./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL --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 3f9b33d2a8120d9ea8a3a6c5d650c2a90b549ffb583b3e9890b411aeb4530efd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:44:44,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:44:44,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:44:44,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:44:44,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:44:44,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:44:45,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:44:45,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:44:45,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:44:45,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:44:45,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:44:45,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:44:45,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:44:45,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:44:45,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:44:45,027 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:44:45,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:44:45,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:44:45,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:44:45,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:44:45,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:44:45,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:44:45,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:44:45,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:44:45,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:44:45,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:44:45,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:44:45,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:44:45,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:44:45,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:44:45,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:44:45,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:44:45,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:44:45,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:44:45,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:44:45,072 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:44:45,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:44:45,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:44:45,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:44:45,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:44:45,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:44:45,077 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 04:44:45,124 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:44:45,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:44:45,125 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:44:45,125 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:44:45,133 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:44:45,133 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:44:45,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:44:45,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:44:45,135 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:44:45,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:44:45,136 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:44:45,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:44:45,137 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:44:45,137 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:44:45,137 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:44:45,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:44:45,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:44:45,138 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:44:45,138 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:44:45,138 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:44:45,138 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:44:45,139 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:44:45,139 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:44:45,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:44:45,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:44:45,140 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:44:45,140 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:44:45,140 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:44:45,140 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:44:45,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:44:45,142 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:44:45,142 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:44:45,143 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:44:45,143 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:44:45,143 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_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f9b33d2a8120d9ea8a3a6c5d650c2a90b549ffb583b3e9890b411aeb4530efd [2021-11-19 04:44:45,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:44:45,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:44:45,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:44:45,495 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:44:45,495 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:44:45,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c [2021-11-19 04:44:45,605 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/data/ef89b7a93/5c9d9d4362474524b92ad2848b6e426c/FLAG9b8d29ea6 [2021-11-19 04:44:46,154 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:44:46,154 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c [2021-11-19 04:44:46,161 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/data/ef89b7a93/5c9d9d4362474524b92ad2848b6e426c/FLAG9b8d29ea6 [2021-11-19 04:44:46,512 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/data/ef89b7a93/5c9d9d4362474524b92ad2848b6e426c [2021-11-19 04:44:46,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:44:46,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:44:46,518 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:44:46,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:44:46,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:44:46,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:44:46" (1/1) ... [2021-11-19 04:44:46,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afe690d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:46, skipping insertion in model container [2021-11-19 04:44:46,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:44:46" (1/1) ... [2021-11-19 04:44:46,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:44:46,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:44:46,731 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_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c[489,502] [2021-11-19 04:44:46,752 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:44:46,761 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:44:46,773 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_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c[489,502] [2021-11-19 04:44:46,782 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:44:46,795 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:44:46,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:46 WrapperNode [2021-11-19 04:44:46,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:44:46,797 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:44:46,797 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:44:46,797 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:44:46,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:46" (1/1) ... [2021-11-19 04:44:46,813 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:46" (1/1) ... [2021-11-19 04:44:46,834 INFO L137 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2021-11-19 04:44:46,834 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:44:46,835 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:44:46,835 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:44:46,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:44:46,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:46" (1/1) ... [2021-11-19 04:44:46,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:46" (1/1) ... [2021-11-19 04:44:46,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:46" (1/1) ... [2021-11-19 04:44:46,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:46" (1/1) ... [2021-11-19 04:44:46,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:46" (1/1) ... [2021-11-19 04:44:46,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:46" (1/1) ... [2021-11-19 04:44:46,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:46" (1/1) ... [2021-11-19 04:44:46,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:44:46,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:44:46,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:44:46,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:44:46,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:46" (1/1) ... [2021-11-19 04:44:46,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:44:46,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:44:46,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:44:46,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:44:46,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:44:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-19 04:44:46,942 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-19 04:44:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:44:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:44:46,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:44:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 04:44:46,942 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 04:44:47,013 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:44:47,018 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:44:47,139 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:44:47,146 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:44:47,146 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 04:44:47,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:44:47 BoogieIcfgContainer [2021-11-19 04:44:47,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:44:47,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:44:47,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:44:47,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:44:47,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:44:46" (1/3) ... [2021-11-19 04:44:47,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493691ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:44:47, skipping insertion in model container [2021-11-19 04:44:47,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:44:46" (2/3) ... [2021-11-19 04:44:47,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493691ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:44:47, skipping insertion in model container [2021-11-19 04:44:47,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:44:47" (3/3) ... [2021-11-19 04:44:47,157 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound5.c [2021-11-19 04:44:47,162 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:44:47,162 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 04:44:47,214 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:44:47,222 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 [2021-11-19 04:44:47,222 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 04:44:47,239 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-19 04:44:47,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 04:44:47,245 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:47,245 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:44:47,246 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:47,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:47,252 INFO L85 PathProgramCache]: Analyzing trace with hash 516392259, now seen corresponding path program 1 times [2021-11-19 04:44:47,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:47,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725569534] [2021-11-19 04:44:47,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:47,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:47,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-19 04:44:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:47,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-19 04:44:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:47,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-19 04:44:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:47,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-19 04:44:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:47,486 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-19 04:44:47,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:47,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725569534] [2021-11-19 04:44:47,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725569534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:47,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:47,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 04:44:47,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728652278] [2021-11-19 04:44:47,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:47,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 04:44:47,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:47,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 04:44:47,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:44:47,571 INFO L87 Difference]: Start difference. First operand has 32 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 04:44:47,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:47,595 INFO L93 Difference]: Finished difference Result 61 states and 99 transitions. [2021-11-19 04:44:47,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 04:44:47,597 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2021-11-19 04:44:47,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:47,606 INFO L225 Difference]: With dead ends: 61 [2021-11-19 04:44:47,606 INFO L226 Difference]: Without dead ends: 28 [2021-11-19 04:44:47,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:44:47,614 INFO L933 BasicCegarLoop]: 42 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, 42 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 [2021-11-19 04:44:47,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:44:47,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-19 04:44:47,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-11-19 04:44:47,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-19 04:44:47,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2021-11-19 04:44:47,660 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 29 [2021-11-19 04:44:47,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:47,662 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2021-11-19 04:44:47,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 04:44:47,663 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2021-11-19 04:44:47,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-19 04:44:47,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:47,665 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:44:47,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:44:47,665 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:47,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:47,667 INFO L85 PathProgramCache]: Analyzing trace with hash 501437177, now seen corresponding path program 1 times [2021-11-19 04:44:47,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:47,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810706858] [2021-11-19 04:44:47,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:47,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:47,690 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 04:44:47,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1667932706] [2021-11-19 04:44:47,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:47,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:44:47,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:44:47,694 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:44:47,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 04:44:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:47,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 04:44:47,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:44:48,102 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-19 04:44:48,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:44:48,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:48,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810706858] [2021-11-19 04:44:48,104 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 04:44:48,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667932706] [2021-11-19 04:44:48,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667932706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:48,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:48,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:44:48,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301328391] [2021-11-19 04:44:48,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:48,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:44:48,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:48,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:44:48,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:44:48,120 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 04:44:48,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:48,211 INFO L93 Difference]: Finished difference Result 44 states and 61 transitions. [2021-11-19 04:44:48,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:44:48,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2021-11-19 04:44:48,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:48,214 INFO L225 Difference]: With dead ends: 44 [2021-11-19 04:44:48,214 INFO L226 Difference]: Without dead ends: 42 [2021-11-19 04:44:48,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:44:48,216 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:48,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 139 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:44:48,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-19 04:44:48,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2021-11-19 04:44:48,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 04:44:48,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2021-11-19 04:44:48,232 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 29 [2021-11-19 04:44:48,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:48,233 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2021-11-19 04:44:48,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-19 04:44:48,234 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2021-11-19 04:44:48,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-19 04:44:48,235 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:48,235 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:44:48,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 04:44:48,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-19 04:44:48,451 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:48,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:48,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1017640517, now seen corresponding path program 1 times [2021-11-19 04:44:48,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:48,452 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127237156] [2021-11-19 04:44:48,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:48,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:48,470 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 04:44:48,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [576533095] [2021-11-19 04:44:48,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:48,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:44:48,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:44:48,478 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:44:48,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 04:44:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:48,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 04:44:48,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:44:48,723 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-19 04:44:48,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:44:48,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:48,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127237156] [2021-11-19 04:44:48,725 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 04:44:48,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576533095] [2021-11-19 04:44:48,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576533095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:48,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:48,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:44:48,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953384205] [2021-11-19 04:44:48,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:48,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:44:48,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:48,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:44:48,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:44:48,731 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:44:48,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:48,825 INFO L93 Difference]: Finished difference Result 66 states and 98 transitions. [2021-11-19 04:44:48,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:44:48,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2021-11-19 04:44:48,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:48,836 INFO L225 Difference]: With dead ends: 66 [2021-11-19 04:44:48,836 INFO L226 Difference]: Without dead ends: 64 [2021-11-19 04:44:48,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:44:48,841 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 8 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:48,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 140 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:44:48,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-19 04:44:48,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2021-11-19 04:44:48,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2021-11-19 04:44:48,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2021-11-19 04:44:48,885 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 34 [2021-11-19 04:44:48,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:48,886 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2021-11-19 04:44:48,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 04:44:48,886 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2021-11-19 04:44:48,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-19 04:44:48,890 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:48,891 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:44:48,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:44:49,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:44:49,105 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:49,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:49,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1133401081, now seen corresponding path program 1 times [2021-11-19 04:44:49,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:49,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541595700] [2021-11-19 04:44:49,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:49,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:49,122 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 04:44:49,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1647090438] [2021-11-19 04:44:49,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:49,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:44:49,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:44:49,124 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:44:49,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 04:44:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:49,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 04:44:49,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:44:49,343 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-19 04:44:49,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:44:49,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:49,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541595700] [2021-11-19 04:44:49,344 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 04:44:49,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647090438] [2021-11-19 04:44:49,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647090438] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:49,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:49,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:44:49,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133022608] [2021-11-19 04:44:49,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:49,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:44:49,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:49,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:44:49,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:44:49,347 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-19 04:44:49,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:49,430 INFO L93 Difference]: Finished difference Result 64 states and 89 transitions. [2021-11-19 04:44:49,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:44:49,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2021-11-19 04:44:49,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:49,434 INFO L225 Difference]: With dead ends: 64 [2021-11-19 04:44:49,435 INFO L226 Difference]: Without dead ends: 60 [2021-11-19 04:44:49,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:44:49,441 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 8 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:49,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 139 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:44:49,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-19 04:44:49,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-11-19 04:44:49,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 32 states have (on average 1.28125) internal successors, (41), 34 states have internal predecessors, (41), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-19 04:44:49,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 83 transitions. [2021-11-19 04:44:49,471 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 83 transitions. Word has length 39 [2021-11-19 04:44:49,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:49,472 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 83 transitions. [2021-11-19 04:44:49,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-11-19 04:44:49,472 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 83 transitions. [2021-11-19 04:44:49,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-19 04:44:49,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:49,474 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:44:49,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 04:44:49,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:44:49,692 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:49,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:49,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1954831506, now seen corresponding path program 1 times [2021-11-19 04:44:49,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:49,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792794056] [2021-11-19 04:44:49,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:49,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:49,710 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 04:44:49,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1714336957] [2021-11-19 04:44:49,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:49,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:44:49,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:44:49,715 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:44:49,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 04:44:49,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:49,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:44:49,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:44:49,896 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-19 04:44:49,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:44:49,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:49,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792794056] [2021-11-19 04:44:49,897 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 04:44:49,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714336957] [2021-11-19 04:44:49,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714336957] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:49,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:49,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:44:49,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444687388] [2021-11-19 04:44:49,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:49,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:44:49,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:49,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:44:49,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:44:49,899 INFO L87 Difference]: Start difference. First operand 60 states and 83 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-19 04:44:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:49,946 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2021-11-19 04:44:49,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:44:49,946 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 45 [2021-11-19 04:44:49,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:49,948 INFO L225 Difference]: With dead ends: 66 [2021-11-19 04:44:49,948 INFO L226 Difference]: Without dead ends: 64 [2021-11-19 04:44:49,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:44:49,950 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 5 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:49,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 131 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:44:49,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-19 04:44:49,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-11-19 04:44:49,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 37 states have internal predecessors, (44), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-19 04:44:49,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2021-11-19 04:44:49,961 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 45 [2021-11-19 04:44:49,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:49,962 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2021-11-19 04:44:49,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-11-19 04:44:49,963 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2021-11-19 04:44:49,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-19 04:44:49,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:49,964 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:44:50,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 04:44:50,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:44:50,185 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:50,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:50,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1265228631, now seen corresponding path program 1 times [2021-11-19 04:44:50,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:50,186 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197349898] [2021-11-19 04:44:50,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:50,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:50,199 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 04:44:50,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1230964866] [2021-11-19 04:44:50,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:50,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:44:50,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:44:50,221 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:44:50,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-19 04:44:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:50,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 04:44:50,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:44:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-19 04:44:50,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:44:50,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:50,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197349898] [2021-11-19 04:44:50,497 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 04:44:50,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230964866] [2021-11-19 04:44:50,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230964866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:44:50,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:44:50,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:44:50,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216427516] [2021-11-19 04:44:50,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:50,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:44:50,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:50,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:44:50,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:44:50,500 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 04:44:50,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:50,556 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2021-11-19 04:44:50,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:44:50,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2021-11-19 04:44:50,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:50,559 INFO L225 Difference]: With dead ends: 80 [2021-11-19 04:44:50,559 INFO L226 Difference]: Without dead ends: 78 [2021-11-19 04:44:50,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:44:50,560 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 6 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:50,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 139 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:44:50,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-11-19 04:44:50,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2021-11-19 04:44:50,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 44 states have internal predecessors, (50), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2021-11-19 04:44:50,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2021-11-19 04:44:50,574 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 47 [2021-11-19 04:44:50,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:50,575 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2021-11-19 04:44:50,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 04:44:50,575 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2021-11-19 04:44:50,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-19 04:44:50,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:50,577 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:44:50,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-19 04:44:50,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-19 04:44:50,805 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:50,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:50,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1617953190, now seen corresponding path program 1 times [2021-11-19 04:44:50,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:50,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222389690] [2021-11-19 04:44:50,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:50,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:50,818 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 04:44:50,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [135641780] [2021-11-19 04:44:50,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:50,819 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:44:50,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:44:50,820 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:44:50,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-19 04:44:50,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:50,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 04:44:50,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:44:51,061 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-19 04:44:51,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:44:51,310 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-19 04:44:51,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:51,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222389690] [2021-11-19 04:44:51,311 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 04:44:51,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135641780] [2021-11-19 04:44:51,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135641780] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:44:51,311 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:44:51,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-11-19 04:44:51,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893347618] [2021-11-19 04:44:51,313 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:44:51,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 04:44:51,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:51,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 04:44:51,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:44:51,316 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-19 04:44:51,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:51,467 INFO L93 Difference]: Finished difference Result 84 states and 108 transitions. [2021-11-19 04:44:51,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:44:51,468 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 50 [2021-11-19 04:44:51,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:51,472 INFO L225 Difference]: With dead ends: 84 [2021-11-19 04:44:51,473 INFO L226 Difference]: Without dead ends: 80 [2021-11-19 04:44:51,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 90 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-11-19 04:44:51,474 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 13 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:51,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 167 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:44:51,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-19 04:44:51,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-11-19 04:44:51,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 48 states have internal predecessors, (52), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:44:51,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2021-11-19 04:44:51,510 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 50 [2021-11-19 04:44:51,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:51,512 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2021-11-19 04:44:51,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-11-19 04:44:51,513 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2021-11-19 04:44:51,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-19 04:44:51,522 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:51,522 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:44:51,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-19 04:44:51,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:44:51,729 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:51,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:51,729 INFO L85 PathProgramCache]: Analyzing trace with hash 860577929, now seen corresponding path program 1 times [2021-11-19 04:44:51,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:51,730 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166385376] [2021-11-19 04:44:51,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:51,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:51,739 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 04:44:51,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442081574] [2021-11-19 04:44:51,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:51,739 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:44:51,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:44:51,740 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:44:51,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-19 04:44:51,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:51,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-19 04:44:51,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:44:52,074 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-19 04:44:52,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:44:52,224 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-19 04:44:52,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:52,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166385376] [2021-11-19 04:44:52,225 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 04:44:52,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442081574] [2021-11-19 04:44:52,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442081574] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:44:52,225 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:44:52,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-11-19 04:44:52,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917531848] [2021-11-19 04:44:52,226 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:44:52,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 04:44:52,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:52,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 04:44:52,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:44:52,228 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-19 04:44:52,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:52,948 INFO L93 Difference]: Finished difference Result 106 states and 137 transitions. [2021-11-19 04:44:52,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:44:52,949 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 52 [2021-11-19 04:44:52,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:52,951 INFO L225 Difference]: With dead ends: 106 [2021-11-19 04:44:52,951 INFO L226 Difference]: Without dead ends: 99 [2021-11-19 04:44:52,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-19 04:44:52,953 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 14 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:52,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 164 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 04:44:52,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-11-19 04:44:52,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 84. [2021-11-19 04:44:52,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 53 states have internal predecessors, (57), 21 states have call successors, (21), 11 states have call predecessors, (21), 11 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-19 04:44:52,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 98 transitions. [2021-11-19 04:44:52,970 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 98 transitions. Word has length 52 [2021-11-19 04:44:52,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:52,971 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 98 transitions. [2021-11-19 04:44:52,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 5 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-11-19 04:44:52,971 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 98 transitions. [2021-11-19 04:44:52,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 04:44:52,973 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:44:52,973 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:44:53,011 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-19 04:44:53,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:44:53,189 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:44:53,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:44:53,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1236716699, now seen corresponding path program 1 times [2021-11-19 04:44:53,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:44:53,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439401191] [2021-11-19 04:44:53,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:53,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:44:53,201 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 04:44:53,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1017659322] [2021-11-19 04:44:53,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:44:53,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:44:53,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:44:53,212 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:44:53,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-19 04:44:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:44:53,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 04:44:53,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:44:53,589 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-19 04:44:53,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:44:53,761 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2021-11-19 04:44:53,762 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:44:53,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439401191] [2021-11-19 04:44:53,762 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 04:44:53,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017659322] [2021-11-19 04:44:53,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017659322] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 04:44:53,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 04:44:53,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2021-11-19 04:44:53,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038425096] [2021-11-19 04:44:53,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:44:53,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:44:53,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:44:53,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:44:53,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:44:53,772 INFO L87 Difference]: Start difference. First operand 84 states and 98 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 04:44:53,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:44:53,817 INFO L93 Difference]: Finished difference Result 84 states and 98 transitions. [2021-11-19 04:44:53,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:44:53,818 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2021-11-19 04:44:53,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:44:53,818 INFO L225 Difference]: With dead ends: 84 [2021-11-19 04:44:53,818 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 04:44:53,822 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-19 04:44:53,824 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 6 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:44:53,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 102 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:44:53,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 04:44:53,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 04:44:53,826 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) [2021-11-19 04:44:53,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 04:44:53,827 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2021-11-19 04:44:53,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:44:53,827 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 04:44:53,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 04:44:53,827 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 04:44:53,828 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 04:44:53,830 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 04:44:53,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-19 04:44:54,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-19 04:44:54,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-19 04:44:56,047 INFO L854 garLoopResultBuilder]: At program point L35-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (let ((.cse2 (+ .cse0 .cse1))) (and (= (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ |ULTIMATE.start_main_~b~0#1| .cse0 .cse1)) (= |ULTIMATE.start_main_~b~0#1| .cse2) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~p~0#1|)) (= |ULTIMATE.start_main_~a~0#1| .cse2)))) [2021-11-19 04:44:56,048 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-19 04:44:56,048 INFO L861 garLoopResultBuilder]: At program point L58(lines 18 59) the Hoare annotation is: true [2021-11-19 04:44:56,048 INFO L861 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: true [2021-11-19 04:44:56,048 INFO L854 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (or (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (let ((.cse2 (+ .cse0 .cse1))) (and (= (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ |ULTIMATE.start_main_~b~0#1| .cse0 .cse1)) (= |ULTIMATE.start_main_~b~0#1| .cse2) (= |ULTIMATE.start_main_~a~0#1| .cse2)))) (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~s~0#1| 1))) [2021-11-19 04:44:56,048 INFO L854 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (let ((.cse2 (+ .cse0 .cse1))) (and (= (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ |ULTIMATE.start_main_~b~0#1| .cse0 .cse1)) (= |ULTIMATE.start_main_~b~0#1| .cse2) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~p~0#1|)) (= |ULTIMATE.start_main_~a~0#1| .cse2)))) [2021-11-19 04:44:56,048 INFO L858 garLoopResultBuilder]: For program point L38(lines 35 52) no Hoare annotation was computed. [2021-11-19 04:44:56,049 INFO L854 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (= (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ |ULTIMATE.start_main_~b~0#1| .cse0 .cse1)) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~p~0#1|)) (= |ULTIMATE.start_main_~a~0#1| (+ .cse0 .cse1)))) [2021-11-19 04:44:56,049 INFO L854 garLoopResultBuilder]: At program point L36-1(line 36) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (= (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ |ULTIMATE.start_main_~b~0#1| .cse0 .cse1)) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~p~0#1|)) (= |ULTIMATE.start_main_~a~0#1| (+ .cse0 .cse1)))) [2021-11-19 04:44:56,049 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-19 04:44:56,049 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-19 04:44:56,049 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-19 04:44:56,049 INFO L858 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-11-19 04:44:56,049 INFO L858 garLoopResultBuilder]: For program point L57(line 57) no Hoare annotation was computed. [2021-11-19 04:44:56,049 INFO L861 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: true [2021-11-19 04:44:56,050 INFO L861 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: true [2021-11-19 04:44:56,050 INFO L854 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~s~0#1| 1)) (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (let ((.cse2 (+ .cse0 .cse1))) (and (= (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ |ULTIMATE.start_main_~b~0#1| .cse0 .cse1)) (= |ULTIMATE.start_main_~b~0#1| .cse2) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~p~0#1|)) (= |ULTIMATE.start_main_~a~0#1| .cse2))))) [2021-11-19 04:44:56,050 INFO L861 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2021-11-19 04:44:56,050 INFO L858 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-11-19 04:44:56,050 INFO L858 garLoopResultBuilder]: For program point L43(lines 43 51) no Hoare annotation was computed. [2021-11-19 04:44:56,050 INFO L854 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (= (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ |ULTIMATE.start_main_~b~0#1| .cse0 .cse1)) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~p~0#1|)) (= |ULTIMATE.start_main_~a~0#1| (+ .cse0 .cse1)))) [2021-11-19 04:44:56,050 INFO L854 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (and (= (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|) |ULTIMATE.start_main_~a~0#1|) (+ |ULTIMATE.start_main_~b~0#1| .cse0 .cse1)) (= (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1) (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~p~0#1|)) (= |ULTIMATE.start_main_~a~0#1| (+ .cse0 .cse1)))) [2021-11-19 04:44:56,051 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2021-11-19 04:44:56,051 INFO L858 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-11-19 04:44:56,051 INFO L858 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2021-11-19 04:44:56,051 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2021-11-19 04:44:56,051 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2021-11-19 04:44:56,051 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-11-19 04:44:56,051 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-11-19 04:44:56,051 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2021-11-19 04:44:56,051 INFO L858 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2021-11-19 04:44:56,052 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-11-19 04:44:56,055 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:44:56,057 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 04:44:56,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:44:56 BoogieIcfgContainer [2021-11-19 04:44:56,072 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 04:44:56,073 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 04:44:56,073 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 04:44:56,073 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 04:44:56,074 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:44:47" (3/4) ... [2021-11-19 04:44:56,077 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-19 04:44:56,084 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-19 04:44:56,084 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-19 04:44:56,088 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-11-19 04:44:56,089 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-19 04:44:56,089 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-19 04:44:56,089 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-19 04:44:56,123 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 04:44:56,124 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 04:44:56,125 INFO L158 Benchmark]: Toolchain (without parser) took 9608.39ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 77.1MB in the beginning and 88.1MB in the end (delta: -11.0MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2021-11-19 04:44:56,125 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 79.7MB. Free memory was 50.6MB in the beginning and 50.6MB in the end (delta: 29.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:44:56,125 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.11ms. Allocated memory is still 111.1MB. Free memory was 76.8MB in the beginning and 88.1MB in the end (delta: -11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 04:44:56,126 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.97ms. Allocated memory is still 111.1MB. Free memory was 88.1MB in the beginning and 86.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:44:56,126 INFO L158 Benchmark]: Boogie Preprocessor took 22.49ms. Allocated memory is still 111.1MB. Free memory was 86.5MB in the beginning and 85.6MB in the end (delta: 880.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:44:56,127 INFO L158 Benchmark]: RCFGBuilder took 290.12ms. Allocated memory is still 111.1MB. Free memory was 85.3MB in the beginning and 75.4MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 04:44:56,127 INFO L158 Benchmark]: TraceAbstraction took 8922.58ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 74.8MB in the beginning and 91.3MB in the end (delta: -16.4MB). Peak memory consumption was 60.0MB. Max. memory is 16.1GB. [2021-11-19 04:44:56,128 INFO L158 Benchmark]: Witness Printer took 51.06ms. Allocated memory is still 134.2MB. Free memory was 91.3MB in the beginning and 88.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 04:44:56,130 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 79.7MB. Free memory was 50.6MB in the beginning and 50.6MB in the end (delta: 29.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 278.11ms. Allocated memory is still 111.1MB. Free memory was 76.8MB in the beginning and 88.1MB in the end (delta: -11.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.97ms. Allocated memory is still 111.1MB. Free memory was 88.1MB in the beginning and 86.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.49ms. Allocated memory is still 111.1MB. Free memory was 86.5MB in the beginning and 85.6MB in the end (delta: 880.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 290.12ms. Allocated memory is still 111.1MB. Free memory was 85.3MB in the beginning and 75.4MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 8922.58ms. Allocated memory was 111.1MB in the beginning and 134.2MB in the end (delta: 23.1MB). Free memory was 74.8MB in the beginning and 91.3MB in the end (delta: -16.4MB). Peak memory consumption was 60.0MB. Max. memory is 16.1GB. * Witness Printer took 51.06ms. Allocated memory is still 134.2MB. Free memory was 91.3MB in the beginning and 88.1MB in the end (delta: 3.1MB). 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: 13]: 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 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 8.8s, OverallIterations: 9, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 91 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 67 mSDsluCounter, 1163 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 831 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 397 IncrementalHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 332 mSDtfsCounter, 397 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 539 GetRequests, 489 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=8, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 26 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 53 PreInvPairs, 88 NumberOfFragments, 347 HoareAnnotationTreeSize, 53 FomulaSimplifications, 28 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 1597 FormulaSimplificationTreeSizeReductionInter, 1.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 390 NumberOfCodeBlocks, 390 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 545 ConstructedInterpolants, 0 QuantifiedInterpolants, 1416 SizeOfPredicates, 14 NumberOfNonLiveVariables, 959 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 12 InterpolantComputations, 7 PerfectInterpolantSequences, 604/634 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 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (x * q + y * s + a == b + x * p + y * r && q * r + 1 == s * p) && a == x * p + y * r - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-19 04:44:56,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_908d7bc4-7cc7-4b05-a9fc-628e6165c79a/bin/uautomizer-ZXIjhQolGL/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