./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/tree-4.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_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/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_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/tree-4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/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_18c8e82c-efe6-4465-a462-dc6c0204118b/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 93cf6e13715dcd5309cb599b4358d41a64464f02c52b3716bc554a9d0e833f5e --- 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 13:05:44,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:05:44,697 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:05:44,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:05:44,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:05:44,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:05:44,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:05:44,720 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:05:44,722 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:05:44,723 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:05:44,724 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:05:44,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:05:44,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:05:44,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:05:44,727 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:05:44,728 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:05:44,729 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:05:44,730 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:05:44,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:05:44,733 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:05:44,734 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:05:44,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:05:44,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:05:44,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:05:44,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:05:44,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:05:44,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:05:44,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:05:44,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:05:44,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:05:44,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:05:44,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:05:44,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:05:44,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:05:44,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:05:44,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:05:44,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:05:44,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:05:44,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:05:44,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:05:44,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:05:44,749 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 13:05:44,768 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:05:44,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:05:44,768 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:05:44,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:05:44,769 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:05:44,769 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:05:44,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:05:44,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:05:44,770 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:05:44,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:05:44,771 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:05:44,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 13:05:44,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:05:44,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:05:44,772 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:05:44,772 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:05:44,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:05:44,772 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:05:44,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:05:44,772 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:05:44,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:05:44,773 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:05:44,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:05:44,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:05:44,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:05:44,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:05:44,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:05:44,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:05:44,774 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 13:05:44,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 13:05:44,774 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:05:44,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:05:44,775 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:05:44,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:05:44,775 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:05:44,775 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_18c8e82c-efe6-4465-a462-dc6c0204118b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93cf6e13715dcd5309cb599b4358d41a64464f02c52b3716bc554a9d0e833f5e [2022-12-13 13:05:44,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:05:44,984 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:05:44,986 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:05:44,987 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:05:44,987 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:05:44,989 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/heap-manipulation/tree-4.i [2022-12-13 13:05:47,494 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:05:47,702 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:05:47,702 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/sv-benchmarks/c/heap-manipulation/tree-4.i [2022-12-13 13:05:47,710 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/data/3c32c8dc8/c64a52982a224303b49ee6d034130cd6/FLAGbd14383b8 [2022-12-13 13:05:47,720 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/data/3c32c8dc8/c64a52982a224303b49ee6d034130cd6 [2022-12-13 13:05:47,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:05:47,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:05:47,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:05:47,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:05:47,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:05:47,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:05:47" (1/1) ... [2022-12-13 13:05:47,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43f684b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:05:47, skipping insertion in model container [2022-12-13 13:05:47,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:05:47" (1/1) ... [2022-12-13 13:05:47,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:05:47,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:05:47,924 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_18c8e82c-efe6-4465-a462-dc6c0204118b/sv-benchmarks/c/heap-manipulation/tree-4.i[22626,22639] [2022-12-13 13:05:47,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:05:47,948 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:05:47,970 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_18c8e82c-efe6-4465-a462-dc6c0204118b/sv-benchmarks/c/heap-manipulation/tree-4.i[22626,22639] [2022-12-13 13:05:47,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:05:47,993 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:05:47,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:05:47 WrapperNode [2022-12-13 13:05:47,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:05:47,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:05:47,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:05:47,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:05:48,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:05:47" (1/1) ... [2022-12-13 13:05:48,008 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:05:47" (1/1) ... [2022-12-13 13:05:48,024 INFO L138 Inliner]: procedures = 122, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 146 [2022-12-13 13:05:48,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:05:48,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:05:48,024 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:05:48,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:05:48,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:05:47" (1/1) ... [2022-12-13 13:05:48,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:05:47" (1/1) ... [2022-12-13 13:05:48,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:05:47" (1/1) ... [2022-12-13 13:05:48,034 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:05:47" (1/1) ... [2022-12-13 13:05:48,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:05:47" (1/1) ... [2022-12-13 13:05:48,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:05:47" (1/1) ... [2022-12-13 13:05:48,043 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:05:47" (1/1) ... [2022-12-13 13:05:48,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:05:47" (1/1) ... [2022-12-13 13:05:48,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:05:48,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:05:48,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:05:48,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:05:48,047 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:05:47" (1/1) ... [2022-12-13 13:05:48,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:05:48,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:05:48,075 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:05:48,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:05:48,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-13 13:05:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-12-13 13:05:48,109 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-12-13 13:05:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-13 13:05:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 13:05:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:05:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 13:05:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 13:05:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:05:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 13:05:48,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:05:48,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:05:48,196 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:05:48,198 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:05:48,435 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:05:48,440 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:05:48,440 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-12-13 13:05:48,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:05:48 BoogieIcfgContainer [2022-12-13 13:05:48,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:05:48,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:05:48,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:05:48,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:05:48,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:05:47" (1/3) ... [2022-12-13 13:05:48,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18cc2c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:05:48, skipping insertion in model container [2022-12-13 13:05:48,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:05:47" (2/3) ... [2022-12-13 13:05:48,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18cc2c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:05:48, skipping insertion in model container [2022-12-13 13:05:48,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:05:48" (3/3) ... [2022-12-13 13:05:48,448 INFO L112 eAbstractionObserver]: Analyzing ICFG tree-4.i [2022-12-13 13:05:48,462 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:05:48,463 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:05:48,504 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:05:48,509 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;@538a534e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:05:48,509 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 13:05:48,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 40 states have (on average 1.725) internal successors, (69), 44 states have internal predecessors, (69), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 13:05:48,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 13:05:48,517 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:05:48,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:05:48,518 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:05:48,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:05:48,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1979325632, now seen corresponding path program 1 times [2022-12-13 13:05:48,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:05:48,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091206037] [2022-12-13 13:05:48,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:05:48,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:05:48,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:05:48,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:05:48,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:05:48,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091206037] [2022-12-13 13:05:48,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091206037] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:05:48,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:05:48,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:05:48,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110444755] [2022-12-13 13:05:48,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:05:48,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:05:48,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:05:48,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:05:48,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:05:48,701 INFO L87 Difference]: Start difference. First operand has 46 states, 40 states have (on average 1.725) internal successors, (69), 44 states have internal predecessors, (69), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:05:48,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:05:48,725 INFO L93 Difference]: Finished difference Result 88 states and 147 transitions. [2022-12-13 13:05:48,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 13:05:48,727 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-13 13:05:48,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:05:48,732 INFO L225 Difference]: With dead ends: 88 [2022-12-13 13:05:48,732 INFO L226 Difference]: Without dead ends: 31 [2022-12-13 13:05:48,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:05:48,737 INFO L413 NwaCegarLoop]: 56 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, 56 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:05:48,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:05:48,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-13 13:05:48,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-12-13 13:05:48,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 29 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:05:48,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2022-12-13 13:05:48,761 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 11 [2022-12-13 13:05:48,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:05:48,762 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2022-12-13 13:05:48,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:05:48,762 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2022-12-13 13:05:48,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 13:05:48,763 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:05:48,763 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:05:48,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 13:05:48,763 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:05:48,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:05:48,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1335578817, now seen corresponding path program 1 times [2022-12-13 13:05:48,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:05:48,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350207330] [2022-12-13 13:05:48,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:05:48,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:05:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:05:48,841 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 13:05:48,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:05:48,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350207330] [2022-12-13 13:05:48,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350207330] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:05:48,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:05:48,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:05:48,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068760418] [2022-12-13 13:05:48,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:05:48,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:05:48,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:05:48,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:05:48,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:05:48,845 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:05:48,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:05:48,890 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2022-12-13 13:05:48,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:05:48,891 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-13 13:05:48,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:05:48,892 INFO L225 Difference]: With dead ends: 57 [2022-12-13 13:05:48,892 INFO L226 Difference]: Without dead ends: 35 [2022-12-13 13:05:48,892 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 13:05:48,893 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 20 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:05:48,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 44 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:05:48,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-12-13 13:05:48,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-12-13 13:05:48,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 33 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:05:48,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2022-12-13 13:05:48,901 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 12 [2022-12-13 13:05:48,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:05:48,901 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2022-12-13 13:05:48,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:05:48,901 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2022-12-13 13:05:48,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-12-13 13:05:48,902 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:05:48,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:05:48,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 13:05:48,902 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:05:48,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:05:48,903 INFO L85 PathProgramCache]: Analyzing trace with hash -2144925443, now seen corresponding path program 1 times [2022-12-13 13:05:48,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:05:48,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3103131] [2022-12-13 13:05:48,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:05:48,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:05:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:05:49,015 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 13:05:49,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:05:49,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3103131] [2022-12-13 13:05:49,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3103131] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:05:49,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:05:49,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:05:49,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032972536] [2022-12-13 13:05:49,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:05:49,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:05:49,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:05:49,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:05:49,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:05:49,017 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:05:49,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:05:49,072 INFO L93 Difference]: Finished difference Result 73 states and 89 transitions. [2022-12-13 13:05:49,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:05:49,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-12-13 13:05:49,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:05:49,073 INFO L225 Difference]: With dead ends: 73 [2022-12-13 13:05:49,073 INFO L226 Difference]: Without dead ends: 38 [2022-12-13 13:05:49,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:05:49,075 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:05:49,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 131 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:05:49,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-12-13 13:05:49,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2022-12-13 13:05:49,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 35 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:05:49,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2022-12-13 13:05:49,081 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 12 [2022-12-13 13:05:49,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:05:49,081 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2022-12-13 13:05:49,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:05:49,081 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2022-12-13 13:05:49,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 13:05:49,082 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:05:49,082 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:05:49,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 13:05:49,082 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:05:49,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:05:49,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1456438760, now seen corresponding path program 1 times [2022-12-13 13:05:49,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:05:49,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555678088] [2022-12-13 13:05:49,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:05:49,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:05:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:05:49,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:05:49,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:05:49,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555678088] [2022-12-13 13:05:49,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555678088] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:05:49,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:05:49,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:05:49,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258579799] [2022-12-13 13:05:49,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:05:49,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:05:49,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:05:49,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:05:49,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:05:49,138 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:05:49,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:05:49,190 INFO L93 Difference]: Finished difference Result 59 states and 70 transitions. [2022-12-13 13:05:49,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:05:49,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-12-13 13:05:49,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:05:49,190 INFO L225 Difference]: With dead ends: 59 [2022-12-13 13:05:49,191 INFO L226 Difference]: Without dead ends: 39 [2022-12-13 13:05:49,191 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 13:05:49,192 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 3 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:05:49,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 55 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:05:49,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-12-13 13:05:49,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2022-12-13 13:05:49,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 35 states have internal predecessors, (40), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:05:49,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 43 transitions. [2022-12-13 13:05:49,196 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 43 transitions. Word has length 18 [2022-12-13 13:05:49,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:05:49,196 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 43 transitions. [2022-12-13 13:05:49,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:05:49,196 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 43 transitions. [2022-12-13 13:05:49,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-13 13:05:49,196 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:05:49,196 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:05:49,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 13:05:49,197 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:05:49,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:05:49,197 INFO L85 PathProgramCache]: Analyzing trace with hash -53531200, now seen corresponding path program 1 times [2022-12-13 13:05:49,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:05:49,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142335228] [2022-12-13 13:05:49,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:05:49,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:05:49,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:05:49,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:05:49,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:05:49,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142335228] [2022-12-13 13:05:49,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142335228] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:05:49,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:05:49,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:05:49,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748593133] [2022-12-13 13:05:49,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:05:49,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:05:49,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 13:05:49,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:05:49,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:05:49,416 INFO L87 Difference]: Start difference. First operand 37 states and 43 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:05:49,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:05:49,564 INFO L93 Difference]: Finished difference Result 80 states and 95 transitions. [2022-12-13 13:05:49,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:05:49,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-12-13 13:05:49,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:05:49,565 INFO L225 Difference]: With dead ends: 80 [2022-12-13 13:05:49,565 INFO L226 Difference]: Without dead ends: 50 [2022-12-13 13:05:49,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-13 13:05:49,566 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 108 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:05:49,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 83 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:05:49,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-13 13:05:49,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2022-12-13 13:05:49,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:05:49,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2022-12-13 13:05:49,571 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 21 [2022-12-13 13:05:49,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:05:49,571 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2022-12-13 13:05:49,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:05:49,571 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2022-12-13 13:05:49,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-12-13 13:05:49,572 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:05:49,572 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:05:49,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 13:05:49,572 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:05:49,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:05:49,572 INFO L85 PathProgramCache]: Analyzing trace with hash 2012239088, now seen corresponding path program 1 times [2022-12-13 13:05:49,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 13:05:49,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401990213] [2022-12-13 13:05:49,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:05:49,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 13:05:49,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:05:53,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:05:53,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 13:05:53,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401990213] [2022-12-13 13:05:53,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401990213] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 13:05:53,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615830733] [2022-12-13 13:05:53,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:05:53,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:05:53,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:05:53,602 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 13:05:53,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 13:05:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:05:53,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 89 conjunts are in the unsatisfiable core [2022-12-13 13:05:53,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:05:53,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-12-13 13:05:53,936 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:05:53,950 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-12-13 13:05:53,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-12-13 13:05:54,073 INFO L321 Elim1Store]: treesize reduction 152, result has 10.1 percent of original size [2022-12-13 13:05:54,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 8 new quantified variables, introduced 7 case distinctions, treesize of input 448 treesize of output 368 [2022-12-13 13:05:54,206 INFO L321 Elim1Store]: treesize reduction 292, result has 14.6 percent of original size [2022-12-13 13:05:54,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 467 treesize of output 682 [2022-12-13 13:05:54,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:05:54,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 193 [2022-12-13 13:05:54,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 459 treesize of output 439 [2022-12-13 13:05:54,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2022-12-13 13:05:54,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 7 [2022-12-13 13:05:54,666 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1636 treesize of output 1542 [2022-12-13 13:05:55,158 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-12-13 13:05:55,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:05:55,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 13:05:55,360 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: no need to replace index at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructDerEnabler(DerPreprocessor.java:187) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.(DerPreprocessor.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:353) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:190) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne3(DualJunctionSaa.java:172) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne2(DualJunctionSaa.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne1(DualJunctionSaa.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne0(DualJunctionSaa.java:122) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminateOne(DualJunctionSaa.java:108) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryExhaustivelyToEliminate(DualJunctionSaa.java:93) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionSaa.tryToEliminate(DualJunctionSaa.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:627) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:606) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:528) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:332) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:199) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-12-13 13:05:55,362 INFO L158 Benchmark]: Toolchain (without parser) took 7639.27ms. Allocated memory was 123.7MB in the beginning and 337.6MB in the end (delta: 213.9MB). Free memory was 89.5MB in the beginning and 273.4MB in the end (delta: -183.8MB). Peak memory consumption was 203.3MB. Max. memory is 16.1GB. [2022-12-13 13:05:55,362 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 123.7MB. Free memory is still 94.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 13:05:55,362 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.35ms. Allocated memory is still 123.7MB. Free memory was 89.5MB in the beginning and 72.3MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-12-13 13:05:55,363 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.68ms. Allocated memory is still 123.7MB. Free memory was 72.3MB in the beginning and 70.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:05:55,363 INFO L158 Benchmark]: Boogie Preprocessor took 21.68ms. Allocated memory is still 123.7MB. Free memory was 70.3MB in the beginning and 68.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 13:05:55,363 INFO L158 Benchmark]: RCFGBuilder took 395.69ms. Allocated memory is still 123.7MB. Free memory was 68.3MB in the beginning and 49.0MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-12-13 13:05:55,363 INFO L158 Benchmark]: TraceAbstraction took 6917.72ms. Allocated memory was 123.7MB in the beginning and 337.6MB in the end (delta: 213.9MB). Free memory was 48.5MB in the beginning and 273.4MB in the end (delta: -224.9MB). Peak memory consumption was 161.4MB. Max. memory is 16.1GB. [2022-12-13 13:05:55,364 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 123.7MB. Free memory is still 94.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 270.35ms. Allocated memory is still 123.7MB. Free memory was 89.5MB in the beginning and 72.3MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.68ms. Allocated memory is still 123.7MB. Free memory was 72.3MB in the beginning and 70.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.68ms. Allocated memory is still 123.7MB. Free memory was 70.3MB in the beginning and 68.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 395.69ms. Allocated memory is still 123.7MB. Free memory was 68.3MB in the beginning and 49.0MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 6917.72ms. Allocated memory was 123.7MB in the beginning and 337.6MB in the end (delta: 213.9MB). Free memory was 48.5MB in the beginning and 273.4MB in the end (delta: -224.9MB). Peak memory consumption was 161.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: no need to replace index de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: no need to replace index: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.DerPreprocessor.constructReplacementForSelectCase(DerPreprocessor.java:333) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-12-13 13:05:55,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/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_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/tree-4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/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 93cf6e13715dcd5309cb599b4358d41a64464f02c52b3716bc554a9d0e833f5e --- 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 13:05:57,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 13:05:57,001 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 13:05:57,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 13:05:57,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 13:05:57,014 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 13:05:57,015 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 13:05:57,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 13:05:57,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 13:05:57,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 13:05:57,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 13:05:57,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 13:05:57,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 13:05:57,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 13:05:57,021 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 13:05:57,022 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 13:05:57,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 13:05:57,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 13:05:57,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 13:05:57,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 13:05:57,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 13:05:57,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 13:05:57,028 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 13:05:57,029 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 13:05:57,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 13:05:57,033 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 13:05:57,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 13:05:57,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 13:05:57,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 13:05:57,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 13:05:57,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 13:05:57,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 13:05:57,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 13:05:57,038 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 13:05:57,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 13:05:57,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 13:05:57,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 13:05:57,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 13:05:57,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 13:05:57,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 13:05:57,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 13:05:57,043 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-12-13 13:05:57,067 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 13:05:57,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 13:05:57,067 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 13:05:57,067 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 13:05:57,068 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 13:05:57,068 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 13:05:57,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 13:05:57,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 13:05:57,069 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 13:05:57,069 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 13:05:57,069 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 13:05:57,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 13:05:57,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 13:05:57,070 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 13:05:57,070 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 13:05:57,070 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 13:05:57,070 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 13:05:57,071 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 13:05:57,071 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 13:05:57,071 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 13:05:57,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 13:05:57,071 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 13:05:57,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 13:05:57,072 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 13:05:57,072 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 13:05:57,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 13:05:57,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:05:57,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 13:05:57,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 13:05:57,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 13:05:57,073 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 13:05:57,073 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 13:05:57,073 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 13:05:57,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 13:05:57,073 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 13:05:57,074 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 13:05:57,074 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 13:05:57,074 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 13:05:57,074 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_18c8e82c-efe6-4465-a462-dc6c0204118b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93cf6e13715dcd5309cb599b4358d41a64464f02c52b3716bc554a9d0e833f5e [2022-12-13 13:05:57,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 13:05:57,331 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 13:05:57,333 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 13:05:57,333 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 13:05:57,334 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 13:05:57,335 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/heap-manipulation/tree-4.i [2022-12-13 13:05:59,857 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 13:06:00,060 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 13:06:00,060 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/sv-benchmarks/c/heap-manipulation/tree-4.i [2022-12-13 13:06:00,072 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/data/f7bd7bc30/1ec8cfb63b504dcf95262e23c8021324/FLAG3d835b291 [2022-12-13 13:06:00,424 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/data/f7bd7bc30/1ec8cfb63b504dcf95262e23c8021324 [2022-12-13 13:06:00,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 13:06:00,430 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 13:06:00,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 13:06:00,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 13:06:00,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 13:06:00,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:06:00" (1/1) ... [2022-12-13 13:06:00,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6075672a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:06:00, skipping insertion in model container [2022-12-13 13:06:00,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 01:06:00" (1/1) ... [2022-12-13 13:06:00,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 13:06:00,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 13:06:00,694 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_18c8e82c-efe6-4465-a462-dc6c0204118b/sv-benchmarks/c/heap-manipulation/tree-4.i[22626,22639] [2022-12-13 13:06:00,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:06:00,738 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 13:06:00,766 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_18c8e82c-efe6-4465-a462-dc6c0204118b/sv-benchmarks/c/heap-manipulation/tree-4.i[22626,22639] [2022-12-13 13:06:00,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 13:06:00,798 INFO L208 MainTranslator]: Completed translation [2022-12-13 13:06:00,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:06:00 WrapperNode [2022-12-13 13:06:00,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 13:06:00,799 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 13:06:00,799 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 13:06:00,799 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 13:06:00,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:06:00" (1/1) ... [2022-12-13 13:06:00,820 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:06:00" (1/1) ... [2022-12-13 13:06:00,838 INFO L138 Inliner]: procedures = 125, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 145 [2022-12-13 13:06:00,839 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 13:06:00,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 13:06:00,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 13:06:00,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 13:06:00,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:06:00" (1/1) ... [2022-12-13 13:06:00,847 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:06:00" (1/1) ... [2022-12-13 13:06:00,851 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:06:00" (1/1) ... [2022-12-13 13:06:00,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:06:00" (1/1) ... [2022-12-13 13:06:00,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:06:00" (1/1) ... [2022-12-13 13:06:00,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:06:00" (1/1) ... [2022-12-13 13:06:00,868 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:06:00" (1/1) ... [2022-12-13 13:06:00,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:06:00" (1/1) ... [2022-12-13 13:06:00,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 13:06:00,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 13:06:00,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 13:06:00,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 13:06:00,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:06:00" (1/1) ... [2022-12-13 13:06:00,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 13:06:00,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 13:06:00,898 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 13:06:00,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 13:06:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-12-13 13:06:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-12-13 13:06:00,928 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-12-13 13:06:00,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 13:06:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 13:06:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 13:06:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 13:06:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 13:06:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-12-13 13:06:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-13 13:06:00,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 13:06:00,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 13:06:01,031 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 13:06:01,033 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 13:06:01,759 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 13:06:01,765 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 13:06:01,765 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-12-13 13:06:01,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:06:01 BoogieIcfgContainer [2022-12-13 13:06:01,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 13:06:01,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 13:06:01,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 13:06:01,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 13:06:01,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 01:06:00" (1/3) ... [2022-12-13 13:06:01,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114d8b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:06:01, skipping insertion in model container [2022-12-13 13:06:01,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 01:06:00" (2/3) ... [2022-12-13 13:06:01,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114d8b5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 01:06:01, skipping insertion in model container [2022-12-13 13:06:01,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 01:06:01" (3/3) ... [2022-12-13 13:06:01,776 INFO L112 eAbstractionObserver]: Analyzing ICFG tree-4.i [2022-12-13 13:06:01,795 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 13:06:01,795 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 13:06:01,833 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 13:06:01,837 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;@6da04e18, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 13:06:01,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 13:06:01,841 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 39 states have (on average 1.7435897435897436) internal successors, (68), 43 states have internal predecessors, (68), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 13:06:01,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 13:06:01,846 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:06:01,846 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:06:01,847 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:06:01,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:06:01,850 INFO L85 PathProgramCache]: Analyzing trace with hash -698675410, now seen corresponding path program 1 times [2022-12-13 13:06:01,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:06:01,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717159095] [2022-12-13 13:06:01,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:06:01,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:06:01,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:06:01,861 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:06:01,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 13:06:02,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:06:02,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 13:06:02,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:06:02,033 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 13:06:02,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:06:02,034 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:06:02,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717159095] [2022-12-13 13:06:02,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717159095] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:06:02,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:06:02,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 13:06:02,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12100982] [2022-12-13 13:06:02,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:06:02,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 13:06:02,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:06:02,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 13:06:02,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:06:02,060 INFO L87 Difference]: Start difference. First operand has 45 states, 39 states have (on average 1.7435897435897436) internal successors, (68), 43 states have internal predecessors, (68), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:06:02,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:06:02,077 INFO L93 Difference]: Finished difference Result 86 states and 145 transitions. [2022-12-13 13:06:02,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 13:06:02,078 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-13 13:06:02,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:06:02,083 INFO L225 Difference]: With dead ends: 86 [2022-12-13 13:06:02,083 INFO L226 Difference]: Without dead ends: 30 [2022-12-13 13:06:02,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 13:06:02,087 INFO L413 NwaCegarLoop]: 55 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, 55 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 13:06:02,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 13:06:02,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-12-13 13:06:02,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-12-13 13:06:02,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 26 states have (on average 1.3076923076923077) internal successors, (34), 28 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:06:02,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2022-12-13 13:06:02,110 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 11 [2022-12-13 13:06:02,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:06:02,110 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2022-12-13 13:06:02,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:06:02,110 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2022-12-13 13:06:02,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 13:06:02,111 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:06:02,111 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:06:02,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 13:06:02,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:06:02,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:06:02,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:06:02,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1871281309, now seen corresponding path program 1 times [2022-12-13 13:06:02,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:06:02,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140260467] [2022-12-13 13:06:02,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:06:02,319 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:06:02,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:06:02,322 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:06:02,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 13:06:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:06:02,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 13:06:02,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:06:02,532 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 13:06:02,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:06:02,533 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:06:02,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140260467] [2022-12-13 13:06:02,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140260467] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:06:02,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:06:02,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:06:02,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384214677] [2022-12-13 13:06:02,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:06:02,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:06:02,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:06:02,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:06:02,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:06:02,536 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:06:03,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:06:03,268 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2022-12-13 13:06:03,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:06:03,276 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-13 13:06:03,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:06:03,276 INFO L225 Difference]: With dead ends: 55 [2022-12-13 13:06:03,276 INFO L226 Difference]: Without dead ends: 33 [2022-12-13 13:06:03,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 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 13:06:03,277 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 20 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 13:06:03,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 42 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 13:06:03,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-12-13 13:06:03,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-12-13 13:06:03,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:06:03,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2022-12-13 13:06:03,282 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 11 [2022-12-13 13:06:03,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:06:03,283 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2022-12-13 13:06:03,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:06:03,283 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2022-12-13 13:06:03,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 13:06:03,283 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:06:03,283 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:06:03,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 13:06:03,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:06:03,485 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:06:03,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:06:03,487 INFO L85 PathProgramCache]: Analyzing trace with hash 1614339361, now seen corresponding path program 1 times [2022-12-13 13:06:03,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:06:03,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777688617] [2022-12-13 13:06:03,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:06:03,489 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:06:03,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:06:03,492 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:06:03,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 13:06:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:06:03,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 13:06:03,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:06:03,647 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 13:06:03,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:06:03,647 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:06:03,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777688617] [2022-12-13 13:06:03,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777688617] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:06:03,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:06:03,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 13:06:03,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149458634] [2022-12-13 13:06:03,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:06:03,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 13:06:03,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:06:03,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 13:06:03,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 13:06:03,650 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:06:03,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:06:03,760 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2022-12-13 13:06:03,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 13:06:03,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-13 13:06:03,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:06:03,761 INFO L225 Difference]: With dead ends: 70 [2022-12-13 13:06:03,761 INFO L226 Difference]: Without dead ends: 36 [2022-12-13 13:06:03,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:06:03,762 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 7 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 13:06:03,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 127 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 13:06:03,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-12-13 13:06:03,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-12-13 13:06:03,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 33 states have internal predecessors, (39), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:06:03,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2022-12-13 13:06:03,767 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 11 [2022-12-13 13:06:03,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:06:03,767 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2022-12-13 13:06:03,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:06:03,768 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2022-12-13 13:06:03,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-12-13 13:06:03,768 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:06:03,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:06:03,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 13:06:03,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:06:03,970 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:06:03,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:06:03,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1107277079, now seen corresponding path program 1 times [2022-12-13 13:06:03,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:06:03,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2130720109] [2022-12-13 13:06:03,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:06:03,974 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:06:03,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:06:03,977 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:06:03,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 13:06:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:06:04,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 13:06:04,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:06:04,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 13:06:04,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:06:04,135 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:06:04,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2130720109] [2022-12-13 13:06:04,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2130720109] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:06:04,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:06:04,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 13:06:04,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562929983] [2022-12-13 13:06:04,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:06:04,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 13:06:04,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:06:04,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 13:06:04,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 13:06:04,137 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:06:05,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:06:05,773 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2022-12-13 13:06:05,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 13:06:05,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-12-13 13:06:05,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:06:05,774 INFO L225 Difference]: With dead ends: 57 [2022-12-13 13:06:05,774 INFO L226 Difference]: Without dead ends: 37 [2022-12-13 13:06:05,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 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 13:06:05,775 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 13:06:05,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 52 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 13:06:05,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-12-13 13:06:05,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2022-12-13 13:06:05,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 33 states have internal predecessors, (38), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:06:05,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2022-12-13 13:06:05,779 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 16 [2022-12-13 13:06:05,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:06:05,779 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2022-12-13 13:06:05,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:06:05,779 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2022-12-13 13:06:05,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 13:06:05,780 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:06:05,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:06:05,793 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 13:06:05,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:06:05,982 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:06:05,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:06:05,983 INFO L85 PathProgramCache]: Analyzing trace with hash 481590258, now seen corresponding path program 1 times [2022-12-13 13:06:05,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:06:05,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142937103] [2022-12-13 13:06:05,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:06:05,985 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:06:05,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:06:05,989 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:06:05,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 13:06:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:06:06,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 13:06:06,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:06:06,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 13:06:06,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 13:06:06,301 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 13:06:06,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142937103] [2022-12-13 13:06:06,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142937103] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 13:06:06,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 13:06:06,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 13:06:06,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082032704] [2022-12-13 13:06:06,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 13:06:06,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 13:06:06,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 13:06:06,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 13:06:06,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 13:06:06,303 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:06:08,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 13:06:08,792 INFO L93 Difference]: Finished difference Result 77 states and 92 transitions. [2022-12-13 13:06:08,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 13:06:08,792 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-12-13 13:06:08,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 13:06:08,793 INFO L225 Difference]: With dead ends: 77 [2022-12-13 13:06:08,793 INFO L226 Difference]: Without dead ends: 48 [2022-12-13 13:06:08,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-13 13:06:08,794 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 107 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-12-13 13:06:08,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 73 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-12-13 13:06:08,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-12-13 13:06:08,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2022-12-13 13:06:08,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 32 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:06:08,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-12-13 13:06:08,799 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 19 [2022-12-13 13:06:08,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 13:06:08,799 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-12-13 13:06:08,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 13:06:08,799 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-12-13 13:06:08,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-13 13:06:08,799 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 13:06:08,799 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 13:06:08,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-13 13:06:09,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:06:09,001 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting failErr0ASSERT_VIOLATIONERROR_FUNCTION === [failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 13:06:09,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 13:06:09,002 INFO L85 PathProgramCache]: Analyzing trace with hash -342395699, now seen corresponding path program 1 times [2022-12-13 13:06:09,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 13:06:09,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246693644] [2022-12-13 13:06:09,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 13:06:09,003 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 13:06:09,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 13:06:09,004 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 13:06:09,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_18c8e82c-efe6-4465-a462-dc6c0204118b/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 13:06:09,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 13:06:09,564 WARN L261 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 187 conjunts are in the unsatisfiable core [2022-12-13 13:06:09,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 13:06:09,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-12-13 13:06:09,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:06:09,699 INFO L321 Elim1Store]: treesize reduction 6, result has 57.1 percent of original size [2022-12-13 13:06:09,699 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2022-12-13 13:06:09,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-12-13 13:06:10,504 INFO L321 Elim1Store]: treesize reduction 152, result has 10.1 percent of original size [2022-12-13 13:06:10,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 8 new quantified variables, introduced 7 case distinctions, treesize of input 5356 treesize of output 3772 [2022-12-13 13:06:10,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:06:13,127 INFO L321 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2022-12-13 13:06:13,128 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 5 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 3025 treesize of output 2526 [2022-12-13 13:06:13,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:06:13,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:06:13,277 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:06:13,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:06:13,402 INFO L217 Elim1Store]: Index analysis took 189 ms [2022-12-13 13:06:13,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:07:04,684 WARN L233 SmtUtils]: Spent 51.23s on a formula simplification. DAG size of input: 53 DAG size of output: 44 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 13:07:04,685 INFO L321 Elim1Store]: treesize reduction 189, result has 49.7 percent of original size [2022-12-13 13:07:04,685 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 7 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 3 case distinctions, treesize of input 1828 treesize of output 3031 [2022-12-13 13:07:06,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:07:10,498 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 154 [2022-12-13 13:07:10,654 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-13 13:07:10,709 INFO L217 Elim1Store]: Index analysis took 139 ms [2022-12-13 13:08:52,872 WARN L233 SmtUtils]: Spent 1.70m on a formula simplification. DAG size of input: 122 DAG size of output: 33 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-12-13 13:08:52,872 INFO L321 Elim1Store]: treesize reduction 514, result has 10.9 percent of original size [2022-12-13 13:08:52,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 6 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 5377 treesize of output 4766 [2022-12-13 13:08:57,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 13:08:57,245 INFO L217 Elim1Store]: Index analysis took 764 ms [2022-12-13 13:08:59,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1099 treesize of output 1073