./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.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_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/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_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/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_d171546e-0fda-407a-9b6a-7bca18b397d4/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 5d72e5e7abaa750c1c0009f2e3addca35915e1b949637f5a49ed633aadc3fe53 --- 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 18:27:36,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 18:27:36,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 18:27:36,650 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 18:27:36,651 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 18:27:36,652 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 18:27:36,653 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 18:27:36,654 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 18:27:36,655 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 18:27:36,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 18:27:36,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 18:27:36,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 18:27:36,658 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 18:27:36,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 18:27:36,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 18:27:36,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 18:27:36,662 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 18:27:36,663 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 18:27:36,664 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 18:27:36,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 18:27:36,667 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 18:27:36,668 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 18:27:36,669 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 18:27:36,670 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 18:27:36,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 18:27:36,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 18:27:36,680 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 18:27:36,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 18:27:36,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 18:27:36,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 18:27:36,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 18:27:36,683 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 18:27:36,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 18:27:36,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 18:27:36,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 18:27:36,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 18:27:36,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 18:27:36,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 18:27:36,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 18:27:36,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 18:27:36,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 18:27:36,689 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 18:27:36,714 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 18:27:36,714 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 18:27:36,714 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 18:27:36,715 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 18:27:36,715 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 18:27:36,719 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 18:27:36,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 18:27:36,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 18:27:36,720 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 18:27:36,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 18:27:36,721 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 18:27:36,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 18:27:36,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 18:27:36,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 18:27:36,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 18:27:36,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 18:27:36,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 18:27:36,722 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 18:27:36,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 18:27:36,722 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 18:27:36,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 18:27:36,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 18:27:36,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 18:27:36,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 18:27:36,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:27:36,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 18:27:36,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 18:27:36,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 18:27:36,724 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 18:27:36,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 18:27:36,724 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 18:27:36,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 18:27:36,724 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 18:27:36,725 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 18:27:36,725 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 18:27:36,725 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_d171546e-0fda-407a-9b6a-7bca18b397d4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d72e5e7abaa750c1c0009f2e3addca35915e1b949637f5a49ed633aadc3fe53 [2022-12-13 18:27:36,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 18:27:36,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 18:27:36,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 18:27:36,931 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 18:27:36,931 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 18:27:36,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2022-12-13 18:27:39,634 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 18:27:39,822 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 18:27:39,823 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2022-12-13 18:27:39,832 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/data/35e98c3e3/cd1345fdd794441496f2aa279687bb56/FLAG10f082ae2 [2022-12-13 18:27:39,844 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/data/35e98c3e3/cd1345fdd794441496f2aa279687bb56 [2022-12-13 18:27:39,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 18:27:39,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 18:27:39,847 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 18:27:39,847 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 18:27:39,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 18:27:39,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:27:39" (1/1) ... [2022-12-13 18:27:39,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7579a9bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:27:39, skipping insertion in model container [2022-12-13 18:27:39,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 06:27:39" (1/1) ... [2022-12-13 18:27:39,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 18:27:39,890 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 18:27:40,053 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_d171546e-0fda-407a-9b6a-7bca18b397d4/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c[14680,14693] [2022-12-13 18:27:40,056 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:27:40,065 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 18:27:40,112 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_d171546e-0fda-407a-9b6a-7bca18b397d4/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c[14680,14693] [2022-12-13 18:27:40,113 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 18:27:40,125 INFO L208 MainTranslator]: Completed translation [2022-12-13 18:27:40,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:27:40 WrapperNode [2022-12-13 18:27:40,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 18:27:40,126 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 18:27:40,126 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 18:27:40,127 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 18:27:40,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:27:40" (1/1) ... [2022-12-13 18:27:40,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:27:40" (1/1) ... [2022-12-13 18:27:40,168 INFO L138 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 479 [2022-12-13 18:27:40,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 18:27:40,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 18:27:40,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 18:27:40,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 18:27:40,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:27:40" (1/1) ... [2022-12-13 18:27:40,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:27:40" (1/1) ... [2022-12-13 18:27:40,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:27:40" (1/1) ... [2022-12-13 18:27:40,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:27:40" (1/1) ... [2022-12-13 18:27:40,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:27:40" (1/1) ... [2022-12-13 18:27:40,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:27:40" (1/1) ... [2022-12-13 18:27:40,219 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:27:40" (1/1) ... [2022-12-13 18:27:40,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:27:40" (1/1) ... [2022-12-13 18:27:40,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 18:27:40,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 18:27:40,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 18:27:40,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 18:27:40,227 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:27:40" (1/1) ... [2022-12-13 18:27:40,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 18:27:40,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:27:40,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 18:27:40,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 18:27:40,295 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2022-12-13 18:27:40,296 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2022-12-13 18:27:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 18:27:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2022-12-13 18:27:40,296 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2022-12-13 18:27:40,296 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2022-12-13 18:27:40,296 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2022-12-13 18:27:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2022-12-13 18:27:40,297 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2022-12-13 18:27:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-12-13 18:27:40,297 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-12-13 18:27:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 18:27:40,297 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2022-12-13 18:27:40,297 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2022-12-13 18:27:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 18:27:40,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 18:27:40,298 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2022-12-13 18:27:40,298 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2022-12-13 18:27:40,378 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 18:27:40,380 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 18:27:40,777 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 18:27:40,785 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 18:27:40,785 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 18:27:40,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:27:40 BoogieIcfgContainer [2022-12-13 18:27:40,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 18:27:40,791 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 18:27:40,791 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 18:27:40,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 18:27:40,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 06:27:39" (1/3) ... [2022-12-13 18:27:40,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@388eb212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:27:40, skipping insertion in model container [2022-12-13 18:27:40,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 06:27:40" (2/3) ... [2022-12-13 18:27:40,796 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@388eb212 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 06:27:40, skipping insertion in model container [2022-12-13 18:27:40,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 06:27:40" (3/3) ... [2022-12-13 18:27:40,797 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2022-12-13 18:27:40,813 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 18:27:40,814 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 18:27:40,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 18:27:40,857 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;@304f5fee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 18:27:40,858 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 18:27:40,862 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 140 states have (on average 1.5571428571428572) internal successors, (218), 142 states have internal predecessors, (218), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-12-13 18:27:40,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 18:27:40,870 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:40,871 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 18:27:40,871 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:40,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:40,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1699901086, now seen corresponding path program 1 times [2022-12-13 18:27:40,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:40,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12546604] [2022-12-13 18:27:40,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:40,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:41,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:27:41,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:41,066 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 18:27:41,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:41,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12546604] [2022-12-13 18:27:41,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12546604] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:41,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:41,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 18:27:41,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091457811] [2022-12-13 18:27:41,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:41,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 18:27:41,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:41,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 18:27:41,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 18:27:41,103 INFO L87 Difference]: Start difference. First operand has 180 states, 140 states have (on average 1.5571428571428572) internal successors, (218), 142 states have internal predecessors, (218), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) 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 18:27:41,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:41,137 INFO L93 Difference]: Finished difference Result 340 states and 557 transitions. [2022-12-13 18:27:41,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 18:27:41,138 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 18:27:41,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:41,145 INFO L225 Difference]: With dead ends: 340 [2022-12-13 18:27:41,145 INFO L226 Difference]: Without dead ends: 176 [2022-12-13 18:27:41,148 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 18:27:41,150 INFO L413 NwaCegarLoop]: 273 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, 273 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 18:27:41,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:27:41,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-12-13 18:27:41,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-12-13 18:27:41,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 137 states have (on average 1.5401459854014599) internal successors, (211), 138 states have internal predecessors, (211), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-12-13 18:27:41,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 273 transitions. [2022-12-13 18:27:41,199 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 273 transitions. Word has length 28 [2022-12-13 18:27:41,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:41,199 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 273 transitions. [2022-12-13 18:27:41,200 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 18:27:41,200 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 273 transitions. [2022-12-13 18:27:41,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-13 18:27:41,201 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:41,201 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 18:27:41,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 18:27:41,202 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:41,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:41,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1918755804, now seen corresponding path program 1 times [2022-12-13 18:27:41,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:41,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137475365] [2022-12-13 18:27:41,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:41,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:41,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 18:27:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:41,360 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 18:27:41,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:41,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137475365] [2022-12-13 18:27:41,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137475365] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:41,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:41,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 18:27:41,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786822760] [2022-12-13 18:27:41,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:41,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 18:27:41,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:41,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 18:27:41,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 18:27:41,363 INFO L87 Difference]: Start difference. First operand 176 states and 273 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 18:27:41,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:41,439 INFO L93 Difference]: Finished difference Result 338 states and 520 transitions. [2022-12-13 18:27:41,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 18:27:41,439 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 18:27:41,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:41,441 INFO L225 Difference]: With dead ends: 338 [2022-12-13 18:27:41,441 INFO L226 Difference]: Without dead ends: 176 [2022-12-13 18:27:41,442 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 18:27:41,444 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 137 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 1160 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 18:27:41,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 1160 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:27:41,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-12-13 18:27:41,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-12-13 18:27:41,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 137 states have (on average 1.4525547445255473) internal successors, (199), 138 states have internal predecessors, (199), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-12-13 18:27:41,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 261 transitions. [2022-12-13 18:27:41,458 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 261 transitions. Word has length 28 [2022-12-13 18:27:41,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:41,458 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 261 transitions. [2022-12-13 18:27:41,459 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 18:27:41,459 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 261 transitions. [2022-12-13 18:27:41,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-12-13 18:27:41,460 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:41,460 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 18:27:41,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 18:27:41,460 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:41,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:41,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1355709569, now seen corresponding path program 1 times [2022-12-13 18:27:41,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:41,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711869434] [2022-12-13 18:27:41,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:41,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:41,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:41,604 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 18:27:41,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:41,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711869434] [2022-12-13 18:27:41,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711869434] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:41,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:41,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:27:41,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637292210] [2022-12-13 18:27:41,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:41,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:27:41,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:41,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:27:41,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:27:41,606 INFO L87 Difference]: Start difference. First operand 176 states and 261 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 18:27:41,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:41,657 INFO L93 Difference]: Finished difference Result 339 states and 512 transitions. [2022-12-13 18:27:41,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:27:41,657 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 18:27:41,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:41,659 INFO L225 Difference]: With dead ends: 339 [2022-12-13 18:27:41,659 INFO L226 Difference]: Without dead ends: 180 [2022-12-13 18:27:41,660 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 18:27:41,661 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 5 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 755 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 18:27:41,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 755 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:27:41,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-12-13 18:27:41,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2022-12-13 18:27:41,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 140 states have (on average 1.4428571428571428) internal successors, (202), 141 states have internal predecessors, (202), 31 states have call successors, (31), 8 states have call predecessors, (31), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-12-13 18:27:41,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 264 transitions. [2022-12-13 18:27:41,678 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 264 transitions. Word has length 39 [2022-12-13 18:27:41,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:41,678 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 264 transitions. [2022-12-13 18:27:41,678 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 18:27:41,678 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 264 transitions. [2022-12-13 18:27:41,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-13 18:27:41,680 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:41,680 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 18:27:41,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 18:27:41,680 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:41,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:41,681 INFO L85 PathProgramCache]: Analyzing trace with hash -2086587661, now seen corresponding path program 1 times [2022-12-13 18:27:41,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:41,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25747764] [2022-12-13 18:27:41,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:41,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:41,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:41,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:27:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:41,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 18:27:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:41,764 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 18:27:41,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:41,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25747764] [2022-12-13 18:27:41,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25747764] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:41,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:41,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:27:41,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395528527] [2022-12-13 18:27:41,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:41,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:27:41,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:41,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:27:41,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:27:41,767 INFO L87 Difference]: Start difference. First operand 180 states and 264 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 18:27:41,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:41,818 INFO L93 Difference]: Finished difference Result 494 states and 735 transitions. [2022-12-13 18:27:41,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:27:41,819 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 18:27:41,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:41,821 INFO L225 Difference]: With dead ends: 494 [2022-12-13 18:27:41,822 INFO L226 Difference]: Without dead ends: 331 [2022-12-13 18:27:41,823 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 18:27:41,824 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 212 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 552 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 18:27:41,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 552 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:27:41,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-12-13 18:27:41,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 326. [2022-12-13 18:27:41,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 249 states have (on average 1.461847389558233) internal successors, (364), 251 states have internal predecessors, (364), 60 states have call successors, (60), 16 states have call predecessors, (60), 16 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2022-12-13 18:27:41,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 484 transitions. [2022-12-13 18:27:41,861 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 484 transitions. Word has length 55 [2022-12-13 18:27:41,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:41,861 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 484 transitions. [2022-12-13 18:27:41,861 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 18:27:41,861 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 484 transitions. [2022-12-13 18:27:41,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 18:27:41,863 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:41,863 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 18:27:41,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 18:27:41,863 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:41,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:41,864 INFO L85 PathProgramCache]: Analyzing trace with hash 651939805, now seen corresponding path program 1 times [2022-12-13 18:27:41,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:41,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161596498] [2022-12-13 18:27:41,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:41,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:41,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:41,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:41,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:27:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:41,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 18:27:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:41,923 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 18:27:41,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:41,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161596498] [2022-12-13 18:27:41,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161596498] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:41,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:41,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:27:41,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936274565] [2022-12-13 18:27:41,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:41,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:27:41,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:41,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:27:41,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:27:41,925 INFO L87 Difference]: Start difference. First operand 326 states and 484 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 18:27:41,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:41,996 INFO L93 Difference]: Finished difference Result 917 states and 1373 transitions. [2022-12-13 18:27:41,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:27:41,997 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 18:27:41,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:42,002 INFO L225 Difference]: With dead ends: 917 [2022-12-13 18:27:42,002 INFO L226 Difference]: Without dead ends: 608 [2022-12-13 18:27:42,003 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 18:27:42,005 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 214 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 573 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 18:27:42,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 573 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:27:42,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-12-13 18:27:42,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 602. [2022-12-13 18:27:42,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 453 states have (on average 1.4724061810154525) internal successors, (667), 457 states have internal predecessors, (667), 117 states have call successors, (117), 31 states have call predecessors, (117), 31 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2022-12-13 18:27:42,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 901 transitions. [2022-12-13 18:27:42,060 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 901 transitions. Word has length 56 [2022-12-13 18:27:42,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:42,060 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 901 transitions. [2022-12-13 18:27:42,061 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 18:27:42,061 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 901 transitions. [2022-12-13 18:27:42,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 18:27:42,062 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:42,062 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 18:27:42,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 18:27:42,062 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:42,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:42,062 INFO L85 PathProgramCache]: Analyzing trace with hash -627923873, now seen corresponding path program 1 times [2022-12-13 18:27:42,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:42,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614431496] [2022-12-13 18:27:42,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:42,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:42,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:42,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:42,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:27:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:42,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 18:27:42,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:42,151 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 18:27:42,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:42,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614431496] [2022-12-13 18:27:42,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614431496] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:42,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:42,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:27:42,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42237671] [2022-12-13 18:27:42,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:42,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:27:42,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:42,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:27:42,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:27:42,154 INFO L87 Difference]: Start difference. First operand 602 states and 901 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 18:27:42,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:42,510 INFO L93 Difference]: Finished difference Result 1639 states and 2507 transitions. [2022-12-13 18:27:42,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:27:42,511 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 18:27:42,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:42,517 INFO L225 Difference]: With dead ends: 1639 [2022-12-13 18:27:42,517 INFO L226 Difference]: Without dead ends: 1054 [2022-12-13 18:27:42,520 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 18:27:42,521 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 633 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:27:42,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 691 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:27:42,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1054 states. [2022-12-13 18:27:42,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1054 to 690. [2022-12-13 18:27:42,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 528 states have (on average 1.456439393939394) internal successors, (769), 531 states have internal predecessors, (769), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-12-13 18:27:42,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1017 transitions. [2022-12-13 18:27:42,606 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1017 transitions. Word has length 56 [2022-12-13 18:27:42,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:42,606 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 1017 transitions. [2022-12-13 18:27:42,606 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 18:27:42,606 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1017 transitions. [2022-12-13 18:27:42,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-12-13 18:27:42,608 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:42,608 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 18:27:42,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 18:27:42,608 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:42,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:42,609 INFO L85 PathProgramCache]: Analyzing trace with hash 707313810, now seen corresponding path program 1 times [2022-12-13 18:27:42,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:42,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688063167] [2022-12-13 18:27:42,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:42,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:42,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:42,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:27:42,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:42,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-12-13 18:27:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:42,705 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 18:27:42,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:42,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688063167] [2022-12-13 18:27:42,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688063167] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:42,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:42,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 18:27:42,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582950957] [2022-12-13 18:27:42,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:42,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:27:42,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:42,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:27:42,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 18:27:42,707 INFO L87 Difference]: Start difference. First operand 690 states and 1017 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 18:27:43,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:43,018 INFO L93 Difference]: Finished difference Result 1643 states and 2507 transitions. [2022-12-13 18:27:43,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 18:27:43,018 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 18:27:43,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:43,024 INFO L225 Difference]: With dead ends: 1643 [2022-12-13 18:27:43,024 INFO L226 Difference]: Without dead ends: 1058 [2022-12-13 18:27:43,026 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 18:27:43,027 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 630 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:27:43,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [630 Valid, 693 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:27:43,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2022-12-13 18:27:43,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 698. [2022-12-13 18:27:43,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 536 states have (on average 1.4496268656716418) internal successors, (777), 539 states have internal predecessors, (777), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-12-13 18:27:43,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1025 transitions. [2022-12-13 18:27:43,112 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1025 transitions. Word has length 57 [2022-12-13 18:27:43,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:43,112 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 1025 transitions. [2022-12-13 18:27:43,112 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 18:27:43,113 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1025 transitions. [2022-12-13 18:27:43,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-12-13 18:27:43,113 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:43,114 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 18:27:43,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 18:27:43,114 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:43,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:43,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1187610108, now seen corresponding path program 1 times [2022-12-13 18:27:43,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:43,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953795716] [2022-12-13 18:27:43,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:43,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:43,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:43,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:43,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:27:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:43,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-12-13 18:27:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:43,231 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 18:27:43,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:43,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953795716] [2022-12-13 18:27:43,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953795716] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:43,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:43,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:27:43,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184233858] [2022-12-13 18:27:43,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:43,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:27:43,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:43,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:27:43,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:27:43,233 INFO L87 Difference]: Start difference. First operand 698 states and 1025 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 18:27:43,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:43,535 INFO L93 Difference]: Finished difference Result 1643 states and 2499 transitions. [2022-12-13 18:27:43,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:27:43,536 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 18:27:43,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:43,540 INFO L225 Difference]: With dead ends: 1643 [2022-12-13 18:27:43,540 INFO L226 Difference]: Without dead ends: 1058 [2022-12-13 18:27:43,541 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 18:27:43,542 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 186 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:27:43,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 660 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:27:43,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1058 states. [2022-12-13 18:27:43,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1058 to 698. [2022-12-13 18:27:43,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 536 states have (on average 1.4421641791044777) internal successors, (773), 539 states have internal predecessors, (773), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-12-13 18:27:43,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1021 transitions. [2022-12-13 18:27:43,590 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1021 transitions. Word has length 59 [2022-12-13 18:27:43,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:43,590 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 1021 transitions. [2022-12-13 18:27:43,590 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 18:27:43,590 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1021 transitions. [2022-12-13 18:27:43,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-12-13 18:27:43,591 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:43,591 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 18:27:43,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 18:27:43,591 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:43,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:43,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1980797779, now seen corresponding path program 1 times [2022-12-13 18:27:43,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:43,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502085117] [2022-12-13 18:27:43,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:43,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:43,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:43,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:27:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:43,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 18:27:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:43,762 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 18:27:43,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:43,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502085117] [2022-12-13 18:27:43,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502085117] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:43,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:43,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:27:43,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839274521] [2022-12-13 18:27:43,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:43,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:27:43,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:43,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:27:43,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:27:43,764 INFO L87 Difference]: Start difference. First operand 698 states and 1021 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 18:27:43,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:43,850 INFO L93 Difference]: Finished difference Result 1303 states and 1932 transitions. [2022-12-13 18:27:43,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:27:43,851 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 18:27:43,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:43,854 INFO L225 Difference]: With dead ends: 1303 [2022-12-13 18:27:43,854 INFO L226 Difference]: Without dead ends: 718 [2022-12-13 18:27:43,856 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 18:27:43,857 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 6 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 767 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 18:27:43,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 767 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:27:43,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2022-12-13 18:27:43,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2022-12-13 18:27:43,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 552 states have (on average 1.4293478260869565) internal successors, (789), 555 states have internal predecessors, (789), 124 states have call successors, (124), 41 states have call predecessors, (124), 41 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-12-13 18:27:43,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1037 transitions. [2022-12-13 18:27:43,954 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1037 transitions. Word has length 60 [2022-12-13 18:27:43,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:43,954 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 1037 transitions. [2022-12-13 18:27:43,955 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 18:27:43,955 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1037 transitions. [2022-12-13 18:27:43,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-12-13 18:27:43,956 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:43,956 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 18:27:43,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 18:27:43,957 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:43,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:43,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1474712019, now seen corresponding path program 1 times [2022-12-13 18:27:43,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:43,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553086502] [2022-12-13 18:27:43,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:43,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:27:44,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 18:27:44,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 18:27:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,095 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 18:27:44,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:44,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553086502] [2022-12-13 18:27:44,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553086502] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:44,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:44,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:27:44,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231221475] [2022-12-13 18:27:44,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:44,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:27:44,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:44,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:27:44,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:27:44,097 INFO L87 Difference]: Start difference. First operand 718 states and 1037 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 18:27:44,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:44,193 INFO L93 Difference]: Finished difference Result 1343 states and 1976 transitions. [2022-12-13 18:27:44,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:27:44,194 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 18:27:44,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:44,197 INFO L225 Difference]: With dead ends: 1343 [2022-12-13 18:27:44,197 INFO L226 Difference]: Without dead ends: 738 [2022-12-13 18:27:44,199 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 18:27:44,199 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 6 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 753 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 18:27:44,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 753 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:27:44,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2022-12-13 18:27:44,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2022-12-13 18:27:44,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 568 states have (on average 1.4172535211267605) internal successors, (805), 571 states have internal predecessors, (805), 124 states have call successors, (124), 45 states have call predecessors, (124), 45 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-12-13 18:27:44,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1053 transitions. [2022-12-13 18:27:44,256 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1053 transitions. Word has length 68 [2022-12-13 18:27:44,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:44,256 INFO L495 AbstractCegarLoop]: Abstraction has 738 states and 1053 transitions. [2022-12-13 18:27:44,256 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 18:27:44,256 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1053 transitions. [2022-12-13 18:27:44,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-13 18:27:44,257 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:44,257 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 18:27:44,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 18:27:44,257 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:44,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:44,257 INFO L85 PathProgramCache]: Analyzing trace with hash -799213667, now seen corresponding path program 1 times [2022-12-13 18:27:44,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:44,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543745410] [2022-12-13 18:27:44,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:44,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:27:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 18:27:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 18:27:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 18:27:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,360 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 18:27:44,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:44,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543745410] [2022-12-13 18:27:44,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543745410] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:44,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:44,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:27:44,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769699704] [2022-12-13 18:27:44,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:44,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:27:44,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:44,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:27:44,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:27:44,362 INFO L87 Difference]: Start difference. First operand 738 states and 1053 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 18:27:44,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:44,456 INFO L93 Difference]: Finished difference Result 1379 states and 1992 transitions. [2022-12-13 18:27:44,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:27:44,456 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 18:27:44,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:44,460 INFO L225 Difference]: With dead ends: 1379 [2022-12-13 18:27:44,460 INFO L226 Difference]: Without dead ends: 754 [2022-12-13 18:27:44,462 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 18:27:44,462 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 5 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 762 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 18:27:44,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 762 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:27:44,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-12-13 18:27:44,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2022-12-13 18:27:44,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 580 states have (on average 1.4086206896551725) internal successors, (817), 583 states have internal predecessors, (817), 124 states have call successors, (124), 49 states have call predecessors, (124), 49 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-12-13 18:27:44,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1065 transitions. [2022-12-13 18:27:44,505 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1065 transitions. Word has length 76 [2022-12-13 18:27:44,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:44,505 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 1065 transitions. [2022-12-13 18:27:44,505 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 18:27:44,505 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1065 transitions. [2022-12-13 18:27:44,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-12-13 18:27:44,506 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:44,506 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 18:27:44,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 18:27:44,507 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:44,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:44,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1597245636, now seen corresponding path program 1 times [2022-12-13 18:27:44,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:44,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274747699] [2022-12-13 18:27:44,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:44,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:27:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 18:27:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 18:27:44,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 18:27:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,637 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 18:27:44,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:44,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274747699] [2022-12-13 18:27:44,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274747699] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:44,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:44,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:27:44,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142047648] [2022-12-13 18:27:44,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:44,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:27:44,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:44,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:27:44,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:27:44,638 INFO L87 Difference]: Start difference. First operand 754 states and 1065 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 18:27:44,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:44,729 INFO L93 Difference]: Finished difference Result 1415 states and 2032 transitions. [2022-12-13 18:27:44,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:27:44,730 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 18:27:44,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:44,732 INFO L225 Difference]: With dead ends: 1415 [2022-12-13 18:27:44,733 INFO L226 Difference]: Without dead ends: 774 [2022-12-13 18:27:44,734 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 18:27:44,734 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 6 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 753 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 18:27:44,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 753 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:27:44,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2022-12-13 18:27:44,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 774. [2022-12-13 18:27:44,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 596 states have (on average 1.3976510067114094) internal successors, (833), 599 states have internal predecessors, (833), 124 states have call successors, (124), 53 states have call predecessors, (124), 53 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-12-13 18:27:44,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1081 transitions. [2022-12-13 18:27:44,779 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1081 transitions. Word has length 76 [2022-12-13 18:27:44,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:44,780 INFO L495 AbstractCegarLoop]: Abstraction has 774 states and 1081 transitions. [2022-12-13 18:27:44,780 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 18:27:44,780 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1081 transitions. [2022-12-13 18:27:44,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-13 18:27:44,782 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:44,782 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 18:27:44,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 18:27:44,782 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:44,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:44,782 INFO L85 PathProgramCache]: Analyzing trace with hash 837268772, now seen corresponding path program 1 times [2022-12-13 18:27:44,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:44,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48054889] [2022-12-13 18:27:44,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:44,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:44,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:27:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 18:27:44,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 18:27:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 18:27:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 18:27:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:44,958 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 18:27:44,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:44,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48054889] [2022-12-13 18:27:44,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48054889] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:44,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:44,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:27:44,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532274911] [2022-12-13 18:27:44,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:44,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:27:44,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:44,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:27:44,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:27:44,959 INFO L87 Difference]: Start difference. First operand 774 states and 1081 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 18:27:45,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:45,051 INFO L93 Difference]: Finished difference Result 1459 states and 2060 transitions. [2022-12-13 18:27:45,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:27:45,052 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 18:27:45,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:45,055 INFO L225 Difference]: With dead ends: 1459 [2022-12-13 18:27:45,055 INFO L226 Difference]: Without dead ends: 798 [2022-12-13 18:27:45,056 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 18:27:45,057 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 7 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 764 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 18:27:45,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 764 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:27:45,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2022-12-13 18:27:45,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 798. [2022-12-13 18:27:45,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 616 states have (on average 1.3847402597402598) internal successors, (853), 619 states have internal predecessors, (853), 124 states have call successors, (124), 57 states have call predecessors, (124), 57 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2022-12-13 18:27:45,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1101 transitions. [2022-12-13 18:27:45,133 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1101 transitions. Word has length 84 [2022-12-13 18:27:45,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:45,134 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 1101 transitions. [2022-12-13 18:27:45,134 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 18:27:45,134 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1101 transitions. [2022-12-13 18:27:45,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-12-13 18:27:45,137 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:45,137 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 18:27:45,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 18:27:45,137 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:45,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:45,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1610117125, now seen corresponding path program 1 times [2022-12-13 18:27:45,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:45,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865104445] [2022-12-13 18:27:45,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:45,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:45,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:45,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:27:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:45,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 18:27:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:45,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 18:27:45,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:45,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 18:27:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:45,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 18:27:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:45,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 18:27:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:45,373 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 18:27:45,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:45,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865104445] [2022-12-13 18:27:45,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865104445] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:45,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:45,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:27:45,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609401248] [2022-12-13 18:27:45,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:45,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:27:45,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:45,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:27:45,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:27:45,375 INFO L87 Difference]: Start difference. First operand 798 states and 1101 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 18:27:45,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:45,699 INFO L93 Difference]: Finished difference Result 2313 states and 3243 transitions. [2022-12-13 18:27:45,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 18:27:45,699 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 18:27:45,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:45,704 INFO L225 Difference]: With dead ends: 2313 [2022-12-13 18:27:45,704 INFO L226 Difference]: Without dead ends: 1628 [2022-12-13 18:27:45,706 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 18:27:45,706 INFO L413 NwaCegarLoop]: 349 mSDtfsCounter, 324 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1919 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:27:45,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1919 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:27:45,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1628 states. [2022-12-13 18:27:45,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1628 to 1082. [2022-12-13 18:27:45,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 827 states have (on average 1.3724304715840387) internal successors, (1135), 832 states have internal predecessors, (1135), 172 states have call successors, (172), 82 states have call predecessors, (172), 82 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2022-12-13 18:27:45,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1479 transitions. [2022-12-13 18:27:45,795 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1479 transitions. Word has length 87 [2022-12-13 18:27:45,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:45,795 INFO L495 AbstractCegarLoop]: Abstraction has 1082 states and 1479 transitions. [2022-12-13 18:27:45,795 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 18:27:45,795 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1479 transitions. [2022-12-13 18:27:45,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 18:27:45,796 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:45,796 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 18:27:45,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 18:27:45,796 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:45,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:45,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1820782171, now seen corresponding path program 1 times [2022-12-13 18:27:45,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:45,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986179419] [2022-12-13 18:27:45,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:45,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:45,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:45,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:27:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:45,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 18:27:45,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:45,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 18:27:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:45,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 18:27:45,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:45,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 18:27:45,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:45,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 18:27:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:45,904 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 18:27:45,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:45,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986179419] [2022-12-13 18:27:45,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986179419] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:45,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:45,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:27:45,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6643204] [2022-12-13 18:27:45,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:45,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:27:45,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:45,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:27:45,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:27:45,906 INFO L87 Difference]: Start difference. First operand 1082 states and 1479 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 18:27:45,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:45,995 INFO L93 Difference]: Finished difference Result 2007 states and 2768 transitions. [2022-12-13 18:27:45,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:27:45,996 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 18:27:45,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:45,999 INFO L225 Difference]: With dead ends: 2007 [2022-12-13 18:27:45,999 INFO L226 Difference]: Without dead ends: 1106 [2022-12-13 18:27:46,001 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 18:27:46,001 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 5 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 762 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 18:27:46,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 762 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:27:46,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2022-12-13 18:27:46,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1106. [2022-12-13 18:27:46,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 845 states have (on average 1.3644970414201183) internal successors, (1153), 850 states have internal predecessors, (1153), 172 states have call successors, (172), 88 states have call predecessors, (172), 88 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2022-12-13 18:27:46,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1497 transitions. [2022-12-13 18:27:46,082 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1497 transitions. Word has length 91 [2022-12-13 18:27:46,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:46,082 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1497 transitions. [2022-12-13 18:27:46,083 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 18:27:46,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1497 transitions. [2022-12-13 18:27:46,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-13 18:27:46,083 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:46,083 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 18:27:46,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 18:27:46,084 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:46,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:46,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1723609181, now seen corresponding path program 1 times [2022-12-13 18:27:46,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:46,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137187348] [2022-12-13 18:27:46,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:46,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:46,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:46,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:27:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:46,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 18:27:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:46,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 18:27:46,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:46,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 18:27:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:46,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 18:27:46,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:46,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 18:27:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:46,282 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 18:27:46,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:46,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137187348] [2022-12-13 18:27:46,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137187348] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:46,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:46,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:27:46,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689795384] [2022-12-13 18:27:46,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:46,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:27:46,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:46,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:27:46,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:27:46,284 INFO L87 Difference]: Start difference. First operand 1106 states and 1497 transitions. Second operand has 8 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 18:27:46,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:46,592 INFO L93 Difference]: Finished difference Result 1536 states and 2187 transitions. [2022-12-13 18:27:46,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:27:46,593 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 90 [2022-12-13 18:27:46,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:46,598 INFO L225 Difference]: With dead ends: 1536 [2022-12-13 18:27:46,598 INFO L226 Difference]: Without dead ends: 1534 [2022-12-13 18:27:46,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:27:46,599 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 329 mSDsluCounter, 2086 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 2532 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:27:46,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 2532 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:27:46,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2022-12-13 18:27:46,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1114. [2022-12-13 18:27:46,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 849 states have (on average 1.3627797408716136) internal successors, (1157), 856 states have internal predecessors, (1157), 174 states have call successors, (174), 90 states have call predecessors, (174), 90 states have return successors, (174), 167 states have call predecessors, (174), 174 states have call successors, (174) [2022-12-13 18:27:46,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1505 transitions. [2022-12-13 18:27:46,692 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1505 transitions. Word has length 90 [2022-12-13 18:27:46,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:46,693 INFO L495 AbstractCegarLoop]: Abstraction has 1114 states and 1505 transitions. [2022-12-13 18:27:46,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 18:27:46,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1505 transitions. [2022-12-13 18:27:46,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-13 18:27:46,694 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:46,694 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 18:27:46,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 18:27:46,694 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:46,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:46,694 INFO L85 PathProgramCache]: Analyzing trace with hash 2094931668, now seen corresponding path program 1 times [2022-12-13 18:27:46,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:46,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398113520] [2022-12-13 18:27:46,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:46,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:46,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:46,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:27:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:46,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 18:27:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:46,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 18:27:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:46,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 18:27:46,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:46,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 18:27:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:46,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 18:27:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:46,801 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 18:27:46,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:46,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398113520] [2022-12-13 18:27:46,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398113520] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:46,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:46,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:27:46,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205845166] [2022-12-13 18:27:46,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:46,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:27:46,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:46,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:27:46,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:27:46,804 INFO L87 Difference]: Start difference. First operand 1114 states and 1505 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 18:27:47,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:47,086 INFO L93 Difference]: Finished difference Result 2204 states and 3042 transitions. [2022-12-13 18:27:47,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 18:27:47,086 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 18:27:47,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:47,091 INFO L225 Difference]: With dead ends: 2204 [2022-12-13 18:27:47,091 INFO L226 Difference]: Without dead ends: 1353 [2022-12-13 18:27:47,092 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 18:27:47,093 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 371 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:27:47,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 1890 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:27:47,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2022-12-13 18:27:47,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1117. [2022-12-13 18:27:47,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 863 states have (on average 1.3534183082271147) internal successors, (1168), 875 states have internal predecessors, (1168), 162 states have call successors, (162), 91 states have call predecessors, (162), 91 states have return successors, (162), 150 states have call predecessors, (162), 162 states have call successors, (162) [2022-12-13 18:27:47,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1492 transitions. [2022-12-13 18:27:47,182 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1492 transitions. Word has length 93 [2022-12-13 18:27:47,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:47,182 INFO L495 AbstractCegarLoop]: Abstraction has 1117 states and 1492 transitions. [2022-12-13 18:27:47,182 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 18:27:47,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1492 transitions. [2022-12-13 18:27:47,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-12-13 18:27:47,183 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:47,183 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 18:27:47,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 18:27:47,183 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:47,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:47,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1811425973, now seen corresponding path program 1 times [2022-12-13 18:27:47,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:47,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777970815] [2022-12-13 18:27:47,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:47,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:47,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:47,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:27:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:47,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 18:27:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:47,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 18:27:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:47,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 18:27:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:47,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 18:27:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:47,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 18:27:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:47,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 18:27:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:47,361 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 18:27:47,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:47,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777970815] [2022-12-13 18:27:47,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777970815] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:47,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:47,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:27:47,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453880311] [2022-12-13 18:27:47,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:47,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:27:47,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:47,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:27:47,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:27:47,362 INFO L87 Difference]: Start difference. First operand 1117 states and 1492 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 18:27:47,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:47,649 INFO L93 Difference]: Finished difference Result 2255 states and 3097 transitions. [2022-12-13 18:27:47,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 18:27:47,650 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 18:27:47,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:47,654 INFO L225 Difference]: With dead ends: 2255 [2022-12-13 18:27:47,654 INFO L226 Difference]: Without dead ends: 1381 [2022-12-13 18:27:47,656 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 18:27:47,657 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 286 mSDsluCounter, 1668 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 2040 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:27:47,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 2040 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:27:47,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2022-12-13 18:27:47,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1008. [2022-12-13 18:27:47,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 781 states have (on average 1.3559539052496798) internal successors, (1059), 791 states have internal predecessors, (1059), 145 states have call successors, (145), 81 states have call predecessors, (145), 81 states have return successors, (145), 135 states have call predecessors, (145), 145 states have call successors, (145) [2022-12-13 18:27:47,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1349 transitions. [2022-12-13 18:27:47,767 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1349 transitions. Word has length 95 [2022-12-13 18:27:47,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:47,767 INFO L495 AbstractCegarLoop]: Abstraction has 1008 states and 1349 transitions. [2022-12-13 18:27:47,767 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 18:27:47,767 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1349 transitions. [2022-12-13 18:27:47,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-13 18:27:47,768 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:47,768 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 18:27:47,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 18:27:47,768 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:47,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:47,769 INFO L85 PathProgramCache]: Analyzing trace with hash -375753860, now seen corresponding path program 1 times [2022-12-13 18:27:47,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:47,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036161770] [2022-12-13 18:27:47,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:47,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:47,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:47,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:47,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:27:47,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:47,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 18:27:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:47,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 18:27:47,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:47,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 18:27:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:47,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 18:27:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:47,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 18:27:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:47,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 18:27:47,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:47,954 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 18:27:47,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:47,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036161770] [2022-12-13 18:27:47,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036161770] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:47,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:47,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 18:27:47,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661008573] [2022-12-13 18:27:47,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:47,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 18:27:47,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:47,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 18:27:47,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-12-13 18:27:47,956 INFO L87 Difference]: Start difference. First operand 1008 states and 1349 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 18:27:48,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:48,652 INFO L93 Difference]: Finished difference Result 2311 states and 3183 transitions. [2022-12-13 18:27:48,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:27:48,652 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 18:27:48,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:48,658 INFO L225 Difference]: With dead ends: 2311 [2022-12-13 18:27:48,658 INFO L226 Difference]: Without dead ends: 1466 [2022-12-13 18:27:48,661 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 18:27:48,661 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 642 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:27:48,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 2098 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:27:48,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2022-12-13 18:27:48,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1024. [2022-12-13 18:27:48,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 789 states have (on average 1.3333333333333333) internal successors, (1052), 800 states have internal predecessors, (1052), 148 states have call successors, (148), 86 states have call predecessors, (148), 86 states have return successors, (148), 137 states have call predecessors, (148), 148 states have call successors, (148) [2022-12-13 18:27:48,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1348 transitions. [2022-12-13 18:27:48,776 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1348 transitions. Word has length 96 [2022-12-13 18:27:48,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:48,776 INFO L495 AbstractCegarLoop]: Abstraction has 1024 states and 1348 transitions. [2022-12-13 18:27:48,777 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 18:27:48,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1348 transitions. [2022-12-13 18:27:48,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-12-13 18:27:48,777 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:48,778 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 18:27:48,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 18:27:48,778 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:48,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:48,778 INFO L85 PathProgramCache]: Analyzing trace with hash -566843121, now seen corresponding path program 1 times [2022-12-13 18:27:48,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:48,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984234720] [2022-12-13 18:27:48,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:48,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:48,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:48,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:27:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:48,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:27:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:48,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 18:27:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:48,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:27:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:48,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 18:27:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:48,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 18:27:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:48,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 18:27:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:48,850 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 18:27:48,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:48,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984234720] [2022-12-13 18:27:48,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984234720] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:48,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:48,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:27:48,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948432426] [2022-12-13 18:27:48,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:48,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:27:48,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:48,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:27:48,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:27:48,853 INFO L87 Difference]: Start difference. First operand 1024 states and 1348 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 18:27:49,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:49,229 INFO L93 Difference]: Finished difference Result 2878 states and 3865 transitions. [2022-12-13 18:27:49,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:27:49,230 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 18:27:49,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:49,236 INFO L225 Difference]: With dead ends: 2878 [2022-12-13 18:27:49,236 INFO L226 Difference]: Without dead ends: 2068 [2022-12-13 18:27:49,237 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 18:27:49,238 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 372 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 372 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:27:49,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [372 Valid, 1097 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:27:49,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2068 states. [2022-12-13 18:27:49,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2068 to 1768. [2022-12-13 18:27:49,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1768 states, 1343 states have (on average 1.326880119136262) internal successors, (1782), 1362 states have internal predecessors, (1782), 272 states have call successors, (272), 152 states have call predecessors, (272), 152 states have return successors, (272), 253 states have call predecessors, (272), 272 states have call successors, (272) [2022-12-13 18:27:49,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2326 transitions. [2022-12-13 18:27:49,435 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2326 transitions. Word has length 97 [2022-12-13 18:27:49,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:49,435 INFO L495 AbstractCegarLoop]: Abstraction has 1768 states and 2326 transitions. [2022-12-13 18:27:49,435 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 18:27:49,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2326 transitions. [2022-12-13 18:27:49,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-13 18:27:49,436 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:49,436 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 18:27:49,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 18:27:49,437 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:49,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:49,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1375100484, now seen corresponding path program 1 times [2022-12-13 18:27:49,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:49,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748402580] [2022-12-13 18:27:49,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:49,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:49,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:49,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:27:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:49,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:27:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:49,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 18:27:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:49,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:27:49,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:49,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 18:27:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:49,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 18:27:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:49,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 18:27:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:49,613 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 18:27:49,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:49,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748402580] [2022-12-13 18:27:49,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748402580] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:49,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:49,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:27:49,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738872529] [2022-12-13 18:27:49,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:49,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:27:49,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:49,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:27:49,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:27:49,615 INFO L87 Difference]: Start difference. First operand 1768 states and 2326 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 18:27:50,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:50,421 INFO L93 Difference]: Finished difference Result 3919 states and 5292 transitions. [2022-12-13 18:27:50,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:27:50,422 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 18:27:50,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:50,432 INFO L225 Difference]: With dead ends: 3919 [2022-12-13 18:27:50,432 INFO L226 Difference]: Without dead ends: 2447 [2022-12-13 18:27:50,435 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 18:27:50,436 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 698 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:27:50,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 2011 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 18:27:50,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2447 states. [2022-12-13 18:27:50,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2447 to 1793. [2022-12-13 18:27:50,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1355 states have (on average 1.3210332103321034) internal successors, (1790), 1375 states have internal predecessors, (1790), 280 states have call successors, (280), 157 states have call predecessors, (280), 157 states have return successors, (280), 260 states have call predecessors, (280), 280 states have call successors, (280) [2022-12-13 18:27:50,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2350 transitions. [2022-12-13 18:27:50,631 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2350 transitions. Word has length 99 [2022-12-13 18:27:50,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:50,631 INFO L495 AbstractCegarLoop]: Abstraction has 1793 states and 2350 transitions. [2022-12-13 18:27:50,631 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 18:27:50,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2350 transitions. [2022-12-13 18:27:50,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 18:27:50,632 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:50,632 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 18:27:50,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 18:27:50,633 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:50,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:50,633 INFO L85 PathProgramCache]: Analyzing trace with hash -599061911, now seen corresponding path program 1 times [2022-12-13 18:27:50,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:50,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424216530] [2022-12-13 18:27:50,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:50,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:50,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:50,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:27:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:50,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 18:27:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:50,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 18:27:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:50,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 18:27:50,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:50,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 18:27:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:50,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 18:27:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:50,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 18:27:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:50,703 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 18:27:50,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:50,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424216530] [2022-12-13 18:27:50,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424216530] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:50,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:50,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:27:50,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521351911] [2022-12-13 18:27:50,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:50,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:27:50,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:50,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:27:50,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:27:50,706 INFO L87 Difference]: Start difference. First operand 1793 states and 2350 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 18:27:51,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:51,293 INFO L93 Difference]: Finished difference Result 4650 states and 6153 transitions. [2022-12-13 18:27:51,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:27:51,294 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 18:27:51,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:51,302 INFO L225 Difference]: With dead ends: 4650 [2022-12-13 18:27:51,302 INFO L226 Difference]: Without dead ends: 3194 [2022-12-13 18:27:51,305 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 18:27:51,305 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 399 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1147 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:27:51,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 1147 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:27:51,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2022-12-13 18:27:51,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 2814. [2022-12-13 18:27:51,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2101 states have (on average 1.3122322703474536) internal successors, (2757), 2132 states have internal predecessors, (2757), 460 states have call successors, (460), 252 states have call predecessors, (460), 252 states have return successors, (460), 429 states have call predecessors, (460), 460 states have call successors, (460) [2022-12-13 18:27:51,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 3677 transitions. [2022-12-13 18:27:51,626 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 3677 transitions. Word has length 101 [2022-12-13 18:27:51,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:51,626 INFO L495 AbstractCegarLoop]: Abstraction has 2814 states and 3677 transitions. [2022-12-13 18:27:51,627 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 18:27:51,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 3677 transitions. [2022-12-13 18:27:51,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-12-13 18:27:51,628 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:51,628 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 18:27:51,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 18:27:51,628 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:51,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:51,629 INFO L85 PathProgramCache]: Analyzing trace with hash 647926777, now seen corresponding path program 1 times [2022-12-13 18:27:51,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:51,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411387794] [2022-12-13 18:27:51,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:51,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:51,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:51,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:51,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:27:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:51,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 18:27:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:51,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 18:27:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:51,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 18:27:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:51,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 18:27:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:51,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 18:27:51,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:51,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 18:27:51,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:51,701 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 18:27:51,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:51,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411387794] [2022-12-13 18:27:51,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411387794] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:51,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:51,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:27:51,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913895400] [2022-12-13 18:27:51,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:51,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:27:51,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:51,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:27:51,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:27:51,703 INFO L87 Difference]: Start difference. First operand 2814 states and 3677 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 18:27:52,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:52,325 INFO L93 Difference]: Finished difference Result 6657 states and 8764 transitions. [2022-12-13 18:27:52,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:27:52,325 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 18:27:52,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:52,336 INFO L225 Difference]: With dead ends: 6657 [2022-12-13 18:27:52,336 INFO L226 Difference]: Without dead ends: 4300 [2022-12-13 18:27:52,340 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 18:27:52,340 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 373 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:27:52,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 1133 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:27:52,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4300 states. [2022-12-13 18:27:52,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4300 to 4030. [2022-12-13 18:27:52,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4030 states, 2993 states have (on average 1.3087203474774474) internal successors, (3917), 3037 states have internal predecessors, (3917), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2022-12-13 18:27:52,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4030 states to 4030 states and 5261 transitions. [2022-12-13 18:27:52,747 INFO L78 Accepts]: Start accepts. Automaton has 4030 states and 5261 transitions. Word has length 101 [2022-12-13 18:27:52,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:52,747 INFO L495 AbstractCegarLoop]: Abstraction has 4030 states and 5261 transitions. [2022-12-13 18:27:52,747 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 18:27:52,748 INFO L276 IsEmpty]: Start isEmpty. Operand 4030 states and 5261 transitions. [2022-12-13 18:27:52,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-13 18:27:52,749 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:52,749 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 18:27:52,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-12-13 18:27:52,749 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:52,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:52,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1760044486, now seen corresponding path program 1 times [2022-12-13 18:27:52,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:52,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820012407] [2022-12-13 18:27:52,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:52,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:52,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:52,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 18:27:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:52,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 18:27:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:52,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 18:27:52,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:52,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 18:27:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:52,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 18:27:52,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:52,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 18:27:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:52,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 18:27:52,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:52,786 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 18:27:52,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:52,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820012407] [2022-12-13 18:27:52,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820012407] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:52,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:52,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:27:52,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931509953] [2022-12-13 18:27:52,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:52,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:27:52,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:52,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:27:52,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:27:52,788 INFO L87 Difference]: Start difference. First operand 4030 states and 5261 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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 18:27:53,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:53,412 INFO L93 Difference]: Finished difference Result 9092 states and 12309 transitions. [2022-12-13 18:27:53,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:27:53,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 18:27:53,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:53,425 INFO L225 Difference]: With dead ends: 9092 [2022-12-13 18:27:53,425 INFO L226 Difference]: Without dead ends: 5416 [2022-12-13 18:27:53,430 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 18:27:53,431 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 123 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:27:53,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 631 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:27:53,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5416 states. [2022-12-13 18:27:53,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5416 to 4036. [2022-12-13 18:27:53,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4036 states, 2999 states have (on average 1.3081027009003001) internal successors, (3923), 3043 states have internal predecessors, (3923), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2022-12-13 18:27:53,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4036 states to 4036 states and 5267 transitions. [2022-12-13 18:27:53,869 INFO L78 Accepts]: Start accepts. Automaton has 4036 states and 5267 transitions. Word has length 102 [2022-12-13 18:27:53,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:53,869 INFO L495 AbstractCegarLoop]: Abstraction has 4036 states and 5267 transitions. [2022-12-13 18:27:53,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 18:27:53,869 INFO L276 IsEmpty]: Start isEmpty. Operand 4036 states and 5267 transitions. [2022-12-13 18:27:53,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-13 18:27:53,871 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:53,871 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] [2022-12-13 18:27:53,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-12-13 18:27:53,871 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:53,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:53,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1930890164, now seen corresponding path program 1 times [2022-12-13 18:27:53,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:53,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476006840] [2022-12-13 18:27:53,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:53,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:53,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:53,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 18:27:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:53,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 18:27:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:53,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 18:27:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:53,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 18:27:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:53,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 18:27:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:53,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 18:27:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:53,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 18:27:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:53,973 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 18:27:53,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:53,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476006840] [2022-12-13 18:27:53,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476006840] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:53,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:53,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:27:53,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813108020] [2022-12-13 18:27:53,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:53,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:27:53,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:53,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:27:53,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:27:53,975 INFO L87 Difference]: Start difference. First operand 4036 states and 5267 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 18:27:54,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:54,449 INFO L93 Difference]: Finished difference Result 8476 states and 11323 transitions. [2022-12-13 18:27:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:27:54,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 103 [2022-12-13 18:27:54,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:54,459 INFO L225 Difference]: With dead ends: 8476 [2022-12-13 18:27:54,459 INFO L226 Difference]: Without dead ends: 4516 [2022-12-13 18:27:54,464 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 18:27:54,464 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 263 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:27:54,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 787 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:27:54,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4516 states. [2022-12-13 18:27:54,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4516 to 3681. [2022-12-13 18:27:54,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 2727 states have (on average 1.3182984965163183) internal successors, (3595), 2761 states have internal predecessors, (3595), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2022-12-13 18:27:54,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 4835 transitions. [2022-12-13 18:27:54,825 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 4835 transitions. Word has length 103 [2022-12-13 18:27:54,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:54,825 INFO L495 AbstractCegarLoop]: Abstraction has 3681 states and 4835 transitions. [2022-12-13 18:27:54,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 18:27:54,825 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 4835 transitions. [2022-12-13 18:27:54,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 18:27:54,826 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:54,826 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 18:27:54,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-12-13 18:27:54,827 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:54,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:54,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1500264054, now seen corresponding path program 1 times [2022-12-13 18:27:54,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:54,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578987380] [2022-12-13 18:27:54,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:54,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:54,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:54,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 18:27:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:54,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 18:27:54,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:54,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 18:27:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:54,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 18:27:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:54,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 18:27:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:54,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 18:27:54,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:54,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 18:27:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:54,865 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 18:27:54,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:54,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578987380] [2022-12-13 18:27:54,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578987380] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:54,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:54,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 18:27:54,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555980445] [2022-12-13 18:27:54,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:54,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 18:27:54,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:54,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 18:27:54,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 18:27:54,867 INFO L87 Difference]: Start difference. First operand 3681 states and 4835 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 18:27:55,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:55,442 INFO L93 Difference]: Finished difference Result 8070 states and 10879 transitions. [2022-12-13 18:27:55,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 18:27:55,442 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 18:27:55,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:55,452 INFO L225 Difference]: With dead ends: 8070 [2022-12-13 18:27:55,452 INFO L226 Difference]: Without dead ends: 4570 [2022-12-13 18:27:55,457 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 18:27:55,457 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 123 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:27:55,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 622 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:27:55,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4570 states. [2022-12-13 18:27:55,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4570 to 3691. [2022-12-13 18:27:55,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3691 states, 2737 states have (on average 1.3171355498721227) internal successors, (3605), 2771 states have internal predecessors, (3605), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2022-12-13 18:27:55,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 4845 transitions. [2022-12-13 18:27:55,864 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 4845 transitions. Word has length 104 [2022-12-13 18:27:55,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:55,864 INFO L495 AbstractCegarLoop]: Abstraction has 3691 states and 4845 transitions. [2022-12-13 18:27:55,864 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 18:27:55,864 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 4845 transitions. [2022-12-13 18:27:55,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-12-13 18:27:55,865 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:55,865 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 18:27:55,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-12-13 18:27:55,865 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:55,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:55,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1445902481, now seen corresponding path program 1 times [2022-12-13 18:27:55,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:55,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018887976] [2022-12-13 18:27:55,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:55,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:55,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:55,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:55,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:55,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 18:27:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:55,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 18:27:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:55,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 18:27:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:55,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 18:27:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:55,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 18:27:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:55,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 18:27:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:55,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 18:27:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:55,946 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 18:27:55,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:55,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018887976] [2022-12-13 18:27:55,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018887976] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:27:55,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:27:55,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:27:55,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224124400] [2022-12-13 18:27:55,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:27:55,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:27:55,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:55,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:27:55,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:27:55,947 INFO L87 Difference]: Start difference. First operand 3691 states and 4845 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 18:27:56,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:27:56,459 INFO L93 Difference]: Finished difference Result 8053 states and 10848 transitions. [2022-12-13 18:27:56,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:27:56,460 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 18:27:56,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:27:56,472 INFO L225 Difference]: With dead ends: 8053 [2022-12-13 18:27:56,472 INFO L226 Difference]: Without dead ends: 4481 [2022-12-13 18:27:56,478 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 18:27:56,478 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 211 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 804 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 18:27:56,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 804 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:27:56,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4481 states. [2022-12-13 18:27:56,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4481 to 2783. [2022-12-13 18:27:56,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 2063 states have (on average 1.3116820164808531) internal successors, (2706), 2082 states have internal predecessors, (2706), 469 states have call successors, (469), 250 states have call predecessors, (469), 250 states have return successors, (469), 450 states have call predecessors, (469), 469 states have call successors, (469) [2022-12-13 18:27:56,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 3644 transitions. [2022-12-13 18:27:56,813 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 3644 transitions. Word has length 104 [2022-12-13 18:27:56,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:27:56,813 INFO L495 AbstractCegarLoop]: Abstraction has 2783 states and 3644 transitions. [2022-12-13 18:27:56,813 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 18:27:56,813 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 3644 transitions. [2022-12-13 18:27:56,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-12-13 18:27:56,815 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:27:56,816 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 18:27:56,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-12-13 18:27:56,816 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:27:56,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:27:56,816 INFO L85 PathProgramCache]: Analyzing trace with hash 486642331, now seen corresponding path program 1 times [2022-12-13 18:27:56,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:27:56,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289389494] [2022-12-13 18:27:56,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:56,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:27:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:56,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:27:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:56,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:27:56,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:56,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 18:27:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:56,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 18:27:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:56,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 18:27:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:56,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 18:27:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:57,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 18:27:57,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:57,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 18:27:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:57,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 18:27:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:57,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 18:27:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:57,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 18:27:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:57,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 18:27:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:57,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 18:27:57,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:57,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 18:27:57,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:57,014 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 18:27:57,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:27:57,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289389494] [2022-12-13 18:27:57,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289389494] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:27:57,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019947707] [2022-12-13 18:27:57,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:27:57,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:27:57,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:27:57,015 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:27:57,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 18:27:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:27:57,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 18:27:57,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:27:57,334 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 18:27:57,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:27:57,444 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 18:27:57,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019947707] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:27:57,444 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:27:57,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-12-13 18:27:57,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172346515] [2022-12-13 18:27:57,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:27:57,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 18:27:57,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:27:57,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 18:27:57,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:27:57,446 INFO L87 Difference]: Start difference. First operand 2783 states and 3644 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 18:28:00,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:28:00,455 INFO L93 Difference]: Finished difference Result 9096 states and 12764 transitions. [2022-12-13 18:28:00,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-12-13 18:28:00,456 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 18:28:00,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:28:00,468 INFO L225 Difference]: With dead ends: 9096 [2022-12-13 18:28:00,468 INFO L226 Difference]: Without dead ends: 6563 [2022-12-13 18:28:00,472 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 18:28:00,473 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 2662 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 931 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2662 SdHoareTripleChecker+Valid, 2340 SdHoareTripleChecker+Invalid, 2311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 931 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:28:00,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2662 Valid, 2340 Invalid, 2311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [931 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 18:28:00,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6563 states. [2022-12-13 18:28:01,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6563 to 3532. [2022-12-13 18:28:01,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3532 states, 2623 states have (on average 1.3027068242470454) internal successors, (3417), 2647 states have internal predecessors, (3417), 585 states have call successors, (585), 323 states have call predecessors, (585), 323 states have return successors, (585), 561 states have call predecessors, (585), 585 states have call successors, (585) [2022-12-13 18:28:01,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3532 states to 3532 states and 4587 transitions. [2022-12-13 18:28:01,025 INFO L78 Accepts]: Start accepts. Automaton has 3532 states and 4587 transitions. Word has length 153 [2022-12-13 18:28:01,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:28:01,025 INFO L495 AbstractCegarLoop]: Abstraction has 3532 states and 4587 transitions. [2022-12-13 18:28:01,025 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 18:28:01,025 INFO L276 IsEmpty]: Start isEmpty. Operand 3532 states and 4587 transitions. [2022-12-13 18:28:01,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-12-13 18:28:01,028 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:28:01,028 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:28:01,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 18:28:01,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-12-13 18:28:01,229 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:28:01,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:28:01,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1175059624, now seen corresponding path program 1 times [2022-12-13 18:28:01,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:28:01,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33523836] [2022-12-13 18:28:01,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:01,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:28:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:01,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:28:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:01,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 18:28:01,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:01,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-12-13 18:28:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:01,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-12-13 18:28:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:01,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 18:28:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:01,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 18:28:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:01,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 18:28:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:01,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 18:28:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:01,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 18:28:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:01,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 18:28:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:01,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 18:28:01,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:01,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 18:28:01,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:01,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 18:28:01,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:01,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 18:28:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:01,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 18:28:01,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:01,358 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 18:28:01,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:28:01,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33523836] [2022-12-13 18:28:01,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33523836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:28:01,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:28:01,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:28:01,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813238784] [2022-12-13 18:28:01,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:28:01,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:28:01,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:28:01,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:28:01,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:28:01,359 INFO L87 Difference]: Start difference. First operand 3532 states and 4587 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 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 18:28:03,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:28:03,170 INFO L93 Difference]: Finished difference Result 12118 states and 16493 transitions. [2022-12-13 18:28:03,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 18:28:03,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 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 162 [2022-12-13 18:28:03,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:28:03,186 INFO L225 Difference]: With dead ends: 12118 [2022-12-13 18:28:03,186 INFO L226 Difference]: Without dead ends: 8940 [2022-12-13 18:28:03,191 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 18:28:03,192 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 628 mSDsluCounter, 1977 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 2429 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:28:03,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 2429 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:28:03,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8940 states. [2022-12-13 18:28:04,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8940 to 6288. [2022-12-13 18:28:04,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6288 states, 4611 states have (on average 1.3029711559314683) internal successors, (6008), 4657 states have internal predecessors, (6008), 1095 states have call successors, (1095), 581 states have call predecessors, (1095), 581 states have return successors, (1095), 1049 states have call predecessors, (1095), 1095 states have call successors, (1095) [2022-12-13 18:28:04,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6288 states to 6288 states and 8198 transitions. [2022-12-13 18:28:04,082 INFO L78 Accepts]: Start accepts. Automaton has 6288 states and 8198 transitions. Word has length 162 [2022-12-13 18:28:04,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:28:04,082 INFO L495 AbstractCegarLoop]: Abstraction has 6288 states and 8198 transitions. [2022-12-13 18:28:04,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 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 18:28:04,082 INFO L276 IsEmpty]: Start isEmpty. Operand 6288 states and 8198 transitions. [2022-12-13 18:28:04,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-12-13 18:28:04,087 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:28:04,087 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 18:28:04,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-12-13 18:28:04,088 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:28:04,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:28:04,088 INFO L85 PathProgramCache]: Analyzing trace with hash -52637384, now seen corresponding path program 1 times [2022-12-13 18:28:04,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:28:04,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250572972] [2022-12-13 18:28:04,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:04,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:28:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:04,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:28:04,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:04,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:28:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:04,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:28:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:04,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 18:28:04,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:04,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:28:04,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:04,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 18:28:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:04,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 18:28:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:04,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 18:28:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:04,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 18:28:04,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:04,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 18:28:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:04,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 18:28:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:04,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 18:28:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:04,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 18:28:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:04,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 18:28:04,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:04,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 18:28:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:04,372 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 18:28:04,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:28:04,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250572972] [2022-12-13 18:28:04,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250572972] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:28:04,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632092965] [2022-12-13 18:28:04,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:04,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:28:04,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:28:04,374 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:28:04,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 18:28:04,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:04,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 18:28:04,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:28:04,691 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 18:28:04,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:28:04,857 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 18:28:04,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632092965] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:28:04,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:28:04,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-12-13 18:28:04,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928034935] [2022-12-13 18:28:04,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:28:04,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 18:28:04,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:28:04,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 18:28:04,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:28:04,860 INFO L87 Difference]: Start difference. First operand 6288 states and 8198 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 18:28:15,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:28:15,247 INFO L93 Difference]: Finished difference Result 29181 states and 39381 transitions. [2022-12-13 18:28:15,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-12-13 18:28:15,248 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 18:28:15,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:28:15,318 INFO L225 Difference]: With dead ends: 29181 [2022-12-13 18:28:15,318 INFO L226 Difference]: Without dead ends: 23173 [2022-12-13 18:28:15,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 410 SyntacticMatches, 1 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5081 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1835, Invalid=12207, Unknown=0, NotChecked=0, Total=14042 [2022-12-13 18:28:15,333 INFO L413 NwaCegarLoop]: 1478 mSDtfsCounter, 5076 mSDsluCounter, 11644 mSDsCounter, 0 mSdLazyCounter, 5862 mSolverCounterSat, 3469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5076 SdHoareTripleChecker+Valid, 13122 SdHoareTripleChecker+Invalid, 9331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3469 IncrementalHoareTripleChecker+Valid, 5862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:28:15,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5076 Valid, 13122 Invalid, 9331 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3469 Valid, 5862 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-12-13 18:28:15,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23173 states. [2022-12-13 18:28:16,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23173 to 8387. [2022-12-13 18:28:16,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8387 states, 6194 states have (on average 1.3041653212786568) internal successors, (8078), 6252 states have internal predecessors, (8078), 1423 states have call successors, (1423), 769 states have call predecessors, (1423), 769 states have return successors, (1423), 1365 states have call predecessors, (1423), 1423 states have call successors, (1423) [2022-12-13 18:28:16,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8387 states to 8387 states and 10924 transitions. [2022-12-13 18:28:16,928 INFO L78 Accepts]: Start accepts. Automaton has 8387 states and 10924 transitions. Word has length 162 [2022-12-13 18:28:16,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:28:16,928 INFO L495 AbstractCegarLoop]: Abstraction has 8387 states and 10924 transitions. [2022-12-13 18:28:16,929 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 18:28:16,929 INFO L276 IsEmpty]: Start isEmpty. Operand 8387 states and 10924 transitions. [2022-12-13 18:28:16,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 18:28:16,936 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:28:16,937 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 18:28:16,942 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 18:28:17,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:28:17,138 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:28:17,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:28:17,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1883995866, now seen corresponding path program 1 times [2022-12-13 18:28:17,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:28:17,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683155096] [2022-12-13 18:28:17,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:17,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:28:17,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:17,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:28:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:17,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:28:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:17,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 18:28:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:17,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 18:28:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:17,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 18:28:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:17,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:28:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:17,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 18:28:17,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:17,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 18:28:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:17,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 18:28:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:17,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 18:28:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:17,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 18:28:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:17,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 18:28:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:17,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-12-13 18:28:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:17,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-12-13 18:28:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:17,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-12-13 18:28:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:17,613 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 18:28:17,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:28:17,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683155096] [2022-12-13 18:28:17,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683155096] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:28:17,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650891861] [2022-12-13 18:28:17,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:17,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:28:17,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:28:17,614 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:28:17,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 18:28:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:17,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 739 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 18:28:17,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:28:17,795 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 18:28:17,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:28:17,859 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 18:28:17,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650891861] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 18:28:17,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 18:28:17,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 14 [2022-12-13 18:28:17,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194486970] [2022-12-13 18:28:17,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:28:17,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 18:28:17,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:28:17,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 18:28:17,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:28:17,861 INFO L87 Difference]: Start difference. First operand 8387 states and 10924 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 18:28:18,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:28:18,759 INFO L93 Difference]: Finished difference Result 13717 states and 17918 transitions. [2022-12-13 18:28:18,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:28:18,760 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 18:28:18,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:28:18,769 INFO L225 Difference]: With dead ends: 13717 [2022-12-13 18:28:18,770 INFO L226 Difference]: Without dead ends: 5526 [2022-12-13 18:28:18,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:28:18,778 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 0 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:28:18,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 765 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:28:18,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5526 states. [2022-12-13 18:28:19,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5526 to 5294. [2022-12-13 18:28:19,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5294 states, 3912 states have (on average 1.3034253578732107) internal successors, (5099), 3946 states have internal predecessors, (5099), 901 states have call successors, (901), 480 states have call predecessors, (901), 480 states have return successors, (901), 867 states have call predecessors, (901), 901 states have call successors, (901) [2022-12-13 18:28:19,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5294 states to 5294 states and 6901 transitions. [2022-12-13 18:28:19,560 INFO L78 Accepts]: Start accepts. Automaton has 5294 states and 6901 transitions. Word has length 166 [2022-12-13 18:28:19,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:28:19,560 INFO L495 AbstractCegarLoop]: Abstraction has 5294 states and 6901 transitions. [2022-12-13 18:28:19,560 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 18:28:19,560 INFO L276 IsEmpty]: Start isEmpty. Operand 5294 states and 6901 transitions. [2022-12-13 18:28:19,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-12-13 18:28:19,564 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:28:19,564 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 18:28:19,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 18:28:19,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:28:19,765 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:28:19,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:28:19,767 INFO L85 PathProgramCache]: Analyzing trace with hash 981286631, now seen corresponding path program 1 times [2022-12-13 18:28:19,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:28:19,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528183983] [2022-12-13 18:28:19,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:19,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:28:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:20,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:28:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:20,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:28:20,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:20,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 18:28:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:20,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 18:28:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:20,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 18:28:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:20,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:28:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:20,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 18:28:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:20,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 18:28:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:20,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 18:28:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:20,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 18:28:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:20,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 18:28:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:20,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 18:28:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:20,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 18:28:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:20,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-12-13 18:28:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:20,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 18:28:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:20,193 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 18:28:20,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:28:20,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528183983] [2022-12-13 18:28:20,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528183983] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:28:20,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263337580] [2022-12-13 18:28:20,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:20,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:28:20,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:28:20,194 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:28:20,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 18:28:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:20,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 27 conjunts are in the unsatisfiable core [2022-12-13 18:28:20,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:28:20,834 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 18:28:20,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:28:21,162 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 18:28:21,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263337580] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:28:21,162 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:28:21,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 17 [2022-12-13 18:28:21,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433649699] [2022-12-13 18:28:21,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:28:21,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 18:28:21,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:28:21,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 18:28:21,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:28:21,164 INFO L87 Difference]: Start difference. First operand 5294 states and 6901 transitions. Second operand has 17 states, 17 states have (on average 13.529411764705882) internal successors, (230), 17 states have internal predecessors, (230), 7 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) [2022-12-13 18:28:28,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:28:28,436 INFO L93 Difference]: Finished difference Result 20989 states and 29229 transitions. [2022-12-13 18:28:28,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-12-13 18:28:28,437 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.529411764705882) internal successors, (230), 17 states have internal predecessors, (230), 7 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) Word has length 167 [2022-12-13 18:28:28,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:28:28,478 INFO L225 Difference]: With dead ends: 20989 [2022-12-13 18:28:28,478 INFO L226 Difference]: Without dead ends: 15948 [2022-12-13 18:28:28,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 362 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2426 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1304, Invalid=5338, Unknown=0, NotChecked=0, Total=6642 [2022-12-13 18:28:28,492 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 2355 mSDsluCounter, 2298 mSDsCounter, 0 mSdLazyCounter, 2583 mSolverCounterSat, 1263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2355 SdHoareTripleChecker+Valid, 2893 SdHoareTripleChecker+Invalid, 3846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1263 IncrementalHoareTripleChecker+Valid, 2583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:28:28,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2355 Valid, 2893 Invalid, 3846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1263 Valid, 2583 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-12-13 18:28:28,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15948 states. [2022-12-13 18:28:30,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15948 to 9196. [2022-12-13 18:28:30,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9196 states, 6903 states have (on average 1.3069679849340867) internal successors, (9022), 6957 states have internal predecessors, (9022), 1469 states have call successors, (1469), 823 states have call predecessors, (1469), 823 states have return successors, (1469), 1415 states have call predecessors, (1469), 1469 states have call successors, (1469) [2022-12-13 18:28:30,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9196 states to 9196 states and 11960 transitions. [2022-12-13 18:28:30,924 INFO L78 Accepts]: Start accepts. Automaton has 9196 states and 11960 transitions. Word has length 167 [2022-12-13 18:28:30,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:28:30,925 INFO L495 AbstractCegarLoop]: Abstraction has 9196 states and 11960 transitions. [2022-12-13 18:28:30,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.529411764705882) internal successors, (230), 17 states have internal predecessors, (230), 7 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (31), 7 states have call predecessors, (31), 7 states have call successors, (31) [2022-12-13 18:28:30,925 INFO L276 IsEmpty]: Start isEmpty. Operand 9196 states and 11960 transitions. [2022-12-13 18:28:30,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-12-13 18:28:30,935 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:28:30,935 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 18:28:30,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 18:28:31,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-12-13 18:28:31,137 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:28:31,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:28:31,138 INFO L85 PathProgramCache]: Analyzing trace with hash 926865534, now seen corresponding path program 1 times [2022-12-13 18:28:31,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:28:31,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391404507] [2022-12-13 18:28:31,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:31,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:28:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:31,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:28:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:31,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:28:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:31,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 18:28:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:31,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 18:28:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:31,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 18:28:31,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:31,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:28:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:31,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 18:28:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:31,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 18:28:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:31,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 18:28:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:31,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 18:28:31,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:31,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 18:28:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:31,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 18:28:31,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:31,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 18:28:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:31,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-12-13 18:28:31,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:31,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 18:28:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:31,968 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 18:28:31,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:28:31,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391404507] [2022-12-13 18:28:31,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391404507] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:28:31,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296181453] [2022-12-13 18:28:31,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:28:31,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:28:31,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:28:31,969 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:28:31,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 18:28:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:28:32,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 754 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-13 18:28:32,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:28:32,874 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 73 proven. 9 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 18:28:32,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:28:33,634 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 18:28:33,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296181453] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:28:33,634 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:28:33,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 12] total 27 [2022-12-13 18:28:33,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025042555] [2022-12-13 18:28:33,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:28:33,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-13 18:28:33,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:28:33,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-13 18:28:33,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=580, Unknown=0, NotChecked=0, Total=702 [2022-12-13 18:28:33,637 INFO L87 Difference]: Start difference. First operand 9196 states and 11960 transitions. Second operand has 27 states, 27 states have (on average 9.62962962962963) internal successors, (260), 27 states have internal predecessors, (260), 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 18:29:13,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:13,624 INFO L93 Difference]: Finished difference Result 29957 states and 41919 transitions. [2022-12-13 18:29:13,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 238 states. [2022-12-13 18:29:13,625 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.62962962962963) internal successors, (260), 27 states have internal predecessors, (260), 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 18:29:13,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:13,670 INFO L225 Difference]: With dead ends: 29957 [2022-12-13 18:29:13,670 INFO L226 Difference]: Without dead ends: 21025 [2022-12-13 18:29:13,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 353 SyntacticMatches, 2 SemanticMatches, 255 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28943 ImplicationChecksByTransitivity, 26.9s TimeCoverageRelationStatistics Valid=8691, Invalid=57101, Unknown=0, NotChecked=0, Total=65792 [2022-12-13 18:29:13,690 INFO L413 NwaCegarLoop]: 537 mSDtfsCounter, 8434 mSDsluCounter, 4597 mSDsCounter, 0 mSdLazyCounter, 8207 mSolverCounterSat, 4209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8435 SdHoareTripleChecker+Valid, 5134 SdHoareTripleChecker+Invalid, 12416 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4209 IncrementalHoareTripleChecker+Valid, 8207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:13,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8435 Valid, 5134 Invalid, 12416 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4209 Valid, 8207 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-12-13 18:29:13,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21025 states. [2022-12-13 18:29:15,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21025 to 9240. [2022-12-13 18:29:15,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9240 states, 6937 states have (on average 1.305463456825717) internal successors, (9056), 6991 states have internal predecessors, (9056), 1474 states have call successors, (1474), 828 states have call predecessors, (1474), 828 states have return successors, (1474), 1420 states have call predecessors, (1474), 1474 states have call successors, (1474) [2022-12-13 18:29:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9240 states to 9240 states and 12004 transitions. [2022-12-13 18:29:15,649 INFO L78 Accepts]: Start accepts. Automaton has 9240 states and 12004 transitions. Word has length 167 [2022-12-13 18:29:15,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:15,650 INFO L495 AbstractCegarLoop]: Abstraction has 9240 states and 12004 transitions. [2022-12-13 18:29:15,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.62962962962963) internal successors, (260), 27 states have internal predecessors, (260), 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 18:29:15,650 INFO L276 IsEmpty]: Start isEmpty. Operand 9240 states and 12004 transitions. [2022-12-13 18:29:15,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-12-13 18:29:15,653 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:15,653 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 18:29:15,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 18:29:15,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:29:15,855 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:15,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:15,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1308252018, now seen corresponding path program 1 times [2022-12-13 18:29:15,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:15,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987646720] [2022-12-13 18:29:15,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:15,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:16,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:29:16,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:16,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:29:16,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:16,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:29:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:16,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 18:29:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:16,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:29:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:16,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 18:29:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:16,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 18:29:16,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:16,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 18:29:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:16,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 18:29:16,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:16,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 18:29:16,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:16,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 18:29:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:16,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 18:29:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:16,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 18:29:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:16,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 18:29:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:16,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 18:29:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:16,044 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 18:29:16,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:16,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987646720] [2022-12-13 18:29:16,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987646720] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:29:16,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038533581] [2022-12-13 18:29:16,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:16,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:29:16,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:29:16,046 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:29:16,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 18:29:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:16,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 18:29:16,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:29:16,302 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 18:29:16,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:29:16,416 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 18:29:16,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1038533581] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:29:16,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:29:16,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 10 [2022-12-13 18:29:16,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371888217] [2022-12-13 18:29:16,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:29:16,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 18:29:16,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:16,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 18:29:16,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-12-13 18:29:16,418 INFO L87 Difference]: Start difference. First operand 9240 states and 12004 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 18:29:20,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:20,753 INFO L93 Difference]: Finished difference Result 25835 states and 33833 transitions. [2022-12-13 18:29:20,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 18:29:20,754 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 18:29:20,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:20,780 INFO L225 Difference]: With dead ends: 25835 [2022-12-13 18:29:20,780 INFO L226 Difference]: Without dead ends: 16859 [2022-12-13 18:29:20,792 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 18:29:20,792 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 513 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 2274 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:20,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 2274 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:29:20,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16859 states. [2022-12-13 18:29:23,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16859 to 11808. [2022-12-13 18:29:23,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11808 states, 8933 states have (on average 1.292287025635285) internal successors, (11544), 9003 states have internal predecessors, (11544), 1811 states have call successors, (1811), 1063 states have call predecessors, (1811), 1063 states have return successors, (1811), 1741 states have call predecessors, (1811), 1811 states have call successors, (1811) [2022-12-13 18:29:23,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11808 states to 11808 states and 15166 transitions. [2022-12-13 18:29:23,339 INFO L78 Accepts]: Start accepts. Automaton has 11808 states and 15166 transitions. Word has length 169 [2022-12-13 18:29:23,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:23,340 INFO L495 AbstractCegarLoop]: Abstraction has 11808 states and 15166 transitions. [2022-12-13 18:29:23,340 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 18:29:23,340 INFO L276 IsEmpty]: Start isEmpty. Operand 11808 states and 15166 transitions. [2022-12-13 18:29:23,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-12-13 18:29:23,343 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:23,343 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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] [2022-12-13 18:29:23,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 18:29:23,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-12-13 18:29:23,545 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:23,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:23,546 INFO L85 PathProgramCache]: Analyzing trace with hash 494131333, now seen corresponding path program 1 times [2022-12-13 18:29:23,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:23,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704913915] [2022-12-13 18:29:23,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:23,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:29:23,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:29:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:29:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 18:29:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:29:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 18:29:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 18:29:23,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 18:29:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 18:29:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 18:29:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 18:29:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 18:29:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 18:29:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 18:29:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 18:29:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 18:29:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:23,693 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-12-13 18:29:23,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:23,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704913915] [2022-12-13 18:29:23,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704913915] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:29:23,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:29:23,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:29:23,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778684464] [2022-12-13 18:29:23,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:29:23,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:29:23,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:23,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:29:23,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:29:23,695 INFO L87 Difference]: Start difference. First operand 11808 states and 15166 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 18:29:30,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:30,780 INFO L93 Difference]: Finished difference Result 33688 states and 44610 transitions. [2022-12-13 18:29:30,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 18:29:30,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 171 [2022-12-13 18:29:30,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:30,825 INFO L225 Difference]: With dead ends: 33688 [2022-12-13 18:29:30,825 INFO L226 Difference]: Without dead ends: 24670 [2022-12-13 18:29:30,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 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 18:29:30,839 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 504 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 355 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:30,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 2545 Invalid, 355 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 18:29:30,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24670 states. [2022-12-13 18:29:34,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24670 to 17376. [2022-12-13 18:29:34,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17376 states, 12966 states have (on average 1.283047971618078) internal successors, (16636), 13085 states have internal predecessors, (16636), 2809 states have call successors, (2809), 1600 states have call predecessors, (2809), 1600 states have return successors, (2809), 2690 states have call predecessors, (2809), 2809 states have call successors, (2809) [2022-12-13 18:29:34,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17376 states to 17376 states and 22254 transitions. [2022-12-13 18:29:34,813 INFO L78 Accepts]: Start accepts. Automaton has 17376 states and 22254 transitions. Word has length 171 [2022-12-13 18:29:34,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:34,813 INFO L495 AbstractCegarLoop]: Abstraction has 17376 states and 22254 transitions. [2022-12-13 18:29:34,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 18:29:34,814 INFO L276 IsEmpty]: Start isEmpty. Operand 17376 states and 22254 transitions. [2022-12-13 18:29:34,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-12-13 18:29:34,825 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:34,825 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 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] [2022-12-13 18:29:34,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-12-13 18:29:34,826 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:34,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:34,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2126458504, now seen corresponding path program 1 times [2022-12-13 18:29:34,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:34,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600437967] [2022-12-13 18:29:34,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:34,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:29:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:29:35,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:29:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 18:29:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:29:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 18:29:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 18:29:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 18:29:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 18:29:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 18:29:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 18:29:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 18:29:35,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 18:29:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 18:29:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 18:29:35,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-12-13 18:29:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,423 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-13 18:29:35,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:35,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600437967] [2022-12-13 18:29:35,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600437967] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:29:35,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037428597] [2022-12-13 18:29:35,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:35,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:29:35,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:29:35,425 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:29:35,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 18:29:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:35,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 18:29:35,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:29:35,732 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 72 proven. 26 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-12-13 18:29:35,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:29:35,887 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-13 18:29:35,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037428597] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:29:35,887 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:29:35,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 19 [2022-12-13 18:29:35,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318325438] [2022-12-13 18:29:35,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:29:35,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 18:29:35,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:35,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 18:29:35,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-12-13 18:29:35,889 INFO L87 Difference]: Start difference. First operand 17376 states and 22254 transitions. Second operand has 19 states, 19 states have (on average 12.526315789473685) internal successors, (238), 19 states have internal predecessors, (238), 8 states have call successors, (43), 5 states have call predecessors, (43), 6 states have return successors, (42), 8 states have call predecessors, (42), 8 states have call successors, (42) [2022-12-13 18:29:47,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:29:47,723 INFO L93 Difference]: Finished difference Result 40839 states and 53636 transitions. [2022-12-13 18:29:47,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-12-13 18:29:47,724 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.526315789473685) internal successors, (238), 19 states have internal predecessors, (238), 8 states have call successors, (43), 5 states have call predecessors, (43), 6 states have return successors, (42), 8 states have call predecessors, (42), 8 states have call successors, (42) Word has length 172 [2022-12-13 18:29:47,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:29:47,784 INFO L225 Difference]: With dead ends: 40839 [2022-12-13 18:29:47,784 INFO L226 Difference]: Without dead ends: 24831 [2022-12-13 18:29:47,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1395 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=890, Invalid=4366, Unknown=0, NotChecked=0, Total=5256 [2022-12-13 18:29:47,801 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 2499 mSDsluCounter, 6595 mSDsCounter, 0 mSdLazyCounter, 6101 mSolverCounterSat, 2095 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2499 SdHoareTripleChecker+Valid, 7459 SdHoareTripleChecker+Invalid, 8196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2095 IncrementalHoareTripleChecker+Valid, 6101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:29:47,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2499 Valid, 7459 Invalid, 8196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2095 Valid, 6101 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-12-13 18:29:47,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24831 states. [2022-12-13 18:29:51,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24831 to 16666. [2022-12-13 18:29:51,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16666 states, 12385 states have (on average 1.2811465482438433) internal successors, (15867), 12498 states have internal predecessors, (15867), 2734 states have call successors, (2734), 1546 states have call predecessors, (2734), 1546 states have return successors, (2734), 2621 states have call predecessors, (2734), 2734 states have call successors, (2734) [2022-12-13 18:29:51,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16666 states to 16666 states and 21335 transitions. [2022-12-13 18:29:51,985 INFO L78 Accepts]: Start accepts. Automaton has 16666 states and 21335 transitions. Word has length 172 [2022-12-13 18:29:51,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:29:51,986 INFO L495 AbstractCegarLoop]: Abstraction has 16666 states and 21335 transitions. [2022-12-13 18:29:51,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.526315789473685) internal successors, (238), 19 states have internal predecessors, (238), 8 states have call successors, (43), 5 states have call predecessors, (43), 6 states have return successors, (42), 8 states have call predecessors, (42), 8 states have call successors, (42) [2022-12-13 18:29:51,986 INFO L276 IsEmpty]: Start isEmpty. Operand 16666 states and 21335 transitions. [2022-12-13 18:29:51,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-12-13 18:29:51,993 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:29:51,993 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:29:51,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-13 18:29:52,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-13 18:29:52,194 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:29:52,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:29:52,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1658950161, now seen corresponding path program 1 times [2022-12-13 18:29:52,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:29:52,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175674903] [2022-12-13 18:29:52,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:52,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:29:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:52,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:29:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:52,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:29:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:52,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 18:29:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:52,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 18:29:52,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:52,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 18:29:52,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:52,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:29:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:52,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 18:29:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:52,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 18:29:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:52,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 18:29:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:52,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 18:29:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:52,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 18:29:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:52,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 18:29:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:52,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 18:29:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:52,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-12-13 18:29:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:52,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-12-13 18:29:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:52,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-12-13 18:29:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:52,794 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 29 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-12-13 18:29:52,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:29:52,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175674903] [2022-12-13 18:29:52,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175674903] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:29:52,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804547459] [2022-12-13 18:29:52,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:29:52,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:29:52,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:29:52,795 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:29:52,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 18:29:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:29:52,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 776 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 18:29:52,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:29:53,098 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 53 proven. 54 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-13 18:29:53,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:29:53,222 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 17 proven. 29 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-12-13 18:29:53,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804547459] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:29:53,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:29:53,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2022-12-13 18:29:53,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288414493] [2022-12-13 18:29:53,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:29:53,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 18:29:53,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:29:53,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 18:29:53,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-12-13 18:29:53,224 INFO L87 Difference]: Start difference. First operand 16666 states and 21335 transitions. Second operand has 19 states, 19 states have (on average 12.631578947368421) internal successors, (240), 18 states have internal predecessors, (240), 8 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (44), 9 states have call predecessors, (44), 8 states have call successors, (44) [2022-12-13 18:30:13,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:30:13,110 INFO L93 Difference]: Finished difference Result 41404 states and 55188 transitions. [2022-12-13 18:30:13,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2022-12-13 18:30:13,110 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.631578947368421) internal successors, (240), 18 states have internal predecessors, (240), 8 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (44), 9 states have call predecessors, (44), 8 states have call successors, (44) Word has length 177 [2022-12-13 18:30:13,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:30:13,184 INFO L225 Difference]: With dead ends: 41404 [2022-12-13 18:30:13,184 INFO L226 Difference]: Without dead ends: 26656 [2022-12-13 18:30:13,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 410 SyntacticMatches, 1 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9629 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=3419, Invalid=22021, Unknown=0, NotChecked=0, Total=25440 [2022-12-13 18:30:13,211 INFO L413 NwaCegarLoop]: 1301 mSDtfsCounter, 3570 mSDsluCounter, 8552 mSDsCounter, 0 mSdLazyCounter, 7813 mSolverCounterSat, 3676 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3570 SdHoareTripleChecker+Valid, 9853 SdHoareTripleChecker+Invalid, 11489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3676 IncrementalHoareTripleChecker+Valid, 7813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:30:13,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3570 Valid, 9853 Invalid, 11489 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3676 Valid, 7813 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-12-13 18:30:13,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26656 states. [2022-12-13 18:30:17,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26656 to 16680. [2022-12-13 18:30:17,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16680 states, 12399 states have (on average 1.275586740866199) internal successors, (15816), 12512 states have internal predecessors, (15816), 2734 states have call successors, (2734), 1546 states have call predecessors, (2734), 1546 states have return successors, (2734), 2621 states have call predecessors, (2734), 2734 states have call successors, (2734) [2022-12-13 18:30:17,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16680 states to 16680 states and 21284 transitions. [2022-12-13 18:30:17,481 INFO L78 Accepts]: Start accepts. Automaton has 16680 states and 21284 transitions. Word has length 177 [2022-12-13 18:30:17,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:30:17,482 INFO L495 AbstractCegarLoop]: Abstraction has 16680 states and 21284 transitions. [2022-12-13 18:30:17,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.631578947368421) internal successors, (240), 18 states have internal predecessors, (240), 8 states have call successors, (45), 4 states have call predecessors, (45), 6 states have return successors, (44), 9 states have call predecessors, (44), 8 states have call successors, (44) [2022-12-13 18:30:17,482 INFO L276 IsEmpty]: Start isEmpty. Operand 16680 states and 21284 transitions. [2022-12-13 18:30:17,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-13 18:30:17,485 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:30:17,485 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 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 18:30:17,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 18:30:17,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:30:17,687 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:30:17,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:17,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1778707627, now seen corresponding path program 1 times [2022-12-13 18:30:17,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:17,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574752472] [2022-12-13 18:30:17,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:17,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:17,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:30:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:17,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:30:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:17,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 18:30:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:17,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 18:30:17,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:17,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 18:30:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:17,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:30:17,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:17,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 18:30:17,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:17,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 18:30:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:17,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 18:30:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:17,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 18:30:17,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:17,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 18:30:17,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:17,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 18:30:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:17,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 18:30:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:17,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 18:30:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:17,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-12-13 18:30:17,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:17,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-12-13 18:30:17,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:17,977 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-12-13 18:30:17,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:17,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574752472] [2022-12-13 18:30:17,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574752472] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:30:17,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:30:17,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 18:30:17,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707431267] [2022-12-13 18:30:17,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:30:17,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:30:17,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:17,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:30:17,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 18:30:17,978 INFO L87 Difference]: Start difference. First operand 16680 states and 21284 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 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 18:30:24,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:30:24,395 INFO L93 Difference]: Finished difference Result 35084 states and 46017 transitions. [2022-12-13 18:30:24,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:30:24,395 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 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 178 [2022-12-13 18:30:24,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:30:24,437 INFO L225 Difference]: With dead ends: 35084 [2022-12-13 18:30:24,437 INFO L226 Difference]: Without dead ends: 20714 [2022-12-13 18:30:24,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 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 18:30:24,454 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 601 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:30:24,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 2085 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 369 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:30:24,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20714 states. [2022-12-13 18:30:28,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20714 to 16670. [2022-12-13 18:30:28,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16670 states, 12389 states have (on average 1.2741948502704012) internal successors, (15786), 12502 states have internal predecessors, (15786), 2734 states have call successors, (2734), 1546 states have call predecessors, (2734), 1546 states have return successors, (2734), 2621 states have call predecessors, (2734), 2734 states have call successors, (2734) [2022-12-13 18:30:28,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16670 states to 16670 states and 21254 transitions. [2022-12-13 18:30:28,659 INFO L78 Accepts]: Start accepts. Automaton has 16670 states and 21254 transitions. Word has length 178 [2022-12-13 18:30:28,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:30:28,659 INFO L495 AbstractCegarLoop]: Abstraction has 16670 states and 21254 transitions. [2022-12-13 18:30:28,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 6 states have internal predecessors, (110), 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 18:30:28,659 INFO L276 IsEmpty]: Start isEmpty. Operand 16670 states and 21254 transitions. [2022-12-13 18:30:28,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-12-13 18:30:28,662 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:30:28,663 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 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 18:30:28,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-12-13 18:30:28,663 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:30:28,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:28,663 INFO L85 PathProgramCache]: Analyzing trace with hash 2012173287, now seen corresponding path program 1 times [2022-12-13 18:30:28,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:28,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357174691] [2022-12-13 18:30:28,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:28,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:29,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:30:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:29,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:30:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:29,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:30:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:29,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 18:30:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:29,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:30:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:29,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 18:30:29,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:29,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 18:30:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:29,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 18:30:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:29,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 18:30:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:29,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 18:30:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:29,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 18:30:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:29,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 18:30:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:29,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 18:30:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:29,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-12-13 18:30:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:29,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-12-13 18:30:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:29,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-12-13 18:30:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:29,088 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-12-13 18:30:29,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:29,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357174691] [2022-12-13 18:30:29,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357174691] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:30:29,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431764962] [2022-12-13 18:30:29,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:29,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:30:29,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:30:29,090 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:30:29,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 18:30:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:29,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 794 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 18:30:29,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:30:29,394 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 28 proven. 54 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 18:30:29,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:30:29,533 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2022-12-13 18:30:29,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431764962] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:30:29,533 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:30:29,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-12-13 18:30:29,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189753579] [2022-12-13 18:30:29,534 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:30:29,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 18:30:29,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:29,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 18:30:29,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:30:29,535 INFO L87 Difference]: Start difference. First operand 16670 states and 21254 transitions. Second operand has 16 states, 16 states have (on average 15.1875) internal successors, (243), 15 states have internal predecessors, (243), 7 states have call successors, (47), 4 states have call predecessors, (47), 6 states have return successors, (46), 8 states have call predecessors, (46), 7 states have call successors, (46) [2022-12-13 18:30:52,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:30:52,566 INFO L93 Difference]: Finished difference Result 53755 states and 72813 transitions. [2022-12-13 18:30:52,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2022-12-13 18:30:52,568 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 15.1875) internal successors, (243), 15 states have internal predecessors, (243), 7 states have call successors, (47), 4 states have call predecessors, (47), 6 states have return successors, (46), 8 states have call predecessors, (46), 7 states have call successors, (46) Word has length 178 [2022-12-13 18:30:52,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:30:52,647 INFO L225 Difference]: With dead ends: 53755 [2022-12-13 18:30:52,647 INFO L226 Difference]: Without dead ends: 38292 [2022-12-13 18:30:52,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 579 GetRequests, 460 SyntacticMatches, 1 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5057 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1944, Invalid=12336, Unknown=0, NotChecked=0, Total=14280 [2022-12-13 18:30:52,669 INFO L413 NwaCegarLoop]: 1229 mSDtfsCounter, 3127 mSDsluCounter, 8118 mSDsCounter, 0 mSdLazyCounter, 8745 mSolverCounterSat, 3125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3127 SdHoareTripleChecker+Valid, 9347 SdHoareTripleChecker+Invalid, 11870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3125 IncrementalHoareTripleChecker+Valid, 8745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:30:52,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3127 Valid, 9347 Invalid, 11870 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3125 Valid, 8745 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-12-13 18:30:52,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38292 states. [2022-12-13 18:30:58,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38292 to 20911. [2022-12-13 18:30:58,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20911 states, 15496 states have (on average 1.2762648425400103) internal successors, (19777), 15646 states have internal predecessors, (19777), 3464 states have call successors, (3464), 1950 states have call predecessors, (3464), 1950 states have return successors, (3464), 3314 states have call predecessors, (3464), 3464 states have call successors, (3464) [2022-12-13 18:30:58,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20911 states to 20911 states and 26705 transitions. [2022-12-13 18:30:58,389 INFO L78 Accepts]: Start accepts. Automaton has 20911 states and 26705 transitions. Word has length 178 [2022-12-13 18:30:58,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:30:58,389 INFO L495 AbstractCegarLoop]: Abstraction has 20911 states and 26705 transitions. [2022-12-13 18:30:58,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.1875) internal successors, (243), 15 states have internal predecessors, (243), 7 states have call successors, (47), 4 states have call predecessors, (47), 6 states have return successors, (46), 8 states have call predecessors, (46), 7 states have call successors, (46) [2022-12-13 18:30:58,390 INFO L276 IsEmpty]: Start isEmpty. Operand 20911 states and 26705 transitions. [2022-12-13 18:30:58,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-12-13 18:30:58,393 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:30:58,393 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 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 18:30:58,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-12-13 18:30:58,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-12-13 18:30:58,595 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:30:58,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:30:58,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1051233495, now seen corresponding path program 1 times [2022-12-13 18:30:58,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:30:58,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54681423] [2022-12-13 18:30:58,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:58,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:30:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:58,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:30:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:58,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:30:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:58,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 18:30:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:58,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 18:30:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:58,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 18:30:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:58,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:30:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:58,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 18:30:58,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:58,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 18:30:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:58,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 18:30:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:58,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 18:30:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:58,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 18:30:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:58,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 18:30:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:58,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 18:30:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:58,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 18:30:58,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:58,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 18:30:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:58,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-12-13 18:30:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:58,958 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-12-13 18:30:58,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:30:58,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54681423] [2022-12-13 18:30:58,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54681423] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:30:58,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924352083] [2022-12-13 18:30:58,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:30:58,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:30:58,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:30:58,959 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:30:58,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 18:30:59,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:30:59,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 30 conjunts are in the unsatisfiable core [2022-12-13 18:30:59,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:30:59,382 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 77 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-13 18:30:59,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:30:59,798 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-12-13 18:30:59,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924352083] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:30:59,799 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:30:59,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 9] total 28 [2022-12-13 18:30:59,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038538804] [2022-12-13 18:30:59,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:30:59,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 18:30:59,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:30:59,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 18:30:59,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=616, Unknown=0, NotChecked=0, Total=756 [2022-12-13 18:30:59,800 INFO L87 Difference]: Start difference. First operand 20911 states and 26705 transitions. Second operand has 28 states, 28 states have (on average 10.357142857142858) internal successors, (290), 28 states have internal predecessors, (290), 11 states have call successors, (43), 5 states have call predecessors, (43), 5 states have return successors, (42), 11 states have call predecessors, (42), 11 states have call successors, (42) [2022-12-13 18:31:18,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:31:18,386 INFO L93 Difference]: Finished difference Result 55495 states and 74076 transitions. [2022-12-13 18:31:18,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-13 18:31:18,387 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.357142857142858) internal successors, (290), 28 states have internal predecessors, (290), 11 states have call successors, (43), 5 states have call predecessors, (43), 5 states have return successors, (42), 11 states have call predecessors, (42), 11 states have call successors, (42) Word has length 179 [2022-12-13 18:31:18,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:31:18,458 INFO L225 Difference]: With dead ends: 55495 [2022-12-13 18:31:18,458 INFO L226 Difference]: Without dead ends: 35651 [2022-12-13 18:31:18,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2177 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1012, Invalid=5630, Unknown=0, NotChecked=0, Total=6642 [2022-12-13 18:31:18,481 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 3954 mSDsluCounter, 6392 mSDsCounter, 0 mSdLazyCounter, 7604 mSolverCounterSat, 2075 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3954 SdHoareTripleChecker+Valid, 7114 SdHoareTripleChecker+Invalid, 9679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2075 IncrementalHoareTripleChecker+Valid, 7604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:31:18,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3954 Valid, 7114 Invalid, 9679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2075 Valid, 7604 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-12-13 18:31:18,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35651 states. [2022-12-13 18:31:24,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35651 to 23089. [2022-12-13 18:31:24,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23089 states, 17112 states have (on average 1.2718560074801308) internal successors, (21764), 17279 states have internal predecessors, (21764), 3820 states have call successors, (3820), 2156 states have call predecessors, (3820), 2156 states have return successors, (3820), 3653 states have call predecessors, (3820), 3820 states have call successors, (3820) [2022-12-13 18:31:25,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23089 states to 23089 states and 29404 transitions. [2022-12-13 18:31:25,022 INFO L78 Accepts]: Start accepts. Automaton has 23089 states and 29404 transitions. Word has length 179 [2022-12-13 18:31:25,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:31:25,022 INFO L495 AbstractCegarLoop]: Abstraction has 23089 states and 29404 transitions. [2022-12-13 18:31:25,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.357142857142858) internal successors, (290), 28 states have internal predecessors, (290), 11 states have call successors, (43), 5 states have call predecessors, (43), 5 states have return successors, (42), 11 states have call predecessors, (42), 11 states have call successors, (42) [2022-12-13 18:31:25,022 INFO L276 IsEmpty]: Start isEmpty. Operand 23089 states and 29404 transitions. [2022-12-13 18:31:25,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-12-13 18:31:25,026 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:31:25,027 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 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] [2022-12-13 18:31:25,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 18:31:25,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:31:25,227 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:31:25,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:25,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1421865861, now seen corresponding path program 1 times [2022-12-13 18:31:25,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:25,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757506381] [2022-12-13 18:31:25,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:25,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:25,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:31:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:25,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:31:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:25,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:31:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:25,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 18:31:25,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:25,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:31:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:25,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 18:31:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:25,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 18:31:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:25,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 18:31:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:25,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 18:31:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:25,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 18:31:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:25,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 18:31:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:25,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 18:31:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:25,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 18:31:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:25,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 18:31:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:25,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 18:31:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:25,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-12-13 18:31:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:25,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 18:31:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:25,706 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-12-13 18:31:25,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:25,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757506381] [2022-12-13 18:31:25,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757506381] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:31:25,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516351331] [2022-12-13 18:31:25,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:25,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:31:25,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:31:25,708 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:31:25,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 18:31:25,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:25,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 18:31:25,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:31:25,941 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-12-13 18:31:25,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:31:25,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516351331] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:25,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:31:25,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-12-13 18:31:25,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172261764] [2022-12-13 18:31:25,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:25,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:31:25,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:25,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:31:25,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:31:25,943 INFO L87 Difference]: Start difference. First operand 23089 states and 29404 transitions. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 6 states have internal predecessors, (126), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 18:31:35,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:31:35,629 INFO L93 Difference]: Finished difference Result 48004 states and 62787 transitions. [2022-12-13 18:31:35,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 18:31:35,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 6 states have internal predecessors, (126), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 180 [2022-12-13 18:31:35,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:31:35,692 INFO L225 Difference]: With dead ends: 48004 [2022-12-13 18:31:35,692 INFO L226 Difference]: Without dead ends: 27960 [2022-12-13 18:31:35,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2022-12-13 18:31:35,714 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 543 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:31:35,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1769 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:31:35,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27960 states. [2022-12-13 18:31:42,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27960 to 22827. [2022-12-13 18:31:42,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22827 states, 16918 states have (on average 1.269476297434685) internal successors, (21477), 17081 states have internal predecessors, (21477), 3780 states have call successors, (3780), 2128 states have call predecessors, (3780), 2128 states have return successors, (3780), 3617 states have call predecessors, (3780), 3780 states have call successors, (3780) [2022-12-13 18:31:42,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22827 states to 22827 states and 29037 transitions. [2022-12-13 18:31:42,330 INFO L78 Accepts]: Start accepts. Automaton has 22827 states and 29037 transitions. Word has length 180 [2022-12-13 18:31:42,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:31:42,331 INFO L495 AbstractCegarLoop]: Abstraction has 22827 states and 29037 transitions. [2022-12-13 18:31:42,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 6 states have internal predecessors, (126), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-13 18:31:42,331 INFO L276 IsEmpty]: Start isEmpty. Operand 22827 states and 29037 transitions. [2022-12-13 18:31:42,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-12-13 18:31:42,335 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:31:42,335 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 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 18:31:42,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 18:31:42,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:31:42,536 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:31:42,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:42,537 INFO L85 PathProgramCache]: Analyzing trace with hash 128790188, now seen corresponding path program 1 times [2022-12-13 18:31:42,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:42,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697826893] [2022-12-13 18:31:42,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:42,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:42,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:31:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:42,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:31:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:42,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 18:31:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:42,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 18:31:42,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:42,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 18:31:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:42,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:31:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:42,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 18:31:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:42,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 18:31:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:42,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 18:31:42,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:42,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 18:31:42,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:42,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 18:31:42,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:42,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 18:31:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:42,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 18:31:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:42,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 18:31:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:42,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-12-13 18:31:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:42,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 18:31:42,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:42,641 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-12-13 18:31:42,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:42,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697826893] [2022-12-13 18:31:42,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697826893] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:31:42,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:31:42,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:31:42,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225538592] [2022-12-13 18:31:42,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:31:42,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:31:42,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:42,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:31:42,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:31:42,642 INFO L87 Difference]: Start difference. First operand 22827 states and 29037 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-13 18:31:49,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:31:49,612 INFO L93 Difference]: Finished difference Result 44242 states and 56614 transitions. [2022-12-13 18:31:49,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 18:31:49,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 180 [2022-12-13 18:31:49,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:31:49,656 INFO L225 Difference]: With dead ends: 44242 [2022-12-13 18:31:49,656 INFO L226 Difference]: Without dead ends: 24419 [2022-12-13 18:31:49,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 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 18:31:49,678 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 333 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1136 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:31:49,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 1136 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:31:49,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24419 states. [2022-12-13 18:31:56,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24419 to 23041. [2022-12-13 18:31:56,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23041 states, 17069 states have (on average 1.2666822895307281) internal successors, (21621), 17238 states have internal predecessors, (21621), 3814 states have call successors, (3814), 2157 states have call predecessors, (3814), 2157 states have return successors, (3814), 3645 states have call predecessors, (3814), 3814 states have call successors, (3814) [2022-12-13 18:31:56,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23041 states to 23041 states and 29249 transitions. [2022-12-13 18:31:56,153 INFO L78 Accepts]: Start accepts. Automaton has 23041 states and 29249 transitions. Word has length 180 [2022-12-13 18:31:56,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:31:56,153 INFO L495 AbstractCegarLoop]: Abstraction has 23041 states and 29249 transitions. [2022-12-13 18:31:56,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-13 18:31:56,154 INFO L276 IsEmpty]: Start isEmpty. Operand 23041 states and 29249 transitions. [2022-12-13 18:31:56,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-12-13 18:31:56,157 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:31:56,157 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 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 18:31:56,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-12-13 18:31:56,158 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:31:56,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:31:56,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2128193427, now seen corresponding path program 1 times [2022-12-13 18:31:56,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:31:56,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197215916] [2022-12-13 18:31:56,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:56,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:31:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:56,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:31:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:56,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:31:56,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:56,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 18:31:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:56,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 18:31:56,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:56,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 18:31:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:56,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 18:31:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:56,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 18:31:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:56,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 18:31:56,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:56,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 18:31:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:56,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 18:31:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:56,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 18:31:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:56,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 18:31:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:56,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 18:31:56,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:56,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 18:31:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:56,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-12-13 18:31:56,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:56,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-12-13 18:31:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:56,708 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 17 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-12-13 18:31:56,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:31:56,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197215916] [2022-12-13 18:31:56,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197215916] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:31:56,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090524484] [2022-12-13 18:31:56,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:31:56,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:31:56,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:31:56,709 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:31:56,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 18:31:56,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:31:56,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 808 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 18:31:56,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:31:56,919 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 45 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 18:31:56,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:31:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-12-13 18:31:56,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090524484] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:31:56,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:31:56,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 16 [2022-12-13 18:31:56,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134681432] [2022-12-13 18:31:56,990 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:31:56,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 18:31:56,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:31:56,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 18:31:56,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-12-13 18:31:56,991 INFO L87 Difference]: Start difference. First operand 23041 states and 29249 transitions. Second operand has 16 states, 16 states have (on average 13.8125) internal successors, (221), 15 states have internal predecessors, (221), 6 states have call successors, (41), 4 states have call predecessors, (41), 6 states have return successors, (41), 7 states have call predecessors, (41), 6 states have call successors, (41) [2022-12-13 18:32:14,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:32:14,132 INFO L93 Difference]: Finished difference Result 57819 states and 76545 transitions. [2022-12-13 18:32:14,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-12-13 18:32:14,133 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 13.8125) internal successors, (221), 15 states have internal predecessors, (221), 6 states have call successors, (41), 4 states have call predecessors, (41), 6 states have return successors, (41), 7 states have call predecessors, (41), 6 states have call successors, (41) Word has length 180 [2022-12-13 18:32:14,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:32:14,204 INFO L225 Difference]: With dead ends: 57819 [2022-12-13 18:32:14,204 INFO L226 Difference]: Without dead ends: 34958 [2022-12-13 18:32:14,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1482 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=633, Invalid=4479, Unknown=0, NotChecked=0, Total=5112 [2022-12-13 18:32:14,230 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 1130 mSDsluCounter, 8405 mSDsCounter, 0 mSdLazyCounter, 5669 mSolverCounterSat, 530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 9302 SdHoareTripleChecker+Invalid, 6199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 5669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:32:14,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1131 Valid, 9302 Invalid, 6199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [530 Valid, 5669 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 18:32:14,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34958 states. [2022-12-13 18:32:21,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34958 to 23254. [2022-12-13 18:32:21,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23254 states, 17231 states have (on average 1.2667285705995008) internal successors, (21827), 17400 states have internal predecessors, (21827), 3848 states have call successors, (3848), 2174 states have call predecessors, (3848), 2174 states have return successors, (3848), 3679 states have call predecessors, (3848), 3848 states have call successors, (3848) [2022-12-13 18:32:21,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23254 states to 23254 states and 29523 transitions. [2022-12-13 18:32:21,244 INFO L78 Accepts]: Start accepts. Automaton has 23254 states and 29523 transitions. Word has length 180 [2022-12-13 18:32:21,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:32:21,244 INFO L495 AbstractCegarLoop]: Abstraction has 23254 states and 29523 transitions. [2022-12-13 18:32:21,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 13.8125) internal successors, (221), 15 states have internal predecessors, (221), 6 states have call successors, (41), 4 states have call predecessors, (41), 6 states have return successors, (41), 7 states have call predecessors, (41), 6 states have call successors, (41) [2022-12-13 18:32:21,244 INFO L276 IsEmpty]: Start isEmpty. Operand 23254 states and 29523 transitions. [2022-12-13 18:32:21,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-12-13 18:32:21,248 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:32:21,248 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-12-13 18:32:21,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 18:32:21,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2022-12-13 18:32:21,450 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:32:21,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:21,451 INFO L85 PathProgramCache]: Analyzing trace with hash -757763315, now seen corresponding path program 1 times [2022-12-13 18:32:21,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:21,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612928242] [2022-12-13 18:32:21,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:21,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:21,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:21,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:32:21,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:21,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:32:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:21,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 18:32:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:21,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 18:32:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:21,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 18:32:21,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:21,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:32:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:21,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 18:32:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:21,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 18:32:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:21,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 18:32:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:21,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 18:32:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:21,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 18:32:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:21,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 18:32:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:21,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-12-13 18:32:21,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:21,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-12-13 18:32:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:21,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-12-13 18:32:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:21,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-12-13 18:32:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:21,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-12-13 18:32:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-12-13 18:32:21,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:32:21,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612928242] [2022-12-13 18:32:21,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612928242] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:32:21,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664657768] [2022-12-13 18:32:21,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:21,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:32:21,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:21,650 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:32:21,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 18:32:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:21,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 18:32:21,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:32:21,838 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 67 proven. 4 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-12-13 18:32:21,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:32:21,927 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-12-13 18:32:21,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664657768] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:32:21,928 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:32:21,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-12-13 18:32:21,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001341125] [2022-12-13 18:32:21,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:32:21,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 18:32:21,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:32:21,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 18:32:21,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-12-13 18:32:21,929 INFO L87 Difference]: Start difference. First operand 23254 states and 29523 transitions. Second operand has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 8 states have internal predecessors, (161), 3 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2022-12-13 18:32:32,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:32:32,854 INFO L93 Difference]: Finished difference Result 54358 states and 71102 transitions. [2022-12-13 18:32:32,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 18:32:32,855 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 8 states have internal predecessors, (161), 3 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) Word has length 189 [2022-12-13 18:32:32,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:32:32,919 INFO L225 Difference]: With dead ends: 54358 [2022-12-13 18:32:32,919 INFO L226 Difference]: Without dead ends: 31284 [2022-12-13 18:32:32,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 409 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:32:32,947 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 212 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 2043 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:32:32,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 2043 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 18:32:32,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31284 states. [2022-12-13 18:32:40,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31284 to 23254. [2022-12-13 18:32:40,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23254 states, 17231 states have (on average 1.2665544657884047) internal successors, (21824), 17400 states have internal predecessors, (21824), 3848 states have call successors, (3848), 2174 states have call predecessors, (3848), 2174 states have return successors, (3848), 3679 states have call predecessors, (3848), 3848 states have call successors, (3848) [2022-12-13 18:32:40,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23254 states to 23254 states and 29520 transitions. [2022-12-13 18:32:40,153 INFO L78 Accepts]: Start accepts. Automaton has 23254 states and 29520 transitions. Word has length 189 [2022-12-13 18:32:40,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:32:40,153 INFO L495 AbstractCegarLoop]: Abstraction has 23254 states and 29520 transitions. [2022-12-13 18:32:40,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 17.88888888888889) internal successors, (161), 8 states have internal predecessors, (161), 3 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (33), 4 states have call predecessors, (33), 3 states have call successors, (33) [2022-12-13 18:32:40,153 INFO L276 IsEmpty]: Start isEmpty. Operand 23254 states and 29520 transitions. [2022-12-13 18:32:40,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-12-13 18:32:40,157 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:32:40,157 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, 1] [2022-12-13 18:32:40,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 18:32:40,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-12-13 18:32:40,359 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:32:40,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:32:40,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1615048857, now seen corresponding path program 1 times [2022-12-13 18:32:40,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:32:40,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127185852] [2022-12-13 18:32:40,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:40,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:32:40,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:41,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:32:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:41,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:32:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:41,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 18:32:41,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:41,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 18:32:41,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:41,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 18:32:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:41,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:32:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:41,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 18:32:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:41,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 18:32:41,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:41,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 18:32:41,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:41,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 18:32:41,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:41,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 18:32:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:41,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 18:32:41,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:41,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-12-13 18:32:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:41,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 18:32:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:41,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-12-13 18:32:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:41,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-12-13 18:32:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:41,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-12-13 18:32:41,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:41,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 18:32:41,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:41,103 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-12-13 18:32:41,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:32:41,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127185852] [2022-12-13 18:32:41,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127185852] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:32:41,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508803861] [2022-12-13 18:32:41,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:32:41,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:32:41,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:32:41,104 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:32:41,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 18:32:41,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:32:41,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 815 conjuncts, 44 conjunts are in the unsatisfiable core [2022-12-13 18:32:41,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:32:42,036 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 86 proven. 13 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-13 18:32:42,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:32:43,448 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 17 proven. 17 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-12-13 18:32:43,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508803861] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:32:43,448 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:32:43,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 12] total 25 [2022-12-13 18:32:43,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079800948] [2022-12-13 18:32:43,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:32:43,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 18:32:43,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:32:43,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 18:32:43,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2022-12-13 18:32:43,449 INFO L87 Difference]: Start difference. First operand 23254 states and 29520 transitions. Second operand has 25 states, 25 states have (on average 11.72) internal successors, (293), 25 states have internal predecessors, (293), 10 states have call successors, (48), 5 states have call predecessors, (48), 5 states have return successors, (47), 10 states have call predecessors, (47), 10 states have call successors, (47) [2022-12-13 18:33:01,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:01,611 INFO L93 Difference]: Finished difference Result 49406 states and 64439 transitions. [2022-12-13 18:33:01,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-12-13 18:33:01,612 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 11.72) internal successors, (293), 25 states have internal predecessors, (293), 10 states have call successors, (48), 5 states have call predecessors, (48), 5 states have return successors, (47), 10 states have call predecessors, (47), 10 states have call successors, (47) Word has length 196 [2022-12-13 18:33:01,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:01,668 INFO L225 Difference]: With dead ends: 49406 [2022-12-13 18:33:01,668 INFO L226 Difference]: Without dead ends: 28697 [2022-12-13 18:33:01,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 413 SyntacticMatches, 3 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2143 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1643, Invalid=5839, Unknown=0, NotChecked=0, Total=7482 [2022-12-13 18:33:01,691 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 2729 mSDsluCounter, 2793 mSDsCounter, 0 mSdLazyCounter, 2562 mSolverCounterSat, 1355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2729 SdHoareTripleChecker+Valid, 3361 SdHoareTripleChecker+Invalid, 3917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1355 IncrementalHoareTripleChecker+Valid, 2562 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:01,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2729 Valid, 3361 Invalid, 3917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1355 Valid, 2562 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 18:33:01,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28697 states. [2022-12-13 18:33:09,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28697 to 23017. [2022-12-13 18:33:09,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23017 states, 17072 states have (on average 1.2693298969072164) internal successors, (21670), 17231 states have internal predecessors, (21670), 3794 states have call successors, (3794), 2150 states have call predecessors, (3794), 2150 states have return successors, (3794), 3635 states have call predecessors, (3794), 3794 states have call successors, (3794) [2022-12-13 18:33:09,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23017 states to 23017 states and 29258 transitions. [2022-12-13 18:33:09,147 INFO L78 Accepts]: Start accepts. Automaton has 23017 states and 29258 transitions. Word has length 196 [2022-12-13 18:33:09,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:09,147 INFO L495 AbstractCegarLoop]: Abstraction has 23017 states and 29258 transitions. [2022-12-13 18:33:09,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.72) internal successors, (293), 25 states have internal predecessors, (293), 10 states have call successors, (48), 5 states have call predecessors, (48), 5 states have return successors, (47), 10 states have call predecessors, (47), 10 states have call successors, (47) [2022-12-13 18:33:09,147 INFO L276 IsEmpty]: Start isEmpty. Operand 23017 states and 29258 transitions. [2022-12-13 18:33:09,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-12-13 18:33:09,150 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:09,151 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:33:09,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 18:33:09,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2022-12-13 18:33:09,352 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:09,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:09,353 INFO L85 PathProgramCache]: Analyzing trace with hash 477802101, now seen corresponding path program 1 times [2022-12-13 18:33:09,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:09,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557042947] [2022-12-13 18:33:09,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:09,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:09,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:33:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:33:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 18:33:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 18:33:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 18:33:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 18:33:09,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 18:33:09,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 18:33:09,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 18:33:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 18:33:09,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 18:33:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 18:33:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 18:33:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-12-13 18:33:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-12-13 18:33:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-12-13 18:33:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-12-13 18:33:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-12-13 18:33:09,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,722 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 23 proven. 11 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-12-13 18:33:09,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:09,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557042947] [2022-12-13 18:33:09,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557042947] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:33:09,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562400273] [2022-12-13 18:33:09,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:09,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:09,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:33:09,723 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:33:09,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 18:33:09,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:09,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-13 18:33:09,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:33:09,954 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-12-13 18:33:09,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 18:33:09,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562400273] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:33:09,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 18:33:09,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-12-13 18:33:09,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201374876] [2022-12-13 18:33:09,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:33:09,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 18:33:09,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:09,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 18:33:09,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-12-13 18:33:09,956 INFO L87 Difference]: Start difference. First operand 23017 states and 29258 transitions. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-13 18:33:21,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:21,666 INFO L93 Difference]: Finished difference Result 51766 states and 67544 transitions. [2022-12-13 18:33:21,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 18:33:21,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 196 [2022-12-13 18:33:21,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:21,728 INFO L225 Difference]: With dead ends: 51766 [2022-12-13 18:33:21,728 INFO L226 Difference]: Without dead ends: 29163 [2022-12-13 18:33:21,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-12-13 18:33:21,751 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 571 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:21,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 1895 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 18:33:21,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29163 states. [2022-12-13 18:33:29,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29163 to 23017. [2022-12-13 18:33:29,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23017 states, 17072 states have (on average 1.2632380506091847) internal successors, (21566), 17231 states have internal predecessors, (21566), 3794 states have call successors, (3794), 2150 states have call predecessors, (3794), 2150 states have return successors, (3794), 3635 states have call predecessors, (3794), 3794 states have call successors, (3794) [2022-12-13 18:33:29,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23017 states to 23017 states and 29154 transitions. [2022-12-13 18:33:29,235 INFO L78 Accepts]: Start accepts. Automaton has 23017 states and 29154 transitions. Word has length 196 [2022-12-13 18:33:29,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:29,236 INFO L495 AbstractCegarLoop]: Abstraction has 23017 states and 29154 transitions. [2022-12-13 18:33:29,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 6 states have internal predecessors, (138), 3 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-12-13 18:33:29,236 INFO L276 IsEmpty]: Start isEmpty. Operand 23017 states and 29154 transitions. [2022-12-13 18:33:29,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-12-13 18:33:29,239 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:29,239 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 18:33:29,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-13 18:33:29,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:29,441 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:29,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:29,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1936883292, now seen corresponding path program 1 times [2022-12-13 18:33:29,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:29,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20698170] [2022-12-13 18:33:29,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:29,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:29,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:33:29,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:29,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:33:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:29,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 18:33:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:29,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 18:33:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:29,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 18:33:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:29,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:33:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:29,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 18:33:29,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:29,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 18:33:29,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:29,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 18:33:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:29,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 18:33:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:29,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 18:33:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:29,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 18:33:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:29,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 18:33:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:29,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-12-13 18:33:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:29,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-12-13 18:33:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:29,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-12-13 18:33:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:29,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-12-13 18:33:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:29,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-12-13 18:33:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:29,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-12-13 18:33:29,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:29,763 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 18:33:29,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:29,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20698170] [2022-12-13 18:33:29,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20698170] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:33:29,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228114449] [2022-12-13 18:33:29,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:29,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:29,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:33:29,765 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:33:29,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-13 18:33:29,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:29,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 18:33:29,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:33:30,065 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 18:33:30,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:33:30,237 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 18:33:30,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228114449] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:33:30,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:33:30,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 17 [2022-12-13 18:33:30,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942091301] [2022-12-13 18:33:30,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:33:30,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 18:33:30,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:30,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 18:33:30,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:33:30,240 INFO L87 Difference]: Start difference. First operand 23017 states and 29154 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 18:33:48,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:33:48,769 INFO L93 Difference]: Finished difference Result 52698 states and 68324 transitions. [2022-12-13 18:33:48,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-12-13 18:33:48,770 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 18:33:48,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:33:48,847 INFO L225 Difference]: With dead ends: 52698 [2022-12-13 18:33:48,847 INFO L226 Difference]: Without dead ends: 31763 [2022-12-13 18:33:48,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 467 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2533 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1214, Invalid=6618, Unknown=0, NotChecked=0, Total=7832 [2022-12-13 18:33:48,878 INFO L413 NwaCegarLoop]: 799 mSDtfsCounter, 4288 mSDsluCounter, 6454 mSDsCounter, 0 mSdLazyCounter, 2915 mSolverCounterSat, 2620 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4288 SdHoareTripleChecker+Valid, 7253 SdHoareTripleChecker+Invalid, 5535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2620 IncrementalHoareTripleChecker+Valid, 2915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:33:48,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4288 Valid, 7253 Invalid, 5535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2620 Valid, 2915 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 18:33:48,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31763 states. [2022-12-13 18:33:55,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31763 to 17265. [2022-12-13 18:33:55,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17265 states, 12948 states have (on average 1.251004016064257) internal successors, (16198), 13060 states have internal predecessors, (16198), 2673 states have call successors, (2673), 1643 states have call predecessors, (2673), 1643 states have return successors, (2673), 2561 states have call predecessors, (2673), 2673 states have call successors, (2673) [2022-12-13 18:33:55,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17265 states to 17265 states and 21544 transitions. [2022-12-13 18:33:55,474 INFO L78 Accepts]: Start accepts. Automaton has 17265 states and 21544 transitions. Word has length 201 [2022-12-13 18:33:55,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:33:55,474 INFO L495 AbstractCegarLoop]: Abstraction has 17265 states and 21544 transitions. [2022-12-13 18:33:55,475 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 18:33:55,475 INFO L276 IsEmpty]: Start isEmpty. Operand 17265 states and 21544 transitions. [2022-12-13 18:33:55,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-12-13 18:33:55,478 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:33:55,478 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:33:55,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-12-13 18:33:55,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:55,679 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:33:55,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:33:55,680 INFO L85 PathProgramCache]: Analyzing trace with hash -858290491, now seen corresponding path program 1 times [2022-12-13 18:33:55,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:33:55,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484557271] [2022-12-13 18:33:55,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:55,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:33:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:56,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:33:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:56,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:33:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:56,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 18:33:56,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:56,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 18:33:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:56,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 18:33:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:56,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 18:33:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:56,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 18:33:56,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:56,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 18:33:56,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:56,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 18:33:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:56,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 18:33:56,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:56,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 18:33:56,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:56,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 18:33:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:56,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 18:33:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:56,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 18:33:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:56,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-12-13 18:33:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:56,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-12-13 18:33:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:56,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-12-13 18:33:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:56,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-12-13 18:33:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:56,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-12-13 18:33:56,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:56,039 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 26 proven. 11 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-12-13 18:33:56,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:33:56,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484557271] [2022-12-13 18:33:56,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484557271] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:33:56,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1833068227] [2022-12-13 18:33:56,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:33:56,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:33:56,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:33:56,041 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:33:56,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-13 18:33:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:33:56,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 18:33:56,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:33:56,294 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 103 proven. 4 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-12-13 18:33:56,294 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:33:56,391 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 35 proven. 6 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-12-13 18:33:56,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1833068227] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:33:56,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:33:56,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2022-12-13 18:33:56,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217512685] [2022-12-13 18:33:56,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:33:56,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 18:33:56,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:33:56,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 18:33:56,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-12-13 18:33:56,393 INFO L87 Difference]: Start difference. First operand 17265 states and 21544 transitions. Second operand has 14 states, 14 states have (on average 17.285714285714285) internal successors, (242), 13 states have internal predecessors, (242), 6 states have call successors, (50), 4 states have call predecessors, (50), 6 states have return successors, (50), 7 states have call predecessors, (50), 6 states have call successors, (50) [2022-12-13 18:34:12,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:34:12,460 INFO L93 Difference]: Finished difference Result 41776 states and 54395 transitions. [2022-12-13 18:34:12,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-13 18:34:12,461 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.285714285714285) internal successors, (242), 13 states have internal predecessors, (242), 6 states have call successors, (50), 4 states have call predecessors, (50), 6 states have return successors, (50), 7 states have call predecessors, (50), 6 states have call successors, (50) Word has length 204 [2022-12-13 18:34:12,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:34:12,509 INFO L225 Difference]: With dead ends: 41776 [2022-12-13 18:34:12,509 INFO L226 Difference]: Without dead ends: 25005 [2022-12-13 18:34:12,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 513 GetRequests, 450 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1171 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=566, Invalid=3466, Unknown=0, NotChecked=0, Total=4032 [2022-12-13 18:34:12,526 INFO L413 NwaCegarLoop]: 750 mSDtfsCounter, 1457 mSDsluCounter, 5907 mSDsCounter, 0 mSdLazyCounter, 4174 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 6657 SdHoareTripleChecker+Invalid, 4706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 4174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 18:34:12,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1461 Valid, 6657 Invalid, 4706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 4174 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 18:34:12,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25005 states. [2022-12-13 18:34:19,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25005 to 16934. [2022-12-13 18:34:19,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16934 states, 12729 states have (on average 1.2537512766124597) internal successors, (15959), 12839 states have internal predecessors, (15959), 2607 states have call successors, (2607), 1597 states have call predecessors, (2607), 1597 states have return successors, (2607), 2497 states have call predecessors, (2607), 2607 states have call successors, (2607) [2022-12-13 18:34:19,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16934 states to 16934 states and 21173 transitions. [2022-12-13 18:34:19,068 INFO L78 Accepts]: Start accepts. Automaton has 16934 states and 21173 transitions. Word has length 204 [2022-12-13 18:34:19,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:34:19,068 INFO L495 AbstractCegarLoop]: Abstraction has 16934 states and 21173 transitions. [2022-12-13 18:34:19,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.285714285714285) internal successors, (242), 13 states have internal predecessors, (242), 6 states have call successors, (50), 4 states have call predecessors, (50), 6 states have return successors, (50), 7 states have call predecessors, (50), 6 states have call successors, (50) [2022-12-13 18:34:19,068 INFO L276 IsEmpty]: Start isEmpty. Operand 16934 states and 21173 transitions. [2022-12-13 18:34:19,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-12-13 18:34:19,071 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:34:19,071 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, 1] [2022-12-13 18:34:19,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-12-13 18:34:19,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-12-13 18:34:19,273 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:34:19,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:34:19,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1584866663, now seen corresponding path program 1 times [2022-12-13 18:34:19,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:34:19,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664338561] [2022-12-13 18:34:19,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:19,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:34:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:34:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:34:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:34:19,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 18:34:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:34:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 18:34:19,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 18:34:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 18:34:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 18:34:19,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 18:34:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 18:34:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 18:34:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 18:34:19,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-12-13 18:34:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-12-13 18:34:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-12-13 18:34:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-12-13 18:34:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-12-13 18:34:19,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-12-13 18:34:19,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-12-13 18:34:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-12-13 18:34:19,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,664 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 18:34:19,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:34:19,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664338561] [2022-12-13 18:34:19,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664338561] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:34:19,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357429629] [2022-12-13 18:34:19,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:19,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:34:19,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:34:19,665 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:34:19,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-13 18:34:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:19,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 18:34:19,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:34:19,929 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 18:34:19,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:34:20,231 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 18:34:20,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357429629] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:34:20,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:34:20,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 17 [2022-12-13 18:34:20,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680846166] [2022-12-13 18:34:20,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:34:20,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 18:34:20,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:34:20,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 18:34:20,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:34:20,233 INFO L87 Difference]: Start difference. First operand 16934 states and 21173 transitions. Second operand has 17 states, 17 states have (on average 12.764705882352942) internal successors, (217), 17 states have internal predecessors, (217), 7 states have call successors, (44), 6 states have call predecessors, (44), 6 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) [2022-12-13 18:34:31,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:34:31,983 INFO L93 Difference]: Finished difference Result 37932 states and 48320 transitions. [2022-12-13 18:34:31,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 18:34:31,984 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 12.764705882352942) internal successors, (217), 17 states have internal predecessors, (217), 7 states have call successors, (44), 6 states have call predecessors, (44), 6 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) Word has length 213 [2022-12-13 18:34:31,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:34:32,020 INFO L225 Difference]: With dead ends: 37932 [2022-12-13 18:34:32,020 INFO L226 Difference]: Without dead ends: 22904 [2022-12-13 18:34:32,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 466 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=249, Invalid=807, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 18:34:32,035 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 1499 mSDsluCounter, 3984 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 733 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1499 SdHoareTripleChecker+Valid, 4487 SdHoareTripleChecker+Invalid, 3032 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 733 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 18:34:32,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1499 Valid, 4487 Invalid, 3032 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [733 Valid, 2299 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 18:34:32,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22904 states. [2022-12-13 18:34:39,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22904 to 19992. [2022-12-13 18:34:39,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19992 states, 15018 states have (on average 1.2525635903582368) internal successors, (18811), 15151 states have internal predecessors, (18811), 3080 states have call successors, (3080), 1893 states have call predecessors, (3080), 1893 states have return successors, (3080), 2947 states have call predecessors, (3080), 3080 states have call successors, (3080) [2022-12-13 18:34:39,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19992 states to 19992 states and 24971 transitions. [2022-12-13 18:34:39,703 INFO L78 Accepts]: Start accepts. Automaton has 19992 states and 24971 transitions. Word has length 213 [2022-12-13 18:34:39,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:34:39,704 INFO L495 AbstractCegarLoop]: Abstraction has 19992 states and 24971 transitions. [2022-12-13 18:34:39,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.764705882352942) internal successors, (217), 17 states have internal predecessors, (217), 7 states have call successors, (44), 6 states have call predecessors, (44), 6 states have return successors, (43), 6 states have call predecessors, (43), 6 states have call successors, (43) [2022-12-13 18:34:39,704 INFO L276 IsEmpty]: Start isEmpty. Operand 19992 states and 24971 transitions. [2022-12-13 18:34:39,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-12-13 18:34:39,707 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:34:39,707 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:34:39,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-12-13 18:34:39,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2022-12-13 18:34:39,909 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:34:39,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:34:39,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1722995895, now seen corresponding path program 1 times [2022-12-13 18:34:39,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:34:39,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434990707] [2022-12-13 18:34:39,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:39,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:34:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:40,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:34:40,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:40,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:34:40,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:40,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 18:34:40,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:40,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 18:34:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:40,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 18:34:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:40,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 18:34:40,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:40,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 18:34:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:40,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 18:34:40,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:40,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 18:34:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:40,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 18:34:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:40,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 18:34:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:40,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 18:34:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:40,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 18:34:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:40,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-12-13 18:34:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:40,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-12-13 18:34:40,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:40,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-12-13 18:34:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:40,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-12-13 18:34:40,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:40,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-12-13 18:34:40,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:40,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-12-13 18:34:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:40,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-12-13 18:34:40,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:40,579 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-12-13 18:34:40,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:34:40,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434990707] [2022-12-13 18:34:40,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434990707] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:34:40,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [733111102] [2022-12-13 18:34:40,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:34:40,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:34:40,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:34:40,581 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:34:40,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-13 18:34:40,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:34:40,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 18:34:40,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:34:40,910 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 128 proven. 31 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 18:34:40,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:34:41,118 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 46 proven. 8 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-12-13 18:34:41,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [733111102] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:34:41,118 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:34:41,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2022-12-13 18:34:41,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473097975] [2022-12-13 18:34:41,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:34:41,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 18:34:41,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:34:41,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 18:34:41,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2022-12-13 18:34:41,120 INFO L87 Difference]: Start difference. First operand 19992 states and 24971 transitions. Second operand has 22 states, 22 states have (on average 11.909090909090908) internal successors, (262), 19 states have internal predecessors, (262), 7 states have call successors, (52), 4 states have call predecessors, (52), 8 states have return successors, (52), 10 states have call predecessors, (52), 7 states have call successors, (52) [2022-12-13 18:35:15,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:35:15,690 INFO L93 Difference]: Finished difference Result 68560 states and 89849 transitions. [2022-12-13 18:35:15,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-12-13 18:35:15,691 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.909090909090908) internal successors, (262), 19 states have internal predecessors, (262), 7 states have call successors, (52), 4 states have call predecessors, (52), 8 states have return successors, (52), 10 states have call predecessors, (52), 7 states have call successors, (52) Word has length 212 [2022-12-13 18:35:15,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:35:15,804 INFO L225 Difference]: With dead ends: 68560 [2022-12-13 18:35:15,804 INFO L226 Difference]: Without dead ends: 50498 [2022-12-13 18:35:15,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 507 SyntacticMatches, 1 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5555 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1414, Invalid=15098, Unknown=0, NotChecked=0, Total=16512 [2022-12-13 18:35:15,832 INFO L413 NwaCegarLoop]: 1412 mSDtfsCounter, 1815 mSDsluCounter, 17380 mSDsCounter, 0 mSdLazyCounter, 10957 mSolverCounterSat, 1725 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1823 SdHoareTripleChecker+Valid, 18792 SdHoareTripleChecker+Invalid, 12682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1725 IncrementalHoareTripleChecker+Valid, 10957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-12-13 18:35:15,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1823 Valid, 18792 Invalid, 12682 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1725 Valid, 10957 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-12-13 18:35:15,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50498 states. [2022-12-13 18:35:27,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50498 to 28366. [2022-12-13 18:35:27,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28366 states, 21266 states have (on average 1.2552901344869745) internal successors, (26695), 21471 states have internal predecessors, (26695), 4393 states have call successors, (4393), 2706 states have call predecessors, (4393), 2706 states have return successors, (4393), 4188 states have call predecessors, (4393), 4393 states have call successors, (4393) [2022-12-13 18:35:27,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28366 states to 28366 states and 35481 transitions. [2022-12-13 18:35:27,672 INFO L78 Accepts]: Start accepts. Automaton has 28366 states and 35481 transitions. Word has length 212 [2022-12-13 18:35:27,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:35:27,673 INFO L495 AbstractCegarLoop]: Abstraction has 28366 states and 35481 transitions. [2022-12-13 18:35:27,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.909090909090908) internal successors, (262), 19 states have internal predecessors, (262), 7 states have call successors, (52), 4 states have call predecessors, (52), 8 states have return successors, (52), 10 states have call predecessors, (52), 7 states have call successors, (52) [2022-12-13 18:35:27,673 INFO L276 IsEmpty]: Start isEmpty. Operand 28366 states and 35481 transitions. [2022-12-13 18:35:27,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-12-13 18:35:27,678 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:35:27,678 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 18:35:27,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-12-13 18:35:27,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable49 [2022-12-13 18:35:27,880 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:35:27,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:35:27,881 INFO L85 PathProgramCache]: Analyzing trace with hash -223320192, now seen corresponding path program 1 times [2022-12-13 18:35:27,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:35:27,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518729508] [2022-12-13 18:35:27,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:35:27,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:35:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:35:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:35:28,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 18:35:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 18:35:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 18:35:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 18:35:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 18:35:28,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 18:35:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 18:35:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 18:35:28,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 18:35:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 18:35:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 18:35:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 18:35:28,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 18:35:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-12-13 18:35:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-12-13 18:35:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-12-13 18:35:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-12-13 18:35:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-12-13 18:35:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-12-13 18:35:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-12-13 18:35:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,167 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-12-13 18:35:28,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:35:28,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518729508] [2022-12-13 18:35:28,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518729508] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:35:28,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193714461] [2022-12-13 18:35:28,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:35:28,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:35:28,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:35:28,168 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:35:28,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-13 18:35:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:28,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 18:35:28,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:35:28,896 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 130 proven. 10 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-13 18:35:28,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:35:29,138 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-12-13 18:35:29,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193714461] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:35:29,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:35:29,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2022-12-13 18:35:29,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841937292] [2022-12-13 18:35:29,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:35:29,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 18:35:29,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:35:29,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 18:35:29,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-12-13 18:35:29,140 INFO L87 Difference]: Start difference. First operand 28366 states and 35481 transitions. Second operand has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 7 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (45), 7 states have call predecessors, (45), 7 states have call successors, (45) [2022-12-13 18:35:43,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:35:43,785 INFO L93 Difference]: Finished difference Result 54878 states and 70210 transitions. [2022-12-13 18:35:43,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 18:35:43,787 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 7 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (45), 7 states have call predecessors, (45), 7 states have call successors, (45) Word has length 220 [2022-12-13 18:35:43,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:35:43,842 INFO L225 Difference]: With dead ends: 54878 [2022-12-13 18:35:43,842 INFO L226 Difference]: Without dead ends: 29534 [2022-12-13 18:35:43,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 477 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2022-12-13 18:35:43,867 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1749 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 753 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1750 SdHoareTripleChecker+Valid, 1429 SdHoareTripleChecker+Invalid, 1568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 753 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 18:35:43,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1750 Valid, 1429 Invalid, 1568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [753 Valid, 815 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 18:35:43,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29534 states. [2022-12-13 18:35:54,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29534 to 25259. [2022-12-13 18:35:54,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25259 states, 18979 states have (on average 1.2551767743295221) internal successors, (23822), 19163 states have internal predecessors, (23822), 3875 states have call successors, (3875), 2404 states have call predecessors, (3875), 2404 states have return successors, (3875), 3691 states have call predecessors, (3875), 3875 states have call successors, (3875) [2022-12-13 18:35:54,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25259 states to 25259 states and 31572 transitions. [2022-12-13 18:35:54,613 INFO L78 Accepts]: Start accepts. Automaton has 25259 states and 31572 transitions. Word has length 220 [2022-12-13 18:35:54,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:35:54,613 INFO L495 AbstractCegarLoop]: Abstraction has 25259 states and 31572 transitions. [2022-12-13 18:35:54,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 21.083333333333332) internal successors, (253), 12 states have internal predecessors, (253), 7 states have call successors, (46), 5 states have call predecessors, (46), 5 states have return successors, (45), 7 states have call predecessors, (45), 7 states have call successors, (45) [2022-12-13 18:35:54,614 INFO L276 IsEmpty]: Start isEmpty. Operand 25259 states and 31572 transitions. [2022-12-13 18:35:54,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-12-13 18:35:54,618 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:35:54,619 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 18:35:54,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-12-13 18:35:54,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:35:54,820 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:35:54,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:35:54,821 INFO L85 PathProgramCache]: Analyzing trace with hash 2028897719, now seen corresponding path program 1 times [2022-12-13 18:35:54,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:35:54,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536488400] [2022-12-13 18:35:54,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:35:54,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:35:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:55,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:35:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:55,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:35:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:55,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 18:35:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:55,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 18:35:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:55,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 18:35:55,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:55,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 18:35:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:55,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 18:35:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:55,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 18:35:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:55,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 18:35:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:55,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 18:35:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:55,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 18:35:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:55,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 18:35:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:55,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 18:35:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:55,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-12-13 18:35:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:55,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 18:35:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:55,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-12-13 18:35:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:55,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-12-13 18:35:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:55,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-12-13 18:35:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:55,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-12-13 18:35:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:55,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-12-13 18:35:55,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:55,149 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 18:35:55,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:35:55,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536488400] [2022-12-13 18:35:55,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536488400] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:35:55,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388632321] [2022-12-13 18:35:55,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:35:55,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:35:55,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:35:55,150 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:35:55,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-13 18:35:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:35:55,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 18:35:55,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:35:55,609 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 18:35:55,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:35:55,883 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 18:35:55,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388632321] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:35:55,884 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:35:55,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 20 [2022-12-13 18:35:55,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890947531] [2022-12-13 18:35:55,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:35:55,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-13 18:35:55,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:35:55,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-13 18:35:55,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=284, Unknown=0, NotChecked=0, Total=380 [2022-12-13 18:35:55,885 INFO L87 Difference]: Start difference. First operand 25259 states and 31572 transitions. Second operand has 20 states, 20 states have (on average 14.2) internal successors, (284), 20 states have internal predecessors, (284), 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 18:36:14,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:36:14,431 INFO L93 Difference]: Finished difference Result 53054 states and 68181 transitions. [2022-12-13 18:36:14,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-12-13 18:36:14,433 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 14.2) internal successors, (284), 20 states have internal predecessors, (284), 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 219 [2022-12-13 18:36:14,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:36:14,492 INFO L225 Difference]: With dead ends: 53054 [2022-12-13 18:36:14,492 INFO L226 Difference]: Without dead ends: 30351 [2022-12-13 18:36:14,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 533 GetRequests, 475 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1014 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=730, Invalid=2810, Unknown=0, NotChecked=0, Total=3540 [2022-12-13 18:36:14,519 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 1733 mSDsluCounter, 4382 mSDsCounter, 0 mSdLazyCounter, 4042 mSolverCounterSat, 874 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1733 SdHoareTripleChecker+Valid, 5231 SdHoareTripleChecker+Invalid, 4916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 874 IncrementalHoareTripleChecker+Valid, 4042 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-12-13 18:36:14,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1733 Valid, 5231 Invalid, 4916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [874 Valid, 4042 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-12-13 18:36:14,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30351 states. [2022-12-13 18:36:25,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30351 to 24509. [2022-12-13 18:36:25,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24509 states, 18394 states have (on average 1.2569859736870719) internal successors, (23121), 18570 states have internal predecessors, (23121), 3781 states have call successors, (3781), 2333 states have call predecessors, (3781), 2333 states have return successors, (3781), 3605 states have call predecessors, (3781), 3781 states have call successors, (3781) [2022-12-13 18:36:25,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24509 states to 24509 states and 30683 transitions. [2022-12-13 18:36:25,075 INFO L78 Accepts]: Start accepts. Automaton has 24509 states and 30683 transitions. Word has length 219 [2022-12-13 18:36:25,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:36:25,075 INFO L495 AbstractCegarLoop]: Abstraction has 24509 states and 30683 transitions. [2022-12-13 18:36:25,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 14.2) internal successors, (284), 20 states have internal predecessors, (284), 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 18:36:25,075 INFO L276 IsEmpty]: Start isEmpty. Operand 24509 states and 30683 transitions. [2022-12-13 18:36:25,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-12-13 18:36:25,079 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:36:25,080 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] [2022-12-13 18:36:25,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-12-13 18:36:25,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:36:25,281 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:36:25,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:36:25,282 INFO L85 PathProgramCache]: Analyzing trace with hash -368070905, now seen corresponding path program 1 times [2022-12-13 18:36:25,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:36:25,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895517005] [2022-12-13 18:36:25,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:36:25,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:36:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:25,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:36:25,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:25,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:36:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:25,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 18:36:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:25,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 18:36:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:25,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 18:36:25,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:25,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 18:36:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:25,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 18:36:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:25,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 18:36:25,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:25,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 18:36:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:25,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 18:36:25,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:25,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 18:36:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:25,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 18:36:25,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:25,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 18:36:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:25,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-12-13 18:36:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:25,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-12-13 18:36:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:25,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-12-13 18:36:25,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:25,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-12-13 18:36:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:25,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-12-13 18:36:25,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:25,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-12-13 18:36:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:25,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-12-13 18:36:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:25,616 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 18:36:25,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:36:25,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895517005] [2022-12-13 18:36:25,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895517005] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:36:25,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823488088] [2022-12-13 18:36:25,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:36:25,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:36:25,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:36:25,617 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:36:25,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-13 18:36:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:25,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 893 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 18:36:25,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:36:25,940 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 18:36:25,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:36:26,186 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 18:36:26,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823488088] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:36:26,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:36:26,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 17 [2022-12-13 18:36:26,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930798331] [2022-12-13 18:36:26,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:36:26,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-13 18:36:26,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:36:26,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-13 18:36:26,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-12-13 18:36:26,188 INFO L87 Difference]: Start difference. First operand 24509 states and 30683 transitions. Second operand has 17 states, 17 states have (on average 14.176470588235293) internal successors, (241), 17 states have internal predecessors, (241), 7 states have call successors, (42), 6 states have call predecessors, (42), 5 states have return successors, (41), 6 states have call predecessors, (41), 6 states have call successors, (41) [2022-12-13 18:36:45,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:36:45,313 INFO L93 Difference]: Finished difference Result 57916 states and 74473 transitions. [2022-12-13 18:36:45,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 18:36:45,315 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 14.176470588235293) internal successors, (241), 17 states have internal predecessors, (241), 7 states have call successors, (42), 6 states have call predecessors, (42), 5 states have return successors, (41), 6 states have call predecessors, (41), 6 states have call successors, (41) Word has length 220 [2022-12-13 18:36:45,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:36:45,383 INFO L225 Difference]: With dead ends: 57916 [2022-12-13 18:36:45,383 INFO L226 Difference]: Without dead ends: 35874 [2022-12-13 18:36:45,407 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 476 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=242, Invalid=814, Unknown=0, NotChecked=0, Total=1056 [2022-12-13 18:36:45,407 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 1740 mSDsluCounter, 3320 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 930 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1740 SdHoareTripleChecker+Valid, 3855 SdHoareTripleChecker+Invalid, 2822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 930 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 18:36:45,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1740 Valid, 3855 Invalid, 2822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [930 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 18:36:45,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35874 states. [2022-12-13 18:36:57,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35874 to 28875. [2022-12-13 18:36:57,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28875 states, 21635 states have (on average 1.2581003004391034) internal successors, (27219), 21844 states have internal predecessors, (27219), 4490 states have call successors, (4490), 2749 states have call predecessors, (4490), 2749 states have return successors, (4490), 4281 states have call predecessors, (4490), 4490 states have call successors, (4490) [2022-12-13 18:36:57,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28875 states to 28875 states and 36199 transitions. [2022-12-13 18:36:57,920 INFO L78 Accepts]: Start accepts. Automaton has 28875 states and 36199 transitions. Word has length 220 [2022-12-13 18:36:57,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:36:57,920 INFO L495 AbstractCegarLoop]: Abstraction has 28875 states and 36199 transitions. [2022-12-13 18:36:57,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 14.176470588235293) internal successors, (241), 17 states have internal predecessors, (241), 7 states have call successors, (42), 6 states have call predecessors, (42), 5 states have return successors, (41), 6 states have call predecessors, (41), 6 states have call successors, (41) [2022-12-13 18:36:57,920 INFO L276 IsEmpty]: Start isEmpty. Operand 28875 states and 36199 transitions. [2022-12-13 18:36:57,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-12-13 18:36:57,925 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:36:57,925 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:36:57,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-12-13 18:36:58,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2022-12-13 18:36:58,127 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:36:58,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:36:58,128 INFO L85 PathProgramCache]: Analyzing trace with hash -486550967, now seen corresponding path program 1 times [2022-12-13 18:36:58,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:36:58,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99224850] [2022-12-13 18:36:58,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:36:58,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:36:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:36:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:36:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 18:36:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 18:36:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 18:36:58,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 18:36:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 18:36:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 18:36:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 18:36:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 18:36:58,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 18:36:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 18:36:58,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 18:36:58,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-12-13 18:36:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-12-13 18:36:58,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 18:36:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-12-13 18:36:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-12-13 18:36:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-12-13 18:36:58,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-12-13 18:36:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-12-13 18:36:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,454 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 19 proven. 24 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-12-13 18:36:58,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:36:58,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99224850] [2022-12-13 18:36:58,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99224850] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:36:58,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7285790] [2022-12-13 18:36:58,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:36:58,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:36:58,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:36:58,455 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:36:58,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-13 18:36:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:36:58,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-13 18:36:58,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:36:59,555 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 78 proven. 53 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 18:36:59,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:36:59,846 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 19 proven. 24 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-12-13 18:36:59,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7285790] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:36:59,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:36:59,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 12] total 28 [2022-12-13 18:36:59,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655542656] [2022-12-13 18:36:59,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:36:59,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 18:36:59,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:36:59,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 18:36:59,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2022-12-13 18:36:59,847 INFO L87 Difference]: Start difference. First operand 28875 states and 36199 transitions. Second operand has 28 states, 28 states have (on average 10.392857142857142) internal successors, (291), 26 states have internal predecessors, (291), 9 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) [2022-12-13 18:37:29,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:37:29,793 INFO L93 Difference]: Finished difference Result 69229 states and 89327 transitions. [2022-12-13 18:37:29,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-13 18:37:29,794 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.392857142857142) internal successors, (291), 26 states have internal predecessors, (291), 9 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) Word has length 225 [2022-12-13 18:37:29,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:37:29,874 INFO L225 Difference]: With dead ends: 69229 [2022-12-13 18:37:29,875 INFO L226 Difference]: Without dead ends: 42362 [2022-12-13 18:37:29,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 556 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1556 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=799, Invalid=5053, Unknown=0, NotChecked=0, Total=5852 [2022-12-13 18:37:29,906 INFO L413 NwaCegarLoop]: 578 mSDtfsCounter, 2484 mSDsluCounter, 6274 mSDsCounter, 0 mSdLazyCounter, 6081 mSolverCounterSat, 1269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2484 SdHoareTripleChecker+Valid, 6852 SdHoareTripleChecker+Invalid, 7350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1269 IncrementalHoareTripleChecker+Valid, 6081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-12-13 18:37:29,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2484 Valid, 6852 Invalid, 7350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1269 Valid, 6081 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-12-13 18:37:29,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42362 states. [2022-12-13 18:37:44,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42362 to 30330. [2022-12-13 18:37:44,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30330 states, 22764 states have (on average 1.2606747496046389) internal successors, (28698), 22977 states have internal predecessors, (28698), 4683 states have call successors, (4683), 2882 states have call predecessors, (4683), 2882 states have return successors, (4683), 4470 states have call predecessors, (4683), 4683 states have call successors, (4683) [2022-12-13 18:37:44,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30330 states to 30330 states and 38064 transitions. [2022-12-13 18:37:44,461 INFO L78 Accepts]: Start accepts. Automaton has 30330 states and 38064 transitions. Word has length 225 [2022-12-13 18:37:44,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:37:44,461 INFO L495 AbstractCegarLoop]: Abstraction has 30330 states and 38064 transitions. [2022-12-13 18:37:44,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.392857142857142) internal successors, (291), 26 states have internal predecessors, (291), 9 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) [2022-12-13 18:37:44,462 INFO L276 IsEmpty]: Start isEmpty. Operand 30330 states and 38064 transitions. [2022-12-13 18:37:44,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-12-13 18:37:44,467 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:37:44,467 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, 1, 1, 1, 1, 1] [2022-12-13 18:37:44,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-12-13 18:37:44,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:37:44,668 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:37:44,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:37:44,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1752259723, now seen corresponding path program 1 times [2022-12-13 18:37:44,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:37:44,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702318236] [2022-12-13 18:37:44,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:37:44,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:37:44,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:44,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:37:44,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:44,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:37:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:44,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 18:37:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:44,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 18:37:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:44,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 18:37:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:44,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 18:37:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:44,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 18:37:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:44,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 18:37:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:44,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 18:37:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:44,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 18:37:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:44,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 18:37:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:44,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 18:37:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:44,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 18:37:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:44,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 18:37:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:44,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-12-13 18:37:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:44,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 18:37:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:44,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-12-13 18:37:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:44,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-12-13 18:37:44,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:44,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-12-13 18:37:44,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:44,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-12-13 18:37:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:44,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-12-13 18:37:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:44,976 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 18:37:44,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:37:44,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702318236] [2022-12-13 18:37:44,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702318236] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:37:44,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074775900] [2022-12-13 18:37:44,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:37:44,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:37:44,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:37:44,977 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:37:44,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-13 18:37:45,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:37:45,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 911 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 18:37:45,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:37:45,334 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 18:37:45,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:37:45,516 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 18:37:45,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074775900] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:37:45,517 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:37:45,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 9] total 22 [2022-12-13 18:37:45,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528161566] [2022-12-13 18:37:45,517 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:37:45,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 18:37:45,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:37:45,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 18:37:45,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2022-12-13 18:37:45,519 INFO L87 Difference]: Start difference. First operand 30330 states and 38064 transitions. Second operand has 22 states, 22 states have (on average 13.727272727272727) internal successors, (302), 22 states have internal predecessors, (302), 10 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 10 states have call successors, (43) [2022-12-13 18:38:14,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:38:14,005 INFO L93 Difference]: Finished difference Result 74159 states and 96862 transitions. [2022-12-13 18:38:14,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-12-13 18:38:14,007 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 13.727272727272727) internal successors, (302), 22 states have internal predecessors, (302), 10 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 10 states have call successors, (43) Word has length 227 [2022-12-13 18:38:14,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:38:14,121 INFO L225 Difference]: With dead ends: 74159 [2022-12-13 18:38:14,122 INFO L226 Difference]: Without dead ends: 45414 [2022-12-13 18:38:14,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 540 GetRequests, 487 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 723 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=564, Invalid=2406, Unknown=0, NotChecked=0, Total=2970 [2022-12-13 18:38:14,164 INFO L413 NwaCegarLoop]: 589 mSDtfsCounter, 2190 mSDsluCounter, 3911 mSDsCounter, 0 mSdLazyCounter, 2648 mSolverCounterSat, 1157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2192 SdHoareTripleChecker+Valid, 4500 SdHoareTripleChecker+Invalid, 3805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1157 IncrementalHoareTripleChecker+Valid, 2648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 18:38:14,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2192 Valid, 4500 Invalid, 3805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1157 Valid, 2648 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 18:38:14,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45414 states. [2022-12-13 18:38:30,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45414 to 30480. [2022-12-13 18:38:30,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30480 states, 22860 states have (on average 1.2598862642169728) internal successors, (28801), 23127 states have internal predecessors, (28801), 4710 states have call successors, (4710), 2882 states have call predecessors, (4710), 2909 states have return successors, (4737), 4470 states have call predecessors, (4737), 4710 states have call successors, (4737) [2022-12-13 18:38:30,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30480 states to 30480 states and 38248 transitions. [2022-12-13 18:38:30,875 INFO L78 Accepts]: Start accepts. Automaton has 30480 states and 38248 transitions. Word has length 227 [2022-12-13 18:38:30,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:38:30,876 INFO L495 AbstractCegarLoop]: Abstraction has 30480 states and 38248 transitions. [2022-12-13 18:38:30,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 13.727272727272727) internal successors, (302), 22 states have internal predecessors, (302), 10 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 10 states have call successors, (43) [2022-12-13 18:38:30,876 INFO L276 IsEmpty]: Start isEmpty. Operand 30480 states and 38248 transitions. [2022-12-13 18:38:30,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-12-13 18:38:30,882 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:38:30,882 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, 1, 1, 1, 1, 1] [2022-12-13 18:38:30,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-12-13 18:38:31,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:38:31,082 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:38:31,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:38:31,083 INFO L85 PathProgramCache]: Analyzing trace with hash 156198067, now seen corresponding path program 1 times [2022-12-13 18:38:31,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:38:31,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658874552] [2022-12-13 18:38:31,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:38:31,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:38:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:38:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 18:38:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 18:38:31,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 18:38:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 18:38:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 18:38:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 18:38:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 18:38:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 18:38:31,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 18:38:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 18:38:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 18:38:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 18:38:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 18:38:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-12-13 18:38:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 18:38:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-12-13 18:38:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-12-13 18:38:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-12-13 18:38:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-12-13 18:38:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-12-13 18:38:31,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,454 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 18:38:31,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:38:31,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658874552] [2022-12-13 18:38:31,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658874552] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:38:31,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627915158] [2022-12-13 18:38:31,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:38:31,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:38:31,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:38:31,456 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:38:31,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-13 18:38:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:38:31,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 910 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-13 18:38:31,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:38:32,626 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 18:38:32,627 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:38:32,897 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 18:38:32,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627915158] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:38:32,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:38:32,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 12] total 28 [2022-12-13 18:38:32,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735598676] [2022-12-13 18:38:32,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:38:32,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-12-13 18:38:32,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:38:32,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-12-13 18:38:32,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=669, Unknown=0, NotChecked=0, Total=756 [2022-12-13 18:38:32,900 INFO L87 Difference]: Start difference. First operand 30480 states and 38248 transitions. Second operand has 28 states, 28 states have (on average 10.464285714285714) internal successors, (293), 26 states have internal predecessors, (293), 9 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) [2022-12-13 18:39:06,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:39:06,893 INFO L93 Difference]: Finished difference Result 74008 states and 95585 transitions. [2022-12-13 18:39:06,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-13 18:39:06,894 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.464285714285714) internal successors, (293), 26 states have internal predecessors, (293), 9 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) Word has length 227 [2022-12-13 18:39:06,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:39:06,983 INFO L225 Difference]: With dead ends: 74008 [2022-12-13 18:39:06,983 INFO L226 Difference]: Without dead ends: 45264 [2022-12-13 18:39:07,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1571 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=789, Invalid=5063, Unknown=0, NotChecked=0, Total=5852 [2022-12-13 18:39:07,015 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 1759 mSDsluCounter, 6037 mSDsCounter, 0 mSdLazyCounter, 5457 mSolverCounterSat, 743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 6531 SdHoareTripleChecker+Invalid, 6200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 743 IncrementalHoareTripleChecker+Valid, 5457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-12-13 18:39:07,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1759 Valid, 6531 Invalid, 6200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [743 Valid, 5457 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-12-13 18:39:07,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45264 states. [2022-12-13 18:39:24,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45264 to 32035. [2022-12-13 18:39:24,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32035 states, 24031 states have (on average 1.2606633098913902) internal successors, (30295), 24310 states have internal predecessors, (30295), 4945 states have call successors, (4945), 3034 states have call predecessors, (4945), 3058 states have return successors, (4969), 4690 states have call predecessors, (4969), 4945 states have call successors, (4969) [2022-12-13 18:39:24,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32035 states to 32035 states and 40209 transitions. [2022-12-13 18:39:24,078 INFO L78 Accepts]: Start accepts. Automaton has 32035 states and 40209 transitions. Word has length 227 [2022-12-13 18:39:24,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:39:24,079 INFO L495 AbstractCegarLoop]: Abstraction has 32035 states and 40209 transitions. [2022-12-13 18:39:24,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.464285714285714) internal successors, (293), 26 states have internal predecessors, (293), 9 states have call successors, (44), 6 states have call predecessors, (44), 9 states have return successors, (44), 11 states have call predecessors, (44), 9 states have call successors, (44) [2022-12-13 18:39:24,079 INFO L276 IsEmpty]: Start isEmpty. Operand 32035 states and 40209 transitions. [2022-12-13 18:39:24,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-12-13 18:39:24,092 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:39:24,092 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 18:39:24,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-12-13 18:39:24,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-12-13 18:39:24,293 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:39:24,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:39:24,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1675320614, now seen corresponding path program 1 times [2022-12-13 18:39:24,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:39:24,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910260331] [2022-12-13 18:39:24,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:39:24,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:39:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:39:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:39:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 18:39:24,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 18:39:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 18:39:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:39:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 18:39:24,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 18:39:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 18:39:24,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 18:39:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 18:39:24,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 18:39:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 18:39:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-12-13 18:39:24,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-12-13 18:39:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-12-13 18:39:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-12-13 18:39:24,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-12-13 18:39:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-12-13 18:39:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-12-13 18:39:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-12-13 18:39:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2022-12-13 18:39:24,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2022-12-13 18:39:24,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-12-13 18:39:24,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-12-13 18:39:24,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:24,546 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 18:39:24,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:39:24,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910260331] [2022-12-13 18:39:24,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910260331] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 18:39:24,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 18:39:24,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 18:39:24,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416482419] [2022-12-13 18:39:24,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 18:39:24,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 18:39:24,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:39:24,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 18:39:24,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 18:39:24,547 INFO L87 Difference]: Start difference. First operand 32035 states and 40209 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 18:39:40,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 18:39:40,203 INFO L93 Difference]: Finished difference Result 61681 states and 77871 transitions. [2022-12-13 18:39:40,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 18:39:40,204 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 18:39:40,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 18:39:40,263 INFO L225 Difference]: With dead ends: 61681 [2022-12-13 18:39:40,264 INFO L226 Difference]: Without dead ends: 31611 [2022-12-13 18:39:40,295 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 18:39:40,295 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 7 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 751 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 18:39:40,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 751 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 18:39:40,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31611 states. [2022-12-13 18:39:56,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31611 to 31591. [2022-12-13 18:39:56,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31591 states, 23807 states have (on average 1.2393833746377116) internal successors, (29506), 24080 states have internal predecessors, (29506), 4729 states have call successors, (4729), 3032 states have call predecessors, (4729), 3054 states have return successors, (4751), 4478 states have call predecessors, (4751), 4729 states have call successors, (4751) [2022-12-13 18:39:56,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31591 states to 31591 states and 38986 transitions. [2022-12-13 18:39:56,312 INFO L78 Accepts]: Start accepts. Automaton has 31591 states and 38986 transitions. Word has length 266 [2022-12-13 18:39:56,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 18:39:56,312 INFO L495 AbstractCegarLoop]: Abstraction has 31591 states and 38986 transitions. [2022-12-13 18:39:56,312 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 18:39:56,312 INFO L276 IsEmpty]: Start isEmpty. Operand 31591 states and 38986 transitions. [2022-12-13 18:39:56,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-12-13 18:39:56,325 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 18:39:56,325 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:39:56,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-12-13 18:39:56,326 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 18:39:56,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 18:39:56,326 INFO L85 PathProgramCache]: Analyzing trace with hash 90414811, now seen corresponding path program 1 times [2022-12-13 18:39:56,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 18:39:56,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586740760] [2022-12-13 18:39:56,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:39:56,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 18:39:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-12-13 18:39:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 18:39:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 18:39:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 18:39:56,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 18:39:56,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 18:39:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 18:39:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 18:39:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 18:39:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 18:39:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 18:39:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 18:39:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-12-13 18:39:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 18:39:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 18:39:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 18:39:56,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-12-13 18:39:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-12-13 18:39:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-12-13 18:39:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-12-13 18:39:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2022-12-13 18:39:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2022-12-13 18:39:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2022-12-13 18:39:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2022-12-13 18:39:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-12-13 18:39:56,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:56,883 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 56 proven. 52 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2022-12-13 18:39:56,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 18:39:56,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586740760] [2022-12-13 18:39:56,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586740760] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 18:39:56,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592988560] [2022-12-13 18:39:56,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 18:39:56,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 18:39:56,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 18:39:56,885 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 18:39:56,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d171546e-0fda-407a-9b6a-7bca18b397d4/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-13 18:39:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 18:39:57,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 1081 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 18:39:57,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 18:39:57,241 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 210 proven. 65 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-12-13 18:39:57,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 18:39:57,396 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 84 proven. 26 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2022-12-13 18:39:57,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592988560] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 18:39:57,397 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 18:39:57,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 19 [2022-12-13 18:39:57,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955907014] [2022-12-13 18:39:57,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 18:39:57,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-13 18:39:57,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 18:39:57,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-13 18:39:57,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-12-13 18:39:57,399 INFO L87 Difference]: Start difference. First operand 31591 states and 38986 transitions. Second operand has 19 states, 19 states have (on average 16.789473684210527) internal successors, (319), 18 states have internal predecessors, (319), 8 states have call successors, (68), 4 states have call predecessors, (68), 6 states have return successors, (68), 9 states have call predecessors, (68), 8 states have call successors, (68)