39:06,902 INFO L226 Difference]: Without dead ends: 32285 [2022-12-13 11:39:06,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 593 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2022-12-13 11:39:06,928 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 1148 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 11:39:06,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 2485 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 11:39:06,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32285 states. [2022-12-13 11:39:20,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32285 to 28620. [2022-12-13 11:39:20,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28620 states, 21479 states have (on average 1.22724521625774) internal successors, (26360), 21691 states have internal predecessors, (26360), 4391 states have call successors, (4391), 2749 states have call predecessors, (4391), 2749 states have return successors, (4391), 4179 states have call predecessors, (4391), 4391 states have call successors, (4391) [2022-12-13 11:39:20,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28620 states to 28620 states and 35142 transitions. [2022-12-13 11:39:20,914 INFO L78 Accepts]: Start accepts. Automaton has 28620 states and 35142 transitions. Word has length 269 [2022-12-13 11:39:20,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:39:20,914 INFO L495 AbstractCegarLoop]: Abstraction has 28620 states and 35142 transitions. [2022-12-13 11:39:20,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.666666666666668) internal successors, (236), 11 states have internal predecessors, (236), 5 states have call successors, (52), 4 states have call predecessors, (52), 7 states have return successors, (53), 6 states have call predecessors, (53), 5 states have call successors, (53) [2022-12-13 11:39:20,915 INFO L276 IsEmpty]: Start isEmpty. Operand 28620 states and 35142 transitions. [2022-12-13 11:39:20,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-12-13 11:39:20,926 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:39:20,926 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:39:20,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-13 11:39:21,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:39:21,127 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:39:21,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:39:21,128 INFO L85 PathProgramCache]: Analyzing trace with hash 157338488, now seen corresponding path program 1 times [2022-12-13 11:39:21,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:39:21,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128041892] [2022-12-13 11:39:21,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:39:21,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:39:21,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:39:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:39:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 11:39:21,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:39:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:39:21,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 11:39:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 11:39:21,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 11:39:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 11:39:21,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 11:39:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:39:21,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 11:39:21,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-12-13 11:39:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 11:39:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 11:39:21,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 11:39:21,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 11:39:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 11:39:21,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-12-13 11:39:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-12-13 11:39:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-12-13 11:39:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-12-13 11:39:21,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-12-13 11:39:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-12-13 11:39:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-12-13 11:39:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,453 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 80 proven. 26 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-12-13 11:39:21,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:39:21,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128041892] [2022-12-13 11:39:21,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128041892] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:39:21,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744305234] [2022-12-13 11:39:21,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:39:21,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:39:21,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:39:21,454 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:39:21,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 11:39:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:21,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 1084 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 11:39:21,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:39:21,745 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 206 proven. 65 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-12-13 11:39:21,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:39:21,884 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 80 proven. 26 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-12-13 11:39:21,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744305234] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:39:21,884 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:39:21,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 12 [2022-12-13 11:39:21,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011155361] [2022-12-13 11:39:21,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:39:21,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 11:39:21,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:39:21,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 11:39:21,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-12-13 11:39:21,886 INFO L87 Difference]: Start difference. First operand 28620 states and 35142 transitions. Second operand has 12 states, 12 states have (on average 19.833333333333332) internal successors, (238), 11 states have internal predecessors, (238), 5 states have call successors, (50), 4 states have call predecessors, (50), 7 states have return successors, (51), 6 states have call predecessors, (51), 5 states have call successors, (51) [2022-12-13 11:39:39,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:39:39,864 INFO L93 Difference]: Finished difference Result 57398 states and 70932 transitions. [2022-12-13 11:39:39,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 11:39:39,865 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 19.833333333333332) internal successors, (238), 11 states have internal predecessors, (238), 5 states have call successors, (50), 4 states have call predecessors, (50), 7 states have return successors, (51), 6 states have call predecessors, (51), 5 states have call successors, (51) Word has length 268 [2022-12-13 11:39:39,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:39:39,922 INFO L225 Difference]: With dead ends: 57398 [2022-12-13 11:39:39,923 INFO L226 Difference]: Without dead ends: 32356 [2022-12-13 11:39:39,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 590 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=188, Invalid=624, Unknown=0, NotChecked=0, Total=812 [2022-12-13 11:39:39,948 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 1503 mSDsluCounter, 2733 mSDsCounter, 0 mSdLazyCounter, 807 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 3241 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 807 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 11:39:39,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 3241 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 807 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 11:39:39,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32356 states. [2022-12-13 11:39:54,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32356 to 28620. [2022-12-13 11:39:54,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28620 states, 21479 states have (on average 1.2237999906885795) internal successors, (26286), 21691 states have internal predecessors, (26286), 4391 states have call successors, (4391), 2749 states have call predecessors, (4391), 2749 states have return successors, (4391), 4179 states have call predecessors, (4391), 4391 states have call successors, (4391) [2022-12-13 11:39:54,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28620 states to 28620 states and 35068 transitions. [2022-12-13 11:39:54,112 INFO L78 Accepts]: Start accepts. Automaton has 28620 states and 35068 transitions. Word has length 268 [2022-12-13 11:39:54,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:39:54,112 INFO L495 AbstractCegarLoop]: Abstraction has 28620 states and 35068 transitions. [2022-12-13 11:39:54,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.833333333333332) internal successors, (238), 11 states have internal predecessors, (238), 5 states have call successors, (50), 4 states have call predecessors, (50), 7 states have return successors, (51), 6 states have call predecessors, (51), 5 states have call successors, (51) [2022-12-13 11:39:54,112 INFO L276 IsEmpty]: Start isEmpty. Operand 28620 states and 35068 transitions. [2022-12-13 11:39:54,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-12-13 11:39:54,124 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:39:54,124 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:39:54,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-13 11:39:54,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-12-13 11:39:54,326 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:39:54,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:39:54,327 INFO L85 PathProgramCache]: Analyzing trace with hash -672577107, now seen corresponding path program 1 times [2022-12-13 11:39:54,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:39:54,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91522968] [2022-12-13 11:39:54,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:39:54,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:39:54,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:39:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:39:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 11:39:54,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 11:39:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 11:39:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 11:39:54,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 11:39:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 11:39:54,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 11:39:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 11:39:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 11:39:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 11:39:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 11:39:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-12-13 11:39:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-12-13 11:39:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-12-13 11:39:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-12-13 11:39:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-12-13 11:39:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-12-13 11:39:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-12-13 11:39:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-12-13 11:39:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-12-13 11:39:54,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2022-12-13 11:39:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-12-13 11:39:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2022-12-13 11:39:54,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2022-12-13 11:39:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2022-12-13 11:39:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,654 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 76 proven. 25 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2022-12-13 11:39:54,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:39:54,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91522968] [2022-12-13 11:39:54,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91522968] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:39:54,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553439830] [2022-12-13 11:39:54,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:39:54,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:39:54,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:39:54,655 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:39:54,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-13 11:39:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:39:54,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-13 11:39:54,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:39:54,970 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 267 proven. 42 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 11:39:54,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:39:55,177 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 90 proven. 17 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2022-12-13 11:39:55,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553439830] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:39:55,177 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:39:55,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 16 [2022-12-13 11:39:55,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056198445] [2022-12-13 11:39:55,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:39:55,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 11:39:55,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:39:55,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 11:39:55,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-12-13 11:39:55,180 INFO L87 Difference]: Start difference. First operand 28620 states and 35068 transitions. Second operand has 16 states, 16 states have (on average 15.0) internal successors, (240), 13 states have internal predecessors, (240), 4 states have call successors, (53), 4 states have call predecessors, (53), 9 states have return successors, (55), 7 states have call predecessors, (55), 4 states have call successors, (55) [2022-12-13 11:40:15,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:40:15,168 INFO L93 Difference]: Finished difference Result 59422 states and 73259 transitions. [2022-12-13 11:40:15,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-13 11:40:15,169 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.0) internal successors, (240), 13 states have internal predecessors, (240), 4 states have call successors, (53), 4 states have call predecessors, (53), 9 states have return successors, (55), 7 states have call predecessors, (55), 4 states have call successors, (55) Word has length 277 [2022-12-13 11:40:15,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:40:15,222 INFO L225 Difference]: With dead ends: 59422 [2022-12-13 11:40:15,222 INFO L226 Difference]: Without dead ends: 29929 [2022-12-13 11:40:15,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 649 GetRequests, 607 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=267, Invalid=1293, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 11:40:15,250 INFO L413 NwaCegarLoop]: 639 mSDtfsCounter, 918 mSDsluCounter, 5328 mSDsCounter, 0 mSdLazyCounter, 1837 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 5967 SdHoareTripleChecker+Invalid, 2266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 1837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 11:40:15,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 5967 Invalid, 2266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 1837 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 11:40:15,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29929 states. [2022-12-13 11:40:27,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29929 to 23731. [2022-12-13 11:40:27,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23731 states, 17793 states have (on average 1.2141853537908167) internal successors, (21604), 17966 states have internal predecessors, (21604), 3655 states have call successors, (3655), 2282 states have call predecessors, (3655), 2282 states have return successors, (3647), 3482 states have call predecessors, (3647), 3647 states have call successors, (3647) [2022-12-13 11:40:27,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23731 states to 23731 states and 28906 transitions. [2022-12-13 11:40:27,148 INFO L78 Accepts]: Start accepts. Automaton has 23731 states and 28906 transitions. Word has length 277 [2022-12-13 11:40:27,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:40:27,148 INFO L495 AbstractCegarLoop]: Abstraction has 23731 states and 28906 transitions. [2022-12-13 11:40:27,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.0) internal successors, (240), 13 states have internal predecessors, (240), 4 states have call successors, (53), 4 states have call predecessors, (53), 9 states have return successors, (55), 7 states have call predecessors, (55), 4 states have call successors, (55) [2022-12-13 11:40:27,148 INFO L276 IsEmpty]: Start isEmpty. Operand 23731 states and 28906 transitions. [2022-12-13 11:40:27,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-12-13 11:40:27,159 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:40:27,159 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:40:27,164 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-12-13 11:40:27,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-12-13 11:40:27,360 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:40:27,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:27,361 INFO L85 PathProgramCache]: Analyzing trace with hash 400685671, now seen corresponding path program 1 times [2022-12-13 11:40:27,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:40:27,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957842268] [2022-12-13 11:40:27,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:27,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:40:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:40:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 11:40:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 11:40:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 11:40:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 11:40:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 11:40:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 11:40:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 11:40:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 11:40:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 11:40:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 11:40:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 11:40:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-12-13 11:40:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 11:40:27,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 11:40:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 11:40:27,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 11:40:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-12-13 11:40:27,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-12-13 11:40:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-12-13 11:40:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-12-13 11:40:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2022-12-13 11:40:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-12-13 11:40:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-12-13 11:40:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-12-13 11:40:27,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2022-12-13 11:40:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2022-12-13 11:40:27,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,661 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 103 proven. 2 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2022-12-13 11:40:27,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:40:27,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957842268] [2022-12-13 11:40:27,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957842268] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:40:27,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961432477] [2022-12-13 11:40:27,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:27,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:40:27,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:40:27,662 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:40:27,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 11:40:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:27,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 1120 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 11:40:27,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:40:27,869 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 294 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-12-13 11:40:27,869 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 11:40:27,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961432477] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 11:40:27,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 11:40:27,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 9 [2022-12-13 11:40:27,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848864678] [2022-12-13 11:40:27,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 11:40:27,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 11:40:27,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:40:27,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 11:40:27,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 11:40:27,870 INFO L87 Difference]: Start difference. First operand 23731 states and 28906 transitions. Second operand has 7 states, 7 states have (on average 27.428571428571427) internal successors, (192), 6 states have internal predecessors, (192), 3 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-12-13 11:40:40,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 11:40:40,352 INFO L93 Difference]: Finished difference Result 43161 states and 52691 transitions. [2022-12-13 11:40:40,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 11:40:40,352 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 27.428571428571427) internal successors, (192), 6 states have internal predecessors, (192), 3 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) Word has length 282 [2022-12-13 11:40:40,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 11:40:40,392 INFO L225 Difference]: With dead ends: 43161 [2022-12-13 11:40:40,392 INFO L226 Difference]: Without dead ends: 22799 [2022-12-13 11:40:40,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 338 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-12-13 11:40:40,410 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 519 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 11:40:40,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 1750 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 11:40:40,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22799 states. [2022-12-13 11:40:52,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22799 to 20662. [2022-12-13 11:40:52,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20662 states, 15583 states have (on average 1.1993197715459154) internal successors, (18689), 15735 states have internal predecessors, (18689), 3072 states have call successors, (3072), 2007 states have call predecessors, (3072), 2006 states have return successors, (3067), 2919 states have call predecessors, (3067), 3067 states have call successors, (3067) [2022-12-13 11:40:52,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20662 states to 20662 states and 24828 transitions. [2022-12-13 11:40:52,211 INFO L78 Accepts]: Start accepts. Automaton has 20662 states and 24828 transitions. Word has length 282 [2022-12-13 11:40:52,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 11:40:52,211 INFO L495 AbstractCegarLoop]: Abstraction has 20662 states and 24828 transitions. [2022-12-13 11:40:52,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.428571428571427) internal successors, (192), 6 states have internal predecessors, (192), 3 states have call successors, (27), 3 states have call predecessors, (27), 4 states have return successors, (27), 4 states have call predecessors, (27), 3 states have call successors, (27) [2022-12-13 11:40:52,211 INFO L276 IsEmpty]: Start isEmpty. Operand 20662 states and 24828 transitions. [2022-12-13 11:40:52,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2022-12-13 11:40:52,222 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 11:40:52,222 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 11:40:52,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-12-13 11:40:52,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-12-13 11:40:52,423 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 11:40:52,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 11:40:52,424 INFO L85 PathProgramCache]: Analyzing trace with hash 821364812, now seen corresponding path program 1 times [2022-12-13 11:40:52,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 11:40:52,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900989655] [2022-12-13 11:40:52,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:52,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 11:40:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 11:40:53,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 11:40:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 11:40:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 11:40:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 11:40:53,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 11:40:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 11:40:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 11:40:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 11:40:53,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 11:40:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 11:40:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 11:40:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 11:40:53,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 11:40:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-12-13 11:40:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-12-13 11:40:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-12-13 11:40:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-12-13 11:40:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-12-13 11:40:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-12-13 11:40:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-12-13 11:40:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-12-13 11:40:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-12-13 11:40:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-12-13 11:40:53,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2022-12-13 11:40:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2022-12-13 11:40:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2022-12-13 11:40:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,473 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 44 proven. 53 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2022-12-13 11:40:53,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 11:40:53,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900989655] [2022-12-13 11:40:53,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900989655] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 11:40:53,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246290965] [2022-12-13 11:40:53,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 11:40:53,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 11:40:53,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 11:40:53,474 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 11:40:53,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e585238f-1e0b-4b43-a1a4-25327c90667c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-13 11:40:53,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 11:40:53,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 1139 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 11:40:53,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 11:40:54,158 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 124 proven. 174 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-12-13 11:40:54,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 11:40:56,111 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 30 proven. 67 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2022-12-13 11:40:56,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246290965] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 11:40:56,112 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 11:40:56,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 38 [2022-12-13 11:40:56,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446587058] [2022-12-13 11:40:56,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 11:40:56,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-13 11:40:56,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 11:40:56,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-13 11:40:56,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1276, Unknown=0, NotChecked=0, Total=1406 [2022-12-13 11:40:56,113 INFO L87 Difference]: Start difference. First operand 20662 states and 24828 transitions. Second operand has 38 states, 38 states have (on average 12.026315789473685) internal successors, (457), 38 states have internal predecessors, (457), 17 states have call successors, (77), 7 states have call predecessors, (77), 7 states have return successors, (76), 17 states have call predecessors, (76), 17 states have call successors, (76)