./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_init7_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_init7_ground-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa --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 095ff128d46790285bc3a18356d3bb4884a680aceaaaa262887ebe8922b6a30f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:53:24,064 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:53:24,066 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:53:24,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:53:24,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:53:24,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:53:24,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:53:24,102 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:53:24,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:53:24,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:53:24,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:53:24,108 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:53:24,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:53:24,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:53:24,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:53:24,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:53:24,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:53:24,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:53:24,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:53:24,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:53:24,120 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:53:24,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:53:24,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:53:24,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:53:24,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:53:24,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:53:24,128 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:53:24,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:53:24,129 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:53:24,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:53:24,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:53:24,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:53:24,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:53:24,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:53:24,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:53:24,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:53:24,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:53:24,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:53:24,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:53:24,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:53:24,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:53:24,137 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:53:24,153 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:53:24,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:53:24,153 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:53:24,153 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:53:24,154 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:53:24,154 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:53:24,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:53:24,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:53:24,154 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:53:24,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:53:24,155 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:53:24,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:53:24,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:53:24,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:53:24,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:53:24,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:53:24,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:53:24,155 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:53:24,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:53:24,156 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:53:24,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:53:24,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:53:24,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:53:24,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:53:24,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:53:24,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:53:24,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:53:24,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:53:24,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:53:24,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:53:24,157 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:53:24,157 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:53:24,157 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:53:24,157 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:53:24,157 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 095ff128d46790285bc3a18356d3bb4884a680aceaaaa262887ebe8922b6a30f [2021-12-06 22:53:24,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:53:24,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:53:24,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:53:24,344 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:53:24,345 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:53:24,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-examples/standard_init7_ground-2.i [2021-12-06 22:53:24,397 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/data/85d745816/72a835010f7b4bf2a6c7c7b0e4372035/FLAG0d422a35a [2021-12-06 22:53:24,766 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:53:24,766 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/sv-benchmarks/c/array-examples/standard_init7_ground-2.i [2021-12-06 22:53:24,771 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/data/85d745816/72a835010f7b4bf2a6c7c7b0e4372035/FLAG0d422a35a [2021-12-06 22:53:24,780 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/data/85d745816/72a835010f7b4bf2a6c7c7b0e4372035 [2021-12-06 22:53:24,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:53:24,783 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:53:24,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:53:24,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:53:24,787 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:53:24,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:53:24" (1/1) ... [2021-12-06 22:53:24,788 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4315b6bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:53:24, skipping insertion in model container [2021-12-06 22:53:24,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:53:24" (1/1) ... [2021-12-06 22:53:24,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:53:24,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:53:24,918 WARN L230 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_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/sv-benchmarks/c/array-examples/standard_init7_ground-2.i[816,829] [2021-12-06 22:53:24,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:53:24,938 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:53:24,949 WARN L230 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_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/sv-benchmarks/c/array-examples/standard_init7_ground-2.i[816,829] [2021-12-06 22:53:24,956 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:53:24,967 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:53:24,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:53:24 WrapperNode [2021-12-06 22:53:24,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:53:24,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:53:24,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:53:24,969 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:53:24,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:53:24" (1/1) ... [2021-12-06 22:53:24,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:53:24" (1/1) ... [2021-12-06 22:53:24,992 INFO L137 Inliner]: procedures = 15, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 82 [2021-12-06 22:53:24,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:53:24,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:53:24,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:53:24,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:53:24,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:53:24" (1/1) ... [2021-12-06 22:53:24,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:53:24" (1/1) ... [2021-12-06 22:53:25,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:53:24" (1/1) ... [2021-12-06 22:53:25,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:53:24" (1/1) ... [2021-12-06 22:53:25,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:53:24" (1/1) ... [2021-12-06 22:53:25,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:53:24" (1/1) ... [2021-12-06 22:53:25,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:53:24" (1/1) ... [2021-12-06 22:53:25,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:53:25,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:53:25,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:53:25,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:53:25,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:53:24" (1/1) ... [2021-12-06 22:53:25,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:53:25,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:53:25,037 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:53:25,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:53:25,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:53:25,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:53:25,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 22:53:25,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 22:53:25,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:53:25,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:53:25,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 22:53:25,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 22:53:25,113 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:53:25,114 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:53:25,212 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:53:25,218 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:53:25,218 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-12-06 22:53:25,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:53:25 BoogieIcfgContainer [2021-12-06 22:53:25,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:53:25,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:53:25,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:53:25,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:53:25,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:53:24" (1/3) ... [2021-12-06 22:53:25,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e77340c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:53:25, skipping insertion in model container [2021-12-06 22:53:25,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:53:24" (2/3) ... [2021-12-06 22:53:25,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e77340c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:53:25, skipping insertion in model container [2021-12-06 22:53:25,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:53:25" (3/3) ... [2021-12-06 22:53:25,229 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init7_ground-2.i [2021-12-06 22:53:25,234 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:53:25,234 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:53:25,281 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:53:25,289 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:53:25,289 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:53:25,303 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.75) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:53:25,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-06 22:53:25,310 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:53:25,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:53:25,311 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:53:25,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:53:25,317 INFO L85 PathProgramCache]: Analyzing trace with hash -495328290, now seen corresponding path program 1 times [2021-12-06 22:53:25,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:53:25,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288710904] [2021-12-06 22:53:25,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:53:25,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:53:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:25,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:53:25,459 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:53:25,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288710904] [2021-12-06 22:53:25,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288710904] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:53:25,460 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:53:25,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 22:53:25,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821534217] [2021-12-06 22:53:25,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:53:25,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:53:25,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:53:25,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:53:25,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 22:53:25,490 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.75) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:53:25,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:53:25,540 INFO L93 Difference]: Finished difference Result 56 states and 100 transitions. [2021-12-06 22:53:25,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:53:25,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-06 22:53:25,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:53:25,548 INFO L225 Difference]: With dead ends: 56 [2021-12-06 22:53:25,549 INFO L226 Difference]: Without dead ends: 29 [2021-12-06 22:53:25,551 INFO L932 BasicCegarLoop]: 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 [2021-12-06 22:53:25,553 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:53:25,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:53:25,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-06 22:53:25,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-06 22:53:25,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:53:25,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2021-12-06 22:53:25,580 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 19 [2021-12-06 22:53:25,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:53:25,581 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2021-12-06 22:53:25,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:53:25,581 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2021-12-06 22:53:25,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-06 22:53:25,582 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:53:25,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:53:25,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:53:25,583 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:53:25,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:53:25,583 INFO L85 PathProgramCache]: Analyzing trace with hash 1838625458, now seen corresponding path program 1 times [2021-12-06 22:53:25,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:53:25,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146374608] [2021-12-06 22:53:25,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:53:25,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:53:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:25,627 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 22:53:25,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:53:25,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146374608] [2021-12-06 22:53:25,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146374608] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:53:25,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261353310] [2021-12-06 22:53:25,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:53:25,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:53:25,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:53:25,629 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:53:25,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:53:25,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:25,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:53:25,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:53:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 22:53:25,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:53:25,809 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-06 22:53:25,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261353310] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:53:25,810 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:53:25,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-06 22:53:25,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243924608] [2021-12-06 22:53:25,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:53:25,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:53:25,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:53:25,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:53:25,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:53:25,813 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:53:25,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:53:25,902 INFO L93 Difference]: Finished difference Result 75 states and 109 transitions. [2021-12-06 22:53:25,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:53:25,902 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-06 22:53:25,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:53:25,903 INFO L225 Difference]: With dead ends: 75 [2021-12-06 22:53:25,903 INFO L226 Difference]: Without dead ends: 50 [2021-12-06 22:53:25,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:53:25,905 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:53:25,906 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:53:25,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-12-06 22:53:25,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-12-06 22:53:25,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.163265306122449) internal successors, (57), 49 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:53:25,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2021-12-06 22:53:25,916 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 26 [2021-12-06 22:53:25,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:53:25,916 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2021-12-06 22:53:25,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:53:25,916 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2021-12-06 22:53:25,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-06 22:53:25,918 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:53:25,918 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:53:25,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:53:26,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-06 22:53:26,120 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:53:26,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:53:26,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1915847130, now seen corresponding path program 2 times [2021-12-06 22:53:26,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:53:26,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938042711] [2021-12-06 22:53:26,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:53:26,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:53:26,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:26,335 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 22:53:26,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:53:26,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938042711] [2021-12-06 22:53:26,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938042711] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:53:26,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915285530] [2021-12-06 22:53:26,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 22:53:26,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:53:26,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:53:26,337 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:53:26,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:53:26,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 22:53:26,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:53:26,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 22:53:26,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:53:26,452 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 22:53:26,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:53:26,530 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-06 22:53:26,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915285530] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:53:26,531 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:53:26,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-12-06 22:53:26,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957064150] [2021-12-06 22:53:26,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:53:26,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 22:53:26,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:53:26,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 22:53:26,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:53:26,533 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:53:26,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:53:26,656 INFO L93 Difference]: Finished difference Result 135 states and 190 transitions. [2021-12-06 22:53:26,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:53:26,657 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-12-06 22:53:26,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:53:26,658 INFO L225 Difference]: With dead ends: 135 [2021-12-06 22:53:26,658 INFO L226 Difference]: Without dead ends: 92 [2021-12-06 22:53:26,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:53:26,659 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:53:26,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 22:53:26,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-12-06 22:53:26,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-12-06 22:53:26,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.0879120879120878) internal successors, (99), 91 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:53:26,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2021-12-06 22:53:26,677 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 47 [2021-12-06 22:53:26,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:53:26,677 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2021-12-06 22:53:26,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:53:26,677 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2021-12-06 22:53:26,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-06 22:53:26,680 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:53:26,680 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:53:26,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 22:53:26,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:53:26,882 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:53:26,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:53:26,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1268791078, now seen corresponding path program 3 times [2021-12-06 22:53:26,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:53:26,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416829925] [2021-12-06 22:53:26,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:53:26,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:53:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:27,126 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2021-12-06 22:53:27,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:53:27,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416829925] [2021-12-06 22:53:27,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416829925] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:53:27,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089620130] [2021-12-06 22:53:27,127 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 22:53:27,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:53:27,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:53:27,128 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:53:27,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:53:32,763 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-06 22:53:32,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:53:32,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 22:53:32,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:53:32,857 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2021-12-06 22:53:32,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:53:33,007 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2021-12-06 22:53:33,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089620130] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:53:33,007 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:53:33,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-12-06 22:53:33,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327531649] [2021-12-06 22:53:33,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:53:33,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 22:53:33,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:53:33,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 22:53:33,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-12-06 22:53:33,010 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:53:33,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:53:33,281 INFO L93 Difference]: Finished difference Result 255 states and 352 transitions. [2021-12-06 22:53:33,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 22:53:33,282 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2021-12-06 22:53:33,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:53:33,283 INFO L225 Difference]: With dead ends: 255 [2021-12-06 22:53:33,283 INFO L226 Difference]: Without dead ends: 176 [2021-12-06 22:53:33,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-12-06 22:53:33,285 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:53:33,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 22:53:33,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-12-06 22:53:33,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-12-06 22:53:33,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.0457142857142858) internal successors, (183), 175 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:53:33,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 183 transitions. [2021-12-06 22:53:33,299 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 183 transitions. Word has length 89 [2021-12-06 22:53:33,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:53:33,299 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 183 transitions. [2021-12-06 22:53:33,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.96) internal successors, (74), 25 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:53:33,299 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 183 transitions. [2021-12-06 22:53:33,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-06 22:53:33,301 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:53:33,301 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:53:33,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:53:33,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:53:33,503 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:53:33,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:53:33,505 INFO L85 PathProgramCache]: Analyzing trace with hash 126801626, now seen corresponding path program 4 times [2021-12-06 22:53:33,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:53:33,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827849707] [2021-12-06 22:53:33,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:53:33,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:53:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:33,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2021-12-06 22:53:33,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:53:33,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827849707] [2021-12-06 22:53:33,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827849707] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:53:33,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663885836] [2021-12-06 22:53:33,920 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 22:53:33,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:53:33,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:53:33,921 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:53:33,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:53:34,118 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 22:53:34,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 22:53:34,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 1144 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-06 22:53:34,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:53:34,314 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2021-12-06 22:53:34,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:53:34,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2021-12-06 22:53:34,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [663885836] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 22:53:34,826 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 22:53:34,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2021-12-06 22:53:34,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833797611] [2021-12-06 22:53:34,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 22:53:34,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-06 22:53:34,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:53:34,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-06 22:53:34,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-12-06 22:53:34,829 INFO L87 Difference]: Start difference. First operand 176 states and 183 transitions. Second operand has 49 states, 49 states have (on average 1.489795918367347) internal successors, (73), 49 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:53:35,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:53:35,430 INFO L93 Difference]: Finished difference Result 495 states and 676 transitions. [2021-12-06 22:53:35,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-06 22:53:35,430 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.489795918367347) internal successors, (73), 49 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 173 [2021-12-06 22:53:35,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:53:35,432 INFO L225 Difference]: With dead ends: 495 [2021-12-06 22:53:35,432 INFO L226 Difference]: Without dead ends: 344 [2021-12-06 22:53:35,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-12-06 22:53:35,434 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 1089 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 1446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1089 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:53:35,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 1446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1089 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 22:53:35,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-12-06 22:53:35,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2021-12-06 22:53:35,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 1.0233236151603498) internal successors, (351), 343 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:53:35,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 351 transitions. [2021-12-06 22:53:35,454 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 351 transitions. Word has length 173 [2021-12-06 22:53:35,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:53:35,455 INFO L470 AbstractCegarLoop]: Abstraction has 344 states and 351 transitions. [2021-12-06 22:53:35,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.489795918367347) internal successors, (73), 49 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 22:53:35,455 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 351 transitions. [2021-12-06 22:53:35,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2021-12-06 22:53:35,460 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:53:35,460 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:53:35,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 22:53:35,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:53:35,662 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:53:35,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:53:35,663 INFO L85 PathProgramCache]: Analyzing trace with hash -866716966, now seen corresponding path program 5 times [2021-12-06 22:53:35,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:53:35,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503268598] [2021-12-06 22:53:35,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:53:35,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:53:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:36,505 INFO L134 CoverageAnalysis]: Checked inductivity of 7567 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 6486 trivial. 0 not checked. [2021-12-06 22:53:36,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:53:36,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503268598] [2021-12-06 22:53:36,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503268598] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:53:36,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642768980] [2021-12-06 22:53:36,506 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 22:53:36,506 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:53:36,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:53:36,507 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:53:36,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8431ba6f-9a7a-436c-bcc9-0b5a5c0d5892/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process