./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/zonotope_3.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/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_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_3.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/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_22808177-829d-4f81-89cf-2184a3769a06/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 f57f8b833105028fdf95b78a3cf338388755f00064f1be1e7a158d1da7dbd5a2 --- 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 22:37:12,548 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:37:12,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:37:12,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:37:12,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:37:12,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:37:12,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:37:12,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:37:12,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:37:12,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:37:12,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:37:12,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:37:12,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:37:12,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:37:12,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:37:12,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:37:12,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:37:12,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:37:12,583 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:37:12,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:37:12,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:37:12,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:37:12,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:37:12,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:37:12,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:37:12,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:37:12,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:37:12,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:37:12,594 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:37:12,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:37:12,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:37:12,596 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:37:12,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:37:12,598 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:37:12,599 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:37:12,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:37:12,600 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:37:12,600 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:37:12,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:37:12,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:37:12,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:37:12,602 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 22:37:12,624 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:37:12,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:37:12,625 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:37:12,625 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:37:12,625 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:37:12,625 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:37:12,626 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:37:12,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:37:12,626 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:37:12,627 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:37:12,627 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:37:12,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:37:12,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:37:12,627 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:37:12,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 22:37:12,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:37:12,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 22:37:12,628 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:37:12,628 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 22:37:12,628 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:37:12,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 22:37:12,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:37:12,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:37:12,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:37:12,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:37:12,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:37:12,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:37:12,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 22:37:12,630 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:37:12,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:37:12,631 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:37:12,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 22:37:12,631 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:37:12,631 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:37:12,631 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:37:12,631 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_22808177-829d-4f81-89cf-2184a3769a06/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f57f8b833105028fdf95b78a3cf338388755f00064f1be1e7a158d1da7dbd5a2 [2022-12-13 22:37:12,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:37:12,839 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:37:12,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:37:12,841 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:37:12,842 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:37:12,843 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/float-benchs/zonotope_3.c.p+cfa-reducer.c [2022-12-13 22:37:15,420 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:37:15,580 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:37:15,581 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/sv-benchmarks/c/float-benchs/zonotope_3.c.p+cfa-reducer.c [2022-12-13 22:37:15,586 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/data/ff8aa6c4d/2020b6818c444de19ae6737ea4fbf99a/FLAG17aff5221 [2022-12-13 22:37:15,981 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/data/ff8aa6c4d/2020b6818c444de19ae6737ea4fbf99a [2022-12-13 22:37:15,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:37:15,984 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:37:15,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:37:15,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:37:15,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:37:15,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:37:15" (1/1) ... [2022-12-13 22:37:15,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7764c4fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:37:15, skipping insertion in model container [2022-12-13 22:37:15,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:37:15" (1/1) ... [2022-12-13 22:37:15,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:37:16,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:37:16,134 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_22808177-829d-4f81-89cf-2184a3769a06/sv-benchmarks/c/float-benchs/zonotope_3.c.p+cfa-reducer.c[2717,2730] [2022-12-13 22:37:16,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:37:16,145 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:37:16,160 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_22808177-829d-4f81-89cf-2184a3769a06/sv-benchmarks/c/float-benchs/zonotope_3.c.p+cfa-reducer.c[2717,2730] [2022-12-13 22:37:16,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:37:16,170 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:37:16,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:37:16 WrapperNode [2022-12-13 22:37:16,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:37:16,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:37:16,171 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:37:16,171 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:37:16,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:37:16" (1/1) ... [2022-12-13 22:37:16,182 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:37:16" (1/1) ... [2022-12-13 22:37:16,195 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 115 [2022-12-13 22:37:16,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:37:16,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:37:16,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:37:16,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:37:16,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:37:16" (1/1) ... [2022-12-13 22:37:16,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:37:16" (1/1) ... [2022-12-13 22:37:16,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:37:16" (1/1) ... [2022-12-13 22:37:16,202 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:37:16" (1/1) ... [2022-12-13 22:37:16,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:37:16" (1/1) ... [2022-12-13 22:37:16,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:37:16" (1/1) ... [2022-12-13 22:37:16,207 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:37:16" (1/1) ... [2022-12-13 22:37:16,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:37:16" (1/1) ... [2022-12-13 22:37:16,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:37:16,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:37:16,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:37:16,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:37:16,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:37:16" (1/1) ... [2022-12-13 22:37:16,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:37:16,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:37:16,231 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:37:16,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:37:16,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:37:16,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 22:37:16,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:37:16,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:37:16,317 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:37:16,319 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:37:16,415 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:37:16,420 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:37:16,420 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-13 22:37:16,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:37:16 BoogieIcfgContainer [2022-12-13 22:37:16,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:37:16,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:37:16,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:37:16,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:37:16,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:37:15" (1/3) ... [2022-12-13 22:37:16,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@447150bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:37:16, skipping insertion in model container [2022-12-13 22:37:16,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:37:16" (2/3) ... [2022-12-13 22:37:16,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@447150bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:37:16, skipping insertion in model container [2022-12-13 22:37:16,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:37:16" (3/3) ... [2022-12-13 22:37:16,428 INFO L112 eAbstractionObserver]: Analyzing ICFG zonotope_3.c.p+cfa-reducer.c [2022-12-13 22:37:16,442 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:37:16,442 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 22:37:16,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:37:16,481 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;@b22b832, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:37:16,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 22:37:16,484 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:16,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 22:37:16,489 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:37:16,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:37:16,490 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:37:16,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:37:16,494 INFO L85 PathProgramCache]: Analyzing trace with hash 739680105, now seen corresponding path program 1 times [2022-12-13 22:37:16,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:37:16,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874874528] [2022-12-13 22:37:16,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:37:16,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:37:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:37:16,637 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 22:37:16,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:37:16,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874874528] [2022-12-13 22:37:16,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874874528] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:37:16,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:37:16,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:37:16,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32841713] [2022-12-13 22:37:16,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:37:16,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:37:16,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:37:16,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:37:16,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:37:16,667 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:16,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:37:16,691 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2022-12-13 22:37:16,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:37:16,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-13 22:37:16,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:37:16,698 INFO L225 Difference]: With dead ends: 35 [2022-12-13 22:37:16,698 INFO L226 Difference]: Without dead ends: 19 [2022-12-13 22:37:16,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:37:16,703 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:37:16,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 38 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:37:16,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-12-13 22:37:16,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15. [2022-12-13 22:37:16,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:16,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2022-12-13 22:37:16,728 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 8 [2022-12-13 22:37:16,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:37:16,728 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2022-12-13 22:37:16,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:16,728 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2022-12-13 22:37:16,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 22:37:16,729 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:37:16,729 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:37:16,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 22:37:16,729 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:37:16,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:37:16,730 INFO L85 PathProgramCache]: Analyzing trace with hash 573752309, now seen corresponding path program 1 times [2022-12-13 22:37:16,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:37:16,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919052506] [2022-12-13 22:37:16,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:37:16,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:37:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:37:16,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:37:16,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:37:16,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919052506] [2022-12-13 22:37:16,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919052506] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:37:16,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:37:16,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:37:16,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456497535] [2022-12-13 22:37:16,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:37:16,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 22:37:16,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:37:16,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 22:37:16,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:37:16,772 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:16,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:37:16,783 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2022-12-13 22:37:16,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 22:37:16,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-13 22:37:16,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:37:16,784 INFO L225 Difference]: With dead ends: 28 [2022-12-13 22:37:16,784 INFO L226 Difference]: Without dead ends: 14 [2022-12-13 22:37:16,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 22:37:16,785 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:37:16,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:37:16,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-13 22:37:16,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-12-13 22:37:16,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:16,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2022-12-13 22:37:16,788 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2022-12-13 22:37:16,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:37:16,788 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2022-12-13 22:37:16,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:16,788 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2022-12-13 22:37:16,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 22:37:16,789 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:37:16,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:37:16,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 22:37:16,789 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:37:16,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:37:16,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1667531312, now seen corresponding path program 1 times [2022-12-13 22:37:16,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:37:16,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938958504] [2022-12-13 22:37:16,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:37:16,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:37:16,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:37:16,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:37:16,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:37:16,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938958504] [2022-12-13 22:37:16,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938958504] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:37:16,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701801397] [2022-12-13 22:37:16,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:37:16,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:37:16,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:37:16,844 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:37:16,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 22:37:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:37:16,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 22:37:16,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:37:16,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:37:16,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:37:16,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:37:16,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701801397] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:37:16,990 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:37:16,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 22:37:16,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601737568] [2022-12-13 22:37:16,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:37:16,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 22:37:16,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:37:16,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 22:37:16,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:37:16,993 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:17,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:37:17,020 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-12-13 22:37:17,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:37:17,020 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-13 22:37:17,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:37:17,021 INFO L225 Difference]: With dead ends: 33 [2022-12-13 22:37:17,021 INFO L226 Difference]: Without dead ends: 26 [2022-12-13 22:37:17,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:37:17,023 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:37:17,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 39 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:37:17,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-13 22:37:17,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-12-13 22:37:17,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:17,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2022-12-13 22:37:17,030 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 12 [2022-12-13 22:37:17,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:37:17,030 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2022-12-13 22:37:17,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:17,031 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2022-12-13 22:37:17,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 22:37:17,031 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:37:17,032 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:37:17,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 22:37:17,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:37:17,233 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:37:17,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:37:17,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1396128379, now seen corresponding path program 2 times [2022-12-13 22:37:17,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:37:17,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250596936] [2022-12-13 22:37:17,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:37:17,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:37:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:37:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-12-13 22:37:17,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:37:17,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250596936] [2022-12-13 22:37:17,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250596936] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:37:17,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241324296] [2022-12-13 22:37:17,402 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:37:17,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:37:17,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:37:17,403 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:37:17,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 22:37:17,450 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 22:37:17,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:37:17,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 22:37:17,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:37:17,475 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-12-13 22:37:17,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:37:17,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241324296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:37:17,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 22:37:17,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-12-13 22:37:17,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077767268] [2022-12-13 22:37:17,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:37:17,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:37:17,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:37:17,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:37:17,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 22:37:17,477 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:17,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:37:17,493 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2022-12-13 22:37:17,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:37:17,494 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-12-13 22:37:17,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:37:17,495 INFO L225 Difference]: With dead ends: 30 [2022-12-13 22:37:17,495 INFO L226 Difference]: Without dead ends: 26 [2022-12-13 22:37:17,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:37:17,496 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 1 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:37:17,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 36 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:37:17,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-13 22:37:17,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-12-13 22:37:17,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2022-12-13 22:37:17,500 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 24 [2022-12-13 22:37:17,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:37:17,500 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2022-12-13 22:37:17,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:17,500 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2022-12-13 22:37:17,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 22:37:17,501 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:37:17,501 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:37:17,505 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 22:37:17,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:37:17,703 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:37:17,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:37:17,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1379117718, now seen corresponding path program 1 times [2022-12-13 22:37:17,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:37:17,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916112057] [2022-12-13 22:37:17,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:37:17,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:37:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:37:17,897 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:37:17,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:37:17,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916112057] [2022-12-13 22:37:17,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916112057] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:37:17,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028865006] [2022-12-13 22:37:17,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:37:17,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:37:17,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:37:17,899 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:37:17,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 22:37:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:37:17,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 22:37:17,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:37:17,998 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:37:17,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:37:18,059 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:37:18,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028865006] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:37:18,060 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:37:18,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-12-13 22:37:18,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318328324] [2022-12-13 22:37:18,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:37:18,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 22:37:18,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:37:18,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 22:37:18,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 22:37:18,062 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:18,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:37:18,099 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2022-12-13 22:37:18,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 22:37:18,100 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-12-13 22:37:18,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:37:18,100 INFO L225 Difference]: With dead ends: 57 [2022-12-13 22:37:18,101 INFO L226 Difference]: Without dead ends: 50 [2022-12-13 22:37:18,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 22:37:18,102 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:37:18,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 46 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:37:18,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-13 22:37:18,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-12-13 22:37:18,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.0408163265306123) internal successors, (51), 49 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:18,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2022-12-13 22:37:18,108 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 24 [2022-12-13 22:37:18,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:37:18,109 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2022-12-13 22:37:18,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:18,109 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2022-12-13 22:37:18,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-12-13 22:37:18,110 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:37:18,110 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:37:18,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 22:37:18,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:37:18,312 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:37:18,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:37:18,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1660556692, now seen corresponding path program 2 times [2022-12-13 22:37:18,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:37:18,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717276371] [2022-12-13 22:37:18,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:37:18,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:37:18,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:37:18,602 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:37:18,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:37:18,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717276371] [2022-12-13 22:37:18,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717276371] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:37:18,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613494722] [2022-12-13 22:37:18,603 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:37:18,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:37:18,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:37:18,604 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:37:18,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 22:37:18,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 22:37:18,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:37:18,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 22:37:18,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:37:18,773 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:37:18,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:37:18,964 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:37:18,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613494722] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:37:18,965 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:37:18,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-12-13 22:37:18,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173643088] [2022-12-13 22:37:18,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:37:18,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 22:37:18,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:37:18,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 22:37:18,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-12-13 22:37:18,967 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:19,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:37:19,043 INFO L93 Difference]: Finished difference Result 105 states and 118 transitions. [2022-12-13 22:37:19,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 22:37:19,044 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-12-13 22:37:19,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:37:19,045 INFO L225 Difference]: With dead ends: 105 [2022-12-13 22:37:19,045 INFO L226 Difference]: Without dead ends: 98 [2022-12-13 22:37:19,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-12-13 22:37:19,046 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:37:19,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 94 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 22:37:19,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-12-13 22:37:19,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-12-13 22:37:19,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.0206185567010309) internal successors, (99), 97 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:19,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 99 transitions. [2022-12-13 22:37:19,053 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 99 transitions. Word has length 48 [2022-12-13 22:37:19,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:37:19,053 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 99 transitions. [2022-12-13 22:37:19,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.8) internal successors, (95), 25 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:19,054 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 99 transitions. [2022-12-13 22:37:19,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-13 22:37:19,055 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:37:19,055 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:37:19,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 22:37:19,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 22:37:19,257 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:37:19,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:37:19,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1914010600, now seen corresponding path program 3 times [2022-12-13 22:37:19,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:37:19,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644856533] [2022-12-13 22:37:19,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:37:19,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:37:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:37:19,802 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:37:19,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:37:19,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644856533] [2022-12-13 22:37:19,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644856533] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:37:19,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942860832] [2022-12-13 22:37:19,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 22:37:19,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:37:19,803 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:37:19,804 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:37:19,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 22:37:19,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 23 check-sat command(s) [2022-12-13 22:37:19,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:37:19,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 22:37:19,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:37:20,065 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:37:20,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:37:20,658 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:37:20,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942860832] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:37:20,658 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:37:20,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-12-13 22:37:20,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016106266] [2022-12-13 22:37:20,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:37:20,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-13 22:37:20,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:37:20,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-13 22:37:20,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 22:37:20,662 INFO L87 Difference]: Start difference. First operand 98 states and 99 transitions. Second operand has 49 states, 49 states have (on average 3.8979591836734695) internal successors, (191), 49 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:20,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:37:20,826 INFO L93 Difference]: Finished difference Result 201 states and 226 transitions. [2022-12-13 22:37:20,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 22:37:20,827 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.8979591836734695) internal successors, (191), 49 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2022-12-13 22:37:20,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:37:20,829 INFO L225 Difference]: With dead ends: 201 [2022-12-13 22:37:20,829 INFO L226 Difference]: Without dead ends: 194 [2022-12-13 22:37:20,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 22:37:20,831 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:37:20,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 134 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 22:37:20,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-12-13 22:37:20,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2022-12-13 22:37:20,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.0103626943005182) internal successors, (195), 193 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:20,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 195 transitions. [2022-12-13 22:37:20,841 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 195 transitions. Word has length 96 [2022-12-13 22:37:20,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:37:20,841 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 195 transitions. [2022-12-13 22:37:20,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.8979591836734695) internal successors, (191), 49 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:20,842 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 195 transitions. [2022-12-13 22:37:20,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-12-13 22:37:20,843 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:37:20,843 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:37:20,850 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 22:37:21,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:37:21,044 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:37:21,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:37:21,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1650204528, now seen corresponding path program 4 times [2022-12-13 22:37:21,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:37:21,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117643731] [2022-12-13 22:37:21,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:37:21,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:37:21,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:37:22,520 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:37:22,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:37:22,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117643731] [2022-12-13 22:37:22,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117643731] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:37:22,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167526014] [2022-12-13 22:37:22,520 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 22:37:22,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:37:22,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:37:22,522 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:37:22,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 22:37:22,752 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 22:37:22,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:37:22,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1644 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-13 22:37:22,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:37:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:37:22,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:37:24,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4186 backedges. 0 proven. 4186 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:37:24,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167526014] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:37:24,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:37:24,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2022-12-13 22:37:24,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117207477] [2022-12-13 22:37:24,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:37:24,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2022-12-13 22:37:24,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:37:24,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2022-12-13 22:37:24,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-12-13 22:37:24,804 INFO L87 Difference]: Start difference. First operand 194 states and 195 transitions. Second operand has 97 states, 97 states have (on average 3.948453608247423) internal successors, (383), 97 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:25,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:37:25,213 INFO L93 Difference]: Finished difference Result 393 states and 442 transitions. [2022-12-13 22:37:25,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-12-13 22:37:25,213 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 3.948453608247423) internal successors, (383), 97 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2022-12-13 22:37:25,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:37:25,215 INFO L225 Difference]: With dead ends: 393 [2022-12-13 22:37:25,215 INFO L226 Difference]: Without dead ends: 386 [2022-12-13 22:37:25,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2022-12-13 22:37:25,217 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 22:37:25,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 294 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 22:37:25,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-12-13 22:37:25,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2022-12-13 22:37:25,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 1.0051948051948052) internal successors, (387), 385 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:25,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 387 transitions. [2022-12-13 22:37:25,231 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 387 transitions. Word has length 192 [2022-12-13 22:37:25,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:37:25,231 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 387 transitions. [2022-12-13 22:37:25,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 3.948453608247423) internal successors, (383), 97 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:25,232 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 387 transitions. [2022-12-13 22:37:25,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2022-12-13 22:37:25,236 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:37:25,236 INFO L195 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:37:25,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-13 22:37:25,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:37:25,438 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:37:25,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:37:25,439 INFO L85 PathProgramCache]: Analyzing trace with hash 215943648, now seen corresponding path program 5 times [2022-12-13 22:37:25,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:37:25,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430862693] [2022-12-13 22:37:25,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:37:25,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:37:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:37:29,936 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:37:29,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:37:29,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430862693] [2022-12-13 22:37:29,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430862693] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:37:29,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897953403] [2022-12-13 22:37:29,936 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 22:37:29,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:37:29,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:37:29,937 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:37:29,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 22:37:30,576 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 95 check-sat command(s) [2022-12-13 22:37:30,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:37:30,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 3276 conjuncts, 96 conjunts are in the unsatisfiable core [2022-12-13 22:37:30,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:37:30,914 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:37:30,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:37:37,710 INFO L134 CoverageAnalysis]: Checked inductivity of 17578 backedges. 0 proven. 17578 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:37:37,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897953403] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:37:37,711 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:37:37,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2022-12-13 22:37:37,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105400598] [2022-12-13 22:37:37,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:37:37,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2022-12-13 22:37:37,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:37:37,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2022-12-13 22:37:37,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2022-12-13 22:37:37,732 INFO L87 Difference]: Start difference. First operand 386 states and 387 transitions. Second operand has 193 states, 193 states have (on average 3.9740932642487046) internal successors, (767), 193 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:38,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:37:38,856 INFO L93 Difference]: Finished difference Result 777 states and 874 transitions. [2022-12-13 22:37:38,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-12-13 22:37:38,856 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 3.9740932642487046) internal successors, (767), 193 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 384 [2022-12-13 22:37:38,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:37:38,861 INFO L225 Difference]: With dead ends: 777 [2022-12-13 22:37:38,861 INFO L226 Difference]: Without dead ends: 770 [2022-12-13 22:37:38,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 863 GetRequests, 672 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2022-12-13 22:37:38,864 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 22:37:38,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 456 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 22:37:38,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-12-13 22:37:38,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 770. [2022-12-13 22:37:38,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 1.0026007802340702) internal successors, (771), 769 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:38,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 771 transitions. [2022-12-13 22:37:38,882 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 771 transitions. Word has length 384 [2022-12-13 22:37:38,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:37:38,882 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 771 transitions. [2022-12-13 22:37:38,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 3.9740932642487046) internal successors, (767), 193 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:37:38,883 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 771 transitions. [2022-12-13 22:37:38,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 769 [2022-12-13 22:37:38,897 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:37:38,897 INFO L195 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:37:38,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 22:37:39,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:37:39,099 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:37:39,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:37:39,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1640946816, now seen corresponding path program 6 times [2022-12-13 22:37:39,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:37:39,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896954288] [2022-12-13 22:37:39,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:37:39,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:37:39,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:37:59,781 INFO L134 CoverageAnalysis]: Checked inductivity of 72010 backedges. 0 proven. 72010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:37:59,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:37:59,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896954288] [2022-12-13 22:37:59,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896954288] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:37:59,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [569111336] [2022-12-13 22:37:59,782 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-13 22:37:59,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:37:59,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:37:59,783 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:37:59,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 22:38:01,876 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 191 check-sat command(s) [2022-12-13 22:38:01,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:38:01,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 6540 conjuncts, 192 conjunts are in the unsatisfiable core [2022-12-13 22:38:01,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:38:02,622 INFO L134 CoverageAnalysis]: Checked inductivity of 72010 backedges. 0 proven. 72010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:38:02,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:38:29,092 INFO L134 CoverageAnalysis]: Checked inductivity of 72010 backedges. 0 proven. 72010 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:38:29,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [569111336] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:38:29,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:38:29,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193, 193] total 385 [2022-12-13 22:38:29,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070892961] [2022-12-13 22:38:29,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:38:29,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 385 states [2022-12-13 22:38:29,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:38:29,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants. [2022-12-13 22:38:29,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2022-12-13 22:38:29,116 INFO L87 Difference]: Start difference. First operand 770 states and 771 transitions. Second operand has 385 states, 385 states have (on average 3.987012987012987) internal successors, (1535), 385 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:38:34,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:38:34,859 INFO L93 Difference]: Finished difference Result 1545 states and 1738 transitions. [2022-12-13 22:38:34,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2022-12-13 22:38:34,860 INFO L78 Accepts]: Start accepts. Automaton has has 385 states, 385 states have (on average 3.987012987012987) internal successors, (1535), 385 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 768 [2022-12-13 22:38:34,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:38:34,863 INFO L225 Difference]: With dead ends: 1545 [2022-12-13 22:38:34,863 INFO L226 Difference]: Without dead ends: 1538 [2022-12-13 22:38:34,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1727 GetRequests, 1344 SyntacticMatches, 0 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 34.6s TimeCoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2022-12-13 22:38:34,869 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 798 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:38:34,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 798 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 22:38:34,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2022-12-13 22:38:34,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1538. [2022-12-13 22:38:34,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1537 states have (on average 1.0013012361743656) internal successors, (1539), 1537 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:38:34,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 1539 transitions. [2022-12-13 22:38:34,896 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 1539 transitions. Word has length 768 [2022-12-13 22:38:34,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:38:34,897 INFO L495 AbstractCegarLoop]: Abstraction has 1538 states and 1539 transitions. [2022-12-13 22:38:34,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 385 states, 385 states have (on average 3.987012987012987) internal successors, (1535), 385 states have internal predecessors, (1535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:38:34,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 1539 transitions. [2022-12-13 22:38:34,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1537 [2022-12-13 22:38:34,913 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:38:34,913 INFO L195 NwaCegarLoop]: trace histogram [382, 382, 382, 382, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:38:34,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 22:38:35,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 22:38:35,115 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:38:35,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:38:35,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1785429568, now seen corresponding path program 7 times [2022-12-13 22:38:35,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:38:35,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011766964] [2022-12-13 22:38:35,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:38:35,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:38:35,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:40:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 291466 backedges. 0 proven. 291466 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:40:28,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 22:40:28,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011766964] [2022-12-13 22:40:28,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011766964] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:40:28,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753587050] [2022-12-13 22:40:28,185 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-13 22:40:28,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 22:40:28,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:40:28,186 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 22:40:28,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 22:40:29,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:40:29,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 13068 conjuncts, 384 conjunts are in the unsatisfiable core [2022-12-13 22:40:29,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:40:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 291466 backedges. 0 proven. 291466 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:40:30,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:42:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 291466 backedges. 0 proven. 291466 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:42:21,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753587050] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:42:21,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 22:42:21,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [385, 385, 385] total 769 [2022-12-13 22:42:21,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736641470] [2022-12-13 22:42:21,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 22:42:21,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 769 states [2022-12-13 22:42:21,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 22:42:21,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 769 interpolants. [2022-12-13 22:42:21,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=295296, Invalid=295296, Unknown=0, NotChecked=0, Total=590592 [2022-12-13 22:42:21,148 INFO L87 Difference]: Start difference. First operand 1538 states and 1539 transitions. Second operand has 769 states, 769 states have (on average 3.9934980494148244) internal successors, (3071), 769 states have internal predecessors, (3071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:42:58,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:42:58,538 INFO L93 Difference]: Finished difference Result 3081 states and 3466 transitions. [2022-12-13 22:42:58,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 768 states. [2022-12-13 22:42:58,539 INFO L78 Accepts]: Start accepts. Automaton has has 769 states, 769 states have (on average 3.9934980494148244) internal successors, (3071), 769 states have internal predecessors, (3071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1536 [2022-12-13 22:42:58,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:42:58,545 INFO L225 Difference]: With dead ends: 3081 [2022-12-13 22:42:58,545 INFO L226 Difference]: Without dead ends: 3074 [2022-12-13 22:42:58,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3455 GetRequests, 2688 SyntacticMatches, 0 SemanticMatches, 767 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1528 ImplicationChecksByTransitivity, 142.5s TimeCoverageRelationStatistics Valid=295296, Invalid=295296, Unknown=0, NotChecked=0, Total=590592 [2022-12-13 22:42:58,569 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 1570 mSDsCounter, 0 mSdLazyCounter, 1538 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1582 SdHoareTripleChecker+Invalid, 1540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-12-13 22:42:58,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1582 Invalid, 1540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1538 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-12-13 22:42:58,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3074 states. [2022-12-13 22:42:58,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3074 to 3074. [2022-12-13 22:42:58,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3074 states, 3073 states have (on average 1.0006508298080052) internal successors, (3075), 3073 states have internal predecessors, (3075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:42:58,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3074 states to 3074 states and 3075 transitions. [2022-12-13 22:42:58,624 INFO L78 Accepts]: Start accepts. Automaton has 3074 states and 3075 transitions. Word has length 1536 [2022-12-13 22:42:58,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:42:58,625 INFO L495 AbstractCegarLoop]: Abstraction has 3074 states and 3075 transitions. [2022-12-13 22:42:58,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 769 states, 769 states have (on average 3.9934980494148244) internal successors, (3071), 769 states have internal predecessors, (3071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 22:42:58,626 INFO L276 IsEmpty]: Start isEmpty. Operand 3074 states and 3075 transitions. [2022-12-13 22:42:58,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3073 [2022-12-13 22:42:58,683 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:42:58,684 INFO L195 NwaCegarLoop]: trace histogram [766, 766, 766, 766, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:42:58,709 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 22:42:58,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_22808177-829d-4f81-89cf-2184a3769a06/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 22:42:58,885 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 22:42:58,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:42:58,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1531458496, now seen corresponding path program 8 times [2022-12-13 22:42:58,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 22:42:58,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125757545] [2022-12-13 22:42:58,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:42:58,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 22:43:01,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat