./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 11:09:44,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:09:44,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:09:44,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:09:44,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:09:44,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:09:44,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:09:44,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:09:44,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:09:44,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:09:44,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:09:44,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:09:44,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:09:44,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:09:44,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:09:44,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:09:44,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:09:44,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:09:44,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:09:44,102 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:09:44,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:09:44,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:09:44,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:09:44,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:09:44,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:09:44,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:09:44,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:09:44,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:09:44,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:09:44,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:09:44,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:09:44,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:09:44,136 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:09:44,137 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:09:44,138 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:09:44,138 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:09:44,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:09:44,139 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:09:44,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:09:44,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:09:44,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:09:44,147 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:09:44,185 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:09:44,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:09:44,186 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:09:44,187 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:09:44,187 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:09:44,188 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:09:44,189 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:09:44,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:09:44,189 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:09:44,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:09:44,191 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:09:44,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:09:44,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:09:44,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:09:44,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:09:44,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:09:44,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:09:44,192 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:09:44,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:09:44,193 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:09:44,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:09:44,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:09:44,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:09:44,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:09:44,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:09:44,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:09:44,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:09:44,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:09:44,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:09:44,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:09:44,196 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:09:44,196 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:09:44,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:09:44,196 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_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebdf8b0d6633d593d56778eaf5218135ab2be92cae14e75cdda2462494f96410 [2022-11-20 11:09:44,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:09:44,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:09:44,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:09:44,494 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:09:44,495 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:09:44,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2022-11-20 11:09:47,598 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:09:47,863 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:09:47,864 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c [2022-11-20 11:09:47,871 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/data/3bd37ec95/b4014b1ede4947c986ac6bb99f7fc75c/FLAG52e87e73a [2022-11-20 11:09:47,886 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/data/3bd37ec95/b4014b1ede4947c986ac6bb99f7fc75c [2022-11-20 11:09:47,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:09:47,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:09:47,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:09:47,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:09:47,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:09:47,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:09:47" (1/1) ... [2022-11-20 11:09:47,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e2f03e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:47, skipping insertion in model container [2022-11-20 11:09:47,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:09:47" (1/1) ... [2022-11-20 11:09:47,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:09:47,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:09:48,067 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2022-11-20 11:09:48,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:09:48,099 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:09:48,112 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2022-11-20 11:09:48,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:09:48,136 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:09:48,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:48 WrapperNode [2022-11-20 11:09:48,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:09:48,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:09:48,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:09:48,139 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:09:48,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:48" (1/1) ... [2022-11-20 11:09:48,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:48" (1/1) ... [2022-11-20 11:09:48,173 INFO L138 Inliner]: procedures = 14, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 77 [2022-11-20 11:09:48,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:09:48,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:09:48,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:09:48,175 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:09:48,185 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:48" (1/1) ... [2022-11-20 11:09:48,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:48" (1/1) ... [2022-11-20 11:09:48,187 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:48" (1/1) ... [2022-11-20 11:09:48,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:48" (1/1) ... [2022-11-20 11:09:48,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:48" (1/1) ... [2022-11-20 11:09:48,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:48" (1/1) ... [2022-11-20 11:09:48,197 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:48" (1/1) ... [2022-11-20 11:09:48,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:48" (1/1) ... [2022-11-20 11:09:48,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:09:48,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:09:48,201 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:09:48,201 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:09:48,202 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:48" (1/1) ... [2022-11-20 11:09:48,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:09:48,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:09:48,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:09:48,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:09:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:09:48,285 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 11:09:48,285 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 11:09:48,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:09:48,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:09:48,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:09:48,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 11:09:48,287 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 11:09:48,370 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:09:48,376 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:09:48,573 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:09:48,579 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:09:48,580 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 11:09:48,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:09:48 BoogieIcfgContainer [2022-11-20 11:09:48,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:09:48,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:09:48,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:09:48,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:09:48,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:09:47" (1/3) ... [2022-11-20 11:09:48,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7970d0f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:09:48, skipping insertion in model container [2022-11-20 11:09:48,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:09:48" (2/3) ... [2022-11-20 11:09:48,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7970d0f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:09:48, skipping insertion in model container [2022-11-20 11:09:48,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:09:48" (3/3) ... [2022-11-20 11:09:48,593 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.c [2022-11-20 11:09:48,614 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:09:48,615 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 11:09:48,668 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:09:48,676 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@23bd5ab4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:09:48,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 11:09:48,680 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 21 states have internal predecessors, (28), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-20 11:09:48,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-20 11:09:48,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:48,691 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:48,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:48,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:48,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1146169762, now seen corresponding path program 1 times [2022-11-20 11:09:48,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:48,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890712699] [2022-11-20 11:09:48,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:48,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:48,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:48,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890712699] [2022-11-20 11:09:48,853 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 11:09:48,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525042537] [2022-11-20 11:09:48,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:48,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:48,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:09:48,858 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:09:48,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 11:09:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:49,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 11:09:49,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-20 11:09:49,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:09:49,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525042537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:09:49,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:09:49,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 11:09:49,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810510073] [2022-11-20 11:09:49,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:49,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 11:09:49,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:49,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 11:09:49,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:09:49,120 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 21 states have internal predecessors, (28), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 11:09:49,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:49,146 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2022-11-20 11:09:49,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 11:09:49,148 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 39 [2022-11-20 11:09:49,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:49,156 INFO L225 Difference]: With dead ends: 67 [2022-11-20 11:09:49,157 INFO L226 Difference]: Without dead ends: 31 [2022-11-20 11:09:49,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 11:09:49,164 INFO L413 NwaCegarLoop]: 46 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, 46 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:49,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:09:49,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-20 11:09:49,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-11-20 11:09:49,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-20 11:09:49,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2022-11-20 11:09:49,211 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 39 [2022-11-20 11:09:49,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:49,212 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2022-11-20 11:09:49,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 11:09:49,213 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2022-11-20 11:09:49,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-20 11:09:49,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:49,215 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:49,222 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-20 11:09:49,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:49,421 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:49,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:49,422 INFO L85 PathProgramCache]: Analyzing trace with hash 846808023, now seen corresponding path program 1 times [2022-11-20 11:09:49,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:49,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321282598] [2022-11-20 11:09:49,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:49,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:49,453 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:09:49,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482158332] [2022-11-20 11:09:49,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:49,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:49,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:09:49,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:09:49,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 11:09:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:49,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 11:09:49,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:49,691 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 11:09:49,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:49,849 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 