./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_copyInitSum3_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_copyInitSum3_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9e3997a2a1cd8cbe038fe2c0a5bc044283ed06667aa7ef42f046d1134291f84e --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 20:36:09,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 20:36:09,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 20:36:09,810 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 20:36:09,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 20:36:09,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 20:36:09,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 20:36:09,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 20:36:09,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 20:36:09,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 20:36:09,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 20:36:09,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 20:36:09,816 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 20:36:09,816 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 20:36:09,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 20:36:09,818 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 20:36:09,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 20:36:09,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 20:36:09,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 20:36:09,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 20:36:09,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 20:36:09,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 20:36:09,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 20:36:09,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 20:36:09,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 20:36:09,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 20:36:09,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 20:36:09,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 20:36:09,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 20:36:09,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 20:36:09,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 20:36:09,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 20:36:09,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 20:36:09,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 20:36:09,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 20:36:09,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 20:36:09,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 20:36:09,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 20:36:09,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 20:36:09,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 20:36:09,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 20:36:09,834 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 20:36:09,875 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 20:36:09,876 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 20:36:09,876 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 20:36:09,881 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 20:36:09,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 20:36:09,881 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 20:36:09,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 20:36:09,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 20:36:09,882 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 20:36:09,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 20:36:09,883 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 20:36:09,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 20:36:09,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 20:36:09,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 20:36:09,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 20:36:09,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 20:36:09,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 20:36:09,884 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 20:36:09,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 20:36:09,884 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 20:36:09,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 20:36:09,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 20:36:09,885 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 20:36:09,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 20:36:09,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:36:09,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 20:36:09,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 20:36:09,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 20:36:09,886 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 20:36:09,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 20:36:09,886 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 20:36:09,886 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 20:36:09,887 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 20:36:09,887 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 20:36:09,887 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 20:36:09,887 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_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e3997a2a1cd8cbe038fe2c0a5bc044283ed06667aa7ef42f046d1134291f84e [2022-12-13 20:36:10,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 20:36:10,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 20:36:10,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 20:36:10,095 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 20:36:10,095 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 20:36:10,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/array-examples/standard_copyInitSum3_ground.i [2022-12-13 20:36:12,678 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 20:36:12,806 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 20:36:12,806 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/sv-benchmarks/c/array-examples/standard_copyInitSum3_ground.i [2022-12-13 20:36:12,810 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/data/635a33447/cfe00a8fa7b9469ebfe7509a84b84bd2/FLAGf336f0e6d [2022-12-13 20:36:12,825 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/data/635a33447/cfe00a8fa7b9469ebfe7509a84b84bd2 [2022-12-13 20:36:12,828 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 20:36:12,829 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 20:36:12,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 20:36:12,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 20:36:12,833 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 20:36:12,834 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:36:12" (1/1) ... [2022-12-13 20:36:12,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60df4d07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:12, skipping insertion in model container [2022-12-13 20:36:12,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 08:36:12" (1/1) ... [2022-12-13 20:36:12,843 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 20:36:12,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 20:36:12,995 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_51b05fad-af48-47c2-bea1-8a659a489d3c/sv-benchmarks/c/array-examples/standard_copyInitSum3_ground.i[821,834] [2022-12-13 20:36:13,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:36:13,019 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 20:36:13,031 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_51b05fad-af48-47c2-bea1-8a659a489d3c/sv-benchmarks/c/array-examples/standard_copyInitSum3_ground.i[821,834] [2022-12-13 20:36:13,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 20:36:13,049 INFO L208 MainTranslator]: Completed translation [2022-12-13 20:36:13,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:13 WrapperNode [2022-12-13 20:36:13,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 20:36:13,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 20:36:13,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 20:36:13,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 20:36:13,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:13" (1/1) ... [2022-12-13 20:36:13,061 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:13" (1/1) ... [2022-12-13 20:36:13,074 INFO L138 Inliner]: procedures = 15, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2022-12-13 20:36:13,074 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 20:36:13,075 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 20:36:13,075 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 20:36:13,075 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 20:36:13,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:13" (1/1) ... [2022-12-13 20:36:13,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:13" (1/1) ... [2022-12-13 20:36:13,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:13" (1/1) ... [2022-12-13 20:36:13,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:13" (1/1) ... [2022-12-13 20:36:13,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:13" (1/1) ... [2022-12-13 20:36:13,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:13" (1/1) ... [2022-12-13 20:36:13,093 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:13" (1/1) ... [2022-12-13 20:36:13,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:13" (1/1) ... [2022-12-13 20:36:13,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 20:36:13,097 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 20:36:13,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 20:36:13,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 20:36:13,099 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:13" (1/1) ... [2022-12-13 20:36:13,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 20:36:13,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:36:13,124 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 20:36:13,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 20:36:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 20:36:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 20:36:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-13 20:36:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 20:36:13,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 20:36:13,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 20:36:13,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 20:36:13,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 20:36:13,207 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 20:36:13,208 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 20:36:13,309 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 20:36:13,314 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 20:36:13,314 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-12-13 20:36:13,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:36:13 BoogieIcfgContainer [2022-12-13 20:36:13,316 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 20:36:13,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 20:36:13,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 20:36:13,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 20:36:13,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 08:36:12" (1/3) ... [2022-12-13 20:36:13,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e2fc3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:36:13, skipping insertion in model container [2022-12-13 20:36:13,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 08:36:13" (2/3) ... [2022-12-13 20:36:13,322 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e2fc3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 08:36:13, skipping insertion in model container [2022-12-13 20:36:13,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 08:36:13" (3/3) ... [2022-12-13 20:36:13,324 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_copyInitSum3_ground.i [2022-12-13 20:36:13,338 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 20:36:13,338 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 20:36:13,373 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 20:36:13,378 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;@77fbcd6c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 20:36:13,379 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 20:36:13,382 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 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) [2022-12-13 20:36:13,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 20:36:13,386 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:36:13,387 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:36:13,387 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:36:13,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:36:13,391 INFO L85 PathProgramCache]: Analyzing trace with hash -211808190, now seen corresponding path program 1 times [2022-12-13 20:36:13,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:36:13,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575360896] [2022-12-13 20:36:13,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:36:13,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:36:13,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:36:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 20:36:13,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:36:13,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575360896] [2022-12-13 20:36:13,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575360896] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 20:36:13,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 20:36:13,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 20:36:13,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260282337] [2022-12-13 20:36:13,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 20:36:13,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 20:36:13,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:36:13,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 20:36:13,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:36:13,621 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 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 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:13,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:36:13,671 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2022-12-13 20:36:13,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 20:36:13,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2022-12-13 20:36:13,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:36:13,679 INFO L225 Difference]: With dead ends: 50 [2022-12-13 20:36:13,679 INFO L226 Difference]: Without dead ends: 26 [2022-12-13 20:36:13,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 20:36:13,685 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 3 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 20:36:13,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 32 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 20:36:13,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-12-13 20:36:13,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-12-13 20:36:13,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:13,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-12-13 20:36:13,713 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 13 [2022-12-13 20:36:13,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:36:13,713 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-12-13 20:36:13,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:13,714 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-12-13 20:36:13,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-13 20:36:13,715 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:36:13,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:36:13,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 20:36:13,715 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:36:13,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:36:13,716 INFO L85 PathProgramCache]: Analyzing trace with hash 343774103, now seen corresponding path program 1 times [2022-12-13 20:36:13,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:36:13,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332808033] [2022-12-13 20:36:13,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:36:13,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:36:13,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:36:13,816 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 20:36:13,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:36:13,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332808033] [2022-12-13 20:36:13,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332808033] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:36:13,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146713903] [2022-12-13 20:36:13,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:36:13,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:36:13,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:36:13,819 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:36:13,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 20:36:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:36:13,881 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 20:36:13,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:36:13,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 20:36:13,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:36:13,946 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 20:36:13,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146713903] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:36:13,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:36:13,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-13 20:36:13,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085424129] [2022-12-13 20:36:13,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:36:13,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 20:36:13,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:36:13,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 20:36:13,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:36:13,950 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 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) [2022-12-13 20:36:14,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:36:14,043 INFO L93 Difference]: Finished difference Result 63 states and 82 transitions. [2022-12-13 20:36:14,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 20:36:14,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 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 20 [2022-12-13 20:36:14,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:36:14,045 INFO L225 Difference]: With dead ends: 63 [2022-12-13 20:36:14,045 INFO L226 Difference]: Without dead ends: 44 [2022-12-13 20:36:14,046 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-12-13 20:36:14,047 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 18 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:36:14,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 40 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:36:14,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-12-13 20:36:14,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-12-13 20:36:14,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:14,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2022-12-13 20:36:14,053 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 20 [2022-12-13 20:36:14,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:36:14,053 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2022-12-13 20:36:14,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 7 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) [2022-12-13 20:36:14,054 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2022-12-13 20:36:14,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-12-13 20:36:14,054 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:36:14,054 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:36:14,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 20:36:14,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:36:14,256 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:36:14,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:36:14,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1712584598, now seen corresponding path program 2 times [2022-12-13 20:36:14,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:36:14,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812145641] [2022-12-13 20:36:14,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:36:14,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:36:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:36:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 20:36:14,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:36:14,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812145641] [2022-12-13 20:36:14,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812145641] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:36:14,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622853256] [2022-12-13 20:36:14,536 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 20:36:14,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:36:14,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:36:14,537 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:36:14,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 20:36:14,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 20:36:14,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:36:14,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 20:36:14,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:36:14,645 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 20:36:14,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:36:14,701 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-13 20:36:14,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622853256] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:36:14,702 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:36:14,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-12-13 20:36:14,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9669770] [2022-12-13 20:36:14,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:36:14,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 20:36:14,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:36:14,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 20:36:14,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 20:36:14,705 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:14,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:36:14,854 INFO L93 Difference]: Finished difference Result 123 states and 154 transitions. [2022-12-13 20:36:14,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 20:36:14,855 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 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 41 [2022-12-13 20:36:14,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:36:14,856 INFO L225 Difference]: With dead ends: 123 [2022-12-13 20:36:14,856 INFO L226 Difference]: Without dead ends: 86 [2022-12-13 20:36:14,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-12-13 20:36:14,857 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 54 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 20:36:14,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 48 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 20:36:14,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-12-13 20:36:14,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-12-13 20:36:14,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 85 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:14,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2022-12-13 20:36:14,870 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 41 [2022-12-13 20:36:14,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:36:14,870 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2022-12-13 20:36:14,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:14,871 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2022-12-13 20:36:14,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-13 20:36:14,872 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:36:14,873 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:36:14,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 20:36:15,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:36:15,074 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:36:15,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:36:15,074 INFO L85 PathProgramCache]: Analyzing trace with hash -108691546, now seen corresponding path program 3 times [2022-12-13 20:36:15,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:36:15,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971924697] [2022-12-13 20:36:15,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:36:15,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:36:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:36:15,370 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-12-13 20:36:15,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:36:15,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971924697] [2022-12-13 20:36:15,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971924697] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:36:15,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456128589] [2022-12-13 20:36:15,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 20:36:15,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:36:15,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:36:15,372 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:36:15,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 20:36:15,959 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-13 20:36:15,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:36:15,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 20:36:15,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:36:15,997 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-12-13 20:36:15,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:36:16,142 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-12-13 20:36:16,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456128589] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:36:16,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:36:16,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-12-13 20:36:16,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193611409] [2022-12-13 20:36:16,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:36:16,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-13 20:36:16,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:36:16,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-13 20:36:16,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-12-13 20:36:16,145 INFO L87 Difference]: Start difference. First operand 86 states and 90 transitions. Second operand has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:16,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:36:16,488 INFO L93 Difference]: Finished difference Result 243 states and 298 transitions. [2022-12-13 20:36:16,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 20:36:16,488 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 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 83 [2022-12-13 20:36:16,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:36:16,489 INFO L225 Difference]: With dead ends: 243 [2022-12-13 20:36:16,490 INFO L226 Difference]: Without dead ends: 170 [2022-12-13 20:36:16,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-12-13 20:36:16,491 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 180 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 20:36:16,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 40 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 20:36:16,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-12-13 20:36:16,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-12-13 20:36:16,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.029585798816568) internal successors, (174), 169 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:16,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 174 transitions. [2022-12-13 20:36:16,509 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 174 transitions. Word has length 83 [2022-12-13 20:36:16,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:36:16,509 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 174 transitions. [2022-12-13 20:36:16,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.72) internal successors, (43), 25 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:16,510 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 174 transitions. [2022-12-13 20:36:16,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-12-13 20:36:16,514 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:36:16,514 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:36:16,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 20:36:16,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:36:16,716 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:36:16,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:36:16,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1893487586, now seen corresponding path program 4 times [2022-12-13 20:36:16,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:36:16,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480234482] [2022-12-13 20:36:16,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:36:16,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:36:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:36:17,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1452 trivial. 0 not checked. [2022-12-13 20:36:17,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:36:17,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480234482] [2022-12-13 20:36:17,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480234482] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:36:17,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369473777] [2022-12-13 20:36:17,729 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 20:36:17,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:36:17,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:36:17,730 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:36:17,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 20:36:17,906 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 20:36:17,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 20:36:17,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 20:36:17,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 20:36:17,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 1221 trivial. 0 not checked. [2022-12-13 20:36:17,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 20:36:18,499 INFO L134 CoverageAnalysis]: Checked inductivity of 1705 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 1221 trivial. 0 not checked. [2022-12-13 20:36:18,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369473777] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 20:36:18,500 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 20:36:18,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-12-13 20:36:18,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876496884] [2022-12-13 20:36:18,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 20:36:18,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-12-13 20:36:18,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 20:36:18,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-12-13 20:36:18,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 20:36:18,502 INFO L87 Difference]: Start difference. First operand 170 states and 174 transitions. Second operand has 49 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:19,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 20:36:19,054 INFO L93 Difference]: Finished difference Result 483 states and 586 transitions. [2022-12-13 20:36:19,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-12-13 20:36:19,055 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 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 167 [2022-12-13 20:36:19,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 20:36:19,056 INFO L225 Difference]: With dead ends: 483 [2022-12-13 20:36:19,056 INFO L226 Difference]: Without dead ends: 338 [2022-12-13 20:36:19,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-12-13 20:36:19,058 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 287 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 20:36:19,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 48 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 20:36:19,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-12-13 20:36:19,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2022-12-13 20:36:19,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 1.0148367952522255) internal successors, (342), 337 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:19,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 342 transitions. [2022-12-13 20:36:19,073 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 342 transitions. Word has length 167 [2022-12-13 20:36:19,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 20:36:19,073 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 342 transitions. [2022-12-13 20:36:19,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.938775510204082) internal successors, (144), 49 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 20:36:19,074 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 342 transitions. [2022-12-13 20:36:19,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2022-12-13 20:36:19,078 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 20:36:19,078 INFO L195 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 20:36:19,084 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 20:36:19,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:36:19,280 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 20:36:19,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 20:36:19,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1914240270, now seen corresponding path program 5 times [2022-12-13 20:36:19,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 20:36:19,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986402512] [2022-12-13 20:36:19,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 20:36:19,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 20:36:19,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 20:36:21,250 INFO L134 CoverageAnalysis]: Checked inductivity of 7429 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 6348 trivial. 0 not checked. [2022-12-13 20:36:21,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 20:36:21,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986402512] [2022-12-13 20:36:21,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986402512] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 20:36:21,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310962226] [2022-12-13 20:36:21,251 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-13 20:36:21,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 20:36:21,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 20:36:21,252 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 20:36:21,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_51b05fad-af48-47c2-bea1-8a659a489d3c/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process