./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0 --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 45ff7b74faf4250f77b788e07275d725ea3dbcc73af0b2b0d64dcf5aa7f7b78a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:10:22,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:10:22,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:10:22,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:10:22,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:10:22,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:10:22,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:10:22,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:10:22,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:10:22,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:10:22,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:10:22,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:10:22,934 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:10:22,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:10:22,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:10:22,939 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:10:22,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:10:22,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:10:22,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:10:22,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:10:22,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:10:22,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:10:22,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:10:22,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:10:22,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:10:22,956 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:10:22,957 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:10:22,958 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:10:22,958 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:10:22,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:10:22,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:10:22,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:10:22,962 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:10:22,963 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:10:22,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:10:22,965 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:10:22,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:10:22,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:10:22,966 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:10:22,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:10:22,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:10:22,970 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-22 15:10:23,014 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:10:23,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:10:23,016 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:10:23,016 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:10:23,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:10:23,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:10:23,018 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:10:23,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:10:23,019 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:10:23,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:10:23,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:10:23,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:10:23,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 15:10:23,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:10:23,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 15:10:23,022 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:10:23,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 15:10:23,022 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:10:23,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 15:10:23,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:10:23,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:10:23,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:10:23,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:10:23,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:10:23,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:10:23,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 15:10:23,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:10:23,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:10:23,025 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 15:10:23,026 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 15:10:23,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 15:10:23,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:10:23,027 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_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45ff7b74faf4250f77b788e07275d725ea3dbcc73af0b2b0d64dcf5aa7f7b78a [2021-11-22 15:10:23,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:10:23,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:10:23,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:10:23,357 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:10:23,358 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:10:23,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c [2021-11-22 15:10:23,456 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/data/1695abb84/32f0af355b364cdcafb0719100a09ddc/FLAG7d4b9b1f1 [2021-11-22 15:10:23,934 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:10:23,935 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c [2021-11-22 15:10:23,941 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/data/1695abb84/32f0af355b364cdcafb0719100a09ddc/FLAG7d4b9b1f1 [2021-11-22 15:10:24,290 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/data/1695abb84/32f0af355b364cdcafb0719100a09ddc [2021-11-22 15:10:24,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:10:24,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:10:24,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:10:24,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:10:24,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:10:24,302 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:10:24" (1/1) ... [2021-11-22 15:10:24,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72db1d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:24, skipping insertion in model container [2021-11-22 15:10:24,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:10:24" (1/1) ... [2021-11-22 15:10:24,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:10:24,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:10:24,514 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_0702c1e8-5725-4e86-9af1-7578bcc6bc99/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c[526,539] [2021-11-22 15:10:24,544 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:10:24,554 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:10:24,580 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_0702c1e8-5725-4e86-9af1-7578bcc6bc99/sv-benchmarks/c/nla-digbench-scaling/hard2_valuebound1.c[526,539] [2021-11-22 15:10:24,602 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:10:24,618 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:10:24,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:24 WrapperNode [2021-11-22 15:10:24,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:10:24,620 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:10:24,620 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:10:24,621 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:10:24,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:24" (1/1) ... [2021-11-22 15:10:24,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:24" (1/1) ... [2021-11-22 15:10:24,669 INFO L137 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 91 [2021-11-22 15:10:24,669 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:10:24,670 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:10:24,670 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:10:24,671 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:10:24,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:24" (1/1) ... [2021-11-22 15:10:24,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:24" (1/1) ... [2021-11-22 15:10:24,693 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:24" (1/1) ... [2021-11-22 15:10:24,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:24" (1/1) ... [2021-11-22 15:10:24,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:24" (1/1) ... [2021-11-22 15:10:24,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:24" (1/1) ... [2021-11-22 15:10:24,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:24" (1/1) ... [2021-11-22 15:10:24,704 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:10:24,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:10:24,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:10:24,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:10:24,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:24" (1/1) ... [2021-11-22 15:10:24,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:10:24,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:10:24,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:10:24,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:10:24,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:10:24,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 15:10:24,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:10:24,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:10:24,879 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:10:24,880 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:10:25,044 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:10:25,051 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:10:25,051 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-22 15:10:25,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:10:25 BoogieIcfgContainer [2021-11-22 15:10:25,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:10:25,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:10:25,059 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:10:25,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:10:25,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:10:24" (1/3) ... [2021-11-22 15:10:25,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112986c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:10:25, skipping insertion in model container [2021-11-22 15:10:25,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:10:24" (2/3) ... [2021-11-22 15:10:25,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112986c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:10:25, skipping insertion in model container [2021-11-22 15:10:25,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:10:25" (3/3) ... [2021-11-22 15:10:25,075 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_valuebound1.c [2021-11-22 15:10:25,080 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:10:25,081 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-22 15:10:25,130 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:10:25,143 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 [2021-11-22 15:10:25,143 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-22 15:10:25,164 INFO L276 IsEmpty]: Start isEmpty. Operand has 41 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 40 states have internal predecessors, (55), 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) [2021-11-22 15:10:25,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:10:25,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:25,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:10:25,173 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:10:25,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:25,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-11-22 15:10:25,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:25,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623178223] [2021-11-22 15:10:25,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:25,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:25,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:25,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:25,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:25,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623178223] [2021-11-22 15:10:25,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623178223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:10:25,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:10:25,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 15:10:25,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137612544] [2021-11-22 15:10:25,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:10:25,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 15:10:25,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:25,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 15:10:25,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 15:10:25,495 INFO L87 Difference]: Start difference. First operand has 41 states, 33 states have (on average 1.6666666666666667) internal successors, (55), 40 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-22 15:10:25,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:25,537 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2021-11-22 15:10:25,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 15:10:25,540 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-11-22 15:10:25,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:25,549 INFO L225 Difference]: With dead ends: 79 [2021-11-22 15:10:25,550 INFO L226 Difference]: Without dead ends: 37 [2021-11-22 15:10:25,554 INFO L932 BasicCegarLoop]: 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 [2021-11-22 15:10:25,567 INFO L933 BasicCegarLoop]: 43 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, 43 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 [2021-11-22 15:10:25,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:10:25,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-22 15:10:25,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-11-22 15:10:25,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 30 states have (on average 1.3) internal successors, (39), 36 states have internal predecessors, (39), 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) [2021-11-22 15:10:25,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-11-22 15:10:25,607 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 7 [2021-11-22 15:10:25,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:25,608 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-11-22 15:10:25,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-11-22 15:10:25,608 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-11-22 15:10:25,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:10:25,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:25,609 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:10:25,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 15:10:25,611 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:10:25,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:25,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-11-22 15:10:25,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:25,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294887212] [2021-11-22 15:10:25,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:25,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:25,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:25,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294887212] [2021-11-22 15:10:25,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294887212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:10:25,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:10:25,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:10:25,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819700830] [2021-11-22 15:10:25,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:10:25,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:10:25,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:25,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:10:25,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:10:25,716 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-22 15:10:25,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:25,816 INFO L93 Difference]: Finished difference Result 57 states and 60 transitions. [2021-11-22 15:10:25,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:10:25,817 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-11-22 15:10:25,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:25,821 INFO L225 Difference]: With dead ends: 57 [2021-11-22 15:10:25,821 INFO L226 Difference]: Without dead ends: 55 [2021-11-22 15:10:25,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:10:25,824 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 43 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:10:25,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 61 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:10:25,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-22 15:10:25,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 35. [2021-11-22 15:10:25,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 34 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) [2021-11-22 15:10:25,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-11-22 15:10:25,838 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 7 [2021-11-22 15:10:25,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:25,838 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-11-22 15:10:25,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-11-22 15:10:25,839 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-11-22 15:10:25,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 15:10:25,839 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:25,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:10:25,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 15:10:25,840 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:10:25,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:25,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-11-22 15:10:25,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:25,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41827883] [2021-11-22 15:10:25,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:25,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:25,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:25,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:25,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41827883] [2021-11-22 15:10:25,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41827883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:10:25,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:10:25,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:10:25,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219408755] [2021-11-22 15:10:25,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:10:25,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:10:25,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:25,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:10:25,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:10:25,896 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:10:25,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:25,971 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2021-11-22 15:10:25,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:10:25,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 15:10:25,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:25,974 INFO L225 Difference]: With dead ends: 55 [2021-11-22 15:10:25,974 INFO L226 Difference]: Without dead ends: 53 [2021-11-22 15:10:25,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:10:25,986 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 38 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:10:25,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 55 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:10:25,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-22 15:10:25,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 33. [2021-11-22 15:10:25,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.25) internal successors, (35), 32 states have internal predecessors, (35), 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) [2021-11-22 15:10:26,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-11-22 15:10:26,001 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 9 [2021-11-22 15:10:26,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:26,002 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-11-22 15:10:26,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:10:26,005 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-11-22 15:10:26,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 15:10:26,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:26,006 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:10:26,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 15:10:26,008 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:10:26,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:26,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-11-22 15:10:26,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:26,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607513557] [2021-11-22 15:10:26,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:26,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:26,042 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:10:26,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416681219] [2021-11-22 15:10:26,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:26,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:10:26,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:10:26,054 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:10:26,077 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 15:10:26,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:26,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 15:10:26,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:10:26,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:26,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:10:26,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:26,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607513557] [2021-11-22 15:10:26,364 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:10:26,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416681219] [2021-11-22 15:10:26,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416681219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:10:26,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:10:26,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:10:26,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619414799] [2021-11-22 15:10:26,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:10:26,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:10:26,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:26,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:10:26,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:10:26,371 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-22 15:10:26,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:26,500 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2021-11-22 15:10:26,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:10:26,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-11-22 15:10:26,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:26,502 INFO L225 Difference]: With dead ends: 77 [2021-11-22 15:10:26,502 INFO L226 Difference]: Without dead ends: 54 [2021-11-22 15:10:26,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:10:26,504 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 21 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:10:26,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 65 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:10:26,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-22 15:10:26,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2021-11-22 15:10:26,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 48 states have internal predecessors, (53), 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) [2021-11-22 15:10:26,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2021-11-22 15:10:26,516 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 11 [2021-11-22 15:10:26,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:26,517 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2021-11-22 15:10:26,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-11-22 15:10:26,518 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2021-11-22 15:10:26,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-22 15:10:26,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:26,519 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:10:26,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-22 15:10:26,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:10:26,727 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:10:26,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:26,727 INFO L85 PathProgramCache]: Analyzing trace with hash 532786181, now seen corresponding path program 1 times [2021-11-22 15:10:26,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:26,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170672277] [2021-11-22 15:10:26,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:26,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:26,740 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:10:26,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [586857735] [2021-11-22 15:10:26,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:26,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:10:26,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:10:26,743 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:10:26,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 15:10:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:26,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 15:10:26,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:10:26,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:26,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:10:26,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:26,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170672277] [2021-11-22 15:10:26,940 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:10:26,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586857735] [2021-11-22 15:10:26,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586857735] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:10:26,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:10:26,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 15:10:26,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285859681] [2021-11-22 15:10:26,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:10:26,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:10:26,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:26,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:10:26,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:10:26,948 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:10:27,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:27,030 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2021-11-22 15:10:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:10:27,032 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-22 15:10:27,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:27,033 INFO L225 Difference]: With dead ends: 68 [2021-11-22 15:10:27,040 INFO L226 Difference]: Without dead ends: 56 [2021-11-22 15:10:27,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:10:27,041 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 20 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:10:27,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 49 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:10:27,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-22 15:10:27,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2021-11-22 15:10:27,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 49 states have internal predecessors, (55), 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) [2021-11-22 15:10:27,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2021-11-22 15:10:27,054 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 15 [2021-11-22 15:10:27,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:27,055 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2021-11-22 15:10:27,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:10:27,055 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2021-11-22 15:10:27,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-22 15:10:27,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:27,056 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:10:27,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:10:27,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:10:27,270 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:10:27,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:27,270 INFO L85 PathProgramCache]: Analyzing trace with hash 832660248, now seen corresponding path program 1 times [2021-11-22 15:10:27,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:27,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135552947] [2021-11-22 15:10:27,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:27,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:27,283 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:10:27,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [242559447] [2021-11-22 15:10:27,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:27,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:10:27,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:10:27,284 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:10:27,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 15:10:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:27,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 15:10:27,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:10:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:27,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:10:27,632 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-22 15:10:27,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:27,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135552947] [2021-11-22 15:10:27,633 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:10:27,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242559447] [2021-11-22 15:10:27,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242559447] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:10:27,634 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:10:27,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2021-11-22 15:10:27,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685451600] [2021-11-22 15:10:27,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:10:27,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:10:27,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:27,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:10:27,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:10:27,636 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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) [2021-11-22 15:10:29,759 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-22 15:10:29,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:29,933 INFO L93 Difference]: Finished difference Result 130 states and 150 transitions. [2021-11-22 15:10:29,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:10:29,934 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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 [2021-11-22 15:10:29,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:29,935 INFO L225 Difference]: With dead ends: 130 [2021-11-22 15:10:29,935 INFO L226 Difference]: Without dead ends: 90 [2021-11-22 15:10:29,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:10:29,937 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 51 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 21 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:10:29,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 91 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 78 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2021-11-22 15:10:29,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-11-22 15:10:29,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 75. [2021-11-22 15:10:29,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 71 states have (on average 1.1549295774647887) internal successors, (82), 74 states have internal predecessors, (82), 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) [2021-11-22 15:10:29,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 82 transitions. [2021-11-22 15:10:29,964 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 82 transitions. Word has length 19 [2021-11-22 15:10:29,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:29,964 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 82 transitions. [2021-11-22 15:10:29,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 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) [2021-11-22 15:10:29,965 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 82 transitions. [2021-11-22 15:10:29,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-11-22 15:10:29,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:29,966 