11:09:49,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:49,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321282598] [2022-11-20 11:09:49,858 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:09:49,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482158332] [2022-11-20 11:09:49,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482158332] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:49,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:09:49,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-11-20 11:09:49,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108264839] [2022-11-20 11:09:49,859 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:49,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:09:49,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:49,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:09:49,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:09:49,864 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 11:09:50,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:50,052 INFO L93 Difference]: Finished difference Result 48 states and 65 transitions. [2022-11-20 11:09:50,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:09:50,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 40 [2022-11-20 11:09:50,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:50,055 INFO L225 Difference]: With dead ends: 48 [2022-11-20 11:09:50,055 INFO L226 Difference]: Without dead ends: 40 [2022-11-20 11:09:50,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 71 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:09:50,056 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 22 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:50,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 88 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:09:50,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-20 11:09:50,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2022-11-20 11:09:50,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 12 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-20 11:09:50,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2022-11-20 11:09:50,072 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 40 [2022-11-20 11:09:50,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:50,073 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2022-11-20 11:09:50,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-20 11:09:50,074 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2022-11-20 11:09:50,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 11:09:50,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:50,078 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:09:50,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:50,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:50,284 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:50,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:50,285 INFO L85 PathProgramCache]: Analyzing trace with hash 481927254, now seen corresponding path program 1 times [2022-11-20 11:09:50,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:50,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907291341] [2022-11-20 11:09:50,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:50,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:50,303 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:09:50,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653296782] [2022-11-20 11:09:50,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:50,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:50,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:09:50,306 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:09:50,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 11:09:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:50,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-20 11:09:50,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:50,548 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-20 11:09:50,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:50,658 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-20 11:09:50,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:50,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907291341] [2022-11-20 11:09:50,659 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:09:50,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653296782] [2022-11-20 11:09:50,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653296782] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:09:50,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:09:50,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-20 11:09:50,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790099133] [2022-11-20 11:09:50,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:50,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:09:50,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:50,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:09:50,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-20 11:09:50,664 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 11:09:50,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:50,757 INFO L93 Difference]: Finished difference Result 39 states and 49 transitions. [2022-11-20 11:09:50,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:09:50,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 41 [2022-11-20 11:09:50,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:50,761 INFO L225 Difference]: With dead ends: 39 [2022-11-20 11:09:50,761 INFO L226 Difference]: Without dead ends: 37 [2022-11-20 11:09:50,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:09:50,765 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 7 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:50,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 120 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:09:50,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-20 11:09:50,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-20 11:09:50,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 22 states have internal predecessors, (24), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-20 11:09:50,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2022-11-20 11:09:50,788 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 47 transitions. Word has length 41 [2022-11-20 11:09:50,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:50,788 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 47 transitions. [2022-11-20 11:09:50,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-20 11:09:50,789 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 47 transitions. [2022-11-20 11:09:50,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 11:09:50,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:50,790 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-11-20 11:09:50,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-20 11:09:50,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:50,997 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:50,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:50,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1626076469, now seen corresponding path program 1 times [2022-11-20 11:09:50,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:50,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273063734] [2022-11-20 11:09:50,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:50,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:51,017 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:09:51,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1928193687] [2022-11-20 11:09:51,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:51,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:51,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:09:51,019 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:09:51,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 11:09:51,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:51,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-20 11:09:51,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:51,501 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-20 11:09:51,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:51,699 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-20 11:09:51,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:51,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273063734] [2022-11-20 11:09:51,699 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:09:51,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928193687] [2022-11-20 11:09:51,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928193687] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:09:51,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:09:51,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 15 [2022-11-20 11:09:51,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417526037] [2022-11-20 11:09:51,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:51,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:09:51,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:51,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:09:51,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:09:51,702 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:09:51,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:51,769 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2022-11-20 11:09:51,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:09:51,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 46 [2022-11-20 11:09:51,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:51,771 INFO L225 Difference]: With dead ends: 50 [2022-11-20 11:09:51,772 INFO L226 Difference]: Without dead ends: 48 [2022-11-20 11:09:51,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:09:51,773 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 6 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:51,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 141 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 11:09:51,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-11-20 11:09:51,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2022-11-20 11:09:51,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 27 states have internal predecessors, (30), 16 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 11:09:51,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 61 transitions. [2022-11-20 11:09:51,789 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 61 transitions. Word has length 46 [2022-11-20 11:09:51,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:51,789 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 61 transitions. [2022-11-20 11:09:51,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-20 11:09:51,790 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 61 transitions. [2022-11-20 11:09:51,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 11:09:51,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:51,791 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 2, 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] [2022-11-20 11:09:51,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-20 11:09:51,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:51,997 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:51,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:51,998 INFO L85 PathProgramCache]: Analyzing trace with hash 779090230, now seen corresponding path program 1 times [2022-11-20 11:09:51,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:51,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351574494] [2022-11-20 11:09:51,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:51,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:52,017 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:09:52,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1266870834] [2022-11-20 11:09:52,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:52,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:52,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:09:52,019 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:09:52,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 11:09:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:52,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 11:09:52,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:52,500 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 3 proven. 31 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-20 11:09:52,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:52,679 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-20 11:09:52,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:52,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351574494] [2022-11-20 11:09:52,679 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:09:52,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266870834] [2022-11-20 11:09:52,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266870834] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 11:09:52,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:09:52,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 16 [2022-11-20 11:09:52,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273654334] [2022-11-20 11:09:52,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:09:52,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:09:52,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:52,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:09:52,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:09:52,681 INFO L87 Difference]: Start difference. First operand 47 states and 61 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 11:09:52,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:52,801 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2022-11-20 11:09:52,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:09:52,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 51 [2022-11-20 11:09:52,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:52,803 INFO L225 Difference]: With dead ends: 54 [2022-11-20 11:09:52,803 INFO L226 Difference]: Without dead ends: 52 [2022-11-20 11:09:52,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:09:52,805 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 9 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:52,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 151 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:09:52,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-20 11:09:52,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-11-20 11:09:52,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 30 states have internal predecessors, (33), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 11:09:52,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2022-11-20 11:09:52,828 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 51 [2022-11-20 11:09:52,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:52,830 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2022-11-20 11:09:52,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-20 11:09:52,830 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2022-11-20 11:09:52,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-20 11:09:52,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:52,838 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1] [2022-11-20 11:09:52,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:53,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:53,044 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:53,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:53,045 INFO L85 PathProgramCache]: Analyzing trace with hash -670274197, now seen corresponding path program 1 times [2022-11-20 11:09:53,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:53,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834164812] [2022-11-20 11:09:53,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:53,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:53,065 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:09:53,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767595561] [2022-11-20 11:09:53,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:53,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:53,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:09:53,070 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:09:53,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 11:09:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:53,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-20 11:09:53,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:53,507 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-20 11:09:53,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:53,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:53,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834164812] [2022-11-20 11:09:53,670 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:09:53,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767595561] [2022-11-20 11:09:53,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767595561] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:09:53,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:09:53,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-11-20 11:09:53,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720642179] [2022-11-20 11:09:53,671 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:53,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 11:09:53,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:53,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 11:09:53,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:09:53,673 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-20 11:09:53,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:53,970 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2022-11-20 11:09:53,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:09:53,971 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 56 [2022-11-20 11:09:53,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:53,974 INFO L225 Difference]: With dead ends: 60 [2022-11-20 11:09:53,974 INFO L226 Difference]: Without dead ends: 58 [2022-11-20 11:09:53,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:09:53,977 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 28 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:53,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 120 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:09:53,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-20 11:09:54,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 55. [2022-11-20 11:09:54,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-20 11:09:54,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2022-11-20 11:09:54,013 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 56 [2022-11-20 11:09:54,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:54,014 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2022-11-20 11:09:54,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 9 states have internal predecessors, (22), 4 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-20 11:09:54,015 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2022-11-20 11:09:54,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 11:09:54,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:54,017 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 5, 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, 1, 1, 1, 1, 1] [2022-11-20 11:09:54,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:54,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 11:09:54,223 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:54,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:54,224 INFO L85 PathProgramCache]: Analyzing trace with hash -759965185, now seen corresponding path program 1 times [2022-11-20 11:09:54,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:54,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199294266] [2022-11-20 11:09:54,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:54,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:54,238 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:09:54,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [668646884] [2022-11-20 11:09:54,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:54,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:54,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:09:54,240 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:09:54,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 11:09:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:54,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-20 11:09:54,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:54,393 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-20 11:09:54,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:54,508 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-11-20 11:09:54,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:54,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199294266] [2022-11-20 11:09:54,509 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:09:54,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668646884] [2022-11-20 11:09:54,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668646884] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:54,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:09:54,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-11-20 11:09:54,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203305185] [2022-11-20 11:09:54,510 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:54,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:09:54,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:54,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:09:54,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:09:54,513 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-20 11:09:54,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:54,814 INFO L93 Difference]: Finished difference Result 102 states and 142 transitions. [2022-11-20 11:09:54,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 11:09:54,815 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 65 [2022-11-20 11:09:54,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:54,820 INFO L225 Difference]: With dead ends: 102 [2022-11-20 11:09:54,820 INFO L226 Difference]: Without dead ends: 94 [2022-11-20 11:09:54,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 117 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-11-20 11:09:54,823 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 36 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:54,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 231 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 11:09:54,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-20 11:09:54,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 85. [2022-11-20 11:09:54,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-11-20 11:09:54,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 118 transitions. [2022-11-20 11:09:54,874 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 118 transitions. Word has length 65 [2022-11-20 11:09:54,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:54,876 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 118 transitions. [2022-11-20 11:09:54,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 5 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-20 11:09:54,876 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 118 transitions. [2022-11-20 11:09:54,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-20 11:09:54,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:54,879 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1] [2022-11-20 11:09:54,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:55,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:55,086 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:55,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:55,086 INFO L85 PathProgramCache]: Analyzing trace with hash -696294669, now seen corresponding path program 1 times [2022-11-20 11:09:55,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:55,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132670633] [2022-11-20 11:09:55,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:55,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:55,122 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:09:55,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1501572900] [2022-11-20 11:09:55,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:55,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:55,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:09:55,147 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:09:55,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 11:09:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:09:55,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-20 11:09:55,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:55,459 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 23 proven. 10 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-20 11:09:55,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:09:55,643 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-20 11:09:55,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:09:55,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132670633] [2022-11-20 11:09:55,643 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:09:55,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501572900] [2022-11-20 11:09:55,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501572900] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:09:55,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:09:55,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 15 [2022-11-20 11:09:55,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546361407] [2022-11-20 11:09:55,644 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:09:55,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:09:55,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:09:55,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:09:55,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-20 11:09:55,647 INFO L87 Difference]: Start difference. First operand 85 states and 118 transitions. Second operand has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 8 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-20 11:09:56,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:09:56,493 INFO L93 Difference]: Finished difference Result 128 states and 183 transitions. [2022-11-20 11:09:56,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:09:56,494 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 8 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 71 [2022-11-20 11:09:56,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:09:56,497 INFO L225 Difference]: With dead ends: 128 [2022-11-20 11:09:56,497 INFO L226 Difference]: Without dead ends: 124 [2022-11-20 11:09:56,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:09:56,498 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 49 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:09:56,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 242 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:09:56,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-11-20 11:09:56,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 92. [2022-11-20 11:09:56,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 50 states have (on average 1.18) internal successors, (59), 52 states have internal predecessors, (59), 34 states have call successors, (34), 7 states have call predecessors, (34), 7 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-20 11:09:56,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 126 transitions. [2022-11-20 11:09:56,536 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 126 transitions. Word has length 71 [2022-11-20 11:09:56,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:09:56,536 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 126 transitions. [2022-11-20 11:09:56,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 8 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-20 11:09:56,537 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 126 transitions. [2022-11-20 11:09:56,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-20 11:09:56,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:09:56,538 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1] [2022-11-20 11:09:56,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 11:09:56,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:56,745 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:09:56,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:09:56,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1352497678, now seen corresponding path program 2 times [2022-11-20 11:09:56,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:09:56,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221240028] [2022-11-20 11:09:56,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:09:56,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:09:56,755 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:09:56,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1674256582] [2022-11-20 11:09:56,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:09:56,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:09:56,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:09:56,757 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:09:56,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 11:09:56,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:09:56,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:09:56,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 51 conjunts are in the unsatisfiable core [2022-11-20 11:09:56,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:09:58,297 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 23 proven. 37 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-11-20 11:09:58,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:01,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:01,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221240028] [2022-11-20 11:10:01,544 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:01,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674256582] [2022-11-20 11:10:01,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674256582] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:10:01,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:10:01,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2022-11-20 11:10:01,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759099649] [2022-11-20 11:10:01,545 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:01,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-20 11:10:01,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:01,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-20 11:10:01,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=422, Unknown=1, NotChecked=0, Total=506 [2022-11-20 11:10:01,546 INFO L87 Difference]: Start difference. First operand 92 states and 126 transitions. Second operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-20 11:10:02,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:02,014 INFO L93 Difference]: Finished difference Result 113 states and 147 transitions. [2022-11-20 11:10:02,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 11:10:02,015 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 76 [2022-11-20 11:10:02,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:02,016 INFO L225 Difference]: With dead ends: 113 [2022-11-20 11:10:02,016 INFO L226 Difference]: Without dead ends: 111 [2022-11-20 11:10:02,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=122, Invalid=633, Unknown=1, NotChecked=0, Total=756 [2022-11-20 11:10:02,018 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 26 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:02,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 166 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 248 Invalid, 0 Unknown, 85 Unchecked, 0.3s Time] [2022-11-20 11:10:02,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-11-20 11:10:02,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-11-20 11:10:02,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 63 states have (on average 1.1428571428571428) internal successors, (72), 66 states have internal predecessors, (72), 37 states have call successors, (37), 10 states have call predecessors, (37), 10 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2022-11-20 11:10:02,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 145 transitions. [2022-11-20 11:10:02,050 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 145 transitions. Word has length 76 [2022-11-20 11:10:02,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:02,051 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 145 transitions. [2022-11-20 11:10:02,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.6875) internal successors, (27), 13 states have internal predecessors, (27), 6 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-11-20 11:10:02,051 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 145 transitions. [2022-11-20 11:10:02,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-20 11:10:02,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:02,052 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 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, 1, 1] [2022-11-20 11:10:02,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:02,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:02,258 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:02,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:02,259 INFO L85 PathProgramCache]: Analyzing trace with hash -421153901, now seen corresponding path program 3 times [2022-11-20 11:10:02,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:02,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304782602] [2022-11-20 11:10:02,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:02,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:02,283 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:02,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948948022] [2022-11-20 11:10:02,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:10:02,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:02,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:02,287 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:02,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 11:10:02,367 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 11:10:02,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:10:02,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-20 11:10:02,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:03,649 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 43 proven. 20 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-11-20 11:10:03,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:05,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:05,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304782602] [2022-11-20 11:10:05,630 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:05,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948948022] [2022-11-20 11:10:05,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948948022] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:10:05,630 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:10:05,630 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2022-11-20 11:10:05,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347237205] [2022-11-20 11:10:05,631 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:05,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:10:05,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:05,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:10:05,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-11-20 11:10:05,632 INFO L87 Difference]: Start difference. First operand 111 states and 145 transitions. Second operand has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-11-20 11:10:06,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:06,658 INFO L93 Difference]: Finished difference Result 132 states and 171 transitions. [2022-11-20 11:10:06,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:10:06,659 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 81 [2022-11-20 11:10:06,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:06,660 INFO L225 Difference]: With dead ends: 132 [2022-11-20 11:10:06,660 INFO L226 Difference]: Without dead ends: 130 [2022-11-20 11:10:06,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2022-11-20 11:10:06,662 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 48 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:06,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 142 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-20 11:10:06,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-20 11:10:06,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2022-11-20 11:10:06,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 72 states have (on average 1.1527777777777777) internal successors, (83), 74 states have internal predecessors, (83), 42 states have call successors, (42), 12 states have call predecessors, (42), 12 states have return successors, (41), 40 states have call predecessors, (41), 41 states have call successors, (41) [2022-11-20 11:10:06,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 166 transitions. [2022-11-20 11:10:06,699 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 166 transitions. Word has length 81 [2022-11-20 11:10:06,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:06,699 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 166 transitions. [2022-11-20 11:10:06,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 14 states have internal predecessors, (27), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-11-20 11:10:06,700 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 166 transitions. [2022-11-20 11:10:06,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-20 11:10:06,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:06,701 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 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, 1, 1, 1, 1, 1] [2022-11-20 11:10:06,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:06,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 11:10:06,906 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:06,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:06,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1712962370, now seen corresponding path program 1 times [2022-11-20 11:10:06,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:06,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466080331] [2022-11-20 11:10:06,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:06,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:06,922 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:06,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1782840370] [2022-11-20 11:10:06,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:06,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:06,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:06,926 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:06,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 11:10:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:07,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-20 11:10:07,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:07,816 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 22 proven. 26 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-20 11:10:07,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:08,617 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-20 11:10:08,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:08,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466080331] [2022-11-20 11:10:08,618 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:08,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782840370] [2022-11-20 11:10:08,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782840370] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:08,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:08,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 22 [2022-11-20 11:10:08,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887115434] [2022-11-20 11:10:08,619 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:08,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-20 11:10:08,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:08,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-20 11:10:08,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:10:08,621 INFO L87 Difference]: Start difference. First operand 127 states and 166 transitions. Second operand has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 11 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-20 11:10:24,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:24,117 INFO L93 Difference]: Finished difference Result 212 states and 298 transitions. [2022-11-20 11:10:24,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-20 11:10:24,120 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 11 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) Word has length 87 [2022-11-20 11:10:24,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:24,122 INFO L225 Difference]: With dead ends: 212 [2022-11-20 11:10:24,122 INFO L226 Difference]: Without dead ends: 208 [2022-11-20 11:10:24,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=358, Invalid=1534, Unknown=0, NotChecked=0, Total=1892 [2022-11-20 11:10:24,124 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 129 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 945 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:24,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 400 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 945 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-20 11:10:24,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-20 11:10:24,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2022-11-20 11:10:24,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 109 states have (on average 1.1926605504587156) internal successors, (130), 110 states have internal predecessors, (130), 79 states have call successors, (79), 15 states have call predecessors, (79), 15 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2022-11-20 11:10:24,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 287 transitions. [2022-11-20 11:10:24,218 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 287 transitions. Word has length 87 [2022-11-20 11:10:24,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:24,219 INFO L495 AbstractCegarLoop]: Abstraction has 204 states and 287 transitions. [2022-11-20 11:10:24,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 18 states have internal predecessors, (37), 11 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-20 11:10:24,219 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 287 transitions. [2022-11-20 11:10:24,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-20 11:10:24,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:24,220 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:10:24,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:24,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 11:10:24,426 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:24,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:24,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1140726838, now seen corresponding path program 4 times [2022-11-20 11:10:24,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:24,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983378497] [2022-11-20 11:10:24,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:24,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:24,444 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:24,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [132104625] [2022-11-20 11:10:24,455 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:10:24,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:24,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:24,457 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:24,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 11:10:24,538 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:10:24,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:10:24,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 11:10:24,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-11-20 11:10:24,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 11:10:24,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:24,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983378497] [2022-11-20 11:10:24,576 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:24,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132104625] [2022-11-20 11:10:24,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132104625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:10:24,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:10:24,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:10:24,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248024873] [2022-11-20 11:10:24,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:10:24,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:10:24,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:24,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:10:24,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:10:24,578 INFO L87 Difference]: Start difference. First operand 204 states and 287 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 11:10:24,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:24,731 INFO L93 Difference]: Finished difference Result 257 states and 359 transitions. [2022-11-20 11:10:24,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 11:10:24,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 101 [2022-11-20 11:10:24,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:24,733 INFO L225 Difference]: With dead ends: 257 [2022-11-20 11:10:24,733 INFO L226 Difference]: Without dead ends: 185 [2022-11-20 11:10:24,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:10:24,735 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 7 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:24,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 145 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 11:10:24,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-20 11:10:24,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 171. [2022-11-20 11:10:24,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 92 states have (on average 1.141304347826087) internal successors, (105), 93 states have internal predecessors, (105), 63 states have call successors, (63), 15 states have call predecessors, (63), 15 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-20 11:10:24,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 230 transitions. [2022-11-20 11:10:24,810 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 230 transitions. Word has length 101 [2022-11-20 11:10:24,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:24,810 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 230 transitions. [2022-11-20 11:10:24,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-20 11:10:24,811 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 230 transitions. [2022-11-20 11:10:24,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-20 11:10:24,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:24,812 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 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, 1, 1, 1, 1, 1] [2022-11-20 11:10:24,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:25,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 11:10:25,018 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:25,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:25,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1899970478, now seen corresponding path program 1 times [2022-11-20 11:10:25,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:25,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470205034] [2022-11-20 11:10:25,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:25,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:25,029 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:25,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [141717475] [2022-11-20 11:10:25,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:25,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:25,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:25,031 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:25,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 11:10:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:10:25,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 11:10:25,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:25,262 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 122 proven. 23 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-11-20 11:10:25,263 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:25,469 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2022-11-20 11:10:25,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:25,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470205034] [2022-11-20 11:10:25,469 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:25,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141717475] [2022-11-20 11:10:25,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141717475] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:25,469 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:25,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2022-11-20 11:10:25,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744311178] [2022-11-20 11:10:25,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:25,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 11:10:25,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:25,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 11:10:25,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-20 11:10:25,471 INFO L87 Difference]: Start difference. First operand 171 states and 230 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2022-11-20 11:10:26,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:26,098 INFO L93 Difference]: Finished difference Result 215 states and 286 transitions. [2022-11-20 11:10:26,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:10:26,099 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) Word has length 103 [2022-11-20 11:10:26,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:26,100 INFO L225 Difference]: With dead ends: 215 [2022-11-20 11:10:26,100 INFO L226 Difference]: Without dead ends: 144 [2022-11-20 11:10:26,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 190 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:10:26,102 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 67 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:26,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 228 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:10:26,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-20 11:10:26,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2022-11-20 11:10:26,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 77 states have (on average 1.1168831168831168) internal successors, (86), 78 states have internal predecessors, (86), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-20 11:10:26,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 187 transitions. [2022-11-20 11:10:26,164 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 187 transitions. Word has length 103 [2022-11-20 11:10:26,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:26,165 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 187 transitions. [2022-11-20 11:10:26,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 13 states have internal predecessors, (35), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2022-11-20 11:10:26,165 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 187 transitions. [2022-11-20 11:10:26,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-20 11:10:26,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:26,167 INFO L195 NwaCegarLoop]: trace histogram [15, 14, 14, 6, 6, 6, 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, 1, 1, 1, 1, 1] [2022-11-20 11:10:26,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:26,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:26,372 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:26,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:26,373 INFO L85 PathProgramCache]: Analyzing trace with hash -397785577, now seen corresponding path program 2 times [2022-11-20 11:10:26,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:26,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054977109] [2022-11-20 11:10:26,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:26,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:26,383 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:26,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660108710] [2022-11-20 11:10:26,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:10:26,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:26,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:26,385 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:26,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 11:10:26,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:10:26,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:10:26,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 11:10:26,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:26,647 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 154 proven. 18 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2022-11-20 11:10:26,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:26,845 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 48 proven. 32 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2022-11-20 11:10:26,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:26,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054977109] [2022-11-20 11:10:26,845 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:26,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660108710] [2022-11-20 11:10:26,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660108710] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:26,846 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:26,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-11-20 11:10:26,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683648108] [2022-11-20 11:10:26,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:26,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:10:26,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:26,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:10:26,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:10:26,847 INFO L87 Difference]: Start difference. First operand 142 states and 187 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) [2022-11-20 11:10:27,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:27,418 INFO L93 Difference]: Finished difference Result 185 states and 243 transitions. [2022-11-20 11:10:27,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:10:27,419 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) Word has length 123 [2022-11-20 11:10:27,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:27,420 INFO L225 Difference]: With dead ends: 185 [2022-11-20 11:10:27,420 INFO L226 Difference]: Without dead ends: 146 [2022-11-20 11:10:27,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 229 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2022-11-20 11:10:27,421 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 34 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:27,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 228 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:10:27,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-20 11:10:27,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 142. [2022-11-20 11:10:27,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 77 states have (on average 1.0909090909090908) internal successors, (84), 78 states have internal predecessors, (84), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-20 11:10:27,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 185 transitions. [2022-11-20 11:10:27,467 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 185 transitions. Word has length 123 [2022-11-20 11:10:27,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:27,468 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 185 transitions. [2022-11-20 11:10:27,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 9 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (33), 9 states have call predecessors, (33), 9 states have call successors, (33) [2022-11-20 11:10:27,468 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 185 transitions. [2022-11-20 11:10:27,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-11-20 11:10:27,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:27,471 INFO L195 NwaCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 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, 1, 1, 1, 1, 1] [2022-11-20 11:10:27,483 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:27,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 11:10:27,677 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:27,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:27,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1816082155, now seen corresponding path program 2 times [2022-11-20 11:10:27,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:27,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251821892] [2022-11-20 11:10:27,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:27,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:27,691 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:27,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [178274510] [2022-11-20 11:10:27,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 11:10:27,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:27,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:27,693 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:27,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 11:10:27,790 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 11:10:27,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:10:27,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 60 conjunts are in the unsatisfiable core [2022-11-20 11:10:27,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:29,136 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 38 proven. 61 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2022-11-20 11:10:29,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:10:31,013 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 35 proven. 55 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2022-11-20 11:10:31,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:10:31,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251821892] [2022-11-20 11:10:31,014 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:10:31,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178274510] [2022-11-20 11:10:31,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178274510] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:10:31,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:10:31,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 31 [2022-11-20 11:10:31,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876625699] [2022-11-20 11:10:31,015 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:10:31,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 11:10:31,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:10:31,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 11:10:31,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2022-11-20 11:10:31,017 INFO L87 Difference]: Start difference. First operand 142 states and 185 transitions. Second operand has 31 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 25 states have internal predecessors, (53), 17 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (43), 15 states have call predecessors, (43), 15 states have call successors, (43) [2022-11-20 11:10:56,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:10:56,623 INFO L93 Difference]: Finished difference Result 259 states and 372 transitions. [2022-11-20 11:10:56,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-20 11:10:56,624 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 25 states have internal predecessors, (53), 17 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (43), 15 states have call predecessors, (43), 15 states have call successors, (43) Word has length 134 [2022-11-20 11:10:56,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:10:56,629 INFO L225 Difference]: With dead ends: 259 [2022-11-20 11:10:56,629 INFO L226 Difference]: Without dead ends: 250 [2022-11-20 11:10:56,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=600, Invalid=3060, Unknown=0, NotChecked=0, Total=3660 [2022-11-20 11:10:56,631 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 236 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 1545 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 702 SdHoareTripleChecker+Invalid, 1885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 1545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:10:56,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 702 Invalid, 1885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 1545 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2022-11-20 11:10:56,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-20 11:10:56,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 211. [2022-11-20 11:10:56,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 106 states have (on average 1.1132075471698113) internal successors, (118), 107 states have internal predecessors, (118), 91 states have call successors, (91), 13 states have call predecessors, (91), 13 states have return successors, (90), 90 states have call predecessors, (90), 90 states have call successors, (90) [2022-11-20 11:10:56,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 299 transitions. [2022-11-20 11:10:56,754 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 299 transitions. Word has length 134 [2022-11-20 11:10:56,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:10:56,755 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 299 transitions. [2022-11-20 11:10:56,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 1.8275862068965518) internal successors, (53), 25 states have internal predecessors, (53), 17 states have call successors, (44), 3 states have call predecessors, (44), 2 states have return successors, (43), 15 states have call predecessors, (43), 15 states have call successors, (43) [2022-11-20 11:10:56,755 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 299 transitions. [2022-11-20 11:10:56,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-20 11:10:56,757 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:10:56,757 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 6, 6, 6, 5, 5, 5, 5, 5, 5, 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] [2022-11-20 11:10:56,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 11:10:56,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:56,963 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:10:56,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:10:56,964 INFO L85 PathProgramCache]: Analyzing trace with hash -645167759, now seen corresponding path program 3 times [2022-11-20 11:10:56,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:10:56,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613337693] [2022-11-20 11:10:56,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:10:56,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:10:56,976 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:10:56,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119539654] [2022-11-20 11:10:56,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:10:56,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:10:56,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:10:56,988 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:10:56,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 11:10:57,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 11:10:57,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:10:57,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-20 11:10:57,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:10:58,187 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 86 proven. 61 refuted. 0 times theorem prover too weak. 615 trivial. 0 not checked. [2022-11-20 11:10:58,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:00,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:00,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613337693] [2022-11-20 11:11:00,855 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:11:00,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119539654] [2022-11-20 11:11:00,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119539654] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:00,856 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:11:00,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2022-11-20 11:11:00,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509144492] [2022-11-20 11:11:00,856 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:00,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-20 11:11:00,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:00,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-20 11:11:00,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=425, Unknown=1, NotChecked=0, Total=506 [2022-11-20 11:11:00,858 INFO L87 Difference]: Start difference. First operand 211 states and 299 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-20 11:11:01,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:01,622 INFO L93 Difference]: Finished difference Result 251 states and 350 transitions. [2022-11-20 11:11:01,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:11:01,623 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 6 states have call successors, (16) Word has length 142 [2022-11-20 11:11:01,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:01,625 INFO L225 Difference]: With dead ends: 251 [2022-11-20 11:11:01,625 INFO L226 Difference]: Without dead ends: 249 [2022-11-20 11:11:01,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=125, Invalid=630, Unknown=1, NotChecked=0, Total=756 [2022-11-20 11:11:01,626 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 37 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:01,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 156 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:11:01,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-11-20 11:11:01,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 247. [2022-11-20 11:11:01,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 127 states have (on average 1.110236220472441) internal successors, (141), 128 states have internal predecessors, (141), 103 states have call successors, (103), 16 states have call predecessors, (103), 16 states have return successors, (102), 102 states have call predecessors, (102), 102 states have call successors, (102) [2022-11-20 11:11:01,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 346 transitions. [2022-11-20 11:11:01,789 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 346 transitions. Word has length 142 [2022-11-20 11:11:01,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:01,790 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 346 transitions. [2022-11-20 11:11:01,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 13 states have internal predecessors, (30), 6 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-20 11:11:01,791 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 346 transitions. [2022-11-20 11:11:01,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-20 11:11:01,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:01,797 INFO L195 NwaCegarLoop]: trace histogram [19, 18, 18, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:01,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:02,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 11:11:02,003 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:02,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:02,004 INFO L85 PathProgramCache]: Analyzing trace with hash 851009848, now seen corresponding path program 4 times [2022-11-20 11:11:02,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:02,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003314195] [2022-11-20 11:11:02,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:02,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:02,018 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:11:02,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1713683510] [2022-11-20 11:11:02,018 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:11:02,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:02,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:02,026 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:02,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 11:11:02,116 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:11:02,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:11:02,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 11:11:02,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 187 proven. 47 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2022-11-20 11:11:02,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:02,632 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 57 proven. 53 refuted. 0 times theorem prover too weak. 657 trivial. 0 not checked. [2022-11-20 11:11:02,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:02,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003314195] [2022-11-20 11:11:02,633 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:11:02,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713683510] [2022-11-20 11:11:02,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713683510] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:02,633 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:02,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2022-11-20 11:11:02,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017478571] [2022-11-20 11:11:02,633 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:02,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:11:02,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:02,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:11:02,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:11:02,635 INFO L87 Difference]: Start difference. First operand 247 states and 346 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 17 states have internal predecessors, (51), 12 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (47), 12 states have call predecessors, (47), 12 states have call successors, (47) [2022-11-20 11:11:03,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:03,563 INFO L93 Difference]: Finished difference Result 360 states and 525 transitions. [2022-11-20 11:11:03,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-20 11:11:03,564 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 17 states have internal predecessors, (51), 12 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (47), 12 states have call predecessors, (47), 12 states have call successors, (47) Word has length 145 [2022-11-20 11:11:03,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:03,566 INFO L225 Difference]: With dead ends: 360 [2022-11-20 11:11:03,566 INFO L226 Difference]: Without dead ends: 258 [2022-11-20 11:11:03,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=286, Invalid=836, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 11:11:03,568 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 91 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:03,568 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 245 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:11:03,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-11-20 11:11:03,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 253. [2022-11-20 11:11:03,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 125 states have (on average 1.144) internal successors, (143), 126 states have internal predecessors, (143), 111 states have call successors, (111), 16 states have call predecessors, (111), 16 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) [2022-11-20 11:11:03,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 364 transitions. [2022-11-20 11:11:03,704 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 364 transitions. Word has length 145 [2022-11-20 11:11:03,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:03,704 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 364 transitions. [2022-11-20 11:11:03,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 17 states have internal predecessors, (51), 12 states have call successors, (47), 2 states have call predecessors, (47), 3 states have return successors, (47), 12 states have call predecessors, (47), 12 states have call successors, (47) [2022-11-20 11:11:03,705 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 364 transitions. [2022-11-20 11:11:03,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-20 11:11:03,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:03,707 INFO L195 NwaCegarLoop]: trace histogram [20, 19, 19, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:03,717 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:03,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 11:11:03,913 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:03,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:03,913 INFO L85 PathProgramCache]: Analyzing trace with hash 821448208, now seen corresponding path program 5 times [2022-11-20 11:11:03,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:03,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938993826] [2022-11-20 11:11:03,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:03,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:03,921 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:11:03,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019129769] [2022-11-20 11:11:03,922 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 11:11:03,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:03,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:03,923 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:03,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 11:11:04,025 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2022-11-20 11:11:04,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:11:04,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 11:11:04,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:04,196 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 246 proven. 51 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2022-11-20 11:11:04,196 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:04,582 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 66 proven. 45 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2022-11-20 11:11:04,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:04,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938993826] [2022-11-20 11:11:04,583 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:11:04,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019129769] [2022-11-20 11:11:04,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019129769] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:04,583 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:04,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 19 [2022-11-20 11:11:04,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801873264] [2022-11-20 11:11:04,584 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:04,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 11:11:04,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:04,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 11:11:04,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2022-11-20 11:11:04,585 INFO L87 Difference]: Start difference. First operand 253 states and 364 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 14 states have call successors, (50), 2 states have call predecessors, (50), 3 states have return successors, (50), 13 states have call predecessors, (50), 14 states have call successors, (50) [2022-11-20 11:11:05,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:05,441 INFO L93 Difference]: Finished difference Result 311 states and 448 transitions. [2022-11-20 11:11:05,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:11:05,441 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 14 states have call successors, (50), 2 states have call predecessors, (50), 3 states have return successors, (50), 13 states have call predecessors, (50), 14 states have call successors, (50) Word has length 147 [2022-11-20 11:11:05,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:05,443 INFO L225 Difference]: With dead ends: 311 [2022-11-20 11:11:05,443 INFO L226 Difference]: Without dead ends: 207 [2022-11-20 11:11:05,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=208, Invalid=722, Unknown=0, NotChecked=0, Total=930 [2022-11-20 11:11:05,445 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 73 mSDsluCounter, 309 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:05,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 373 Invalid, 635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 11:11:05,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-11-20 11:11:05,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 203. [2022-11-20 11:11:05,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 101 states have (on average 1.118811881188119) internal successors, (113), 102 states have internal predecessors, (113), 87 states have call successors, (87), 14 states have call predecessors, (87), 14 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-20 11:11:05,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 286 transitions. [2022-11-20 11:11:05,558 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 286 transitions. Word has length 147 [2022-11-20 11:11:05,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:05,559 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 286 transitions. [2022-11-20 11:11:05,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 19 states have internal predecessors, (49), 14 states have call successors, (50), 2 states have call predecessors, (50), 3 states have return successors, (50), 13 states have call predecessors, (50), 14 states have call successors, (50) [2022-11-20 11:11:05,559 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 286 transitions. [2022-11-20 11:11:05,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-20 11:11:05,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:05,561 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2022-11-20 11:11:05,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-11-20 11:11:05,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-20 11:11:05,767 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:05,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:05,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1812352379, now seen corresponding path program 3 times [2022-11-20 11:11:05,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:05,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431862497] [2022-11-20 11:11:05,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:05,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:05,779 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:11:05,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [871195309] [2022-11-20 11:11:05,780 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 11:11:05,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:05,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:05,781 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:05,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 11:11:05,863 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 11:11:05,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:11:05,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-20 11:11:05,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:06,455 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 99 proven. 31 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2022-11-20 11:11:06,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:06,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:06,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431862497] [2022-11-20 11:11:06,731 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:11:06,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871195309] [2022-11-20 11:11:06,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871195309] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 11:11:06,731 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 11:11:06,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2022-11-20 11:11:06,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34023922] [2022-11-20 11:11:06,732 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:06,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 11:11:06,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:06,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 11:11:06,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:11:06,733 INFO L87 Difference]: Start difference. First operand 203 states and 286 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 11:11:07,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:07,293 INFO L93 Difference]: Finished difference Result 214 states and 296 transitions. [2022-11-20 11:11:07,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:11:07,294 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 153 [2022-11-20 11:11:07,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:07,295 INFO L225 Difference]: With dead ends: 214 [2022-11-20 11:11:07,295 INFO L226 Difference]: Without dead ends: 168 [2022-11-20 11:11:07,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2022-11-20 11:11:07,297 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 20 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:07,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 168 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 11:11:07,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-20 11:11:07,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2022-11-20 11:11:07,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 84 states have (on average 1.119047619047619) internal successors, (94), 85 states have internal predecessors, (94), 71 states have call successors, (71), 11 states have call predecessors, (71), 11 states have return successors, (70), 70 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-20 11:11:07,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 235 transitions. [2022-11-20 11:11:07,392 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 235 transitions. Word has length 153 [2022-11-20 11:11:07,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:07,393 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 235 transitions. [2022-11-20 11:11:07,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-20 11:11:07,393 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 235 transitions. [2022-11-20 11:11:07,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-20 11:11:07,395 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:11:07,395 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:07,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:07,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:07,601 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:11:07,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:11:07,601 INFO L85 PathProgramCache]: Analyzing trace with hash 2018058068, now seen corresponding path program 4 times [2022-11-20 11:11:07,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:11:07,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839807142] [2022-11-20 11:11:07,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:11:07,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:11:07,612 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 11:11:07,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709243052] [2022-11-20 11:11:07,612 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 11:11:07,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:07,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:11:07,614 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 11:11:07,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 11:11:07,699 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 11:11:07,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 11:11:07,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 11:11:07,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 11:11:07,875 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 54 proven. 68 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2022-11-20 11:11:07,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 11:11:08,129 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 48 proven. 74 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2022-11-20 11:11:08,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:11:08,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839807142] [2022-11-20 11:11:08,130 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 11:11:08,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709243052] [2022-11-20 11:11:08,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709243052] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 11:11:08,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 11:11:08,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2022-11-20 11:11:08,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203820383] [2022-11-20 11:11:08,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 11:11:08,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 11:11:08,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:11:08,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 11:11:08,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:11:08,132 INFO L87 Difference]: Start difference. First operand 167 states and 235 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 12 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 11 states have call predecessors, (41), 11 states have call successors, (41) [2022-11-20 11:11:08,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:11:08,743 INFO L93 Difference]: Finished difference Result 175 states and 241 transitions. [2022-11-20 11:11:08,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 11:11:08,744 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 12 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 11 states have call predecessors, (41), 11 states have call successors, (41) Word has length 156 [2022-11-20 11:11:08,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:11:08,745 INFO L225 Difference]: With dead ends: 175 [2022-11-20 11:11:08,745 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 11:11:08,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 293 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2022-11-20 11:11:08,746 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 46 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:11:08,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 278 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 11:11:08,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 11:11:08,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 11:11:08,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 11:11:08,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 11:11:08,748 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 156 [2022-11-20 11:11:08,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:11:08,748 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 11:11:08,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 14 states have internal predecessors, (44), 12 states have call successors, (41), 2 states have call predecessors, (41), 2 states have return successors, (41), 11 states have call predecessors, (41), 11 states have call successors, (41) [2022-11-20 11:11:08,749 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 11:11:08,749 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 11:11:08,752 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 11:11:08,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-20 11:11:08,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 11:11:08,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 11:11:23,116 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse30 (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|))) (.cse29 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse14 (* 2 |ULTIMATE.start_main_~b~0#1|)) (.cse18 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse19 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse20 (= (+ .cse29 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|)) (.cse22 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse23 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse17 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse24 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse25 (= |ULTIMATE.start_main_~x~0#1| .cse30)) (.cse26 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse27 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (= |ULTIMATE.start_main_~a~0#1| .cse30)) (.cse1 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse15 (<= |ULTIMATE.start_main_~a~0#1| 2)) (.cse16 (+ |ULTIMATE.start_main_~b~0#1| 1)) (.cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse13 (+ |ULTIMATE.start_main_~x~0#1| 1)) (.cse4 (< |ULTIMATE.start_main_~yy~0#1| 2147483647)) (.cse5 (< (+ |ULTIMATE.start_main_~x~0#1| .cse29) |ULTIMATE.start_main_~y~0#1|)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse7 (<= 1 |ULTIMATE.start_main_~a~0#1|)) (.cse8 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse9 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse10 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse12 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|))) (or (let ((.cse3 (+ .cse14 |ULTIMATE.start_main_~c~0#1|))) (and .cse0 .cse1 .cse2 (<= .cse3 2) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (= 2 |ULTIMATE.start_main_~k~0#1|) (<= .cse13 .cse3))) (and (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse15 .cse2 (<= .cse16 |ULTIMATE.start_main_~c~0#1|) .cse4 .cse5 .cse6 .cse17 .cse8 .cse9 (<= |ULTIMATE.start_main_~c~0#1| 2) .cse10 .cse11) (let ((.cse21 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) (and (or (< |ULTIMATE.start_main_~c~0#1| (+ .cse14 1)) (< |ULTIMATE.start_main_~b~0#1| 2)) .cse18 .cse19 .cse20 (or (not .cse21) (<= .cse14 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) .cse22 .cse23 .cse9 (or (= |ULTIMATE.start_main_~c~0#1| 0) .cse21) .cse11 .cse24 .cse12 .cse25 .cse26 .cse27)) (and .cse18 .cse19 .cse20 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse22 .cse23 .cse17 .cse9 .cse11 .cse24 .cse12 .cse25 .cse26 .cse27) (let ((.cse28 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) (and .cse0 .cse1 .cse15 (<= .cse16 |ULTIMATE.start_main_~a~0#1|) .cse2 (<= .cse13 .cse28) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 (<= .cse28 2) .cse12))))) [2022-11-20 11:11:23,116 INFO L895 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (let ((.cse30 (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|))) (.cse29 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse14 (* 2 |ULTIMATE.start_main_~b~0#1|)) (.cse18 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse19 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse20 (= (+ .cse29 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|)) (.cse22 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse23 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse17 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse24 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse25 (= |ULTIMATE.start_main_~x~0#1| .cse30)) (.cse26 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse27 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (= |ULTIMATE.start_main_~a~0#1| .cse30)) (.cse1 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse15 (<= |ULTIMATE.start_main_~a~0#1| 2)) (.cse16 (+ |ULTIMATE.start_main_~b~0#1| 1)) (.cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse13 (+ |ULTIMATE.start_main_~x~0#1| 1)) (.cse4 (< |ULTIMATE.start_main_~yy~0#1| 2147483647)) (.cse5 (< (+ |ULTIMATE.start_main_~x~0#1| .cse29) |ULTIMATE.start_main_~y~0#1|)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse7 (<= 1 |ULTIMATE.start_main_~a~0#1|)) (.cse8 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse9 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse10 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse12 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|))) (or (let ((.cse3 (+ .cse14 |ULTIMATE.start_main_~c~0#1|))) (and .cse0 .cse1 .cse2 (<= .cse3 2) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (= 2 |ULTIMATE.start_main_~k~0#1|) (<= .cse13 .cse3))) (and (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse15 .cse2 (<= .cse16 |ULTIMATE.start_main_~c~0#1|) .cse4 .cse5 .cse6 .cse17 .cse8 .cse9 (<= |ULTIMATE.start_main_~c~0#1| 2) .cse10 .cse11) (let ((.cse21 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) (and (or (< |ULTIMATE.start_main_~c~0#1| (+ .cse14 1)) (< |ULTIMATE.start_main_~b~0#1| 2)) .cse18 .cse19 .cse20 (or (not .cse21) (<= .cse14 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) .cse22 .cse23 .cse9 (or (= |ULTIMATE.start_main_~c~0#1| 0) .cse21) .cse11 .cse24 .cse12 .cse25 .cse26 .cse27)) (and .cse18 .cse19 .cse20 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse22 .cse23 .cse17 .cse9 .cse11 .cse24 .cse12 .cse25 .cse26 .cse27) (let ((.cse28 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) (and .cse0 .cse1 .cse15 (<= .cse16 |ULTIMATE.start_main_~a~0#1|) .cse2 (<= .cse13 .cse28) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 (<= .cse28 2) .cse12))))) [2022-11-20 11:11:23,117 INFO L902 garLoopResultBuilder]: At program point L73(lines 18 74) the Hoare annotation is: true [2022-11-20 11:11:23,117 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 11:11:23,117 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 11:11:23,117 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 11:11:23,117 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2022-11-20 11:11:23,117 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2022-11-20 11:11:23,117 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse30 (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|))) (.cse29 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse14 (* 2 |ULTIMATE.start_main_~b~0#1|)) (.cse18 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse19 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse20 (= (+ .cse29 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|)) (.cse22 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse23 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse17 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse24 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse25 (= |ULTIMATE.start_main_~x~0#1| .cse30)) (.cse26 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse27 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (= |ULTIMATE.start_main_~a~0#1| .cse30)) (.cse1 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse15 (<= |ULTIMATE.start_main_~a~0#1| 2)) (.cse16 (+ |ULTIMATE.start_main_~b~0#1| 1)) (.cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse13 (+ |ULTIMATE.start_main_~x~0#1| 1)) (.cse4 (< |ULTIMATE.start_main_~yy~0#1| 2147483647)) (.cse5 (< (+ |ULTIMATE.start_main_~x~0#1| .cse29) |ULTIMATE.start_main_~y~0#1|)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse7 (<= 1 |ULTIMATE.start_main_~a~0#1|)) (.cse8 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse9 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse10 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse12 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|))) (or (let ((.cse3 (+ .cse14 |ULTIMATE.start_main_~c~0#1|))) (and .cse0 .cse1 .cse2 (<= .cse3 2) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (= 2 |ULTIMATE.start_main_~k~0#1|) (<= .cse13 .cse3))) (and (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse15 .cse2 (<= .cse16 |ULTIMATE.start_main_~c~0#1|) .cse4 .cse5 .cse6 .cse17 .cse8 .cse9 (<= |ULTIMATE.start_main_~c~0#1| 2) .cse10 .cse11) (let ((.cse21 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) (and (or (< |ULTIMATE.start_main_~c~0#1| (+ .cse14 1)) (< |ULTIMATE.start_main_~b~0#1| 2)) .cse18 .cse19 .cse20 (or (not .cse21) (<= .cse14 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) .cse22 .cse23 .cse9 (or (= |ULTIMATE.start_main_~c~0#1| 0) .cse21) .cse11 .cse24 .cse12 .cse25 .cse26 .cse27)) (and .cse18 .cse19 .cse20 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse22 .cse23 .cse17 .cse9 .cse11 .cse24 .cse12 .cse25 .cse26 .cse27) (let ((.cse28 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) (and .cse0 .cse1 .cse15 (<= .cse16 |ULTIMATE.start_main_~a~0#1|) .cse2 (<= .cse13 .cse28) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 (<= .cse28 2) .cse12))))) [2022-11-20 11:11:23,118 INFO L895 garLoopResultBuilder]: At program point L41-1(lines 39 68) the Hoare annotation is: (let ((.cse3 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (.cse5 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse1 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse2 (<= (+ |ULTIMATE.start_main_~b~0#1| 1) |ULTIMATE.start_main_~a~0#1|)) (.cse0 (* 2 |ULTIMATE.start_main_~b~0#1|)) (.cse10 (+ .cse5 .cse4)) (.cse6 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse7 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse8 (= .cse3 |ULTIMATE.start_main_~a~0#1|)) (.cse9 (<= |ULTIMATE.start_main_~x~0#1| 2))) (or (and (< |ULTIMATE.start_main_~c~0#1| .cse0) .cse1 (<= |ULTIMATE.start_main_~a~0#1| 2) .cse2 (< |ULTIMATE.start_main_~yy~0#1| 2147483647) (= .cse3 (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* 2 .cse4) (* 2 .cse5))) (< (+ |ULTIMATE.start_main_~x~0#1| .cse5) |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~s~0#1| 0) .cse6 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~r~0#1| 1) .cse7 .cse8) (and (<= (* 2 |ULTIMATE.start_main_~c~0#1|) 1) (<= 0 |ULTIMATE.start_main_~b~0#1|) .cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|) .cse2 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse6 .cse8 (<= .cse0 1) .cse9 (= .cse10 0)) (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|)) (= .cse10 |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse6 .cse7 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) 2) .cse8 .cse9 (= |ULTIMATE.start_main_~s~0#1| 1))))) [2022-11-20 11:11:23,118 INFO L895 garLoopResultBuilder]: At program point L41-2(lines 41 68) the Hoare annotation is: (let ((.cse0 (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)))) (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= .cse0 |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (= .cse0 0))) [2022-11-20 11:11:23,118 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 11:11:23,119 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2)) [2022-11-20 11:11:23,119 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse29 (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|))) (.cse28 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse14 (* 2 |ULTIMATE.start_main_~b~0#1|)) (.cse18 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse19 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse15 (= (+ .cse28 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|)) (.cse21 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse22 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse17 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse23 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse24 (= |ULTIMATE.start_main_~x~0#1| .cse29)) (.cse25 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse26 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (= |ULTIMATE.start_main_~a~0#1| .cse29)) (.cse1 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse16 (+ |ULTIMATE.start_main_~b~0#1| 1)) (.cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse13 (+ |ULTIMATE.start_main_~x~0#1| 1)) (.cse4 (< |ULTIMATE.start_main_~yy~0#1| 2147483647)) (.cse5 (< (+ |ULTIMATE.start_main_~x~0#1| .cse28) |ULTIMATE.start_main_~y~0#1|)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse7 (<= 1 |ULTIMATE.start_main_~a~0#1|)) (.cse8 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse9 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse10 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse12 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|))) (or (let ((.cse3 (+ .cse14 |ULTIMATE.start_main_~c~0#1|))) (and .cse0 .cse1 .cse2 (<= .cse3 2) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (= 2 |ULTIMATE.start_main_~k~0#1|) (<= .cse13 .cse3))) (and .cse0 .cse1 .cse15 (<= .cse16 |ULTIMATE.start_main_~c~0#1|) .cse4 (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse5 .cse17 .cse8 .cse9 (<= |ULTIMATE.start_main_~c~0#1| 2) .cse10 .cse11 .cse12) (let ((.cse20 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) (and (or (< |ULTIMATE.start_main_~c~0#1| (+ .cse14 1)) (< |ULTIMATE.start_main_~b~0#1| 2)) .cse18 .cse19 .cse15 (or (not .cse20) (<= .cse14 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) .cse21 .cse22 .cse9 (or (= |ULTIMATE.start_main_~c~0#1| 0) .cse20) .cse11 .cse23 .cse12 .cse24 .cse25 .cse26)) (and .cse18 .cse19 .cse15 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse21 .cse22 .cse17 .cse9 .cse11 .cse23 .cse12 .cse24 .cse25 .cse26) (let ((.cse27 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) (and .cse0 .cse1 (<= |ULTIMATE.start_main_~a~0#1| 2) (<= .cse16 |ULTIMATE.start_main_~a~0#1|) .cse2 (<= .cse13 .cse27) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 (<= .cse27 2) .cse12))))) [2022-11-20 11:11:23,119 INFO L899 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2022-11-20 11:11:23,119 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~y~0#1| 2) (<= 1 |ULTIMATE.start_main_~y~0#1|) (or (= |ULTIMATE.start_main_~b~0#1| 0) (= (+ (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|)) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|)) [2022-11-20 11:11:23,120 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (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_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~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_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) 2) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (= |ULTIMATE.start_main_~s~0#1| 1)) [2022-11-20 11:11:23,120 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (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_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~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_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (<= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) 2) (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 2) (= |ULTIMATE.start_main_~s~0#1| 1)) [2022-11-20 11:11:23,120 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-11-20 11:11:23,120 INFO L902 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-11-20 11:11:23,121 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-11-20 11:11:23,121 INFO L899 garLoopResultBuilder]: For program point L51(lines 47 56) no Hoare annotation was computed. [2022-11-20 11:11:23,121 INFO L895 garLoopResultBuilder]: At program point L47-2(lines 47 56) the Hoare annotation is: (let ((.cse30 (+ |ULTIMATE.start_main_~c~0#1| (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~k~0#1|))) (.cse29 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|))) (let ((.cse14 (* 2 |ULTIMATE.start_main_~b~0#1|)) (.cse18 (= |ULTIMATE.start_main_~yy~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse19 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse20 (= (+ .cse29 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~b~0#1|)) (.cse22 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse23 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse17 (= |ULTIMATE.start_main_~k~0#1| 0)) (.cse24 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse25 (= |ULTIMATE.start_main_~x~0#1| .cse30)) (.cse26 (<= |ULTIMATE.start_main_~x~0#1| 2)) (.cse27 (= |ULTIMATE.start_main_~s~0#1| 1)) (.cse0 (= |ULTIMATE.start_main_~a~0#1| .cse30)) (.cse1 (<= |ULTIMATE.start_main_~y~0#1| 2)) (.cse15 (<= |ULTIMATE.start_main_~a~0#1| 2)) (.cse16 (+ |ULTIMATE.start_main_~b~0#1| 1)) (.cse2 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse13 (+ |ULTIMATE.start_main_~x~0#1| 1)) (.cse4 (< |ULTIMATE.start_main_~yy~0#1| 2147483647)) (.cse5 (< (+ |ULTIMATE.start_main_~x~0#1| .cse29) |ULTIMATE.start_main_~y~0#1|)) (.cse6 (= |ULTIMATE.start_main_~q~0#1| 1)) (.cse7 (<= 1 |ULTIMATE.start_main_~a~0#1|)) (.cse8 (= |ULTIMATE.start_main_~s~0#1| 0)) (.cse9 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse10 (= |ULTIMATE.start_main_~r~0#1| 1)) (.cse11 (= |ULTIMATE.start_main_~xy~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|))) (.cse12 (= (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) |ULTIMATE.start_main_~a~0#1|))) (or (let ((.cse3 (+ .cse14 |ULTIMATE.start_main_~c~0#1|))) (and .cse0 .cse1 .cse2 (<= .cse3 2) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 (= 2 |ULTIMATE.start_main_~k~0#1|) (<= .cse13 .cse3))) (and (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) .cse15 .cse2 (<= .cse16 |ULTIMATE.start_main_~c~0#1|) .cse4 .cse5 .cse6 .cse17 .cse8 .cse9 (<= |ULTIMATE.start_main_~c~0#1| 2) .cse10 .cse11) (let ((.cse21 (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) (and (or (< |ULTIMATE.start_main_~c~0#1| (+ .cse14 1)) (< |ULTIMATE.start_main_~b~0#1| 2)) .cse18 .cse19 .cse20 (or (not .cse21) (<= .cse14 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|)) .cse22 .cse23 .cse9 (or (= |ULTIMATE.start_main_~c~0#1| 0) .cse21) .cse11 .cse24 .cse12 .cse25 .cse26 .cse27)) (and .cse18 .cse19 .cse20 (<= |ULTIMATE.start_main_~b~0#1| 2) .cse22 .cse23 .cse17 .cse9 .cse11 .cse24 .cse12 .cse25 .cse26 .cse27) (let ((.cse28 (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|))) (and .cse0 .cse1 .cse15 (<= .cse16 |ULTIMATE.start_main_~a~0#1|) .cse2 (<= .cse13 .cse28) .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 (<= .cse28 2) .cse12))))) [2022-11-20 11:11:23,121 INFO L899 garLoopResultBuilder]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2022-11-20 11:11:23,122 INFO L899 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2022-11-20 11:11:23,122 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-11-20 11:11:23,123 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-11-20 11:11:23,123 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-11-20 11:11:23,123 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-11-20 11:11:23,124 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-11-20 11:11:23,124 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-11-20 11:11:23,124 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-11-20 11:11:23,124 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-11-20 11:11:23,124 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-11-20 11:11:23,125 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-11-20 11:11:23,130 INFO L444 BasicCegarLoop]: Path program histogram: [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:11:23,133 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 11:11:23,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 11:11:23 BoogieIcfgContainer [2022-11-20 11:11:23,165 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 11:11:23,166 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 11:11:23,166 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 11:11:23,166 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 11:11:23,179 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:09:48" (3/4) ... [2022-11-20 11:11:23,183 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 11:11:23,189 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-20 11:11:23,189 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-20 11:11:23,194 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-20 11:11:23,194 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-20 11:11:23,194 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 11:11:23,194 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 11:11:23,247 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 11:11:23,248 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 11:11:23,249 INFO L158 Benchmark]: Toolchain (without parser) took 95357.85ms. Allocated memory was 192.9MB in the beginning and 281.0MB in the end (delta: 88.1MB). Free memory was 159.5MB in the beginning and 231.0MB in the end (delta: -71.4MB). Peak memory consumption was 18.3MB. Max. memory is 16.1GB. [2022-11-20 11:11:23,249 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory was 85.1MB in the beginning and 84.9MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 11:11:23,249 INFO L158 Benchmark]: CACSL2BoogieTranslator took 245.19ms. Allocated memory is still 192.9MB. Free memory was 159.5MB in the beginning and 149.2MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 11:11:23,250 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.47ms. Allocated memory is still 192.9MB. Free memory was 148.6MB in the beginning and 147.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:11:23,256 INFO L158 Benchmark]: Boogie Preprocessor took 25.70ms. Allocated memory is still 192.9MB. Free memory was 147.1MB in the beginning and 145.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:11:23,257 INFO L158 Benchmark]: RCFGBuilder took 381.65ms. Allocated memory is still 192.9MB. Free memory was 145.7MB in the beginning and 133.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 11:11:23,258 INFO L158 Benchmark]: TraceAbstraction took 94580.12ms. Allocated memory was 192.9MB in the beginning and 281.0MB in the end (delta: 88.1MB). Free memory was 132.4MB in the beginning and 234.1MB in the end (delta: -101.7MB). Peak memory consumption was 144.2MB. Max. memory is 16.1GB. [2022-11-20 11:11:23,261 INFO L158 Benchmark]: Witness Printer took 81.87ms. Allocated memory is still 281.0MB. Free memory was 234.1MB in the beginning and 231.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 11:11:23,263 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory was 85.1MB in the beginning and 84.9MB in the end (delta: 134.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 245.19ms. Allocated memory is still 192.9MB. Free memory was 159.5MB in the beginning and 149.2MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.47ms. Allocated memory is still 192.9MB. Free memory was 148.6MB in the beginning and 147.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.70ms. Allocated memory is still 192.9MB. Free memory was 147.1MB in the beginning and 145.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 381.65ms. Allocated memory is still 192.9MB. Free memory was 145.7MB in the beginning and 133.1MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 94580.12ms. Allocated memory was 192.9MB in the beginning and 281.0MB in the end (delta: 88.1MB). Free memory was 132.4MB in the beginning and 234.1MB in the end (delta: -101.7MB). Peak memory consumption was 144.2MB. Max. memory is 16.1GB. * Witness Printer took 81.87ms. Allocated memory is still 281.0MB. Free memory was 234.1MB in the beginning and 231.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 94.5s, OverallIterations: 20, TraceHistogramMax: 21, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.1s, AutomataDifference: 49.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 14.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1061 SdHoareTripleChecker+Valid, 25.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 971 mSDsluCounter, 4370 SdHoareTripleChecker+Invalid, 24.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 85 IncrementalHoareTripleChecker+Unchecked, 3398 mSDsCounter, 1211 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7350 IncrementalHoareTripleChecker+Invalid, 8646 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1211 mSolverCounterUnsat, 972 mSDtfsCounter, 7350 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3332 GetRequests, 2884 SyntacticMatches, 16 SemanticMatches, 432 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2212 ImplicationChecksByTransitivity, 34.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=253occurred in iteration=17, InterpolantAutomatonStates: 274, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 131 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 17 LocationsWithAnnotation, 290 PreInvPairs, 366 NumberOfFragments, 2175 HoareAnnotationTreeSize, 290 FomulaSimplifications, 6611 FormulaSimplificationTreeSizeReduction, 1.1s HoareSimplificationTime, 17 FomulaSimplificationsInter, 21440 FormulaSimplificationTreeSizeReductionInter, 13.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 22.7s InterpolantComputationTime, 1896 NumberOfCodeBlocks, 1702 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 3033 ConstructedInterpolants, 8 QuantifiedInterpolants, 12488 SizeOfPredicates, 148 NumberOfNonLiveVariables, 4119 ConjunctsInSsa, 542 ConjunctsInUnsatCore, 33 InterpolantComputations, 5 PerfectInterpolantSequences, 10772/11632 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: 47]: Loop Invariant Derived loop invariant: (((((((((((((((((a == c + b * k && y <= 2) && b == x) && 2 * b + c <= 2) && yy < 2147483647) && x + s * y < y) && q == 1) && 1 <= a) && s == 0) && 1 <= x) && r == 1) && xy == x * y) && r * y + p * x == a) && 2 == k) && x + 1 <= 2 * b + c) || (((((((((((((p == 0 && a == y) && a <= 2) && b == x) && b + 1 <= c) && yy < 2147483647) && x + s * y < y) && q == 1) && k == 0) && s == 0) && 1 <= x) && c <= 2) && r == 1) && xy == x * y)) || (((((((((((((((c < 2 * b + 1 || b < 2) && yy == y * y) && 1 <= y) && s * y + q * x == b) && ((!(b <= c) || 2 * b <= c) || b == c)) && r == 0) && q == 0) && 1 <= x) && (c == 0 || b <= c)) && xy == x * y) && a == x) && r * y + p * x == a) && x == c + b * k) && x <= 2) && s == 1)) || (((((((((((((yy == y * y && 1 <= y) && s * y + q * x == b) && b <= 2) && r == 0) && q == 0) && k == 0) && 1 <= x) && xy == x * y) && a == x) && r * y + p * x == a) && x == c + b * k) && x <= 2) && s == 1)) || (((((((((((((((a == c + b * k && y <= 2) && a <= 2) && b + 1 <= a) && b == x) && x + 1 <= b + c) && yy < 2147483647) && x + s * y < y) && q == 1) && 1 <= a) && s == 0) && 1 <= x) && r == 1) && xy == x * y) && b + c <= 2) && r * y + p * x == a) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((((((((((c < 2 * b && y <= 2) && a <= 2) && b + 1 <= a) && yy < 2147483647) && r * y + p * x == k * q * x + k * s * y + 2 * (q * x) + 2 * (s * y)) && x + s * y < y) && q == 1) && s == 0) && 1 <= x) && b <= c) && r == 1) && xy == x * y) && r * y + p * x == a) || ((((((((((2 * c <= 1 && 0 <= b) && y <= 2) && 1 <= y) && b + 1 <= a) && 0 <= c) && 1 <= x) && r * y + p * x == a) && 2 * b <= 1) && x <= 2) && s * y + q * x == 0)) || ((((((((((((c == 0 && yy == y * y) && s * y + q * x == b) && 1 <= b) && r == 0) && q == 0) && 1 <= x) && xy == x * y) && a == x) && b + c <= 2) && r * y + p * x == a) && x <= 2) && s == 1) RESULT: Ultimate proved your program to be correct! [2022-11-20 11:11:23,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96165259-d39b-494e-a3e9-f68aac63d972/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE