./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/gcd_3+newton_3_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_3_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN --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 6398dd839d77433d1687aba555077cd298c276d20f879ef7dc3c0a3d5c207e2a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:58:50,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:58:50,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:58:50,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:58:50,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:58:50,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:58:50,650 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:58:50,653 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:58:50,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:58:50,656 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:58:50,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:58:50,658 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:58:50,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:58:50,660 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:58:50,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:58:50,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:58:50,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:58:50,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:58:50,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:58:50,669 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:58:50,670 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:58:50,672 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:58:50,673 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:58:50,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:58:50,678 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:58:50,679 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:58:50,679 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:58:50,680 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:58:50,681 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:58:50,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:58:50,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:58:50,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:58:50,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:58:50,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:58:50,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:58:50,687 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:58:50,688 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:58:50,688 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:58:50,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:58:50,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:58:50,690 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:58:50,691 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:58:50,742 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:58:50,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:58:50,748 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:58:50,749 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:58:50,750 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:58:50,750 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:58:50,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:58:50,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:58:50,751 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:58:50,752 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:58:50,753 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:58:50,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:58:50,754 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:58:50,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:58:50,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:58:50,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:58:50,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:58:50,755 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:58:50,755 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:58:50,755 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:58:50,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:58:50,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:58:50,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:58:50,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:58:50,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:58:50,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:58:50,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:58:50,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:58:50,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:58:50,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:58:50,759 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:58:50,759 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:58:50,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:58:50,760 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_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6398dd839d77433d1687aba555077cd298c276d20f879ef7dc3c0a3d5c207e2a [2022-11-20 11:58:51,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:58:51,238 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:58:51,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:58:51,242 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:58:51,242 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:58:51,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/gcd_3+newton_3_8.i [2022-11-20 11:58:54,474 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:58:54,720 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:58:54,721 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/sv-benchmarks/c/combinations/gcd_3+newton_3_8.i [2022-11-20 11:58:54,729 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/data/82246fcd5/ec0b62d24bdb4a409ad4b0b941a00dca/FLAGd9ec40ad6 [2022-11-20 11:58:54,745 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/data/82246fcd5/ec0b62d24bdb4a409ad4b0b941a00dca [2022-11-20 11:58:54,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:58:54,749 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:58:54,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:58:54,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:58:54,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:58:54,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:58:54" (1/1) ... [2022-11-20 11:58:54,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2de11d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:54, skipping insertion in model container [2022-11-20 11:58:54,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:58:54" (1/1) ... [2022-11-20 11:58:54,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:58:54,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:58:55,003 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/sv-benchmarks/c/combinations/gcd_3+newton_3_8.i[1226,1239] [2022-11-20 11:58:55,032 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/sv-benchmarks/c/combinations/gcd_3+newton_3_8.i[2862,2875] [2022-11-20 11:58:55,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:58:55,045 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:58:55,061 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/sv-benchmarks/c/combinations/gcd_3+newton_3_8.i[1226,1239] [2022-11-20 11:58:55,073 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/sv-benchmarks/c/combinations/gcd_3+newton_3_8.i[2862,2875] [2022-11-20 11:58:55,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:58:55,092 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:58:55,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:55 WrapperNode [2022-11-20 11:58:55,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:58:55,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:58:55,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:58:55,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:58:55,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:55" (1/1) ... [2022-11-20 11:58:55,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:55" (1/1) ... [2022-11-20 11:58:55,170 INFO L138 Inliner]: procedures = 27, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 90 [2022-11-20 11:58:55,170 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:58:55,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:58:55,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:58:55,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:58:55,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:55" (1/1) ... [2022-11-20 11:58:55,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:55" (1/1) ... [2022-11-20 11:58:55,192 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:55" (1/1) ... [2022-11-20 11:58:55,193 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:55" (1/1) ... [2022-11-20 11:58:55,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:55" (1/1) ... [2022-11-20 11:58:55,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:55" (1/1) ... [2022-11-20 11:58:55,216 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:55" (1/1) ... [2022-11-20 11:58:55,217 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:55" (1/1) ... [2022-11-20 11:58:55,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:58:55,221 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:58:55,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:58:55,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:58:55,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:55" (1/1) ... [2022-11-20 11:58:55,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:58:55,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:58:55,277 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:58:55,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:58:55,331 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:58:55,331 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-20 11:58:55,332 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-20 11:58:55,333 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-20 11:58:55,335 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-20 11:58:55,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:58:55,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:58:55,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:58:55,444 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:58:55,447 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:58:55,728 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:58:55,735 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:58:55,735 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:58:55,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:58:55 BoogieIcfgContainer [2022-11-20 11:58:55,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:58:55,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:58:55,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:58:55,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:58:55,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:58:54" (1/3) ... [2022-11-20 11:58:55,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8662e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:58:55, skipping insertion in model container [2022-11-20 11:58:55,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:58:55" (2/3) ... [2022-11-20 11:58:55,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a8662e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:58:55, skipping insertion in model container [2022-11-20 11:58:55,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:58:55" (3/3) ... [2022-11-20 11:58:55,748 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_3_8.i [2022-11-20 11:58:55,768 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:58:55,768 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 11:58:55,820 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:58:55,828 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@32951234, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:58:55,828 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 11:58:55,833 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 11:58:55,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:58:55,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:55,844 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:55,844 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:55,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:55,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-11-20 11:58:55,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:55,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356215284] [2022-11-20 11:58:55,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:55,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:56,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:56,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:56,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:56,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356215284] [2022-11-20 11:58:56,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356215284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:56,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:56,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:58:56,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218756592] [2022-11-20 11:58:56,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:56,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:58:56,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:56,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:58:56,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:58:56,282 INFO L87 Difference]: Start difference. First operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:56,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:56,404 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2022-11-20 11:58:56,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:58:56,409 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 11:58:56,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:56,417 INFO L225 Difference]: With dead ends: 96 [2022-11-20 11:58:56,417 INFO L226 Difference]: Without dead ends: 39 [2022-11-20 11:58:56,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:58:56,427 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 23 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:56,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 134 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:58:56,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-20 11:58:56,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2022-11-20 11:58:56,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 11:58:56,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 37 transitions. [2022-11-20 11:58:56,465 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 37 transitions. Word has length 11 [2022-11-20 11:58:56,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:56,466 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 37 transitions. [2022-11-20 11:58:56,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:56,466 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 37 transitions. [2022-11-20 11:58:56,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:58:56,468 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:56,468 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:56,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:58:56,469 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:56,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:56,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1776235347, now seen corresponding path program 1 times [2022-11-20 11:58:56,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:56,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119615485] [2022-11-20 11:58:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:56,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:56,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:56,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:58:56,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:58:56,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119615485] [2022-11-20 11:58:56,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119615485] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:58:56,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:58:56,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:58:56,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685265513] [2022-11-20 11:58:56,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:58:56,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:58:56,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:58:56,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:58:56,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:58:56,809 INFO L87 Difference]: Start difference. First operand 32 states and 37 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:56,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:58:56,897 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-20 11:58:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:58:56,898 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 11:58:56,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:58:56,899 INFO L225 Difference]: With dead ends: 39 [2022-11-20 11:58:56,899 INFO L226 Difference]: Without dead ends: 33 [2022-11-20 11:58:56,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:58:56,901 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 7 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:58:56,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 155 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:58:56,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-20 11:58:56,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-20 11:58:56,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 11:58:56,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-20 11:58:56,909 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2022-11-20 11:58:56,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:58:56,910 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-20 11:58:56,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:58:56,910 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-20 11:58:56,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 11:58:56,911 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:58:56,911 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:58:56,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:58:56,912 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:58:56,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:58:56,912 INFO L85 PathProgramCache]: Analyzing trace with hash 830014046, now seen corresponding path program 1 times [2022-11-20 11:58:56,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:58:56,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890457498] [2022-11-20 11:58:56,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:56,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:58:56,926 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:58:56,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212630489] [2022-11-20 11:58:56,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:58:56,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:58:56,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:58:56,930 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:58:56,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:58:57,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:58:57,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 11:58:57,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:08,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:08,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:59:29,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:29,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:59:29,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890457498] [2022-11-20 11:59:29,906 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:59:29,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212630489] [2022-11-20 11:59:29,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212630489] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:59:29,907 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:59:29,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-20 11:59:29,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031414474] [2022-11-20 11:59:29,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:59:29,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:59:29,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:59:29,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:59:29,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=180, Unknown=12, NotChecked=0, Total=240 [2022-11-20 11:59:29,911 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 16 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:35,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:59:35,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 35.4s TimeCoverageRelationStatistics Valid=67, Invalid=227, Unknown=12, NotChecked=0, Total=306 [2022-11-20 11:59:35,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 139 [2022-11-20 11:59:35,849 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:35,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 108 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 4 Unchecked, 0.6s Time] [2022-11-20 11:59:35,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:36,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:59:36,053 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:620) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:180) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:361) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:391) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:230) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:246) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:218) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:210) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1058) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:960) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.computeAutomataDifference(NwaCegarLoop.java:353) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.NwaCegarLoop.refineAbstraction(NwaCegarLoop.java:325) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 55 more [2022-11-20 11:59:36,057 INFO L158 Benchmark]: Toolchain (without parser) took 41308.26ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 131.5MB in the beginning and 81.6MB in the end (delta: 49.9MB). Peak memory consumption was 85.3MB. Max. memory is 16.1GB. [2022-11-20 11:59:36,058 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 125.8MB. Free memory was 94.1MB in the beginning and 94.0MB in the end (delta: 81.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:59:36,058 INFO L158 Benchmark]: CACSL2BoogieTranslator took 343.37ms. Allocated memory is still 159.4MB. Free memory was 131.5MB in the beginning and 122.5MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:59:36,059 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.78ms. Allocated memory is still 159.4MB. Free memory was 122.5MB in the beginning and 120.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:59:36,059 INFO L158 Benchmark]: Boogie Preprocessor took 48.93ms. Allocated memory is still 159.4MB. Free memory was 120.4MB in the beginning and 119.6MB in the end (delta: 842.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:59:36,060 INFO L158 Benchmark]: RCFGBuilder took 517.45ms. Allocated memory is still 159.4MB. Free memory was 119.6MB in the beginning and 105.7MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-20 11:59:36,061 INFO L158 Benchmark]: TraceAbstraction took 40316.14ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 105.7MB in the beginning and 81.6MB in the end (delta: 24.1MB). Peak memory consumption was 60.4MB. Max. memory is 16.1GB. [2022-11-20 11:59:36,071 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 125.8MB. Free memory was 94.1MB in the beginning and 94.0MB in the end (delta: 81.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 343.37ms. Allocated memory is still 159.4MB. Free memory was 131.5MB in the beginning and 122.5MB in the end (delta: 9.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.78ms. Allocated memory is still 159.4MB. Free memory was 122.5MB in the beginning and 120.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.93ms. Allocated memory is still 159.4MB. Free memory was 120.4MB in the beginning and 119.6MB in the end (delta: 842.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 517.45ms. Allocated memory is still 159.4MB. Free memory was 119.6MB in the beginning and 105.7MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 40316.14ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 105.7MB in the beginning and 81.6MB in the end (delta: 24.1MB). Peak memory consumption was 60.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/gcd_3+newton_3_8.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN --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 6398dd839d77433d1687aba555077cd298c276d20f879ef7dc3c0a3d5c207e2a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:59:38,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:59:38,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:59:38,412 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:59:38,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:59:38,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:59:38,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:59:38,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:59:38,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:59:38,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:59:38,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:59:38,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:59:38,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:59:38,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:59:38,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:59:38,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:59:38,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:59:38,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:59:38,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:59:38,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:59:38,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:59:38,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:59:38,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:59:38,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:59:38,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:59:38,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:59:38,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:59:38,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:59:38,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:59:38,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:59:38,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:59:38,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:59:38,479 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:59:38,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:59:38,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:59:38,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:59:38,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:59:38,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:59:38,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:59:38,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:59:38,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:59:38,494 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-20 11:59:38,528 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:59:38,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:59:38,529 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:59:38,529 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:59:38,530 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:59:38,530 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:59:38,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:59:38,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:59:38,532 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:59:38,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:59:38,532 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:59:38,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:59:38,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:59:38,533 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:59:38,533 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:59:38,533 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:59:38,533 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 11:59:38,534 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 11:59:38,534 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 11:59:38,534 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:59:38,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:59:38,534 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:59:38,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:59:38,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:59:38,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:59:38,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:59:38,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:59:38,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:59:38,536 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:59:38,536 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:59:38,536 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 11:59:38,537 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 11:59:38,537 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:59:38,537 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:59:38,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:59:38,537 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 11:59:38,538 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6398dd839d77433d1687aba555077cd298c276d20f879ef7dc3c0a3d5c207e2a [2022-11-20 11:59:38,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:59:38,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:59:38,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:59:38,936 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:59:38,937 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:59:38,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/gcd_3+newton_3_8.i [2022-11-20 11:59:42,179 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:59:42,417 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:59:42,417 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/sv-benchmarks/c/combinations/gcd_3+newton_3_8.i [2022-11-20 11:59:42,424 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/data/0b8a3c666/1ba6a6c4ac184c68bbc5650578c87158/FLAG2f0719dd0 [2022-11-20 11:59:42,438 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/data/0b8a3c666/1ba6a6c4ac184c68bbc5650578c87158 [2022-11-20 11:59:42,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:59:42,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:59:42,446 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:59:42,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:59:42,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:59:42,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:59:42" (1/1) ... [2022-11-20 11:59:42,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a0ec76a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:42, skipping insertion in model container [2022-11-20 11:59:42,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:59:42" (1/1) ... [2022-11-20 11:59:42,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:59:42,496 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:59:42,665 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/sv-benchmarks/c/combinations/gcd_3+newton_3_8.i[1226,1239] [2022-11-20 11:59:42,698 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/sv-benchmarks/c/combinations/gcd_3+newton_3_8.i[2862,2875] [2022-11-20 11:59:42,699 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:59:42,734 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:59:42,768 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/sv-benchmarks/c/combinations/gcd_3+newton_3_8.i[1226,1239] [2022-11-20 11:59:42,789 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/sv-benchmarks/c/combinations/gcd_3+newton_3_8.i[2862,2875] [2022-11-20 11:59:42,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:59:42,823 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:59:42,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:42 WrapperNode [2022-11-20 11:59:42,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:59:42,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:59:42,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:59:42,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:59:42,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:42" (1/1) ... [2022-11-20 11:59:42,867 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:42" (1/1) ... [2022-11-20 11:59:42,908 INFO L138 Inliner]: procedures = 28, calls = 26, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 85 [2022-11-20 11:59:42,908 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:59:42,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:59:42,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:59:42,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:59:42,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:42" (1/1) ... [2022-11-20 11:59:42,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:42" (1/1) ... [2022-11-20 11:59:42,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:42" (1/1) ... [2022-11-20 11:59:42,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:42" (1/1) ... [2022-11-20 11:59:42,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:42" (1/1) ... [2022-11-20 11:59:42,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:42" (1/1) ... [2022-11-20 11:59:42,965 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:42" (1/1) ... [2022-11-20 11:59:42,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:42" (1/1) ... [2022-11-20 11:59:42,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:59:42,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:59:42,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:59:42,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:59:42,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:42" (1/1) ... [2022-11-20 11:59:42,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:59:43,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:59:43,025 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:59:43,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:59:43,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:59:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 11:59:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-11-20 11:59:43,073 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-11-20 11:59:43,073 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-11-20 11:59:43,073 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-11-20 11:59:43,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:59:43,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:59:43,162 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:59:43,165 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:59:53,650 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:59:53,661 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:59:53,663 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 11:59:53,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:59:53 BoogieIcfgContainer [2022-11-20 11:59:53,665 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:59:53,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:59:53,668 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:59:53,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:59:53,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:59:42" (1/3) ... [2022-11-20 11:59:53,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e51d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:59:53, skipping insertion in model container [2022-11-20 11:59:53,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:59:42" (2/3) ... [2022-11-20 11:59:53,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57e51d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:59:53, skipping insertion in model container [2022-11-20 11:59:53,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:59:53" (3/3) ... [2022-11-20 11:59:53,673 INFO L112 eAbstractionObserver]: Analyzing ICFG gcd_3+newton_3_8.i [2022-11-20 11:59:53,692 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:59:53,692 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 11:59:53,774 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:59:53,783 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@f5033f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:59:53,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 11:59:53,788 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 11:59:53,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:59:53,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:53,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:53,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:53,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:53,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1709385323, now seen corresponding path program 1 times [2022-11-20 11:59:53,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:59:53,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1384221282] [2022-11-20 11:59:53,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:53,832 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:59:53,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:59:53,839 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:59:53,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 11:59:53,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:53,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 11:59:53,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:54,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:54,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:54,205 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:59:54,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1384221282] [2022-11-20 11:59:54,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1384221282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:54,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:54,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 11:59:54,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408486117] [2022-11-20 11:59:54,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:54,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 11:59:54,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:59:54,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 11:59:54,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:59:54,250 INFO L87 Difference]: Start difference. First operand has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 31 states have internal predecessors, (40), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:54,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:54,285 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2022-11-20 11:59:54,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 11:59:54,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 11:59:54,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:54,296 INFO L225 Difference]: With dead ends: 74 [2022-11-20 11:59:54,296 INFO L226 Difference]: Without dead ends: 33 [2022-11-20 11:59:54,299 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 11:59:54,303 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:54,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 4 Unchecked, 0.0s Time] [2022-11-20 11:59:54,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-20 11:59:54,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-20 11:59:54,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 11:59:54,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2022-11-20 11:59:54,348 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 11 [2022-11-20 11:59:54,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:54,348 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2022-11-20 11:59:54,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:54,349 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2022-11-20 11:59:54,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:59:54,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:54,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:54,371 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-20 11:59:54,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:59:54,566 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:54,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:54,567 INFO L85 PathProgramCache]: Analyzing trace with hash 65622039, now seen corresponding path program 1 times [2022-11-20 11:59:54,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:59:54,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307913420] [2022-11-20 11:59:54,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:54,568 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:59:54,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:59:54,570 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:59:54,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 11:59:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:54,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 11:59:54,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:54,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:54,816 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:54,816 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:59:54,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307913420] [2022-11-20 11:59:54,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307913420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:54,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:54,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 11:59:54,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286028335] [2022-11-20 11:59:54,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:54,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 11:59:54,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:59:54,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 11:59:54,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:59:54,821 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:55,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:55,027 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2022-11-20 11:59:55,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 11:59:55,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 11:59:55,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:55,032 INFO L225 Difference]: With dead ends: 49 [2022-11-20 11:59:55,033 INFO L226 Difference]: Without dead ends: 40 [2022-11-20 11:59:55,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 11:59:55,035 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 11 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:55,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 103 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:59:55,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-20 11:59:55,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2022-11-20 11:59:55,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 11:59:55,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-20 11:59:55,044 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2022-11-20 11:59:55,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:55,045 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-20 11:59:55,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:55,045 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-20 11:59:55,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 11:59:55,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:55,046 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:55,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:55,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:59:55,247 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:55,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:55,248 INFO L85 PathProgramCache]: Analyzing trace with hash -743724587, now seen corresponding path program 1 times [2022-11-20 11:59:55,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:59:55,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [893166330] [2022-11-20 11:59:55,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:55,250 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:59:55,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:59:55,251 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:59:55,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 11:59:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:55,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-20 11:59:55,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:59:55,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:59:55,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:59:55,862 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 11:59:55,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [893166330] [2022-11-20 11:59:55,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [893166330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:59:55,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:59:55,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:59:55,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957677503] [2022-11-20 11:59:55,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:59:55,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:59:55,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 11:59:55,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:59:55,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:59:55,866 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:56,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:59:56,584 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-11-20 11:59:56,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:59:56,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 11:59:56,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:59:56,586 INFO L225 Difference]: With dead ends: 40 [2022-11-20 11:59:56,586 INFO L226 Difference]: Without dead ends: 34 [2022-11-20 11:59:56,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:59:56,588 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 10 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:59:56,588 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 185 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:59:56,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-20 11:59:56,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-11-20 11:59:56,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 11:59:56,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2022-11-20 11:59:56,603 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 11 [2022-11-20 11:59:56,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:59:56,604 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2022-11-20 11:59:56,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:59:56,604 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2022-11-20 11:59:56,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-20 11:59:56,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:59:56,605 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:59:56,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 11:59:56,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:59:56,806 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:59:56,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:59:56,807 INFO L85 PathProgramCache]: Analyzing trace with hash 830014046, now seen corresponding path program 1 times [2022-11-20 11:59:56,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 11:59:56,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693876118] [2022-11-20 11:59:56,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:59:56,808 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 11:59:56,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 11:59:56,811 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 11:59:56,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 11:59:56,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:59:56,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:59:56,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:00:00,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:00,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:00:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:18,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:00:18,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693876118] [2022-11-20 12:00:18,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693876118] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:00:18,696 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:00:18,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-11-20 12:00:18,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478041642] [2022-11-20 12:00:18,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:00:18,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:00:18,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:00:18,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:00:18,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=238, Unknown=5, NotChecked=0, Total=306 [2022-11-20 12:00:18,699 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:23,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:00:23,707 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2022-11-20 12:00:23,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:00:23,708 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-20 12:00:23,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:00:23,709 INFO L225 Difference]: With dead ends: 46 [2022-11-20 12:00:23,710 INFO L226 Difference]: Without dead ends: 36 [2022-11-20 12:00:23,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=72, Invalid=264, Unknown=6, NotChecked=0, Total=342 [2022-11-20 12:00:23,712 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 14 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:00:23,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 265 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 14 Unchecked, 0.3s Time] [2022-11-20 12:00:23,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-20 12:00:23,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2022-11-20 12:00:23,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 25 states have (on average 1.12) internal successors, (28), 26 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:00:23,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2022-11-20 12:00:23,722 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 12 [2022-11-20 12:00:23,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:00:23,723 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2022-11-20 12:00:23,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:00:23,723 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2022-11-20 12:00:23,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 12:00:23,724 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:00:23,724 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:00:23,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-20 12:00:23,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:00:23,940 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:00:23,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:00:23,941 INFO L85 PathProgramCache]: Analyzing trace with hash -2052984139, now seen corresponding path program 1 times [2022-11-20 12:00:23,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:00:23,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044826401] [2022-11-20 12:00:23,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:00:23,942 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:00:23,942 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:00:23,944 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:00:23,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 12:00:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:00:24,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 12:00:24,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:00:37,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:00:37,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:01:20,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:01:20,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:01:20,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044826401] [2022-11-20 12:01:20,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044826401] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:01:20,743 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:01:20,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2022-11-20 12:01:20,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410719039] [2022-11-20 12:01:20,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:01:20,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 12:01:20,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:01:20,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 12:01:20,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=269, Unknown=3, NotChecked=0, Total=342 [2022-11-20 12:01:20,745 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:23,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:01:29,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:01:31,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:01:31,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:01:31,470 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2022-11-20 12:01:31,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:01:31,471 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-20 12:01:31,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:01:31,472 INFO L225 Difference]: With dead ends: 50 [2022-11-20 12:01:31,472 INFO L226 Difference]: Without dead ends: 40 [2022-11-20 12:01:31,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 53.8s TimeCoverageRelationStatistics Valid=78, Invalid=298, Unknown=4, NotChecked=0, Total=380 [2022-11-20 12:01:31,474 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 3 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:01:31,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 379 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 2 Unknown, 31 Unchecked, 6.7s Time] [2022-11-20 12:01:31,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-20 12:01:31,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2022-11-20 12:01:31,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:01:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2022-11-20 12:01:31,498 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 13 [2022-11-20 12:01:31,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:01:31,499 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2022-11-20 12:01:31,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:01:31,499 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2022-11-20 12:01:31,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 12:01:31,502 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:01:31,503 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:01:31,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:01:31,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:01:31,721 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:01:31,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:01:31,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1518646018, now seen corresponding path program 2 times [2022-11-20 12:01:31,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:01:31,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046836652] [2022-11-20 12:01:31,722 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:01:31,722 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:01:31,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:01:31,724 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:01:31,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 12:01:37,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:01:37,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:01:37,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 12:01:37,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:02:00,581 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:02:00,582 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:03:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:03:46,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:03:46,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046836652] [2022-11-20 12:03:46,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046836652] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:03:46,263 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:03:46,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2022-11-20 12:03:46,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652671409] [2022-11-20 12:03:46,263 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:03:46,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 12:03:46,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:03:46,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 12:03:46,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=363, Unknown=26, NotChecked=0, Total=462 [2022-11-20 12:03:46,265 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:03:48,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result VALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 12:04:01,841 WARN L233 SmtUtils]: Spent 9.89s on a formula simplification. DAG size of input: 25 DAG size of output: 3 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:04:12,874 WARN L233 SmtUtils]: Spent 8.66s on a formula simplification. DAG size of input: 27 DAG size of output: 8 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:04:26,511 WARN L233 SmtUtils]: Spent 10.74s on a formula simplification. DAG size of input: 35 DAG size of output: 17 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:05:13,038 WARN L233 SmtUtils]: Spent 18.26s on a formula simplification. DAG size of input: 35 DAG size of output: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:05:54,020 WARN L233 SmtUtils]: Spent 20.65s on a formula simplification. DAG size of input: 42 DAG size of output: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:06:25,073 WARN L233 SmtUtils]: Spent 7.68s on a formula simplification. DAG size of input: 32 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:06:32,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:06:32,141 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2022-11-20 12:06:32,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 12:06:32,142 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-20 12:06:32,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:06:32,143 INFO L225 Difference]: With dead ends: 52 [2022-11-20 12:06:32,143 INFO L226 Difference]: Without dead ends: 42 [2022-11-20 12:06:32,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 273.8s TimeCoverageRelationStatistics Valid=171, Invalid=845, Unknown=40, NotChecked=0, Total=1056 [2022-11-20 12:06:32,145 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 12 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:06:32,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 407 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 7 Invalid, 0 Unknown, 28 Unchecked, 2.5s Time] [2022-11-20 12:06:32,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-20 12:06:32,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2022-11-20 12:06:32,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.1111111111111112) internal successors, (30), 28 states have internal predecessors, (30), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-20 12:06:32,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2022-11-20 12:06:32,159 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 14 [2022-11-20 12:06:32,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:06:32,160 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2022-11-20 12:06:32,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:06:32,160 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2022-11-20 12:06:32,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 12:06:32,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:06:32,160 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:06:32,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:06:32,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:06:32,361 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:06:32,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:06:32,362 INFO L85 PathProgramCache]: Analyzing trace with hash 571830174, now seen corresponding path program 3 times [2022-11-20 12:06:32,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:06:32,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071707511] [2022-11-20 12:06:32,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:06:32,362 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:06:32,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:06:32,364 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 12:06:32,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c777af4-a2aa-4717-b72c-abc0ef7cfb4c/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 12:07:05,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 12:07:05,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:07:05,184 WARN L261 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 12:07:05,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:09:44,272 WARN L233 SmtUtils]: Spent 10.75s on a formula simplification that was a NOOP. DAG size: 39 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:10:05,828 WARN L837 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_gcd_test_~b#1_29| (_ BitVec 8)) (|ULTIMATE.start_main1_~x~0#1| (_ BitVec 8))) (let ((.cse3 ((_ sign_extend 24) |v_ULTIMATE.start_gcd_test_~b#1_29|))) (let ((.cse2 ((_ sign_extend 24) |ULTIMATE.start_main1_~x~0#1|)) (.cse6 ((_ sign_extend 24) ((_ extract 7 0) (bvneg .cse3))))) (let ((.cse5 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse2 .cse6))))) (let ((.cse4 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse6 .cse5))))) (let ((.cse0 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse5 .cse4))))) (let ((.cse1 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse4 .cse0))))) (and (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse0 .cse1))) (_ bv0 32)) (not (= (_ bv0 32) .cse0)) (not (bvsge .cse2 .cse1)) (bvslt .cse3 (_ bv0 32)) (not (bvslt .cse2 (_ bv0 32))))))))))) is different from false [2022-11-20 12:10:07,863 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_gcd_test_~b#1_29| (_ BitVec 8)) (|ULTIMATE.start_main1_~x~0#1| (_ BitVec 8))) (let ((.cse3 ((_ sign_extend 24) |v_ULTIMATE.start_gcd_test_~b#1_29|))) (let ((.cse2 ((_ sign_extend 24) |ULTIMATE.start_main1_~x~0#1|)) (.cse6 ((_ sign_extend 24) ((_ extract 7 0) (bvneg .cse3))))) (let ((.cse5 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse2 .cse6))))) (let ((.cse4 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse6 .cse5))))) (let ((.cse0 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse5 .cse4))))) (let ((.cse1 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse4 .cse0))))) (and (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse0 .cse1))) (_ bv0 32)) (not (= (_ bv0 32) .cse0)) (not (bvsge .cse2 .cse1)) (bvslt .cse3 (_ bv0 32)) (not (bvslt .cse2 (_ bv0 32))))))))))) is different from true [2022-11-20 12:10:07,864 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:10:07,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:12:54,400 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse5 ((_ sign_extend 24) |c_ULTIMATE.start_gcd_test_~b#1|))) (let ((.cse4 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem ((_ sign_extend 24) |c_ULTIMATE.start_gcd_test_~a#1|) .cse5))))) (let ((.cse3 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse5 .cse4))))) (let ((.cse0 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse4 .cse3))))) (let ((.cse2 ((_ sign_extend 24) |c_ULTIMATE.start_main1_~x~0#1|)) (.cse1 ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse3 .cse0))))) (or (not (= ((_ sign_extend 24) ((_ extract 7 0) (bvsrem .cse0 .cse1))) (_ bv0 32))) (not (bvsgt .cse2 (_ bv0 32))) (bvsge .cse2 .cse1) (= .cse0 (_ bv0 32)))))))) is different from true