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:10:30,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:10:30,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:10:30,194 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:10:30,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:30,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1120056438, now seen corresponding path program 1 times [2021-11-22 15:10:30,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:30,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646544124] [2021-11-22 15:10:30,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:30,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:30,205 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:10:30,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124535064] [2021-11-22 15:10:30,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:30,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:10:30,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:10:30,206 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:10:30,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 15:10:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:30,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-22 15:10:30,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:10:30,699 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:30,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:10:32,555 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:32,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:32,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646544124] [2021-11-22 15:10:32,556 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:10:32,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124535064] [2021-11-22 15:10:32,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124535064] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 15:10:32,556 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-22 15:10:32,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-11-22 15:10:32,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834304836] [2021-11-22 15:10:32,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-22 15:10:32,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:10:32,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:32,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:10:32,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:10:32,560 INFO L87 Difference]: Start difference. First operand 75 states and 82 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 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) [2021-11-22 15:10:39,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:39,077 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2021-11-22 15:10:39,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-22 15:10:39,078 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 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 30 [2021-11-22 15:10:39,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:39,081 INFO L225 Difference]: With dead ends: 134 [2021-11-22 15:10:39,081 INFO L226 Difference]: Without dead ends: 130 [2021-11-22 15:10:39,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-11-22 15:10:39,082 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 130 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:10:39,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 120 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-22 15:10:39,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-22 15:10:39,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 93. [2021-11-22 15:10:39,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 89 states have (on average 1.1685393258426966) internal successors, (104), 92 states have internal predecessors, (104), 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) [2021-11-22 15:10:39,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 104 transitions. [2021-11-22 15:10:39,101 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 104 transitions. Word has length 30 [2021-11-22 15:10:39,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:39,102 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 104 transitions. [2021-11-22 15:10:39,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 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) [2021-11-22 15:10:39,102 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 104 transitions. [2021-11-22 15:10:39,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-22 15:10:39,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:39,104 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:10:39,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:10:39,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-22 15:10:39,330 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:10:39,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:39,330 INFO L85 PathProgramCache]: Analyzing trace with hash -911696120, now seen corresponding path program 1 times [2021-11-22 15:10:39,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:39,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691398567] [2021-11-22 15:10:39,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:39,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:39,341 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:10:39,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442626554] [2021-11-22 15:10:39,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:39,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:10:39,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:10:39,349 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:10:39,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-22 15:10:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:39,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-22 15:10:39,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:10:40,113 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:40,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:10:40,345 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 15:10:40,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:40,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691398567] [2021-11-22 15:10:40,345 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:10:40,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442626554] [2021-11-22 15:10:40,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442626554] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-22 15:10:40,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 15:10:40,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 16 [2021-11-22 15:10:40,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204921767] [2021-11-22 15:10:40,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:10:40,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:10:40,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:40,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:10:40,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2021-11-22 15:10:40,347 INFO L87 Difference]: Start difference. First operand 93 states and 104 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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) [2021-11-22 15:10:40,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:40,576 INFO L93 Difference]: Finished difference Result 93 states and 104 transitions. [2021-11-22 15:10:40,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:10:40,578 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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 36 [2021-11-22 15:10:40,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:40,579 INFO L225 Difference]: With dead ends: 93 [2021-11-22 15:10:40,579 INFO L226 Difference]: Without dead ends: 76 [2021-11-22 15:10:40,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2021-11-22 15:10:40,584 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 70 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:10:40,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 44 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:10:40,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-11-22 15:10:40,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 63. [2021-11-22 15:10:40,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 60 states have (on average 1.1666666666666667) internal successors, (70), 62 states have internal predecessors, (70), 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) [2021-11-22 15:10:40,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2021-11-22 15:10:40,613 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 36 [2021-11-22 15:10:40,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:40,614 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2021-11-22 15:10:40,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 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) [2021-11-22 15:10:40,615 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2021-11-22 15:10:40,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-22 15:10:40,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:40,616 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:10:40,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-22 15:10:40,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:10:40,817 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:10:40,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:40,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1483165376, now seen corresponding path program 1 times [2021-11-22 15:10:40,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:40,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305396140] [2021-11-22 15:10:40,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:40,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:40,827 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:10:40,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400821647] [2021-11-22 15:10:40,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:40,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:10:40,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:10:40,830 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:10:40,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-22 15:10:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:10:40,877 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:10:40,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:10:41,015 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:10:41,016 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:10:41,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:41,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305396140] [2021-11-22 15:10:41,017 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:10:41,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400821647] [2021-11-22 15:10:41,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400821647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:10:41,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:10:41,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 15:10:41,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289230511] [2021-11-22 15:10:41,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:10:41,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:10:41,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:41,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:10:41,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:10:41,019 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2021-11-22 15:10:41,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:41,059 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2021-11-22 15:10:41,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:10:41,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 39 [2021-11-22 15:10:41,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:41,061 INFO L225 Difference]: With dead ends: 71 [2021-11-22 15:10:41,061 INFO L226 Difference]: Without dead ends: 65 [2021-11-22 15:10:41,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:10:41,062 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 43 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:10:41,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 87 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:10:41,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-22 15:10:41,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-11-22 15:10:41,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 62 states have (on average 1.1451612903225807) internal successors, (71), 64 states have internal predecessors, (71), 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) [2021-11-22 15:10:41,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 71 transitions. [2021-11-22 15:10:41,075 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 71 transitions. Word has length 39 [2021-11-22 15:10:41,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:41,075 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 71 transitions. [2021-11-22 15:10:41,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2021-11-22 15:10:41,076 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 71 transitions. [2021-11-22 15:10:41,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-22 15:10:41,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:10:41,078 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:10:41,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-22 15:10:41,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:10:41,306 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-22 15:10:41,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:10:41,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1054840587, now seen corresponding path program 2 times [2021-11-22 15:10:41,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 15:10:41,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123284963] [2021-11-22 15:10:41,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:10:41,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 15:10:41,321 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 15:10:41,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928207130] [2021-11-22 15:10:41,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 15:10:41,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:10:41,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:10:41,327 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:10:41,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-22 15:10:41,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-22 15:10:41,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-22 15:10:41,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 15:10:41,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:10:41,574 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-22 15:10:41,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 15:10:41,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 15:10:41,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123284963] [2021-11-22 15:10:41,575 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 15:10:41,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928207130] [2021-11-22 15:10:41,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928207130] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 15:10:41,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:10:41,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 15:10:41,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262706547] [2021-11-22 15:10:41,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 15:10:41,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:10:41,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 15:10:41,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:10:41,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:10:41,582 INFO L87 Difference]: Start difference. First operand 65 states and 71 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 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) [2021-11-22 15:10:41,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:10:41,665 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2021-11-22 15:10:41,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:10:41,666 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 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 45 [2021-11-22 15:10:41,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:10:41,667 INFO L225 Difference]: With dead ends: 65 [2021-11-22 15:10:41,667 INFO L226 Difference]: Without dead ends: 0 [2021-11-22 15:10:41,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:10:41,668 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 17 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:10:41,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 20 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:10:41,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-22 15:10:41,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-22 15:10:41,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-11-22 15:10:41,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-22 15:10:41,670 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2021-11-22 15:10:41,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:10:41,671 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-22 15:10:41,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 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) [2021-11-22 15:10:41,671 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-22 15:10:41,671 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-22 15:10:41,674 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2021-11-22 15:10:41,674 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2021-11-22 15:10:41,675 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2021-11-22 15:10:41,675 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2021-11-22 15:10:41,675 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2021-11-22 15:10:41,675 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2021-11-22 15:10:41,676 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2021-11-22 15:10:41,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-22 15:10:41,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:10:41,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-22 15:10:42,479 INFO L861 garLoopResultBuilder]: At program point L60(lines 22 61) the Hoare annotation is: true [2021-11-22 15:10:42,479 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-22 15:10:42,479 INFO L858 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed. [2021-11-22 15:10:42,479 INFO L858 garLoopResultBuilder]: For program point L52-2(lines 22 61) no Hoare annotation was computed. [2021-11-22 15:10:42,479 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2021-11-22 15:10:42,479 INFO L858 garLoopResultBuilder]: For program point L44-1(lines 44 56) no Hoare annotation was computed. [2021-11-22 15:10:42,480 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-22 15:10:42,480 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-22 15:10:42,480 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-22 15:10:42,480 INFO L858 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-11-22 15:10:42,480 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-22 15:10:42,480 INFO L858 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2021-11-22 15:10:42,481 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-22 15:10:42,481 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-22 15:10:42,481 INFO L858 garLoopResultBuilder]: For program point L48(line 48) no Hoare annotation was computed. [2021-11-22 15:10:42,481 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-11-22 15:10:42,481 INFO L854 garLoopResultBuilder]: At program point L15-2(lines 14 20) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|)) (.cse2 (<= |ULTIMATE.start_main_~A~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse4 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse5 (<= 0 |ULTIMATE.start_main_~A~0#1|))) (or (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse1 .cse2 .cse3 (= (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~d~0#1|)) |ULTIMATE.start_main_~A~0#1|) .cse4 .cse5) (and .cse0 (= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~B~0#1|)) (= 2 |ULTIMATE.start_main_~p~0#1|) .cse1 .cse2 (= |ULTIMATE.start_main_~q~0#1| 0) .cse3 .cse4 .cse5))) [2021-11-22 15:10:42,482 INFO L858 garLoopResultBuilder]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2021-11-22 15:10:42,482 INFO L854 garLoopResultBuilder]: At program point L15-5(lines 14 20) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|)) (.cse2 (<= |ULTIMATE.start_main_~A~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse4 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse5 (<= 0 |ULTIMATE.start_main_~A~0#1|))) (or (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse1 .cse2 .cse3 (= (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~d~0#1|)) |ULTIMATE.start_main_~A~0#1|) .cse4 .cse5) (and .cse0 (= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~B~0#1|)) (= 2 |ULTIMATE.start_main_~p~0#1|) .cse1 .cse2 (= |ULTIMATE.start_main_~q~0#1| 0) .cse3 .cse4 .cse5))) [2021-11-22 15:10:42,482 INFO L858 garLoopResultBuilder]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2021-11-22 15:10:42,482 INFO L854 garLoopResultBuilder]: At program point L15-8(lines 14 20) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|)) (.cse2 (<= |ULTIMATE.start_main_~A~0#1| 1)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse4 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse5 (<= 0 |ULTIMATE.start_main_~A~0#1|))) (or (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse1 .cse2 .cse3 (= (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~d~0#1|)) |ULTIMATE.start_main_~A~0#1|) .cse4 .cse5) (and .cse0 (= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~B~0#1|)) (= 2 |ULTIMATE.start_main_~p~0#1|) .cse1 .cse2 (= |ULTIMATE.start_main_~q~0#1| 0) .cse3 .cse4 .cse5))) [2021-11-22 15:10:42,483 INFO L858 garLoopResultBuilder]: For program point L15-9(lines 15 18) no Hoare annotation was computed. [2021-11-22 15:10:42,483 INFO L854 garLoopResultBuilder]: At program point L15-11(lines 14 20) the Hoare annotation is: (let ((.cse0 (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse1 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and (= (+ |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~r~0#1|) |ULTIMATE.start_main_~A~0#1|) .cse0 (= |ULTIMATE.start_main_~q~0#1| 1) (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~B~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~B~0#1|) |ULTIMATE.start_main_~r~0#1|)) (= (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~d~0#1|)) |ULTIMATE.start_main_~A~0#1|) .cse1) (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse0 .cse2 .cse3 .cse1) (and (= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~B~0#1|)) (= 2 |ULTIMATE.start_main_~p~0#1|) .cse0 .cse2 .cse3 .cse1))) [2021-11-22 15:10:42,483 INFO L858 garLoopResultBuilder]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2021-11-22 15:10:42,483 INFO L854 garLoopResultBuilder]: At program point L15-14(lines 14 20) the Hoare annotation is: (let ((.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse0 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|)) (.cse1 (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|)) (.cse4 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and (= |ULTIMATE.start_main_~p~0#1| 1) .cse0 .cse1 .cse2 .cse3 .cse4) (and (= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~B~0#1|)) (= 2 |ULTIMATE.start_main_~p~0#1|) .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 (= |ULTIMATE.start_main_~q~0#1| 1) (= (+ |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~d~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~B~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~B~0#1|) |ULTIMATE.start_main_~r~0#1|)) (= (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~d~0#1|)) |ULTIMATE.start_main_~A~0#1|) .cse4))) [2021-11-22 15:10:42,483 INFO L858 garLoopResultBuilder]: For program point L15-15(lines 15 18) no Hoare annotation was computed. [2021-11-22 15:10:42,484 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-22 15:10:42,484 INFO L854 garLoopResultBuilder]: At program point L15-17(lines 14 20) the Hoare annotation is: (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) (not (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0)) (= |ULTIMATE.start_main_~B~0#1| 1)) [2021-11-22 15:10:42,484 INFO L858 garLoopResultBuilder]: For program point L15-18(lines 15 18) no Hoare annotation was computed. [2021-11-22 15:10:42,484 INFO L861 garLoopResultBuilder]: At program point L15-20(lines 14 20) the Hoare annotation is: true [2021-11-22 15:10:42,484 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-22 15:10:42,484 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-11-22 15:10:42,485 INFO L858 garLoopResultBuilder]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2021-11-22 15:10:42,485 INFO L858 garLoopResultBuilder]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2021-11-22 15:10:42,485 INFO L858 garLoopResultBuilder]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2021-11-22 15:10:42,485 INFO L858 garLoopResultBuilder]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2021-11-22 15:10:42,485 INFO L858 garLoopResultBuilder]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2021-11-22 15:10:42,485 INFO L858 garLoopResultBuilder]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2021-11-22 15:10:42,486 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-22 15:10:42,486 INFO L854 garLoopResultBuilder]: At program point L34-2(lines 34 42) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~A~0#1| 1)) (.cse2 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse3 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse4 (<= 0 |ULTIMATE.start_main_~A~0#1|))) (or (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~d~0#1|) .cse1 .cse2 (= (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~d~0#1|)) |ULTIMATE.start_main_~A~0#1|) .cse3 .cse4) (and .cse0 (= |ULTIMATE.start_main_~d~0#1| (* 2 |ULTIMATE.start_main_~B~0#1|)) (= 2 |ULTIMATE.start_main_~p~0#1|) (<= 1 |ULTIMATE.start___VERIFIER_assert_~cond#1|) .cse1 (= |ULTIMATE.start_main_~q~0#1| 0) .cse2 .cse3 .cse4))) [2021-11-22 15:10:42,486 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-22 15:10:42,490 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:10:42,491 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-22 15:10:42,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 03:10:42 BoogieIcfgContainer [2021-11-22 15:10:42,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-22 15:10:42,515 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-22 15:10:42,516 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-22 15:10:42,516 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-22 15:10:42,516 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:10:25" (3/4) ... [2021-11-22 15:10:42,519 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-22 15:10:42,531 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-11-22 15:10:42,531 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-22 15:10:42,532 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-22 15:10:42,532 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-22 15:10:42,573 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/witness.graphml [2021-11-22 15:10:42,574 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-22 15:10:42,574 INFO L158 Benchmark]: Toolchain (without parser) took 18280.71ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 65.0MB in the beginning and 63.2MB in the end (delta: 1.8MB). Peak memory consumption was 24.9MB. Max. memory is 16.1GB. [2021-11-22 15:10:42,575 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 98.6MB. Free memory is still 51.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:10:42,575 INFO L158 Benchmark]: CACSL2BoogieTranslator took 324.22ms. Allocated memory is still 98.6MB. Free memory was 64.8MB in the beginning and 73.8MB in the end (delta: -9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 15:10:42,576 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.18ms. Allocated memory is still 98.6MB. Free memory was 73.8MB in the beginning and 72.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:10:42,576 INFO L158 Benchmark]: Boogie Preprocessor took 33.95ms. Allocated memory is still 98.6MB. Free memory was 72.1MB in the beginning and 70.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-22 15:10:42,577 INFO L158 Benchmark]: RCFGBuilder took 348.35ms. Allocated memory is still 98.6MB. Free memory was 70.9MB in the beginning and 60.7MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-22 15:10:42,577 INFO L158 Benchmark]: TraceAbstraction took 17459.90ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 60.1MB in the beginning and 67.4MB in the end (delta: -7.3MB). Peak memory consumption was 53.6MB. Max. memory is 16.1GB. [2021-11-22 15:10:42,578 INFO L158 Benchmark]: Witness Printer took 58.52ms. Allocated memory is still 121.6MB. Free memory was 66.4MB in the beginning and 63.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-22 15:10:42,580 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 98.6MB. Free memory is still 51.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 324.22ms. Allocated memory is still 98.6MB. Free memory was 64.8MB in the beginning and 73.8MB in the end (delta: -9.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.18ms. Allocated memory is still 98.6MB. Free memory was 73.8MB in the beginning and 72.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.95ms. Allocated memory is still 98.6MB. Free memory was 72.1MB in the beginning and 70.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 348.35ms. Allocated memory is still 98.6MB. Free memory was 70.9MB in the beginning and 60.7MB in the end (delta: 10.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 17459.90ms. Allocated memory was 98.6MB in the beginning and 121.6MB in the end (delta: 23.1MB). Free memory was 60.1MB in the beginning and 67.4MB in the end (delta: -7.3MB). Peak memory consumption was 53.6MB. Max. memory is 16.1GB. * Witness Printer took 58.52ms. Allocated memory is still 121.6MB. Free memory was 66.4MB in the beginning and 63.2MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 17.4s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 433 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 433 mSDsluCounter, 635 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 374 mSDsCounter, 146 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 452 IncrementalHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 146 mSolverCounterUnsat, 261 mSDtfsCounter, 452 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 302 GetRequests, 237 SyntacticMatches, 4 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=7, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 116 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 27 NumberOfFragments, 413 HoareAnnotationTreeSize, 9 FomulaSimplifications, 551 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 170 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.4s InterpolantComputationTime, 218 NumberOfCodeBlocks, 218 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 290 ConstructedInterpolants, 0 QuantifiedInterpolants, 3808 SizeOfPredicates, 37 NumberOfNonLiveVariables, 710 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 13 InterpolantComputations, 8 PerfectInterpolantSequences, 78/119 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((B + r == A && 1 <= cond) && q == 1) && A + d == q * B + p * B + r) && r + q * d == A) && B == 1) || (((((p == 1 && B == d) && 1 <= cond) && q == 0) && A == r) && B == 1)) || (((((d == 2 * B && 2 == p) && 1 <= cond) && q == 0) && A == r) && B == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((p == 1 && B == d) && !(cond == 0)) && B == 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((p == 1 && B == d) && 1 <= cond) && q == 0) && A == r) && B == 1) || (((((d == 2 * B && 2 == p) && 1 <= cond) && q == 0) && A == r) && B == 1)) || (((((B == d && 1 <= cond) && q == 1) && A + d == q * B + p * B + r) && r + q * d == A) && B == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((cond == 1 && p == 1) && B == d) && 1 <= cond) && A <= 1) && A == r) && r + q * d == A) && B == 1) && 0 <= A) || ((((((((cond == 1 && d == 2 * B) && 2 == p) && 1 <= cond) && A <= 1) && q == 0) && A == r) && B == 1) && 0 <= A) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((cond == 1 && p == 1) && B == d) && 1 <= cond) && A <= 1) && A == r) && r + q * d == A) && B == 1) && 0 <= A) || ((((((((cond == 1 && d == 2 * B) && 2 == p) && 1 <= cond) && A <= 1) && q == 0) && A == r) && B == 1) && 0 <= A) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((cond == 1 && p == 1) && B == d) && A <= 1) && A == r) && r + q * d == A) && B == 1) && 0 <= A) || ((((((((cond == 1 && d == 2 * B) && 2 == p) && 1 <= cond) && A <= 1) && q == 0) && A == r) && B == 1) && 0 <= A) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((cond == 1 && p == 1) && B == d) && 1 <= cond) && A <= 1) && A == r) && r + q * d == A) && B == 1) && 0 <= A) || ((((((((cond == 1 && d == 2 * B) && 2 == p) && 1 <= cond) && A <= 1) && q == 0) && A == r) && B == 1) && 0 <= A) RESULT: Ultimate proved your program to be correct! [2021-11-22 15:10:42,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0702c1e8-5725-4e86-9af1-7578bcc6bc99/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE