./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/egcd2-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/egcd2-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ed6536c9cb0e4b2be9a327fc4a25c6bfba6e98b1dfb78e314dd25bca8cbdb087 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 23:46:50,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 23:46:50,156 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 23:46:50,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 23:46:50,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 23:46:50,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 23:46:50,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 23:46:50,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 23:46:50,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 23:46:50,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 23:46:50,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 23:46:50,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 23:46:50,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 23:46:50,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 23:46:50,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 23:46:50,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 23:46:50,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 23:46:50,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 23:46:50,195 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 23:46:50,197 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 23:46:50,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 23:46:50,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 23:46:50,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 23:46:50,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 23:46:50,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 23:46:50,205 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 23:46:50,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 23:46:50,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 23:46:50,206 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 23:46:50,207 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 23:46:50,207 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 23:46:50,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 23:46:50,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 23:46:50,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 23:46:50,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 23:46:50,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 23:46:50,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 23:46:50,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 23:46:50,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 23:46:50,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 23:46:50,212 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 23:46:50,213 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 23:46:50,237 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 23:46:50,237 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 23:46:50,238 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 23:46:50,238 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 23:46:50,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 23:46:50,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 23:46:50,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 23:46:50,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 23:46:50,240 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 23:46:50,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 23:46:50,240 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 23:46:50,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 23:46:50,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 23:46:50,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 23:46:50,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 23:46:50,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 23:46:50,241 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 23:46:50,241 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 23:46:50,241 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 23:46:50,242 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 23:46:50,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 23:46:50,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 23:46:50,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 23:46:50,242 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 23:46:50,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:46:50,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 23:46:50,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 23:46:50,243 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 23:46:50,243 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 23:46:50,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 23:46:50,244 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 23:46:50,244 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 23:46:50,244 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 23:46:50,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 23:46:50,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed6536c9cb0e4b2be9a327fc4a25c6bfba6e98b1dfb78e314dd25bca8cbdb087 [2021-12-06 23:46:50,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 23:46:50,447 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 23:46:50,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 23:46:50,449 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 23:46:50,450 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 23:46:50,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/nla-digbench/egcd2-ll.c [2021-12-06 23:46:50,493 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/data/129b0bef5/fd940ab88af54d64afb758b968379461/FLAGfd67a22f2 [2021-12-06 23:46:50,853 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 23:46:50,853 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/sv-benchmarks/c/nla-digbench/egcd2-ll.c [2021-12-06 23:46:50,858 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/data/129b0bef5/fd940ab88af54d64afb758b968379461/FLAGfd67a22f2 [2021-12-06 23:46:50,870 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/data/129b0bef5/fd940ab88af54d64afb758b968379461 [2021-12-06 23:46:50,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 23:46:50,873 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 23:46:50,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 23:46:50,874 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 23:46:50,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 23:46:50,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:46:50" (1/1) ... [2021-12-06 23:46:50,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27a41323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:50, skipping insertion in model container [2021-12-06 23:46:50,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 11:46:50" (1/1) ... [2021-12-06 23:46:50,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 23:46:50,897 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 23:46:51,022 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/sv-benchmarks/c/nla-digbench/egcd2-ll.c[490,503] [2021-12-06 23:46:51,035 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:46:51,041 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 23:46:51,049 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/sv-benchmarks/c/nla-digbench/egcd2-ll.c[490,503] [2021-12-06 23:46:51,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 23:46:51,065 INFO L208 MainTranslator]: Completed translation [2021-12-06 23:46:51,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:51 WrapperNode [2021-12-06 23:46:51,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 23:46:51,066 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 23:46:51,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 23:46:51,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 23:46:51,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:51" (1/1) ... [2021-12-06 23:46:51,077 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:51" (1/1) ... [2021-12-06 23:46:51,091 INFO L137 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 75 [2021-12-06 23:46:51,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 23:46:51,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 23:46:51,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 23:46:51,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 23:46:51,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:51" (1/1) ... [2021-12-06 23:46:51,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:51" (1/1) ... [2021-12-06 23:46:51,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:51" (1/1) ... [2021-12-06 23:46:51,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:51" (1/1) ... [2021-12-06 23:46:51,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:51" (1/1) ... [2021-12-06 23:46:51,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:51" (1/1) ... [2021-12-06 23:46:51,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:51" (1/1) ... [2021-12-06 23:46:51,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 23:46:51,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 23:46:51,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 23:46:51,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 23:46:51,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:51" (1/1) ... [2021-12-06 23:46:51,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 23:46:51,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:51,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 23:46:51,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 23:46:51,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 23:46:51,165 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 23:46:51,165 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 23:46:51,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 23:46:51,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 23:46:51,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 23:46:51,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-06 23:46:51,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-06 23:46:51,212 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 23:46:51,213 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 23:46:51,305 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 23:46:51,310 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 23:46:51,310 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-06 23:46:51,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:46:51 BoogieIcfgContainer [2021-12-06 23:46:51,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 23:46:51,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 23:46:51,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 23:46:51,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 23:46:51,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 11:46:50" (1/3) ... [2021-12-06 23:46:51,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b371eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:46:51, skipping insertion in model container [2021-12-06 23:46:51,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 11:46:51" (2/3) ... [2021-12-06 23:46:51,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43b371eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 11:46:51, skipping insertion in model container [2021-12-06 23:46:51,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:46:51" (3/3) ... [2021-12-06 23:46:51,318 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll.c [2021-12-06 23:46:51,322 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 23:46:51,322 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 23:46:51,359 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 23:46:51,365 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 23:46:51,365 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 23:46:51,379 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.5) internal successors, (27), 20 states have internal predecessors, (27), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-12-06 23:46:51,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-06 23:46:51,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:51,384 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:51,384 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:51,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:51,388 INFO L85 PathProgramCache]: Analyzing trace with hash 223354930, now seen corresponding path program 1 times [2021-12-06 23:46:51,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:51,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073058817] [2021-12-06 23:46:51,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:51,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:51,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 23:46:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:51,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 23:46:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:51,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 23:46:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:51,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 23:46:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:51,524 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 23:46:51,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:51,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073058817] [2021-12-06 23:46:51,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073058817] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 23:46:51,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 23:46:51,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 23:46:51,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368314690] [2021-12-06 23:46:51,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:51,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 23:46:51,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:51,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 23:46:51,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 23:46:51,553 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.5) internal successors, (27), 20 states have internal predecessors, (27), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 23:46:51,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:51,570 INFO L93 Difference]: Finished difference Result 61 states and 100 transitions. [2021-12-06 23:46:51,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 23:46:51,571 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2021-12-06 23:46:51,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:51,583 INFO L225 Difference]: With dead ends: 61 [2021-12-06 23:46:51,583 INFO L226 Difference]: Without dead ends: 28 [2021-12-06 23:46:51,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 23:46:51,590 INFO L933 BasicCegarLoop]: 41 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, 41 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:51,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:46:51,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-06 23:46:51,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-12-06 23:46:51,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 15 states have (on average 1.2) internal successors, (18), 17 states have internal predecessors, (18), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-06 23:46:51,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2021-12-06 23:46:51,623 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 28 [2021-12-06 23:46:51,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:51,623 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2021-12-06 23:46:51,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 23:46:51,623 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2021-12-06 23:46:51,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 23:46:51,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:51,625 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:51,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 23:46:51,625 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:51,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:51,626 INFO L85 PathProgramCache]: Analyzing trace with hash 727709964, now seen corresponding path program 1 times [2021-12-06 23:46:51,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:51,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536259880] [2021-12-06 23:46:51,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:51,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:51,642 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:51,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963787197] [2021-12-06 23:46:51,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:51,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:51,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:51,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:51,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 23:46:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:51,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 23:46:51,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:51,781 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:46:51,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:46:51,872 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:46:51,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:51,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536259880] [2021-12-06 23:46:51,872 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:51,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963787197] [2021-12-06 23:46:51,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963787197] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:46:51,873 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:46:51,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-12-06 23:46:51,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189446315] [2021-12-06 23:46:51,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:46:51,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:46:51,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:51,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:46:51,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 23:46:51,878 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 23:46:51,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:51,945 INFO L93 Difference]: Finished difference Result 45 states and 60 transitions. [2021-12-06 23:46:51,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 23:46:51,945 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2021-12-06 23:46:51,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:51,946 INFO L225 Difference]: With dead ends: 45 [2021-12-06 23:46:51,946 INFO L226 Difference]: Without dead ends: 37 [2021-12-06 23:46:51,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:46:51,948 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 19 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:51,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 124 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:46:51,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-06 23:46:51,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2021-12-06 23:46:51,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 18 states have internal predecessors, (20), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-06 23:46:51,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2021-12-06 23:46:51,960 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 29 [2021-12-06 23:46:51,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:51,960 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2021-12-06 23:46:51,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 23:46:51,960 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2021-12-06 23:46:51,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-06 23:46:51,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:51,961 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:51,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 23:46:52,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:52,163 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:52,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:52,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1088429638, now seen corresponding path program 1 times [2021-12-06 23:46:52,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:52,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484058375] [2021-12-06 23:46:52,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:52,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:52,203 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:52,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379894094] [2021-12-06 23:46:52,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:52,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:52,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:52,207 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:52,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 23:46:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:52,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 23:46:52,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:52,500 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:46:52,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:46:52,553 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 23:46:52,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:52,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484058375] [2021-12-06 23:46:52,553 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:52,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379894094] [2021-12-06 23:46:52,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379894094] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 23:46:52,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:46:52,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2021-12-06 23:46:52,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189208213] [2021-12-06 23:46:52,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:52,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:46:52,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:52,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:46:52,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:46:52,555 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 23:46:52,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:52,587 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2021-12-06 23:46:52,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:46:52,587 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2021-12-06 23:46:52,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:52,588 INFO L225 Difference]: With dead ends: 36 [2021-12-06 23:46:52,588 INFO L226 Difference]: Without dead ends: 34 [2021-12-06 23:46:52,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:46:52,589 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:52,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 110 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:46:52,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-06 23:46:52,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-12-06 23:46:52,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 20 states have (on average 1.15) internal successors, (23), 21 states have internal predecessors, (23), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-06 23:46:52,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2021-12-06 23:46:52,596 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 30 [2021-12-06 23:46:52,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:52,596 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2021-12-06 23:46:52,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-06 23:46:52,596 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2021-12-06 23:46:52,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-06 23:46:52,597 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:52,597 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:52,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 23:46:52,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:52,799 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:52,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:52,801 INFO L85 PathProgramCache]: Analyzing trace with hash 161014808, now seen corresponding path program 1 times [2021-12-06 23:46:52,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:52,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709103213] [2021-12-06 23:46:52,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:52,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:52,838 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:52,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608572687] [2021-12-06 23:46:52,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:52,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:52,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:52,842 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:52,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 23:46:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:52,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-06 23:46:52,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:53,115 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 23:46:53,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:46:53,182 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-12-06 23:46:53,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:53,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709103213] [2021-12-06 23:46:53,183 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:53,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608572687] [2021-12-06 23:46:53,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608572687] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 23:46:53,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:46:53,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2021-12-06 23:46:53,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720498266] [2021-12-06 23:46:53,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:53,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:46:53,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:53,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:46:53,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 23:46:53,186 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:46:53,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:53,216 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2021-12-06 23:46:53,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:46:53,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 35 [2021-12-06 23:46:53,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:53,221 INFO L225 Difference]: With dead ends: 47 [2021-12-06 23:46:53,222 INFO L226 Difference]: Without dead ends: 45 [2021-12-06 23:46:53,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:46:53,223 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 7 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:53,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 137 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:46:53,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-06 23:46:53,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2021-12-06 23:46:53,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-06 23:46:53,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 56 transitions. [2021-12-06 23:46:53,234 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 56 transitions. Word has length 35 [2021-12-06 23:46:53,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:53,234 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 56 transitions. [2021-12-06 23:46:53,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 23:46:53,234 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 56 transitions. [2021-12-06 23:46:53,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 23:46:53,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:53,235 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:53,255 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 23:46:53,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:53,438 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:53,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:53,439 INFO L85 PathProgramCache]: Analyzing trace with hash -2062939834, now seen corresponding path program 1 times [2021-12-06 23:46:53,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:53,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771450926] [2021-12-06 23:46:53,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:53,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:53,485 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:53,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1839208932] [2021-12-06 23:46:53,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:53,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:53,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:53,490 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:53,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 23:46:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:53,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-06 23:46:53,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:53,839 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 23:46:53,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:46:53,916 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 23:46:53,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:53,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771450926] [2021-12-06 23:46:53,916 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:53,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839208932] [2021-12-06 23:46:53,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839208932] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 23:46:53,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:46:53,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 11 [2021-12-06 23:46:53,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519562600] [2021-12-06 23:46:53,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 23:46:53,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 23:46:53,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:53,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 23:46:53,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:46:53,918 INFO L87 Difference]: Start difference. First operand 44 states and 56 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 23:46:53,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:53,950 INFO L93 Difference]: Finished difference Result 51 states and 62 transitions. [2021-12-06 23:46:53,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 23:46:53,951 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2021-12-06 23:46:53,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:53,952 INFO L225 Difference]: With dead ends: 51 [2021-12-06 23:46:53,952 INFO L226 Difference]: Without dead ends: 49 [2021-12-06 23:46:53,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:46:53,953 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 7 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:53,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 128 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 23:46:53,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-12-06 23:46:53,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2021-12-06 23:46:53,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 29 states have internal predecessors, (32), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-06 23:46:53,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2021-12-06 23:46:53,960 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 40 [2021-12-06 23:46:53,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:53,961 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2021-12-06 23:46:53,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-06 23:46:53,961 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2021-12-06 23:46:53,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 23:46:53,962 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:53,962 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:53,981 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 23:46:54,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:54,165 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:54,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:54,166 INFO L85 PathProgramCache]: Analyzing trace with hash -98301800, now seen corresponding path program 1 times [2021-12-06 23:46:54,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:54,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276433452] [2021-12-06 23:46:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:54,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:54,195 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:54,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687426215] [2021-12-06 23:46:54,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:54,197 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:54,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:54,199 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:54,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 23:46:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:54,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 23:46:54,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:54,437 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-06 23:46:54,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:46:54,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:54,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276433452] [2021-12-06 23:46:54,653 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:54,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687426215] [2021-12-06 23:46:54,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687426215] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:46:54,653 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:46:54,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-12-06 23:46:54,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267273315] [2021-12-06 23:46:54,654 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 23:46:54,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 23:46:54,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:54,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 23:46:54,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:46:54,655 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 23:46:54,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:54,740 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2021-12-06 23:46:54,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 23:46:54,740 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2021-12-06 23:46:54,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:54,741 INFO L225 Difference]: With dead ends: 55 [2021-12-06 23:46:54,742 INFO L226 Difference]: Without dead ends: 53 [2021-12-06 23:46:54,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-12-06 23:46:54,743 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:54,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 128 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:46:54,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-12-06 23:46:54,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2021-12-06 23:46:54,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 32 states have internal predecessors, (35), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-12-06 23:46:54,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2021-12-06 23:46:54,753 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 45 [2021-12-06 23:46:54,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:54,754 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2021-12-06 23:46:54,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 23:46:54,754 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2021-12-06 23:46:54,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-06 23:46:54,756 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:54,756 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:54,778 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 23:46:54,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-06 23:46:54,957 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:54,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:54,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1721617041, now seen corresponding path program 1 times [2021-12-06 23:46:54,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:54,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034020480] [2021-12-06 23:46:54,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:54,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:54,974 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:54,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [174033238] [2021-12-06 23:46:54,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:54,975 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:54,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:54,977 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:54,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 23:46:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:55,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 23:46:55,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:55,093 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-06 23:46:55,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:46:55,172 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-06 23:46:55,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:55,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034020480] [2021-12-06 23:46:55,172 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:55,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [174033238] [2021-12-06 23:46:55,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [174033238] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:46:55,173 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:46:55,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2021-12-06 23:46:55,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224988282] [2021-12-06 23:46:55,173 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:46:55,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 23:46:55,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:55,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 23:46:55,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-06 23:46:55,175 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-06 23:46:55,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:55,283 INFO L93 Difference]: Finished difference Result 99 states and 137 transitions. [2021-12-06 23:46:55,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:46:55,283 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 54 [2021-12-06 23:46:55,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:55,285 INFO L225 Difference]: With dead ends: 99 [2021-12-06 23:46:55,285 INFO L226 Difference]: Without dead ends: 91 [2021-12-06 23:46:55,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-12-06 23:46:55,286 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 30 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:55,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 288 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 23:46:55,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-12-06 23:46:55,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 82. [2021-12-06 23:46:55,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 45 states have (on average 1.2) internal successors, (54), 46 states have internal predecessors, (54), 30 states have call successors, (30), 6 states have call predecessors, (30), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2021-12-06 23:46:55,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 113 transitions. [2021-12-06 23:46:55,299 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 113 transitions. Word has length 54 [2021-12-06 23:46:55,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:55,300 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 113 transitions. [2021-12-06 23:46:55,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 8 states have internal predecessors, (24), 5 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-06 23:46:55,300 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 113 transitions. [2021-12-06 23:46:55,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-06 23:46:55,301 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:55,301 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:55,332 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 23:46:55,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:55,502 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:55,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:55,503 INFO L85 PathProgramCache]: Analyzing trace with hash -653850053, now seen corresponding path program 1 times [2021-12-06 23:46:55,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:55,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907625351] [2021-12-06 23:46:55,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:55,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:55,517 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:55,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758686508] [2021-12-06 23:46:55,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:55,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:55,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:55,520 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:55,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 23:46:55,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:46:55,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-06 23:46:55,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:55,693 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-06 23:46:55,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:46:55,793 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-06 23:46:55,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:55,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907625351] [2021-12-06 23:46:55,793 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:55,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758686508] [2021-12-06 23:46:55,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758686508] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:46:55,793 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:46:55,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-12-06 23:46:55,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763105322] [2021-12-06 23:46:55,794 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:46:55,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 23:46:55,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:55,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 23:46:55,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:46:55,795 INFO L87 Difference]: Start difference. First operand 82 states and 113 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-06 23:46:56,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:46:56,065 INFO L93 Difference]: Finished difference Result 125 states and 178 transitions. [2021-12-06 23:46:56,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 23:46:56,065 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 60 [2021-12-06 23:46:56,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:46:56,068 INFO L225 Difference]: With dead ends: 125 [2021-12-06 23:46:56,073 INFO L226 Difference]: Without dead ends: 121 [2021-12-06 23:46:56,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 109 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:46:56,074 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 30 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:46:56,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 243 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:46:56,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-12-06 23:46:56,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 89. [2021-12-06 23:46:56,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 49 states have (on average 1.183673469387755) internal successors, (58), 51 states have internal predecessors, (58), 32 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (31), 30 states have call predecessors, (31), 31 states have call successors, (31) [2021-12-06 23:46:56,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2021-12-06 23:46:56,097 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 60 [2021-12-06 23:46:56,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:46:56,098 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2021-12-06 23:46:56,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 11 states have internal predecessors, (34), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2021-12-06 23:46:56,098 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2021-12-06 23:46:56,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 23:46:56,100 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:46:56,100 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:46:56,133 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 23:46:56,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:56,302 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:46:56,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:46:56,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1044201731, now seen corresponding path program 2 times [2021-12-06 23:46:56,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:46:56,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50925108] [2021-12-06 23:46:56,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:46:56,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:46:56,328 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:46:56,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1173723334] [2021-12-06 23:46:56,329 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:46:56,329 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:46:56,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:46:56,332 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:46:56,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 23:46:56,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:46:56,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:46:56,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-06 23:46:56,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:46:56,738 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-06 23:46:56,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:46:56,996 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-06 23:46:56,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:46:56,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50925108] [2021-12-06 23:46:56,997 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:46:56,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173723334] [2021-12-06 23:46:56,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173723334] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:46:56,997 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:46:56,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 17 [2021-12-06 23:46:56,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311950993] [2021-12-06 23:46:56,997 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:46:56,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 23:46:56,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:46:56,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 23:46:56,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-12-06 23:46:56,999 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand has 17 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 9 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20) [2021-12-06 23:47:05,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:47:05,875 INFO L93 Difference]: Finished difference Result 236 states and 352 transitions. [2021-12-06 23:47:05,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 23:47:05,875 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 9 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20) Word has length 65 [2021-12-06 23:47:05,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:47:05,879 INFO L225 Difference]: With dead ends: 236 [2021-12-06 23:47:05,879 INFO L226 Difference]: Without dead ends: 234 [2021-12-06 23:47:05,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=305, Invalid=955, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 23:47:05,880 INFO L933 BasicCegarLoop]: 58 mSDtfsCounter, 106 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-06 23:47:05,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 421 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-06 23:47:05,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-12-06 23:47:05,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 186. [2021-12-06 23:47:05,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 100 states have (on average 1.23) internal successors, (123), 103 states have internal predecessors, (123), 75 states have call successors, (75), 10 states have call predecessors, (75), 10 states have return successors, (74), 72 states have call predecessors, (74), 74 states have call successors, (74) [2021-12-06 23:47:05,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 272 transitions. [2021-12-06 23:47:05,921 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 272 transitions. Word has length 65 [2021-12-06 23:47:05,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:47:05,921 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 272 transitions. [2021-12-06 23:47:05,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 15 states have internal predecessors, (33), 9 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (20), 8 states have call predecessors, (20), 9 states have call successors, (20) [2021-12-06 23:47:05,922 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 272 transitions. [2021-12-06 23:47:05,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 23:47:05,923 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:47:05,923 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:47:05,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 23:47:06,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-06 23:47:06,125 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:47:06,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:47:06,127 INFO L85 PathProgramCache]: Analyzing trace with hash 635379451, now seen corresponding path program 3 times [2021-12-06 23:47:06,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:47:06,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028715872] [2021-12-06 23:47:06,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:47:06,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:47:06,160 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:47:06,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [822927790] [2021-12-06 23:47:06,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 23:47:06,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:47:06,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:47:06,163 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:47:06,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 23:47:06,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 23:47:06,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:47:06,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 23:47:06,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:47:06,480 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 31 proven. 8 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-06 23:47:06,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:47:06,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:47:06,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028715872] [2021-12-06 23:47:06,550 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:47:06,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [822927790] [2021-12-06 23:47:06,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [822927790] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 23:47:06,551 INFO L186 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2021-12-06 23:47:06,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-12-06 23:47:06,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504575047] [2021-12-06 23:47:06,551 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2021-12-06 23:47:06,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 23:47:06,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:47:06,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 23:47:06,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-06 23:47:06,552 INFO L87 Difference]: Start difference. First operand 186 states and 272 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-06 23:47:06,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:47:06,797 INFO L93 Difference]: Finished difference Result 219 states and 312 transitions. [2021-12-06 23:47:06,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 23:47:06,797 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 70 [2021-12-06 23:47:06,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:47:06,800 INFO L225 Difference]: With dead ends: 219 [2021-12-06 23:47:06,800 INFO L226 Difference]: Without dead ends: 217 [2021-12-06 23:47:06,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-12-06 23:47:06,801 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 22 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 23:47:06,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 214 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 23:47:06,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-12-06 23:47:06,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 213. [2021-12-06 23:47:06,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 116 states have (on average 1.2155172413793103) internal successors, (141), 119 states have internal predecessors, (141), 83 states have call successors, (83), 13 states have call predecessors, (83), 13 states have return successors, (82), 80 states have call predecessors, (82), 82 states have call successors, (82) [2021-12-06 23:47:06,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 306 transitions. [2021-12-06 23:47:06,829 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 306 transitions. Word has length 70 [2021-12-06 23:47:06,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:47:06,829 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 306 transitions. [2021-12-06 23:47:06,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-12-06 23:47:06,829 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 306 transitions. [2021-12-06 23:47:06,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-06 23:47:06,830 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:47:06,830 INFO L514 BasicCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:47:06,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-06 23:47:07,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 23:47:07,032 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:47:07,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:47:07,034 INFO L85 PathProgramCache]: Analyzing trace with hash -375209714, now seen corresponding path program 1 times [2021-12-06 23:47:07,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:47:07,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28931467] [2021-12-06 23:47:07,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:47:07,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:47:07,059 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:47:07,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668218159] [2021-12-06 23:47:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:47:07,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:47:07,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:47:07,063 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:47:07,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 23:47:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:47:07,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-06 23:47:07,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:47:07,409 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 30 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-06 23:47:07,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:47:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 30 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-06 23:47:07,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:47:07,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28931467] [2021-12-06 23:47:07,799 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:47:07,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668218159] [2021-12-06 23:47:07,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668218159] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:47:07,799 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:47:07,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2021-12-06 23:47:07,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275804677] [2021-12-06 23:47:07,799 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:47:07,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 23:47:07,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:47:07,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 23:47:07,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-12-06 23:47:07,800 INFO L87 Difference]: Start difference. First operand 213 states and 306 transitions. Second operand has 19 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 11 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2021-12-06 23:47:09,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:47:09,725 INFO L93 Difference]: Finished difference Result 295 states and 425 transitions. [2021-12-06 23:47:09,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-06 23:47:09,726 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 11 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) Word has length 76 [2021-12-06 23:47:09,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:47:09,728 INFO L225 Difference]: With dead ends: 295 [2021-12-06 23:47:09,728 INFO L226 Difference]: Without dead ends: 287 [2021-12-06 23:47:09,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=248, Invalid=1084, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 23:47:09,729 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 58 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 23:47:09,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 290 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 23:47:09,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2021-12-06 23:47:09,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 216. [2021-12-06 23:47:09,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 120 states have (on average 1.1666666666666667) internal successors, (140), 123 states have internal predecessors, (140), 79 states have call successors, (79), 16 states have call predecessors, (79), 16 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2021-12-06 23:47:09,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 297 transitions. [2021-12-06 23:47:09,767 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 297 transitions. Word has length 76 [2021-12-06 23:47:09,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:47:09,768 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 297 transitions. [2021-12-06 23:47:09,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 18 states have internal predecessors, (36), 11 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (22), 9 states have call predecessors, (22), 9 states have call successors, (22) [2021-12-06 23:47:09,768 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 297 transitions. [2021-12-06 23:47:09,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-06 23:47:09,769 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:47:09,769 INFO L514 BasicCegarLoop]: trace histogram [12, 11, 11, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:47:09,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 23:47:09,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-06 23:47:09,971 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:47:09,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:47:09,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1261079706, now seen corresponding path program 1 times [2021-12-06 23:47:09,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:47:09,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095778242] [2021-12-06 23:47:09,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:47:09,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:47:09,994 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:47:09,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1478418161] [2021-12-06 23:47:09,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:47:09,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:47:09,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:47:09,995 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:47:09,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 23:47:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 23:47:10,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 59 conjunts are in the unsatisfiable core [2021-12-06 23:47:10,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:47:10,543 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 84 proven. 40 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-12-06 23:47:10,543 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:47:15,662 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 87 proven. 34 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2021-12-06 23:47:15,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:47:15,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095778242] [2021-12-06 23:47:15,662 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:47:15,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478418161] [2021-12-06 23:47:15,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478418161] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:47:15,662 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:47:15,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 20 [2021-12-06 23:47:15,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199768534] [2021-12-06 23:47:15,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:47:15,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 23:47:15,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:47:15,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 23:47:15,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2021-12-06 23:47:15,664 INFO L87 Difference]: Start difference. First operand 216 states and 297 transitions. Second operand has 20 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 12 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 13 states have call predecessors, (27), 11 states have call successors, (27) [2021-12-06 23:47:18,948 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-06 23:47:21,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-06 23:47:23,048 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-06 23:47:25,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-12-06 23:47:26,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:47:26,357 INFO L93 Difference]: Finished difference Result 228 states and 308 transitions. [2021-12-06 23:47:26,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 23:47:26,358 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 12 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 13 states have call predecessors, (27), 11 states have call successors, (27) Word has length 92 [2021-12-06 23:47:26,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:47:26,360 INFO L225 Difference]: With dead ends: 228 [2021-12-06 23:47:26,360 INFO L226 Difference]: Without dead ends: 226 [2021-12-06 23:47:26,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 159 SyntacticMatches, 5 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2021-12-06 23:47:26,361 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 68 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 118 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-12-06 23:47:26,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 281 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 418 Invalid, 4 Unknown, 0 Unchecked, 9.4s Time] [2021-12-06 23:47:26,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2021-12-06 23:47:26,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 220. [2021-12-06 23:47:26,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 123 states have (on average 1.1626016260162602) internal successors, (143), 126 states have internal predecessors, (143), 79 states have call successors, (79), 17 states have call predecessors, (79), 17 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2021-12-06 23:47:26,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 300 transitions. [2021-12-06 23:47:26,404 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 300 transitions. Word has length 92 [2021-12-06 23:47:26,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:47:26,404 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 300 transitions. [2021-12-06 23:47:26,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.176470588235294) internal successors, (37), 16 states have internal predecessors, (37), 12 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (27), 13 states have call predecessors, (27), 11 states have call successors, (27) [2021-12-06 23:47:26,405 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 300 transitions. [2021-12-06 23:47:26,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-06 23:47:26,406 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:47:26,406 INFO L514 BasicCegarLoop]: trace histogram [15, 14, 14, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:47:26,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 23:47:26,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:47:26,607 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:47:26,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:47:26,609 INFO L85 PathProgramCache]: Analyzing trace with hash 468383399, now seen corresponding path program 2 times [2021-12-06 23:47:26,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:47:26,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606274623] [2021-12-06 23:47:26,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:47:26,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:47:26,635 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:47:26,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [804098493] [2021-12-06 23:47:26,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:47:26,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:47:26,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:47:26,639 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:47:26,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 23:47:26,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:47:26,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:47:26,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 87 conjunts are in the unsatisfiable core [2021-12-06 23:47:26,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:47:28,487 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 95 proven. 114 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2021-12-06 23:47:28,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:47:29,063 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 129 proven. 23 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-12-06 23:47:29,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:47:29,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606274623] [2021-12-06 23:47:29,063 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:47:29,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804098493] [2021-12-06 23:47:29,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804098493] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:47:29,063 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:47:29,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11] total 26 [2021-12-06 23:47:29,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902725708] [2021-12-06 23:47:29,064 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:47:29,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-12-06 23:47:29,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:47:29,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-12-06 23:47:29,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2021-12-06 23:47:29,065 INFO L87 Difference]: Start difference. First operand 220 states and 300 transitions. Second operand has 26 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 18 states have internal predecessors, (47), 13 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 14 states have call predecessors, (31), 11 states have call successors, (31) [2021-12-06 23:47:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:47:34,421 INFO L93 Difference]: Finished difference Result 331 states and 445 transitions. [2021-12-06 23:47:34,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-06 23:47:34,421 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 18 states have internal predecessors, (47), 13 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 14 states have call predecessors, (31), 11 states have call successors, (31) Word has length 112 [2021-12-06 23:47:34,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:47:34,423 INFO L225 Difference]: With dead ends: 331 [2021-12-06 23:47:34,423 INFO L226 Difference]: Without dead ends: 248 [2021-12-06 23:47:34,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 196 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=305, Invalid=1255, Unknown=0, NotChecked=0, Total=1560 [2021-12-06 23:47:34,424 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 78 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 749 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-06 23:47:34,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 445 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 749 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-06 23:47:34,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-12-06 23:47:34,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 245. [2021-12-06 23:47:34,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 138 states have (on average 1.144927536231884) internal successors, (158), 140 states have internal predecessors, (158), 87 states have call successors, (87), 20 states have call predecessors, (87), 19 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2021-12-06 23:47:34,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 331 transitions. [2021-12-06 23:47:34,479 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 331 transitions. Word has length 112 [2021-12-06 23:47:34,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:47:34,479 INFO L470 AbstractCegarLoop]: Abstraction has 245 states and 331 transitions. [2021-12-06 23:47:34,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 2.0434782608695654) internal successors, (47), 18 states have internal predecessors, (47), 13 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 14 states have call predecessors, (31), 11 states have call successors, (31) [2021-12-06 23:47:34,479 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 331 transitions. [2021-12-06 23:47:34,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 23:47:34,480 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 23:47:34,481 INFO L514 BasicCegarLoop]: trace histogram [17, 16, 16, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:47:34,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 23:47:34,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 23:47:34,682 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 23:47:34,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 23:47:34,682 INFO L85 PathProgramCache]: Analyzing trace with hash 898620650, now seen corresponding path program 2 times [2021-12-06 23:47:34,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 23:47:34,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302996882] [2021-12-06 23:47:34,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 23:47:34,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 23:47:34,694 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 23:47:34,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1960991301] [2021-12-06 23:47:34,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 23:47:34,695 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 23:47:34,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 23:47:34,696 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 23:47:34,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 23:47:34,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 23:47:34,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 23:47:34,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 76 conjunts are in the unsatisfiable core [2021-12-06 23:47:34,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 23:47:35,403 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 123 proven. 117 refuted. 0 times theorem prover too weak. 339 trivial. 0 not checked. [2021-12-06 23:47:35,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 23:47:35,912 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 154 proven. 12 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2021-12-06 23:47:35,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 23:47:35,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302996882] [2021-12-06 23:47:35,912 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 23:47:35,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960991301] [2021-12-06 23:47:35,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960991301] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 23:47:35,912 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 23:47:35,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11] total 24 [2021-12-06 23:47:35,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230279458] [2021-12-06 23:47:35,912 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 23:47:35,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-06 23:47:35,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 23:47:35,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-06 23:47:35,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=462, Unknown=0, NotChecked=0, Total=552 [2021-12-06 23:47:35,913 INFO L87 Difference]: Start difference. First operand 245 states and 331 transitions. Second operand has 24 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 19 states have internal predecessors, (44), 15 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 12 states have call predecessors, (30), 13 states have call successors, (30) [2021-12-06 23:47:37,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:47:37,253 INFO L93 Difference]: Finished difference Result 280 states and 381 transitions. [2021-12-06 23:47:37,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 23:47:37,254 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 19 states have internal predecessors, (44), 15 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 12 states have call predecessors, (30), 13 states have call successors, (30) Word has length 123 [2021-12-06 23:47:37,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:47:37,254 INFO L225 Difference]: With dead ends: 280 [2021-12-06 23:47:37,254 INFO L226 Difference]: Without dead ends: 0 [2021-12-06 23:47:37,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 220 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=202, Invalid=1058, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 23:47:37,257 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 58 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:47:37,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 369 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 23:47:37,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-06 23:47:37,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-06 23:47:37,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 23:47:37,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-06 23:47:37,258 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 123 [2021-12-06 23:47:37,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 23:47:37,258 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-06 23:47:37,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 2.4444444444444446) internal successors, (44), 19 states have internal predecessors, (44), 15 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 12 states have call predecessors, (30), 13 states have call successors, (30) [2021-12-06 23:47:37,258 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-06 23:47:37,259 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-06 23:47:37,261 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 23:47:37,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 23:47:37,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 23:47:37,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-06 23:48:07,158 WARN L227 SmtUtils]: Spent 27.88s on a formula simplification. DAG size of input: 215 DAG size of output: 49 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-12-06 23:48:34,949 WARN L227 SmtUtils]: Spent 27.79s on a formula simplification. DAG size of input: 218 DAG size of output: 45 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-12-06 23:49:08,493 WARN L227 SmtUtils]: Spent 33.54s on a formula simplification. DAG size of input: 158 DAG size of output: 60 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-12-06 23:49:24,584 WARN L227 SmtUtils]: Spent 14.05s on a formula simplification. DAG size of input: 220 DAG size of output: 45 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-12-06 23:49:36,426 WARN L227 SmtUtils]: Spent 11.84s on a formula simplification. DAG size of input: 220 DAG size of output: 45 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-12-06 23:49:59,572 WARN L227 SmtUtils]: Spent 22.95s on a formula simplification. DAG size of input: 207 DAG size of output: 48 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-12-06 23:49:59,574 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-06 23:49:59,574 INFO L854 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: (<= |ULTIMATE.start_main_~y~0#1| 2147483647) [2021-12-06 23:49:59,575 INFO L854 garLoopResultBuilder]: At program point L23-1(line 23) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647)) [2021-12-06 23:49:59,575 INFO L854 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|))) (and (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~b~0#1|) .cse0 .cse1) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~yy~0#1|))) (= |ULTIMATE.start_main_~b~0#1| (+ .cse0 .cse1)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (= (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~yy~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1|)) (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~yy~0#1|))))) [2021-12-06 23:49:59,575 INFO L854 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|))) (and (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~b~0#1|) .cse0 .cse1) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~yy~0#1|))) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~yy~0#1|))) (= |ULTIMATE.start_main_~b~0#1| (+ .cse0 .cse1)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))))) [2021-12-06 23:49:59,575 INFO L854 garLoopResultBuilder]: At program point L46-1(line 46) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|))) (and (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~b~0#1|) .cse0 .cse1) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~yy~0#1|))) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~yy~0#1|))) (= |ULTIMATE.start_main_~b~0#1| (+ .cse0 .cse1)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))))) [2021-12-06 23:49:59,575 INFO L858 garLoopResultBuilder]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-12-06 23:49:59,575 INFO L861 garLoopResultBuilder]: At program point L71(lines 18 72) the Hoare annotation is: true [2021-12-06 23:49:59,575 INFO L854 garLoopResultBuilder]: At program point L69(line 69) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) [2021-12-06 23:49:59,575 INFO L854 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (and (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~xy~0#1|) (= |ULTIMATE.start_main_~b~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|))) (<= 1 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= |ULTIMATE.start_main_~a~0#1| .cse0) (or (= |ULTIMATE.start_main_~c~0#1| 0) (= .cse0 (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1|)))) (= |ULTIMATE.start_main_~s~0#1| 1))) [2021-12-06 23:49:59,575 INFO L854 garLoopResultBuilder]: At program point L36-1(line 36) the Hoare annotation is: (let ((.cse0 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (and (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~xy~0#1|) (= |ULTIMATE.start_main_~b~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|))) (<= 1 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= |ULTIMATE.start_main_~a~0#1| .cse0) (or (= |ULTIMATE.start_main_~c~0#1| 0) (= .cse0 (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1|)))) (= |ULTIMATE.start_main_~s~0#1| 1))) [2021-12-06 23:49:59,575 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-06 23:49:59,575 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-06 23:49:59,575 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-06 23:49:59,576 INFO L858 garLoopResultBuilder]: For program point L24(line 24) no Hoare annotation was computed. [2021-12-06 23:49:59,576 INFO L858 garLoopResultBuilder]: For program point L49(lines 45 54) no Hoare annotation was computed. [2021-12-06 23:49:59,576 INFO L854 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|))) (and (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~b~0#1|) .cse0 .cse1) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~yy~0#1|))) (= |ULTIMATE.start_main_~b~0#1| (+ .cse0 .cse1)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (= (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~yy~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1|)) (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~yy~0#1|))))) [2021-12-06 23:49:59,576 INFO L854 garLoopResultBuilder]: At program point L45-2(lines 45 54) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse1 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|))) (and (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~b~0#1|) .cse0 .cse1) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~yy~0#1|))) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~yy~0#1|))) (= |ULTIMATE.start_main_~b~0#1| (+ .cse0 .cse1)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~b~0#1|) |ULTIMATE.start_main_~c~0#1|) |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~a~0#1| (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))))) [2021-12-06 23:49:59,576 INFO L858 garLoopResultBuilder]: For program point L45-3(lines 45 54) no Hoare annotation was computed. [2021-12-06 23:49:59,576 INFO L854 garLoopResultBuilder]: At program point L39-1(lines 37 66) the Hoare annotation is: (let ((.cse4 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|))) (.cse5 (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|)) (.cse6 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|))) (let ((.cse0 (= |ULTIMATE.start_main_~b~0#1| (+ .cse5 .cse6))) (.cse1 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse2 (<= |ULTIMATE.start_main_~y~0#1| 2147483647)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| .cse4))) (or (and (= |ULTIMATE.start_main_~c~0#1| 0) (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~xy~0#1|) .cse0 (<= 1 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse1 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) .cse2 .cse3 (= |ULTIMATE.start_main_~s~0#1| 1)) (and (or (= .cse4 (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1|))) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~b~0#1|) .cse5 .cse6) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~yy~0#1|))) (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|)) (+ (* |ULTIMATE.start_main_~xy~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~yy~0#1|))) .cse0 .cse1 .cse2 .cse3)))) [2021-12-06 23:49:59,576 INFO L858 garLoopResultBuilder]: For program point L70(line 70) no Hoare annotation was computed. [2021-12-06 23:49:59,576 INFO L854 garLoopResultBuilder]: At program point L39-2(lines 39 66) the Hoare annotation is: (let ((.cse1 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~q~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~s~0#1|))) (.cse0 (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~r~0#1|)))) (and (or (= .cse0 (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1|) (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1|))) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= 0 .cse1) (= |ULTIMATE.start_main_~b~0#1| .cse1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2147483647) (= |ULTIMATE.start_main_~a~0#1| .cse0))) [2021-12-06 23:49:59,576 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2021-12-06 23:49:59,576 INFO L858 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2021-12-06 23:49:59,576 INFO L858 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2021-12-06 23:49:59,576 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2021-12-06 23:49:59,577 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2021-12-06 23:49:59,577 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-12-06 23:49:59,577 INFO L858 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-12-06 23:49:59,577 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2021-12-06 23:49:59,577 INFO L858 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2021-12-06 23:49:59,577 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-12-06 23:49:59,579 INFO L732 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 23:49:59,580 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 23:49:59,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 11:49:59 BoogieIcfgContainer [2021-12-06 23:49:59,592 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 23:49:59,592 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 23:49:59,592 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 23:49:59,593 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 23:49:59,593 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 11:46:51" (3/4) ... [2021-12-06 23:49:59,595 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-06 23:49:59,599 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-12-06 23:49:59,599 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-12-06 23:49:59,602 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-06 23:49:59,602 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-06 23:49:59,603 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-06 23:49:59,603 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-06 23:49:59,627 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 23:49:59,627 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 23:49:59,628 INFO L158 Benchmark]: Toolchain (without parser) took 188754.95ms. Allocated memory was 75.5MB in the beginning and 182.5MB in the end (delta: 107.0MB). Free memory was 40.1MB in the beginning and 103.1MB in the end (delta: -63.0MB). Peak memory consumption was 44.1MB. Max. memory is 16.1GB. [2021-12-06 23:49:59,628 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 75.5MB. Free memory was 56.3MB in the beginning and 56.2MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 23:49:59,628 INFO L158 Benchmark]: CACSL2BoogieTranslator took 191.28ms. Allocated memory was 75.5MB in the beginning and 115.3MB in the end (delta: 39.8MB). Free memory was 39.9MB in the beginning and 92.1MB in the end (delta: -52.2MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-12-06 23:49:59,628 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.13ms. Allocated memory is still 115.3MB. Free memory was 92.1MB in the beginning and 90.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:49:59,629 INFO L158 Benchmark]: Boogie Preprocessor took 16.22ms. Allocated memory is still 115.3MB. Free memory was 90.3MB in the beginning and 89.3MB in the end (delta: 981.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 23:49:59,629 INFO L158 Benchmark]: RCFGBuilder took 203.19ms. Allocated memory is still 115.3MB. Free memory was 89.3MB in the beginning and 78.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 23:49:59,629 INFO L158 Benchmark]: TraceAbstraction took 188279.12ms. Allocated memory was 115.3MB in the beginning and 182.5MB in the end (delta: 67.1MB). Free memory was 78.4MB in the beginning and 106.2MB in the end (delta: -27.8MB). Peak memory consumption was 99.2MB. Max. memory is 16.1GB. [2021-12-06 23:49:59,629 INFO L158 Benchmark]: Witness Printer took 34.97ms. Allocated memory is still 182.5MB. Free memory was 106.2MB in the beginning and 103.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-06 23:49:59,631 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 75.5MB. Free memory was 56.3MB in the beginning and 56.2MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 191.28ms. Allocated memory was 75.5MB in the beginning and 115.3MB in the end (delta: 39.8MB). Free memory was 39.9MB in the beginning and 92.1MB in the end (delta: -52.2MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.13ms. Allocated memory is still 115.3MB. Free memory was 92.1MB in the beginning and 90.3MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.22ms. Allocated memory is still 115.3MB. Free memory was 90.3MB in the beginning and 89.3MB in the end (delta: 981.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 203.19ms. Allocated memory is still 115.3MB. Free memory was 89.3MB in the beginning and 78.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 188279.12ms. Allocated memory was 115.3MB in the beginning and 182.5MB in the end (delta: 67.1MB). Free memory was 78.4MB in the beginning and 106.2MB in the end (delta: -27.8MB). Peak memory consumption was 99.2MB. Max. memory is 16.1GB. * Witness Printer took 34.97ms. Allocated memory is still 182.5MB. Free memory was 106.2MB in the beginning and 103.1MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 188.2s, OverallIterations: 14, TraceHistogramMax: 17, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 29.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 142.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 4 mSolverCounterUnknown, 571 SdHoareTripleChecker+Valid, 18.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 500 mSDsluCounter, 3219 SdHoareTripleChecker+Invalid, 18.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2689 mSDsCounter, 886 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3606 IncrementalHoareTripleChecker+Invalid, 4496 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 886 mSolverCounterUnsat, 530 mSDtfsCounter, 3606 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1642 GetRequests, 1368 SyntacticMatches, 23 SemanticMatches, 251 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1383 ImplicationChecksByTransitivity, 15.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=245occurred in iteration=13, InterpolantAutomatonStates: 176, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 14 MinimizatonAttempts, 183 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 156 PreInvPairs, 294 NumberOfFragments, 763 HoareAnnotationTreeSize, 156 FomulaSimplifications, 9889 FormulaSimplificationTreeSizeReduction, 1.8s HoareSimplificationTime, 15 FomulaSimplificationsInter, 59080 FormulaSimplificationTreeSizeReductionInter, 140.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 859 NumberOfCodeBlocks, 839 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 1550 ConstructedInterpolants, 0 QuantifiedInterpolants, 9335 SizeOfPredicates, 92 NumberOfNonLiveVariables, 2204 ConjunctsInSsa, 440 ConjunctsInUnsatCore, 25 InterpolantComputations, 4 PerfectInterpolantSequences, 3360/3837 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: 45]: Loop Invariant Derived loop invariant: ((((((1 <= y && y * b + x * q + y * s == xy * q + b + s * yy) && y * y * r + y * x * p == xy * p + r * yy) && b == x * q + y * s) && 1 <= x) && y <= 2147483647) && k * b + c == a) && a == x * p + y * r - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((((((c == 0 && yy == y * y) && y * x == xy) && b == x * q + y * s) && 1 <= b) && r == 0) && q == 0) && 1 <= x) && a == x) && y <= 2147483647) && a == x * p + y * r) && s == 1) || ((((((((x * p + y * r == c + y * k * s + x * k * q || b <= c) && 1 <= y) && y * b + x * q + y * s == xy * q + b + s * yy) && y * y * r + y * x * p == xy * p + r * yy) && b == x * q + y * s) && 1 <= x) && y <= 2147483647) && a == x * p + y * r) RESULT: Ultimate proved your program to be correct! [2021-12-06 23:49:59,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88ae6874-b07a-43a9-87d1-57813a94991b/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE