./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R --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 df76811034b688387cfe28dd1eb6de91c21580662ac8ddb8163b41c1d6179172 --- 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-38b53e6 [2022-11-25 18:31:48,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:31:48,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:31:48,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:31:48,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:31:48,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:31:48,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:31:48,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:31:48,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:31:48,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:31:48,616 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:31:48,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:31:48,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:31:48,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:31:48,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:31:48,628 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:31:48,629 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:31:48,630 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:31:48,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:31:48,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:31:48,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:31:48,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:31:48,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:31:48,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:31:48,653 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:31:48,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:31:48,654 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:31:48,655 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:31:48,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:31:48,656 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:31:48,656 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:31:48,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:31:48,658 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:31:48,659 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:31:48,660 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:31:48,660 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:31:48,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:31:48,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:31:48,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:31:48,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:31:48,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:31:48,664 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 18:31:48,700 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:31:48,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:31:48,702 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:31:48,703 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:31:48,704 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:31:48,704 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:31:48,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:31:48,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:31:48,705 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:31:48,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:31:48,706 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:31:48,707 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:31:48,707 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:31:48,707 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:31:48,707 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 18:31:48,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:31:48,708 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 18:31:48,708 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:31:48,708 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 18:31:48,708 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:31:48,708 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 18:31:48,709 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:31:48,709 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:31:48,709 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:31:48,709 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:31:48,710 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:31:48,710 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:31:48,710 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 18:31:48,710 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:31:48,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:31:48,711 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:31:48,711 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 18:31:48,711 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:31:48,711 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:31:48,712 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_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> df76811034b688387cfe28dd1eb6de91c21580662ac8ddb8163b41c1d6179172 [2022-11-25 18:31:49,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:31:49,044 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:31:49,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:31:49,048 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:31:49,049 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:31:49,050 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c [2022-11-25 18:31:52,114 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:31:52,410 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:31:52,410 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c [2022-11-25 18:31:52,420 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/data/84bba29ab/4de3d0a159a74f9c9fbca015f19508d6/FLAG6099e55d0 [2022-11-25 18:31:52,440 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/data/84bba29ab/4de3d0a159a74f9c9fbca015f19508d6 [2022-11-25 18:31:52,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:31:52,445 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:31:52,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:31:52,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:31:52,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:31:52,454 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:31:52" (1/1) ... [2022-11-25 18:31:52,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea28515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:31:52, skipping insertion in model container [2022-11-25 18:31:52,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:31:52" (1/1) ... [2022-11-25 18:31:52,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:31:52,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:31:52,672 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_cecab300-4bd2-4fd4-874e-f139b53d42c0/sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c[333,346] [2022-11-25 18:31:52,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:31:52,722 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:31:52,734 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_cecab300-4bd2-4fd4-874e-f139b53d42c0/sv-benchmarks/c/array-multidimensional/init-non-constant-3-u.c[333,346] [2022-11-25 18:31:52,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:31:52,756 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:31:52,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:31:52 WrapperNode [2022-11-25 18:31:52,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:31:52,758 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:31:52,758 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:31:52,758 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:31:52,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:31:52" (1/1) ... [2022-11-25 18:31:52,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:31:52" (1/1) ... [2022-11-25 18:31:52,803 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2022-11-25 18:31:52,804 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:31:52,805 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:31:52,805 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:31:52,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:31:52,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:31:52" (1/1) ... [2022-11-25 18:31:52,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:31:52" (1/1) ... [2022-11-25 18:31:52,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:31:52" (1/1) ... [2022-11-25 18:31:52,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:31:52" (1/1) ... [2022-11-25 18:31:52,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:31:52" (1/1) ... [2022-11-25 18:31:52,840 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:31:52" (1/1) ... [2022-11-25 18:31:52,847 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:31:52" (1/1) ... [2022-11-25 18:31:52,848 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:31:52" (1/1) ... [2022-11-25 18:31:52,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:31:52,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:31:52,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:31:52,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:31:52,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:31:52" (1/1) ... [2022-11-25 18:31:52,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:31:52,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:31:52,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:31:52,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:31:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:31:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 18:31:52,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:31:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 18:31:52,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:31:52,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:31:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 18:31:52,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:31:52,989 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:31:52,991 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:31:53,162 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:31:53,168 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:31:53,168 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-25 18:31:53,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:31:53 BoogieIcfgContainer [2022-11-25 18:31:53,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:31:53,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:31:53,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:31:53,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:31:53,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:31:52" (1/3) ... [2022-11-25 18:31:53,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b0936b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:31:53, skipping insertion in model container [2022-11-25 18:31:53,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:31:52" (2/3) ... [2022-11-25 18:31:53,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b0936b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:31:53, skipping insertion in model container [2022-11-25 18:31:53,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:31:53" (3/3) ... [2022-11-25 18:31:53,181 INFO L112 eAbstractionObserver]: Analyzing ICFG init-non-constant-3-u.c [2022-11-25 18:31:53,201 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:31:53,202 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 18:31:53,297 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:31:53,323 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;@2d6148ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:31:53,323 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 18:31:53,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:53,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 18:31:53,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:31:53,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:31:53,352 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:31:53,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:31:53,358 INFO L85 PathProgramCache]: Analyzing trace with hash 468841592, now seen corresponding path program 1 times [2022-11-25 18:31:53,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:31:53,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030616086] [2022-11-25 18:31:53,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:31:53,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:31:53,501 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:31:53,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [246330125] [2022-11-25 18:31:53,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:31:53,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:31:53,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:31:53,534 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:31:53,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 18:31:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:31:53,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-25 18:31:53,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:31:53,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:31:53,663 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:31:53,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:31:53,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030616086] [2022-11-25 18:31:53,664 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:31:53,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246330125] [2022-11-25 18:31:53,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246330125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:31:53,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:31:53,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:31:53,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213118148] [2022-11-25 18:31:53,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:31:53,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-25 18:31:53,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:31:53,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-25 18:31:53,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:31:53,703 INFO L87 Difference]: Start difference. First operand has 21 states, 19 states have (on average 1.736842105263158) internal successors, (33), 20 states have internal predecessors, (33), 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 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:53,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:31:53,722 INFO L93 Difference]: Finished difference Result 40 states and 64 transitions. [2022-11-25 18:31:53,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-25 18:31:53,725 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-11-25 18:31:53,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:31:53,733 INFO L225 Difference]: With dead ends: 40 [2022-11-25 18:31:53,733 INFO L226 Difference]: Without dead ends: 17 [2022-11-25 18:31:53,741 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-25 18:31:53,745 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:31:53,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:31:53,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-25 18:31:53,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-25 18:31:53,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:53,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2022-11-25 18:31:53,782 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 9 [2022-11-25 18:31:53,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:31:53,783 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2022-11-25 18:31:53,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:53,783 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2022-11-25 18:31:53,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-25 18:31:53,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:31:53,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:31:53,793 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:31:53,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-25 18:31:53,991 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:31:53,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:31:53,992 INFO L85 PathProgramCache]: Analyzing trace with hash -386465062, now seen corresponding path program 1 times [2022-11-25 18:31:53,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:31:53,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810147727] [2022-11-25 18:31:53,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:31:53,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:31:54,008 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:31:54,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015583640] [2022-11-25 18:31:54,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:31:54,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:31:54,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:31:54,010 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:31:54,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 18:31:54,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:31:54,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:31:54,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:31:54,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:31:54,145 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:31:54,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:31:54,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810147727] [2022-11-25 18:31:54,146 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:31:54,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015583640] [2022-11-25 18:31:54,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015583640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:31:54,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:31:54,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:31:54,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961946698] [2022-11-25 18:31:54,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:31:54,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:31:54,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:31:54,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:31:54,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:31:54,177 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:54,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:31:54,218 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2022-11-25 18:31:54,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:31:54,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2022-11-25 18:31:54,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:31:54,220 INFO L225 Difference]: With dead ends: 32 [2022-11-25 18:31:54,220 INFO L226 Difference]: Without dead ends: 22 [2022-11-25 18:31:54,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:31:54,238 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:31:54,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 23 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:31:54,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-25 18:31:54,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2022-11-25 18:31:54,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 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) [2022-11-25 18:31:54,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2022-11-25 18:31:54,245 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 9 [2022-11-25 18:31:54,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:31:54,245 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2022-11-25 18:31:54,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:54,246 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-11-25 18:31:54,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-25 18:31:54,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:31:54,247 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:31:54,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 18:31:54,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-25 18:31:54,453 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:31:54,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:31:54,454 INFO L85 PathProgramCache]: Analyzing trace with hash 750439074, now seen corresponding path program 1 times [2022-11-25 18:31:54,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:31:54,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150535968] [2022-11-25 18:31:54,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:31:54,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:31:54,468 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:31:54,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1796767176] [2022-11-25 18:31:54,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:31:54,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:31:54,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:31:54,470 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:31:54,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 18:31:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:31:54,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:31:54,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:31:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:31:54,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:31:54,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:31:54,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150535968] [2022-11-25 18:31:54,607 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:31:54,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796767176] [2022-11-25 18:31:54,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796767176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:31:54,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:31:54,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:31:54,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942156649] [2022-11-25 18:31:54,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:31:54,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:31:54,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:31:54,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:31:54,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:31:54,610 INFO L87 Difference]: Start difference. First operand 18 states and 23 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) [2022-11-25 18:31:54,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:31:54,697 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2022-11-25 18:31:54,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:31:54,698 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 12 [2022-11-25 18:31:54,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:31:54,700 INFO L225 Difference]: With dead ends: 44 [2022-11-25 18:31:54,701 INFO L226 Difference]: Without dead ends: 29 [2022-11-25 18:31:54,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:31:54,708 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 29 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:31:54,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 17 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:31:54,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-25 18:31:54,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2022-11-25 18:31:54,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:54,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2022-11-25 18:31:54,725 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 12 [2022-11-25 18:31:54,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:31:54,725 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2022-11-25 18:31:54,725 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) [2022-11-25 18:31:54,725 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2022-11-25 18:31:54,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-25 18:31:54,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:31:54,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:31:54,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 18:31:54,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:31:54,927 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:31:54,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:31:54,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1168938424, now seen corresponding path program 1 times [2022-11-25 18:31:54,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:31:54,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681454133] [2022-11-25 18:31:54,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:31:54,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:31:54,949 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:31:54,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1485680901] [2022-11-25 18:31:54,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:31:54,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:31:54,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:31:54,952 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:31:54,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 18:31:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:31:55,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:31:55,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:31:55,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:31:55,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:31:55,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:31:55,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681454133] [2022-11-25 18:31:55,076 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:31:55,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485680901] [2022-11-25 18:31:55,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485680901] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:31:55,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:31:55,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 18:31:55,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809356831] [2022-11-25 18:31:55,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:31:55,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:31:55,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:31:55,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:31:55,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:31:55,080 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:55,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:31:55,149 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2022-11-25 18:31:55,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 18:31:55,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2022-11-25 18:31:55,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:31:55,153 INFO L225 Difference]: With dead ends: 44 [2022-11-25 18:31:55,154 INFO L226 Difference]: Without dead ends: 27 [2022-11-25 18:31:55,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:31:55,155 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 30 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 18:31:55,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 18 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 18:31:55,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-25 18:31:55,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2022-11-25 18:31:55,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 21 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) [2022-11-25 18:31:55,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2022-11-25 18:31:55,162 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 15 [2022-11-25 18:31:55,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:31:55,162 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2022-11-25 18:31:55,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:55,163 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2022-11-25 18:31:55,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-25 18:31:55,163 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:31:55,163 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:31:55,170 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-25 18:31:55,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:31:55,369 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:31:55,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:31:55,370 INFO L85 PathProgramCache]: Analyzing trace with hash 18975699, now seen corresponding path program 1 times [2022-11-25 18:31:55,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:31:55,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775665349] [2022-11-25 18:31:55,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:31:55,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:31:55,382 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:31:55,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765491792] [2022-11-25 18:31:55,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:31:55,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:31:55,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:31:55,384 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:31:55,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 18:31:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:31:55,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:31:55,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:31:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:31:55,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:31:55,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:31:55,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:31:55,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775665349] [2022-11-25 18:31:55,568 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:31:55,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765491792] [2022-11-25 18:31:55,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1765491792] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:31:55,568 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:31:55,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-25 18:31:55,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362244850] [2022-11-25 18:31:55,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:31:55,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 18:31:55,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:31:55,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 18:31:55,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-11-25 18:31:55,571 INFO L87 Difference]: Start difference. First operand 22 states and 27 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:55,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:31:55,697 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2022-11-25 18:31:55,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 18:31:55,697 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 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 16 [2022-11-25 18:31:55,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:31:55,699 INFO L225 Difference]: With dead ends: 60 [2022-11-25 18:31:55,699 INFO L226 Difference]: Without dead ends: 41 [2022-11-25 18:31:55,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2022-11-25 18:31:55,703 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 55 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:31:55,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 39 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:31:55,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-25 18:31:55,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2022-11-25 18:31:55,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:55,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2022-11-25 18:31:55,714 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 16 [2022-11-25 18:31:55,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:31:55,715 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2022-11-25 18:31:55,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:55,715 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2022-11-25 18:31:55,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-25 18:31:55,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:31:55,716 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:31:55,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 18:31:55,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:31:55,922 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:31:55,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:31:55,922 INFO L85 PathProgramCache]: Analyzing trace with hash -163134344, now seen corresponding path program 2 times [2022-11-25 18:31:55,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:31:55,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052627588] [2022-11-25 18:31:55,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:31:55,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:31:55,939 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:31:55,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [832203089] [2022-11-25 18:31:55,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:31:55,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:31:55,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:31:55,941 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:31:55,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 18:31:56,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:31:56,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:31:56,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 18:31:56,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:31:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:31:56,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:31:56,193 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:31:56,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:31:56,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052627588] [2022-11-25 18:31:56,194 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:31:56,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832203089] [2022-11-25 18:31:56,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832203089] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:31:56,194 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:31:56,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-25 18:31:56,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651783348] [2022-11-25 18:31:56,195 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:31:56,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 18:31:56,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:31:56,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 18:31:56,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2022-11-25 18:31:56,199 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 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) [2022-11-25 18:31:56,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:31:56,406 INFO L93 Difference]: Finished difference Result 108 states and 133 transitions. [2022-11-25 18:31:56,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-25 18:31:56,407 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 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) Word has length 19 [2022-11-25 18:31:56,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:31:56,408 INFO L225 Difference]: With dead ends: 108 [2022-11-25 18:31:56,408 INFO L226 Difference]: Without dead ends: 77 [2022-11-25 18:31:56,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2022-11-25 18:31:56,411 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 107 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:31:56,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 59 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:31:56,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2022-11-25 18:31:56,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 58. [2022-11-25 18:31:56,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.263157894736842) internal successors, (72), 57 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:56,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2022-11-25 18:31:56,436 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 19 [2022-11-25 18:31:56,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:31:56,436 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2022-11-25 18:31:56,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 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) [2022-11-25 18:31:56,437 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2022-11-25 18:31:56,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-25 18:31:56,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:31:56,438 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:31:56,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 18:31:56,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 18:31:56,644 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:31:56,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:31:56,645 INFO L85 PathProgramCache]: Analyzing trace with hash 125892248, now seen corresponding path program 3 times [2022-11-25 18:31:56,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:31:56,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464776276] [2022-11-25 18:31:56,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:31:56,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:31:56,662 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:31:56,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [350690816] [2022-11-25 18:31:56,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-25 18:31:56,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:31:56,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:31:56,664 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:31:56,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 18:31:56,735 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-25 18:31:56,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:31:56,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 18:31:56,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:31:56,891 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-25 18:31:56,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:31:56,950 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-25 18:31:56,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:31:56,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464776276] [2022-11-25 18:31:56,951 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:31:56,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350690816] [2022-11-25 18:31:56,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350690816] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:31:56,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:31:56,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-25 18:31:56,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307015550] [2022-11-25 18:31:56,952 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:31:56,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:31:56,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:31:56,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:31:56,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:31:56,954 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:57,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:31:57,054 INFO L93 Difference]: Finished difference Result 145 states and 179 transitions. [2022-11-25 18:31:57,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:31:57,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 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 25 [2022-11-25 18:31:57,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:31:57,059 INFO L225 Difference]: With dead ends: 145 [2022-11-25 18:31:57,060 INFO L226 Difference]: Without dead ends: 106 [2022-11-25 18:31:57,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:31:57,062 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 18:31:57,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 33 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 18:31:57,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-25 18:31:57,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-11-25 18:31:57,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.2) internal successors, (126), 105 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:57,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 126 transitions. [2022-11-25 18:31:57,107 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 126 transitions. Word has length 25 [2022-11-25 18:31:57,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:31:57,107 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 126 transitions. [2022-11-25 18:31:57,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:57,108 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 126 transitions. [2022-11-25 18:31:57,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-25 18:31:57,112 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:31:57,112 INFO L195 NwaCegarLoop]: trace histogram [40, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:31:57,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 18:31:57,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:31:57,318 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:31:57,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:31:57,319 INFO L85 PathProgramCache]: Analyzing trace with hash -976524846, now seen corresponding path program 4 times [2022-11-25 18:31:57,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:31:57,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877517533] [2022-11-25 18:31:57,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:31:57,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:31:57,380 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:31:57,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [814061398] [2022-11-25 18:31:57,395 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-25 18:31:57,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:31:57,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:31:57,397 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:31:57,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 18:31:57,544 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-25 18:31:57,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:31:57,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 18:31:57,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:31:57,774 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 427 proven. 11 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2022-11-25 18:31:57,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:31:57,979 INFO L134 CoverageAnalysis]: Checked inductivity of 996 backedges. 427 proven. 11 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2022-11-25 18:31:57,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 18:31:57,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877517533] [2022-11-25 18:31:57,980 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-25 18:31:57,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [814061398] [2022-11-25 18:31:57,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [814061398] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:31:57,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:31:57,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2022-11-25 18:31:57,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971347347] [2022-11-25 18:31:57,981 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:31:57,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-25 18:31:57,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 18:31:57,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-25 18:31:57,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=484, Unknown=0, NotChecked=0, Total=756 [2022-11-25 18:31:57,987 INFO L87 Difference]: Start difference. First operand 106 states and 126 transitions. Second operand has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:58,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 18:31:58,953 INFO L93 Difference]: Finished difference Result 497 states and 572 transitions. [2022-11-25 18:31:58,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-25 18:31:58,954 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 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 73 [2022-11-25 18:31:58,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 18:31:58,955 INFO L225 Difference]: With dead ends: 497 [2022-11-25 18:31:58,955 INFO L226 Difference]: Without dead ends: 408 [2022-11-25 18:31:58,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1244 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1415, Invalid=2617, Unknown=0, NotChecked=0, Total=4032 [2022-11-25 18:31:58,958 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 217 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 324 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 18:31:58,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 256 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 324 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 18:31:58,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-11-25 18:31:59,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 361. [2022-11-25 18:31:59,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.1833333333333333) internal successors, (426), 360 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:59,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 426 transitions. [2022-11-25 18:31:59,023 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 426 transitions. Word has length 73 [2022-11-25 18:31:59,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 18:31:59,024 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 426 transitions. [2022-11-25 18:31:59,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.6428571428571428) internal successors, (46), 28 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:31:59,024 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 426 transitions. [2022-11-25 18:31:59,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-11-25 18:31:59,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 18:31:59,027 INFO L195 NwaCegarLoop]: trace histogram [160, 16, 16, 16, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:31:59,038 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-25 18:31:59,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-25 18:31:59,233 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 18:31:59,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:31:59,234 INFO L85 PathProgramCache]: Analyzing trace with hash -367550246, now seen corresponding path program 5 times [2022-11-25 18:31:59,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 18:31:59,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884344678] [2022-11-25 18:31:59,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:31:59,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 18:31:59,328 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-25 18:31:59,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281491546] [2022-11-25 18:31:59,328 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-25 18:31:59,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 18:31:59,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:31:59,330 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 18:31:59,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cecab300-4bd2-4fd4-874e-f139b53d42c0/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process