./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e46fdb43c1704e8aa9295c108b22e9521ffebb273e9060ca31abf40569948ab2 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 15:54:51,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:54:51,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:54:51,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:54:51,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:54:51,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:54:51,136 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:54:51,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:54:51,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:54:51,140 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:54:51,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:54:51,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:54:51,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:54:51,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:54:51,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:54:51,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:54:51,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:54:51,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:54:51,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:54:51,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:54:51,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:54:51,153 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:54:51,154 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:54:51,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:54:51,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:54:51,158 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:54:51,158 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:54:51,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:54:51,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:54:51,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:54:51,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:54:51,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:54:51,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:54:51,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:54:51,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:54:51,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:54:51,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:54:51,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:54:51,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:54:51,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:54:51,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:54:51,167 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 15:54:51,186 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:54:51,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:54:51,186 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:54:51,187 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:54:51,187 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:54:51,187 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:54:51,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:54:51,188 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:54:51,188 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:54:51,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:54:51,189 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:54:51,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:54:51,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:54:51,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:54:51,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:54:51,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:54:51,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:54:51,195 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:54:51,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:54:51,195 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:54:51,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:54:51,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:54:51,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:54:51,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:54:51,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:54:51,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:54:51,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:54:51,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:54:51,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:54:51,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:54:51,198 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:54:51,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:54:51,198 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:54:51,198 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:54:51,198 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:54:51,199 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e46fdb43c1704e8aa9295c108b22e9521ffebb273e9060ca31abf40569948ab2 [2022-12-13 15:54:51,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:54:51,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:54:51,410 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:54:51,411 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:54:51,411 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:54:51,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i [2022-12-13 15:54:53,972 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:54:54,164 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:54:54,165 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i [2022-12-13 15:54:54,171 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/data/125eeff70/2f8cfbb633494aa4a2740e944686d33a/FLAG23789fce6 [2022-12-13 15:54:54,555 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/data/125eeff70/2f8cfbb633494aa4a2740e944686d33a [2022-12-13 15:54:54,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:54:54,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:54:54,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:54:54,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:54:54,561 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:54:54,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:54:54" (1/1) ... [2022-12-13 15:54:54,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7df80032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:54, skipping insertion in model container [2022-12-13 15:54:54,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:54:54" (1/1) ... [2022-12-13 15:54:54,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:54:54,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:54:54,691 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_a14524c7-2ae2-4724-981e-5f588a92c8c8/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i[951,964] [2022-12-13 15:54:54,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:54:54,712 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:54:54,721 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_a14524c7-2ae2-4724-981e-5f588a92c8c8/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i[951,964] [2022-12-13 15:54:54,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:54:54,736 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:54:54,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:54 WrapperNode [2022-12-13 15:54:54,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:54:54,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:54:54,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:54:54,738 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:54:54,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:54" (1/1) ... [2022-12-13 15:54:54,747 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:54" (1/1) ... [2022-12-13 15:54:54,759 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51 [2022-12-13 15:54:54,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:54:54,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:54:54,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:54:54,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:54:54,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:54" (1/1) ... [2022-12-13 15:54:54,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:54" (1/1) ... [2022-12-13 15:54:54,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:54" (1/1) ... [2022-12-13 15:54:54,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:54" (1/1) ... [2022-12-13 15:54:54,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:54" (1/1) ... [2022-12-13 15:54:54,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:54" (1/1) ... [2022-12-13 15:54:54,775 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:54" (1/1) ... [2022-12-13 15:54:54,775 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:54" (1/1) ... [2022-12-13 15:54:54,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:54:54,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:54:54,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:54:54,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:54:54,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:54" (1/1) ... [2022-12-13 15:54:54,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:54:54,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:54:54,804 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:54:54,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:54:54,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:54:54,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:54:54,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:54:54,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:54:54,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 15:54:54,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 15:54:54,880 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:54:54,881 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:54:54,985 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:54:54,990 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:54:54,991 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-13 15:54:54,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:54:54 BoogieIcfgContainer [2022-12-13 15:54:54,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:54:54,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:54:54,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:54:54,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:54:54,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:54:54" (1/3) ... [2022-12-13 15:54:55,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4364d471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:54:54, skipping insertion in model container [2022-12-13 15:54:55,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:54:54" (2/3) ... [2022-12-13 15:54:55,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4364d471 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:54:55, skipping insertion in model container [2022-12-13 15:54:55,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:54:54" (3/3) ... [2022-12-13 15:54:55,001 INFO L112 eAbstractionObserver]: Analyzing ICFG divbin2_unwindbound5.i [2022-12-13 15:54:55,015 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:54:55,015 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 15:54:55,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:54:55,054 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;@8f0ccc1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:54:55,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 15:54:55,057 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 15:54:55,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 15:54:55,062 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:54:55,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:54:55,063 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:54:55,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:54:55,067 INFO L85 PathProgramCache]: Analyzing trace with hash 553144752, now seen corresponding path program 1 times [2022-12-13 15:54:55,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:54:55,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215118580] [2022-12-13 15:54:55,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:54:55,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:54:55,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:54:55,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:54:55,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215118580] [2022-12-13 15:54:55,169 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:54:55,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869790915] [2022-12-13 15:54:55,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:54:55,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:54:55,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:54:55,171 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:54:55,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:54:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:54:55,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 15:54:55,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:54:55,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:54:55,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:54:55,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869790915] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:54:55,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:54:55,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-13 15:54:55,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625917464] [2022-12-13 15:54:55,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:54:55,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 15:54:55,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:54:55,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 15:54:55,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:54:55,262 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:54:55,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:54:55,276 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2022-12-13 15:54:55,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 15:54:55,278 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-13 15:54:55,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:54:55,283 INFO L225 Difference]: With dead ends: 37 [2022-12-13 15:54:55,283 INFO L226 Difference]: Without dead ends: 17 [2022-12-13 15:54:55,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-13 15:54:55,288 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:54:55,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:54:55,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-13 15:54:55,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-13 15:54:55,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 15:54:55,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2022-12-13 15:54:55,313 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 8 [2022-12-13 15:54:55,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:54:55,314 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2022-12-13 15:54:55,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:54:55,314 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2022-12-13 15:54:55,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-13 15:54:55,314 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:54:55,315 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:54:55,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:54:55,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 15:54:55,517 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:54:55,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:54:55,519 INFO L85 PathProgramCache]: Analyzing trace with hash -803059042, now seen corresponding path program 1 times [2022-12-13 15:54:55,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:54:55,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503520819] [2022-12-13 15:54:55,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:54:55,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:54:55,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:54:55,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:54:55,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503520819] [2022-12-13 15:54:55,607 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-12-13 15:54:55,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401346532] [2022-12-13 15:54:55,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:54:55,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:54:55,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:54:55,612 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:54:55,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:54:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:54:55,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 15:54:55,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:54:55,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:54:55,759 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:54:55,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401346532] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:54:55,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:54:55,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:54:55,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127509002] [2022-12-13 15:54:55,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:54:55,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 15:54:55,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:54:55,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 15:54:55,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:54:55,763 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:54:55,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:54:55,777 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2022-12-13 15:54:55,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 15:54:55,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-12-13 15:54:55,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:54:55,778 INFO L225 Difference]: With dead ends: 31 [2022-12-13 15:54:55,778 INFO L226 Difference]: Without dead ends: 19 [2022-12-13 15:54:55,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 15:54:55,780 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:54:55,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:54:55,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-12-13 15:54:55,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-12-13 15:54:55,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 15:54:55,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2022-12-13 15:54:55,786 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2022-12-13 15:54:55,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:54:55,786 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2022-12-13 15:54:55,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:54:55,787 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2022-12-13 15:54:55,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 15:54:55,787 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:54:55,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:54:55,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:54:55,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:54:55,990 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:54:55,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:54:55,993 INFO L85 PathProgramCache]: Analyzing trace with hash 549278495, now seen corresponding path program 1 times [2022-12-13 15:54:55,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:54:55,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306564592] [2022-12-13 15:54:55,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:54:55,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:54:56,036 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:54:56,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963209211] [2022-12-13 15:54:56,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:54:56,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:54:56,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:54:56,041 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:54:56,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 15:54:56,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:54:56,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 15:54:56,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:54:56,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:54:56,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:54:56,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:54:56,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306564592] [2022-12-13 15:54:56,191 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:54:56,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963209211] [2022-12-13 15:54:56,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963209211] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:54:56,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:54:56,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 15:54:56,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542161067] [2022-12-13 15:54:56,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:54:56,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:54:56,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:54:56,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:54:56,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:54:56,194 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:54:56,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:54:56,213 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-12-13 15:54:56,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:54:56,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-13 15:54:56,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:54:56,214 INFO L225 Difference]: With dead ends: 30 [2022-12-13 15:54:56,214 INFO L226 Difference]: Without dead ends: 23 [2022-12-13 15:54:56,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:54:56,216 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:54:56,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 56 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:54:56,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-12-13 15:54:56,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-12-13 15:54:56,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 15:54:56,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2022-12-13 15:54:56,221 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 11 [2022-12-13 15:54:56,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:54:56,222 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2022-12-13 15:54:56,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:54:56,222 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2022-12-13 15:54:56,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 15:54:56,223 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:54:56,223 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:54:56,227 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 15:54:56,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:54:56,425 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:54:56,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:54:56,427 INFO L85 PathProgramCache]: Analyzing trace with hash 551065955, now seen corresponding path program 1 times [2022-12-13 15:54:56,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:54:56,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117416607] [2022-12-13 15:54:56,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:54:56,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:54:56,470 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:54:56,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527133377] [2022-12-13 15:54:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:54:56,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:54:56,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:54:56,473 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:54:56,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 15:54:56,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:54:56,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-13 15:54:56,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:54:56,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:54:56,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:54:56,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:54:56,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117416607] [2022-12-13 15:54:56,615 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:54:56,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527133377] [2022-12-13 15:54:56,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527133377] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:54:56,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:54:56,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 15:54:56,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47292591] [2022-12-13 15:54:56,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:54:56,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:54:56,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:54:56,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:54:56,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:54:56,617 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:54:56,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:54:56,669 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2022-12-13 15:54:56,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 15:54:56,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-12-13 15:54:56,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:54:56,670 INFO L225 Difference]: With dead ends: 31 [2022-12-13 15:54:56,670 INFO L226 Difference]: Without dead ends: 28 [2022-12-13 15:54:56,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:54:56,672 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:54:56,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 59 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:54:56,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-12-13 15:54:56,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-12-13 15:54:56,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 15:54:56,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2022-12-13 15:54:56,678 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 11 [2022-12-13 15:54:56,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:54:56,678 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2022-12-13 15:54:56,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:54:56,679 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2022-12-13 15:54:56,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-13 15:54:56,679 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:54:56,679 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:54:56,684 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 15:54:56,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:54:56,881 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:54:56,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:54:56,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1647533572, now seen corresponding path program 1 times [2022-12-13 15:54:56,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:54:56,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174906854] [2022-12-13 15:54:56,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:54:56,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:54:56,927 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:54:56,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [375824928] [2022-12-13 15:54:56,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:54:56,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:54:56,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:54:56,932 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:54:56,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 15:54:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:54:57,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 15:54:57,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:54:57,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:54:57,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:54:57,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:54:57,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:54:57,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174906854] [2022-12-13 15:54:57,067 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:54:57,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375824928] [2022-12-13 15:54:57,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375824928] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:54:57,067 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:54:57,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-12-13 15:54:57,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083352204] [2022-12-13 15:54:57,068 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:54:57,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 15:54:57,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:54:57,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 15:54:57,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:54:57,069 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:54:57,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:54:57,122 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2022-12-13 15:54:57,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 15:54:57,122 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-12-13 15:54:57,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:54:57,122 INFO L225 Difference]: With dead ends: 62 [2022-12-13 15:54:57,123 INFO L226 Difference]: Without dead ends: 50 [2022-12-13 15:54:57,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:54:57,123 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 38 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:54:57,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 107 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:54:57,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-13 15:54:57,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2022-12-13 15:54:57,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.3) internal successors, (39), 31 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 15:54:57,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2022-12-13 15:54:57,130 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 13 [2022-12-13 15:54:57,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:54:57,130 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2022-12-13 15:54:57,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:54:57,131 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2022-12-13 15:54:57,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-13 15:54:57,131 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:54:57,131 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:54:57,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-13 15:54:57,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:54:57,333 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:54:57,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:54:57,334 INFO L85 PathProgramCache]: Analyzing trace with hash -791761799, now seen corresponding path program 1 times [2022-12-13 15:54:57,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:54:57,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103805073] [2022-12-13 15:54:57,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:54:57,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:54:57,379 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:54:57,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1110793029] [2022-12-13 15:54:57,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:54:57,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:54:57,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:54:57,385 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:54:57,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 15:54:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:54:57,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 15:54:57,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:54:57,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:54:57,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:54:57,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:54:57,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:54:57,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103805073] [2022-12-13 15:54:57,537 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:54:57,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110793029] [2022-12-13 15:54:57,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110793029] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:54:57,538 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:54:57,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-12-13 15:54:57,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681979406] [2022-12-13 15:54:57,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:54:57,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:54:57,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:54:57,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:54:57,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:54:57,539 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:54:57,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:54:57,595 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2022-12-13 15:54:57,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 15:54:57,596 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-13 15:54:57,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:54:57,596 INFO L225 Difference]: With dead ends: 72 [2022-12-13 15:54:57,597 INFO L226 Difference]: Without dead ends: 65 [2022-12-13 15:54:57,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-12-13 15:54:57,597 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 49 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:54:57,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 104 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:54:57,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-12-13 15:54:57,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2022-12-13 15:54:57,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 51 states have internal predecessors, (65), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 15:54:57,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 76 transitions. [2022-12-13 15:54:57,604 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 76 transitions. Word has length 14 [2022-12-13 15:54:57,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:54:57,604 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 76 transitions. [2022-12-13 15:54:57,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:54:57,604 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 76 transitions. [2022-12-13 15:54:57,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-13 15:54:57,605 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:54:57,605 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:54:57,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 15:54:57,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-13 15:54:57,807 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:54:57,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:54:57,808 INFO L85 PathProgramCache]: Analyzing trace with hash -789974339, now seen corresponding path program 1 times [2022-12-13 15:54:57,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:54:57,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817819013] [2022-12-13 15:54:57,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:54:57,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:54:57,840 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:54:57,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1346809184] [2022-12-13 15:54:57,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:54:57,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:54:57,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:54:57,844 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:54:57,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 15:54:57,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:54:57,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 15:54:57,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:54:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-13 15:54:57,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:54:57,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:54:57,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817819013] [2022-12-13 15:54:57,991 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:54:57,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346809184] [2022-12-13 15:54:57,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346809184] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:54:57,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:54:57,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:54:57,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620672843] [2022-12-13 15:54:57,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:54:57,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:54:57,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:54:57,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:54:57,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:54:57,993 INFO L87 Difference]: Start difference. First operand 60 states and 76 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:54:58,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:54:58,035 INFO L93 Difference]: Finished difference Result 94 states and 119 transitions. [2022-12-13 15:54:58,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:54:58,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-12-13 15:54:58,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:54:58,037 INFO L225 Difference]: With dead ends: 94 [2022-12-13 15:54:58,037 INFO L226 Difference]: Without dead ends: 89 [2022-12-13 15:54:58,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:54:58,038 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:54:58,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 50 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:54:58,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-12-13 15:54:58,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2022-12-13 15:54:58,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.2794117647058822) internal successors, (87), 71 states have internal predecessors, (87), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-12-13 15:54:58,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2022-12-13 15:54:58,050 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 14 [2022-12-13 15:54:58,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:54:58,050 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2022-12-13 15:54:58,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 15:54:58,050 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2022-12-13 15:54:58,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-13 15:54:58,051 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:54:58,051 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:54:58,056 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 15:54:58,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:54:58,253 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:54:58,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:54:58,255 INFO L85 PathProgramCache]: Analyzing trace with hash 2118336314, now seen corresponding path program 1 times [2022-12-13 15:54:58,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:54:58,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530231113] [2022-12-13 15:54:58,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:54:58,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:54:58,286 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:54:58,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [853014690] [2022-12-13 15:54:58,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:54:58,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:54:58,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:54:58,291 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:54:58,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 15:54:58,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:54:58,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 15:54:58,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:54:58,385 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:54:58,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:54:58,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:54:58,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530231113] [2022-12-13 15:54:58,385 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:54:58,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853014690] [2022-12-13 15:54:58,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853014690] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:54:58,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:54:58,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 15:54:58,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173434724] [2022-12-13 15:54:58,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:54:58,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:54:58,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:54:58,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:54:58,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:54:58,388 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 15:54:58,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:54:58,406 INFO L93 Difference]: Finished difference Result 137 states and 164 transitions. [2022-12-13 15:54:58,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:54:58,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-12-13 15:54:58,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:54:58,408 INFO L225 Difference]: With dead ends: 137 [2022-12-13 15:54:58,408 INFO L226 Difference]: Without dead ends: 67 [2022-12-13 15:54:58,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-13 15:54:58,409 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:54:58,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:54:58,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-12-13 15:54:58,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-12-13 15:54:58,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 56 states have internal predecessors, (68), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 15:54:58,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2022-12-13 15:54:58,417 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 20 [2022-12-13 15:54:58,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:54:58,417 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2022-12-13 15:54:58,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 15:54:58,418 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2022-12-13 15:54:58,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-13 15:54:58,418 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:54:58,418 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:54:58,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 15:54:58,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:54:58,620 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:54:58,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:54:58,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1149777120, now seen corresponding path program 1 times [2022-12-13 15:54:58,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:54:58,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699073909] [2022-12-13 15:54:58,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:54:58,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:54:58,665 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:54:58,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1951014763] [2022-12-13 15:54:58,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:54:58,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:54:58,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:54:58,670 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:54:58,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 15:54:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:54:58,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-13 15:54:58,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:54:58,989 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:54:58,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:55:29,087 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse1 (mod |c_ULTIMATE.start_main_~b~0#1| 2147483648)) (.cse2 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (or (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296) .cse0)) (= (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* 2 .cse1 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) .cse0) (<= (* 2 .cse1) .cse2) (not (<= (mod |c_ULTIMATE.start_main_~b~0#1| 4294967296) .cse2)))) is different from true [2022-12-13 15:55:53,904 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-12-13 15:55:53,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:55:53,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699073909] [2022-12-13 15:55:53,904 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:55:53,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951014763] [2022-12-13 15:55:53,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1951014763] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:55:53,905 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:55:53,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 18 [2022-12-13 15:55:53,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3116997] [2022-12-13 15:55:53,905 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:55:53,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 15:55:53,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:55:53,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 15:55:53,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=213, Unknown=3, NotChecked=30, Total=306 [2022-12-13 15:55:53,907 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 16 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 15:55:56,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 15:55:58,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 15:56:01,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 15:56:03,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 15:56:06,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 15:56:11,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 15:56:11,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:56:11,881 INFO L93 Difference]: Finished difference Result 114 states and 133 transitions. [2022-12-13 15:56:11,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 15:56:11,882 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 16 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-12-13 15:56:11,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:56:11,883 INFO L225 Difference]: With dead ends: 114 [2022-12-13 15:56:11,883 INFO L226 Difference]: Without dead ends: 80 [2022-12-13 15:56:11,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=85, Invalid=296, Unknown=3, NotChecked=36, Total=420 [2022-12-13 15:56:11,884 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 25 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 16 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2022-12-13 15:56:11,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 123 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 169 Invalid, 5 Unknown, 48 Unchecked, 16.4s Time] [2022-12-13 15:56:11,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-12-13 15:56:11,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2022-12-13 15:56:11,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 61 states have internal predecessors, (69), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2022-12-13 15:56:11,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2022-12-13 15:56:11,891 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 23 [2022-12-13 15:56:11,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:56:11,891 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2022-12-13 15:56:11,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 16 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 15:56:11,892 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2022-12-13 15:56:11,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-12-13 15:56:11,892 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:56:11,892 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:56:11,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 15:56:12,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:56:12,094 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:56:12,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:56:12,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1350184604, now seen corresponding path program 1 times [2022-12-13 15:56:12,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:56:12,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596617166] [2022-12-13 15:56:12,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:56:12,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:56:12,138 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:56:12,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1628492796] [2022-12-13 15:56:12,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:56:12,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:56:12,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:56:12,140 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:56:12,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 15:56:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:56:12,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 36 conjunts are in the unsatisfiable core [2022-12-13 15:56:12,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:56:12,510 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:56:12,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:56:45,093 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse1 (mod |c_ULTIMATE.start_main_~b~0#1| 2147483648)) (.cse2 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (or (not (= (mod (+ (* 2 |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296) .cse0)) (= (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* 2 .cse1 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296) .cse0) (<= (* 2 .cse1) .cse2) (not (<= (mod |c_ULTIMATE.start_main_~b~0#1| 4294967296) .cse2)))) is different from true [2022-12-13 15:57:24,161 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse1 (mod |c_ULTIMATE.start_main_~b~0#1| 1073741824)) (.cse2 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (or (= .cse0 (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* .cse1 4 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)) (not (<= (* 2 (mod |c_ULTIMATE.start_main_~b~0#1| 2147483648)) .cse2)) (not (= (mod (+ (* |c_ULTIMATE.start_main_~b~0#1| 4 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296) .cse0)) (<= (* .cse1 4) .cse2))) is different from true [2022-12-13 15:58:08,128 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse2 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse0 (mod |c_ULTIMATE.start_main_~b~0#1| 536870912)) (.cse1 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (or (<= (* 8 .cse0) .cse1) (not (= .cse2 (mod (+ (* 8 |c_ULTIMATE.start_main_~b~0#1| |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296))) (= .cse2 (mod (+ (* 8 .cse0 |c_ULTIMATE.start_main_~q~0#1|) |c_ULTIMATE.start_main_~r~0#1|) 4294967296)) (not (<= (mod |c_ULTIMATE.start_main_~b~0#1| 4294967296) .cse1)) (not (<= (* (mod |c_ULTIMATE.start_main_~b~0#1| 1073741824) 4) .cse1)))) is different from true [2022-12-13 15:58:41,482 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 18 not checked. [2022-12-13 15:58:41,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:58:41,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596617166] [2022-12-13 15:58:41,483 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:58:41,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628492796] [2022-12-13 15:58:41,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628492796] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:58:41,483 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:58:41,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2022-12-13 15:58:41,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043586506] [2022-12-13 15:58:41,483 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:58:41,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-13 15:58:41,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:58:41,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-13 15:58:41,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=272, Unknown=3, NotChecked=108, Total=462 [2022-12-13 15:58:41,484 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 20 states have internal predecessors, (49), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 15:58:43,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 15:58:47,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 15:58:49,899 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 15:58:53,116 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 15:58:57,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 15:59:00,333 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 15:59:02,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:59:02,762 INFO L93 Difference]: Finished difference Result 145 states and 176 transitions. [2022-12-13 15:59:02,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 15:59:02,763 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 20 states have internal predecessors, (49), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2022-12-13 15:59:02,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:59:02,763 INFO L225 Difference]: With dead ends: 145 [2022-12-13 15:59:02,763 INFO L226 Difference]: Without dead ends: 121 [2022-12-13 15:59:02,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 15.1s TimeCoverageRelationStatistics Valid=107, Invalid=364, Unknown=3, NotChecked=126, Total=600 [2022-12-13 15:59:02,764 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 45 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 31 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 237 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2022-12-13 15:59:02,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 220 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 285 Invalid, 4 Unknown, 237 Unchecked, 19.4s Time] [2022-12-13 15:59:02,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-12-13 15:59:02,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-12-13 15:59:02,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 97 states have (on average 1.1855670103092784) internal successors, (115), 101 states have internal predecessors, (115), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-13 15:59:02,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 144 transitions. [2022-12-13 15:59:02,786 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 144 transitions. Word has length 29 [2022-12-13 15:59:02,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:59:02,786 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 144 transitions. [2022-12-13 15:59:02,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 20 states have internal predecessors, (49), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 15:59:02,786 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 144 transitions. [2022-12-13 15:59:02,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-12-13 15:59:02,788 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:59:02,788 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-12-13 15:59:02,792 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-13 15:59:02,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 15:59:02,990 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:59:02,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:59:02,991 INFO L85 PathProgramCache]: Analyzing trace with hash -815549923, now seen corresponding path program 2 times [2022-12-13 15:59:02,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:59:02,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85144900] [2022-12-13 15:59:02,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:59:02,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:59:03,024 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:59:03,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [293900276] [2022-12-13 15:59:03,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:59:03,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:59:03,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:59:03,027 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:59:03,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 15:59:03,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:59:03,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:59:03,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 15:59:03,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:59:03,298 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 15:59:03,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:59:03,590 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 15:59:03,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:59:03,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85144900] [2022-12-13 15:59:03,590 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:59:03,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293900276] [2022-12-13 15:59:03,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293900276] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:59:03,590 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:59:03,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2022-12-13 15:59:03,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483855296] [2022-12-13 15:59:03,591 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:59:03,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 15:59:03,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:59:03,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 15:59:03,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:59:03,592 INFO L87 Difference]: Start difference. First operand 121 states and 144 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 15:59:03,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:59:03,909 INFO L93 Difference]: Finished difference Result 150 states and 180 transitions. [2022-12-13 15:59:03,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:59:03,910 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 32 [2022-12-13 15:59:03,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:59:03,912 INFO L225 Difference]: With dead ends: 150 [2022-12-13 15:59:03,912 INFO L226 Difference]: Without dead ends: 118 [2022-12-13 15:59:03,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:59:03,913 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 3 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 15:59:03,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 120 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 15:59:03,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-12-13 15:59:03,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 101. [2022-12-13 15:59:03,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 85 states have internal predecessors, (97), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 15:59:03,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 122 transitions. [2022-12-13 15:59:03,925 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 122 transitions. Word has length 32 [2022-12-13 15:59:03,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:59:03,926 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 122 transitions. [2022-12-13 15:59:03,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 15:59:03,926 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 122 transitions. [2022-12-13 15:59:03,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-13 15:59:03,928 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:59:03,928 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:59:03,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-13 15:59:04,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-13 15:59:04,130 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:59:04,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:59:04,131 INFO L85 PathProgramCache]: Analyzing trace with hash 81521713, now seen corresponding path program 1 times [2022-12-13 15:59:04,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:59:04,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458323180] [2022-12-13 15:59:04,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:59:04,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:59:04,144 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:59:04,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1030053963] [2022-12-13 15:59:04,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:59:04,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:59:04,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:59:04,145 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:59:04,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 15:59:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:59:04,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 15:59:04,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:59:04,197 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-13 15:59:04,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:59:04,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:59:04,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458323180] [2022-12-13 15:59:04,197 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:59:04,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030053963] [2022-12-13 15:59:04,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030053963] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:59:04,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:59:04,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:59:04,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120193435] [2022-12-13 15:59:04,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:59:04,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:59:04,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:59:04,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:59:04,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:59:04,199 INFO L87 Difference]: Start difference. First operand 101 states and 122 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 15:59:04,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:59:04,228 INFO L93 Difference]: Finished difference Result 143 states and 169 transitions. [2022-12-13 15:59:04,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 15:59:04,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 34 [2022-12-13 15:59:04,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:59:04,229 INFO L225 Difference]: With dead ends: 143 [2022-12-13 15:59:04,229 INFO L226 Difference]: Without dead ends: 101 [2022-12-13 15:59:04,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:59:04,229 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:59:04,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:59:04,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-12-13 15:59:04,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-12-13 15:59:04,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 81 states have (on average 1.1728395061728396) internal successors, (95), 85 states have internal predecessors, (95), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 15:59:04,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 120 transitions. [2022-12-13 15:59:04,240 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 120 transitions. Word has length 34 [2022-12-13 15:59:04,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:59:04,240 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 120 transitions. [2022-12-13 15:59:04,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-12-13 15:59:04,240 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 120 transitions. [2022-12-13 15:59:04,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-12-13 15:59:04,241 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:59:04,241 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:59:04,245 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-13 15:59:04,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:59:04,442 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:59:04,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:59:04,442 INFO L85 PathProgramCache]: Analyzing trace with hash -2053011364, now seen corresponding path program 2 times [2022-12-13 15:59:04,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:59:04,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230836865] [2022-12-13 15:59:04,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:59:04,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:59:04,450 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:59:04,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [161606329] [2022-12-13 15:59:04,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 15:59:04,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:59:04,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:59:04,451 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:59:04,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 15:59:04,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 15:59:04,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 15:59:04,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 15:59:04,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:59:04,540 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 40 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 15:59:04,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 15:59:04,596 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 42 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:59:04,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:59:04,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230836865] [2022-12-13 15:59:04,596 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 15:59:04,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161606329] [2022-12-13 15:59:04,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161606329] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 15:59:04,596 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 15:59:04,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 9 [2022-12-13 15:59:04,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76381619] [2022-12-13 15:59:04,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 15:59:04,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:59:04,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:59:04,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:59:04,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:59:04,598 INFO L87 Difference]: Start difference. First operand 101 states and 120 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 15:59:04,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:59:04,643 INFO L93 Difference]: Finished difference Result 124 states and 146 transitions. [2022-12-13 15:59:04,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 15:59:04,644 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2022-12-13 15:59:04,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:59:04,644 INFO L225 Difference]: With dead ends: 124 [2022-12-13 15:59:04,645 INFO L226 Difference]: Without dead ends: 98 [2022-12-13 15:59:04,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2022-12-13 15:59:04,645 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 29 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:59:04,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 92 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:59:04,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-12-13 15:59:04,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-12-13 15:59:04,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 78 states have (on average 1.1538461538461537) internal successors, (90), 82 states have internal predecessors, (90), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 9 states have call predecessors, (12), 12 states have call successors, (12) [2022-12-13 15:59:04,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 115 transitions. [2022-12-13 15:59:04,655 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 115 transitions. Word has length 35 [2022-12-13 15:59:04,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:59:04,655 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 115 transitions. [2022-12-13 15:59:04,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 15:59:04,655 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 115 transitions. [2022-12-13 15:59:04,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-12-13 15:59:04,656 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:59:04,656 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:59:04,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-13 15:59:04,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-13 15:59:04,858 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:59:04,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:59:04,859 INFO L85 PathProgramCache]: Analyzing trace with hash 2145998975, now seen corresponding path program 3 times [2022-12-13 15:59:04,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:59:04,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937913575] [2022-12-13 15:59:04,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:59:04,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:59:04,890 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 15:59:04,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281023665] [2022-12-13 15:59:04,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 15:59:04,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:59:04,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:59:04,894 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:59:04,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 16:01:48,108 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-13 16:01:48,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:01:48,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 42 conjunts are in the unsatisfiable core [2022-12-13 16:01:48,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:01:50,156 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:01:50,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:03:32,769 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 24 proven. 13 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-13 16:03:32,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:03:32,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937913575] [2022-12-13 16:03:32,769 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:03:32,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281023665] [2022-12-13 16:03:32,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281023665] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:03:32,769 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:03:32,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2022-12-13 16:03:32,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613617633] [2022-12-13 16:03:32,770 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:03:32,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 16:03:32,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:03:32,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 16:03:32,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=440, Unknown=6, NotChecked=0, Total=552 [2022-12-13 16:03:32,772 INFO L87 Difference]: Start difference. First operand 98 states and 115 transitions. Second operand has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 22 states have internal predecessors, (56), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 16:04:52,314 WARN L233 SmtUtils]: Spent 1.22m on a formula simplification. DAG size of input: 87 DAG size of output: 72 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:04:54,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:04:56,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:04:58,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:05:00,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:05:04,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:05:08,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:05:10,959 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:05:15,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:05:18,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:05:20,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:05:32,774 WARN L233 SmtUtils]: Spent 8.69s on a formula simplification. DAG size of input: 63 DAG size of output: 58 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:05:35,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:05:37,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:05:39,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:05:41,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:05:44,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:05:48,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:05:52,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:05:54,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:05:59,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:06:03,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:06:05,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:06:43,704 WARN L233 SmtUtils]: Spent 25.56s on a formula simplification that was a NOOP. DAG size: 44 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:06:45,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:06:47,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:06:50,299 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:06:52,313 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:06:54,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:07:09,405 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 35 DAG size of output: 34 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-13 16:07:12,038 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:07:13,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:07:16,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:07:24,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:07:26,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:07:30,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:07:45,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:07:47,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:07:49,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:07:51,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:07:52,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:07:54,184 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:07:56,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:07:58,523 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:08:00,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:08:01,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-12-13 16:08:02,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:08:02,899 INFO L93 Difference]: Finished difference Result 157 states and 191 transitions. [2022-12-13 16:08:02,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 16:08:02,900 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 22 states have internal predecessors, (56), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 41 [2022-12-13 16:08:02,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:08:02,901 INFO L225 Difference]: With dead ends: 157 [2022-12-13 16:08:02,901 INFO L226 Difference]: Without dead ends: 150 [2022-12-13 16:08:02,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 215.6s TimeCoverageRelationStatistics Valid=213, Invalid=828, Unknown=15, NotChecked=0, Total=1056 [2022-12-13 16:08:02,901 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 64 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 41 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 102.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 103.2s IncrementalHoareTripleChecker+Time [2022-12-13 16:08:02,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 238 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 310 Invalid, 26 Unknown, 0 Unchecked, 103.2s Time] [2022-12-13 16:08:02,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-12-13 16:08:02,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 112. [2022-12-13 16:08:02,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 89 states have (on average 1.1573033707865168) internal successors, (103), 93 states have internal predecessors, (103), 15 states have call successors, (15), 7 states have call predecessors, (15), 7 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2022-12-13 16:08:02,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 132 transitions. [2022-12-13 16:08:02,923 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 132 transitions. Word has length 41 [2022-12-13 16:08:02,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:08:02,923 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 132 transitions. [2022-12-13 16:08:02,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.3333333333333335) internal successors, (56), 22 states have internal predecessors, (56), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 16:08:02,923 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 132 transitions. [2022-12-13 16:08:02,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-13 16:08:02,923 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 16:08:02,924 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:02,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-12-13 16:08:03,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-13 16:08:03,125 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 16:08:03,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 16:08:03,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1615195818, now seen corresponding path program 4 times [2022-12-13 16:08:03,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 16:08:03,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401132569] [2022-12-13 16:08:03,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 16:08:03,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 16:08:03,150 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 16:08:03,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [514744649] [2022-12-13 16:08:03,151 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-13 16:08:03,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 16:08:03,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 16:08:03,154 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 16:08:03,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-13 16:08:03,208 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-13 16:08:03,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 16:08:03,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 16:08:03,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 16:08:03,256 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 16:08:03,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 16:08:03,302 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 16:08:03,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 16:08:03,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401132569] [2022-12-13 16:08:03,303 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 16:08:03,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514744649] [2022-12-13 16:08:03,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514744649] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 16:08:03,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 16:08:03,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 9 [2022-12-13 16:08:03,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902930772] [2022-12-13 16:08:03,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 16:08:03,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 16:08:03,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 16:08:03,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 16:08:03,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-12-13 16:08:03,304 INFO L87 Difference]: Start difference. First operand 112 states and 132 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 16:08:03,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 16:08:03,342 INFO L93 Difference]: Finished difference Result 118 states and 137 transitions. [2022-12-13 16:08:03,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 16:08:03,343 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 44 [2022-12-13 16:08:03,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 16:08:03,344 INFO L225 Difference]: With dead ends: 118 [2022-12-13 16:08:03,344 INFO L226 Difference]: Without dead ends: 0 [2022-12-13 16:08:03,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 72 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2022-12-13 16:08:03,345 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 9 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 16:08:03,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 90 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 16:08:03,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-13 16:08:03,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-13 16:08:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 16:08:03,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-13 16:08:03,346 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2022-12-13 16:08:03,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 16:08:03,346 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-13 16:08:03,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 16:08:03,346 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-13 16:08:03,346 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-13 16:08:03,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 16:08:03,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-13 16:08:03,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-13 16:08:03,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-13 16:08:13,784 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-13 16:08:13,784 INFO L899 garLoopResultBuilder]: For program point L48(line 48) no Hoare annotation was computed. [2022-12-13 16:08:13,784 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-13 16:08:13,784 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 26 50) the Hoare annotation is: true [2022-12-13 16:08:13,784 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 47) no Hoare annotation was computed. [2022-12-13 16:08:13,784 INFO L895 garLoopResultBuilder]: At program point L38-2(lines 38 47) the Hoare annotation is: (= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) (mod (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~q~0#1|)) 4294967296)) [2022-12-13 16:08:13,784 INFO L899 garLoopResultBuilder]: For program point L34-1(lines 34 37) no Hoare annotation was computed. [2022-12-13 16:08:13,784 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-13 16:08:13,784 INFO L895 garLoopResultBuilder]: At program point L34-3(lines 34 37) the Hoare annotation is: (let ((.cse4 (mod |ULTIMATE.start_main_~r~0#1| 4294967296))) (let ((.cse2 (<= 1 .cse4)) (.cse0 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse3 (= |ULTIMATE.start_main_~B~0#1| 1))) (or (and .cse0 .cse1 (<= 5 ~counter~0)) (and (<= 2 ~counter~0) (= |ULTIMATE.start_main_~b~0#1| 4) .cse2 .cse0 .cse1 .cse3 (<= ~counter~0 2)) (and (= |ULTIMATE.start_main_~b~0#1| 8) .cse0 .cse1 (<= 4 .cse4) .cse3 (<= 3 ~counter~0)) (and (<= 0 ~counter~0) (<= ~counter~0 0) .cse0 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~b~0#1|) .cse1 .cse3) (and (<= ~counter~0 1) (<= 1 ~counter~0) .cse2 .cse0 .cse1 (= 2 |ULTIMATE.start_main_~b~0#1|) .cse3) (and .cse0 .cse1 (<= 4 ~counter~0) .cse3 (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0) (= (mod (div (- |ULTIMATE.start_main_~b~0#1|) (- 2)) 2) 0))))) [2022-12-13 16:08:13,784 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-13 16:08:13,784 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 46) no Hoare annotation was computed. [2022-12-13 16:08:13,784 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 38 47) the Hoare annotation is: (let ((.cse8 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (.cse16 (mod |ULTIMATE.start_main_~r~0#1| 4294967296)) (.cse13 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~r~0#1|))) (let ((.cse10 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse11 (= .cse13 |ULTIMATE.start_main_~A~0#1|)) (.cse2 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse15 (< ~counter~0 4)) (.cse0 (not (<= .cse8 .cse16))) (.cse5 (<= 1 .cse16)) (.cse1 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse6 (= 2 |ULTIMATE.start_main_~b~0#1|)) (.cse12 (<= 4 ~counter~0)) (.cse4 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse14 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (or (and .cse0 (<= ~counter~0 1) .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse5 .cse1 .cse3 .cse6 .cse4 (<= ~counter~0 2)) (let ((.cse9 (mod .cse13 4294967296)) (.cse7 (div |ULTIMATE.start_main_~b~0#1| 2))) (and (< .cse7 1073741824) (<= .cse8 .cse9) .cse10 .cse11 .cse12 (<= 0 .cse7) .cse4 (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0) (<= (+ .cse9 1) (+ (* 4 .cse7) (* (div (+ (- .cse7) 1073741823) 1073741824) 4294967296))))) (and (not (<= 2 .cse14)) .cse15 .cse10 .cse11 .cse2 (<= 1 .cse14) .cse4) (and (= |ULTIMATE.start_main_~b~0#1| 8) .cse0 .cse1 .cse3 (<= 4 .cse16) .cse12 .cse4) (and .cse0 (= |ULTIMATE.start_main_~b~0#1| 4) .cse15 .cse5 .cse1 .cse3 .cse4 (<= 3 ~counter~0)) (and .cse0 .cse5 .cse1 .cse3 .cse6 .cse12 .cse4) (and (<= 5 ~counter~0) (= .cse14 (mod (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~q~0#1|)) 4294967296)))))) [2022-12-13 16:08:13,785 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (let ((.cse16 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse9 (mod |ULTIMATE.start_main_~b~0#1| 4294967296)) (.cse6 (mod |ULTIMATE.start_main_~r~0#1| 4294967296))) (let ((.cse4 (= 2 |ULTIMATE.start_main_~b~0#1|)) (.cse0 (not (<= .cse9 .cse6))) (.cse1 (<= 1 .cse6)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (= |ULTIMATE.start_main_~A~0#1| |ULTIMATE.start_main_~r~0#1|)) (.cse8 (= |ULTIMATE.start_main_~B~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse10 (< ~counter~0 5)) (.cse12 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse13 (= .cse16 |ULTIMATE.start_main_~A~0#1|)) (.cse5 (= |ULTIMATE.start_main_~B~0#1| 1)) (.cse7 (<= 5 ~counter~0))) (or (and .cse0 (< ~counter~0 4) .cse1 .cse2 .cse3 .cse4 .cse5) (and (= |ULTIMATE.start_main_~b~0#1| 8) .cse0 .cse2 .cse3 (<= 4 .cse6) .cse5 .cse7) (and .cse2 .cse8 .cse3 (< .cse6 .cse9) .cse5 (<= ~counter~0 2)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse7) (and .cse0 (= |ULTIMATE.start_main_~b~0#1| 4) .cse1 .cse2 .cse3 (<= 4 ~counter~0) .cse10 .cse5) (let ((.cse11 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (and (not (<= 2 .cse11)) .cse12 .cse13 .cse8 (<= 1 .cse11) .cse10 .cse5)) (let ((.cse15 (mod .cse16 4294967296)) (.cse14 (div |ULTIMATE.start_main_~b~0#1| 2))) (and (< .cse14 1073741824) (<= .cse9 .cse15) .cse12 .cse13 (<= 0 .cse14) .cse5 .cse7 (= (mod |ULTIMATE.start_main_~b~0#1| 2) 0) (<= (+ .cse15 1) (+ (* 4 .cse14) (* (div (+ (- .cse14) 1073741823) 1073741824) 4294967296)))))))) [2022-12-13 16:08:13,785 INFO L899 garLoopResultBuilder]: For program point L39-1(lines 38 47) no Hoare annotation was computed. [2022-12-13 16:08:13,785 INFO L899 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2022-12-13 16:08:13,785 INFO L899 garLoopResultBuilder]: For program point L19-2(lines 18 24) no Hoare annotation was computed. [2022-12-13 16:08:13,785 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 18 24) no Hoare annotation was computed. [2022-12-13 16:08:13,785 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 18 24) the Hoare annotation is: true [2022-12-13 16:08:13,785 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 21) no Hoare annotation was computed. [2022-12-13 16:08:13,785 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 22) no Hoare annotation was computed. [2022-12-13 16:08:13,785 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2022-12-13 16:08:13,787 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 16:08:13,788 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 16:08:13,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 04:08:13 BoogieIcfgContainer [2022-12-13 16:08:13,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 16:08:13,801 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 16:08:13,801 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 16:08:13,801 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 16:08:13,802 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:54:54" (3/4) ... [2022-12-13 16:08:13,804 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-13 16:08:13,808 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-12-13 16:08:13,811 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2022-12-13 16:08:13,811 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-12-13 16:08:13,811 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-13 16:08:13,811 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-13 16:08:13,832 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 16:08:13,832 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 16:08:13,832 INFO L158 Benchmark]: Toolchain (without parser) took 799274.83ms. Allocated memory was 121.6MB in the beginning and 157.3MB in the end (delta: 35.7MB). Free memory was 87.8MB in the beginning and 105.5MB in the end (delta: -17.6MB). Peak memory consumption was 19.0MB. Max. memory is 16.1GB. [2022-12-13 16:08:13,832 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 121.6MB. Free memory is still 92.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 16:08:13,833 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.47ms. Allocated memory is still 121.6MB. Free memory was 87.5MB in the beginning and 77.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 16:08:13,833 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.35ms. Allocated memory is still 121.6MB. Free memory was 77.0MB in the beginning and 75.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:08:13,833 INFO L158 Benchmark]: Boogie Preprocessor took 16.52ms. Allocated memory is still 121.6MB. Free memory was 75.5MB in the beginning and 74.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 16:08:13,833 INFO L158 Benchmark]: RCFGBuilder took 215.34ms. Allocated memory is still 121.6MB. Free memory was 74.5MB in the beginning and 64.5MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 16:08:13,833 INFO L158 Benchmark]: TraceAbstraction took 798805.74ms. Allocated memory was 121.6MB in the beginning and 157.3MB in the end (delta: 35.7MB). Free memory was 63.8MB in the beginning and 107.6MB in the end (delta: -43.7MB). Peak memory consumption was 69.3MB. Max. memory is 16.1GB. [2022-12-13 16:08:13,833 INFO L158 Benchmark]: Witness Printer took 30.70ms. Allocated memory is still 157.3MB. Free memory was 107.6MB in the beginning and 105.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 16:08:13,834 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 121.6MB. Free memory is still 92.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 178.47ms. Allocated memory is still 121.6MB. Free memory was 87.5MB in the beginning and 77.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.35ms. Allocated memory is still 121.6MB. Free memory was 77.0MB in the beginning and 75.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.52ms. Allocated memory is still 121.6MB. Free memory was 75.5MB in the beginning and 74.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 215.34ms. Allocated memory is still 121.6MB. Free memory was 74.5MB in the beginning and 64.5MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 798805.74ms. Allocated memory was 121.6MB in the beginning and 157.3MB in the end (delta: 35.7MB). Free memory was 63.8MB in the beginning and 107.6MB in the end (delta: -43.7MB). Peak memory consumption was 69.3MB. Max. memory is 16.1GB. * Witness Printer took 30.70ms. Allocated memory is still 157.3MB. Free memory was 107.6MB in the beginning and 105.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 798.7s, OverallIterations: 15, TraceHistogramMax: 6, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 310.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 10.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 mSolverCounterUnknown, 291 SdHoareTripleChecker+Valid, 139.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 279 mSDsluCounter, 1439 SdHoareTripleChecker+Invalid, 138.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 285 IncrementalHoareTripleChecker+Unchecked, 1082 mSDsCounter, 114 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1096 IncrementalHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 114 mSolverCounterUnsat, 357 mSDtfsCounter, 1096 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 577 GetRequests, 421 SyntacticMatches, 20 SemanticMatches, 136 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 243.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=10, InterpolantAutomatonStates: 126, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 85 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 70 PreInvPairs, 108 NumberOfFragments, 624 HoareAnnotationTreeSize, 70 FomulaSimplifications, 251 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 6 FomulaSimplificationsInter, 2301 FormulaSimplificationTreeSizeReductionInter, 10.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 163.7s SatisfiabilityAnalysisTime, 310.2s InterpolantComputationTime, 357 NumberOfCodeBlocks, 351 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 547 ConstructedInterpolants, 0 QuantifiedInterpolants, 5585 SizeOfPredicates, 28 NumberOfNonLiveVariables, 1217 ConjunctsInSsa, 202 ConjunctsInUnsatCore, 23 InterpolantComputations, 7 PerfectInterpolantSequences, 337/454 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((((((((!(b % 4294967296 <= r % 4294967296) && counter <= 1) && q == 0) && B == b) && A == r) && B == 1) || ((((((!(b % 4294967296 <= r % 4294967296) && 1 <= r % 4294967296) && q == 0) && A == r) && 2 == b) && B == 1) && counter <= 2)) || ((((((((b / 2 < 1073741824 && b % 4294967296 <= (b + r) % 4294967296) && q == 1) && b + r == A) && 4 <= counter) && 0 <= b / 2) && B == 1) && b % 2 == 0) && (b + r) % 4294967296 + 1 <= 4 * (b / 2) + (-(b / 2) + 1073741823) / 1073741824 * 4294967296)) || ((((((!(2 <= A % 4294967296) && counter < 4) && q == 1) && b + r == A) && B == b) && 1 <= A % 4294967296) && B == 1)) || ((((((b == 8 && !(b % 4294967296 <= r % 4294967296)) && q == 0) && A == r) && 4 <= r % 4294967296) && 4 <= counter) && B == 1)) || (((((((!(b % 4294967296 <= r % 4294967296) && b == 4) && counter < 4) && 1 <= r % 4294967296) && q == 0) && A == r) && B == 1) && 3 <= counter)) || ((((((!(b % 4294967296 <= r % 4294967296) && 1 <= r % 4294967296) && q == 0) && A == r) && 2 == b) && 4 <= counter) && B == 1)) || (5 <= counter && A % 4294967296 == (r + b * q) % 4294967296) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((q == 0 && A == r) && 5 <= counter) || ((((((2 <= counter && b == 4) && 1 <= r % 4294967296) && q == 0) && A == r) && B == 1) && counter <= 2)) || (((((b == 8 && q == 0) && A == r) && 4 <= r % 4294967296) && B == 1) && 3 <= counter)) || (((((0 <= counter && counter <= 0) && q == 0) && B == b) && A == r) && B == 1)) || ((((((counter <= 1 && 1 <= counter) && 1 <= r % 4294967296) && q == 0) && A == r) && 2 == b) && B == 1)) || (((((q == 0 && A == r) && 4 <= counter) && B == 1) && b % 2 == 0) && -b / -2 % 2 == 0) RESULT: Ultimate proved your program to be correct! [2022-12-13 16:08:14,043 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2022-12-13 16:08:14,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a14524c7-2ae2-4724-981e-5f588a92c8c8/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE