./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS --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 3d9847fe213bf8df5d23c53d2bc8b53fb384c85820b87c09591484702dabefc3 --- 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-4e7fbc6 [2022-11-23 03:12:17,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 03:12:17,055 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 03:12:17,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 03:12:17,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 03:12:17,078 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 03:12:17,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 03:12:17,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 03:12:17,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 03:12:17,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 03:12:17,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 03:12:17,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 03:12:17,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 03:12:17,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 03:12:17,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 03:12:17,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 03:12:17,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 03:12:17,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 03:12:17,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 03:12:17,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 03:12:17,098 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 03:12:17,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 03:12:17,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 03:12:17,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 03:12:17,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 03:12:17,106 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 03:12:17,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 03:12:17,108 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 03:12:17,108 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 03:12:17,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 03:12:17,110 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 03:12:17,111 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 03:12:17,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 03:12:17,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 03:12:17,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 03:12:17,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 03:12:17,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 03:12:17,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 03:12:17,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 03:12:17,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 03:12:17,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 03:12:17,123 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-23 03:12:17,161 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 03:12:17,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 03:12:17,166 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 03:12:17,166 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 03:12:17,167 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 03:12:17,168 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 03:12:17,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 03:12:17,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 03:12:17,169 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 03:12:17,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 03:12:17,170 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 03:12:17,171 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 03:12:17,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 03:12:17,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 03:12:17,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 03:12:17,172 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 03:12:17,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 03:12:17,172 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 03:12:17,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 03:12:17,172 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 03:12:17,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 03:12:17,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 03:12:17,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 03:12:17,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 03:12:17,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:12:17,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 03:12:17,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 03:12:17,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 03:12:17,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 03:12:17,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 03:12:17,176 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 03:12:17,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 03:12:17,176 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 03:12:17,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 03:12:17,177 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d9847fe213bf8df5d23c53d2bc8b53fb384c85820b87c09591484702dabefc3 [2022-11-23 03:12:17,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 03:12:17,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 03:12:17,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 03:12:17,507 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 03:12:17,507 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 03:12:17,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound10.c [2022-11-23 03:12:20,473 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 03:12:20,708 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 03:12:20,709 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound10.c [2022-11-23 03:12:20,717 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/data/72bbc2299/4c2063d168c84e1981ada13f25549c0d/FLAG7a09b3028 [2022-11-23 03:12:20,733 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/data/72bbc2299/4c2063d168c84e1981ada13f25549c0d [2022-11-23 03:12:20,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 03:12:20,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 03:12:20,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 03:12:20,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 03:12:20,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 03:12:20,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:12:20" (1/1) ... [2022-11-23 03:12:20,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e04f6ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:20, skipping insertion in model container [2022-11-23 03:12:20,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:12:20" (1/1) ... [2022-11-23 03:12:20,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 03:12:20,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 03:12:20,974 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_840904f5-4f45-4817-a93a-310fb2bc3fec/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound10.c[489,502] [2022-11-23 03:12:21,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:12:21,026 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 03:12:21,042 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_840904f5-4f45-4817-a93a-310fb2bc3fec/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound10.c[489,502] [2022-11-23 03:12:21,070 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 03:12:21,088 INFO L208 MainTranslator]: Completed translation [2022-11-23 03:12:21,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:21 WrapperNode [2022-11-23 03:12:21,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 03:12:21,091 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 03:12:21,091 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 03:12:21,091 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 03:12:21,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:21" (1/1) ... [2022-11-23 03:12:21,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:21" (1/1) ... [2022-11-23 03:12:21,134 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2022-11-23 03:12:21,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 03:12:21,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 03:12:21,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 03:12:21,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 03:12:21,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:21" (1/1) ... [2022-11-23 03:12:21,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:21" (1/1) ... [2022-11-23 03:12:21,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:21" (1/1) ... [2022-11-23 03:12:21,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:21" (1/1) ... [2022-11-23 03:12:21,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:21" (1/1) ... [2022-11-23 03:12:21,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:21" (1/1) ... [2022-11-23 03:12:21,174 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:21" (1/1) ... [2022-11-23 03:12:21,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:21" (1/1) ... [2022-11-23 03:12:21,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 03:12:21,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 03:12:21,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 03:12:21,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 03:12:21,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:21" (1/1) ... [2022-11-23 03:12:21,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 03:12:21,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:12:21,223 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 03:12:21,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 03:12:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 03:12:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 03:12:21,269 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 03:12:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 03:12:21,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 03:12:21,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 03:12:21,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-23 03:12:21,270 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-23 03:12:21,349 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 03:12:21,351 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 03:12:21,509 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 03:12:21,516 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 03:12:21,516 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 03:12:21,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:12:21 BoogieIcfgContainer [2022-11-23 03:12:21,518 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 03:12:21,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 03:12:21,521 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 03:12:21,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 03:12:21,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:12:20" (1/3) ... [2022-11-23 03:12:21,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7664bc54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:12:21, skipping insertion in model container [2022-11-23 03:12:21,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:12:21" (2/3) ... [2022-11-23 03:12:21,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7664bc54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:12:21, skipping insertion in model container [2022-11-23 03:12:21,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:12:21" (3/3) ... [2022-11-23 03:12:21,528 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound10.c [2022-11-23 03:12:21,549 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 03:12:21,549 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 03:12:21,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 03:12:21,610 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;@3a4faab9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 03:12:21,611 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 03:12:21,615 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-23 03:12:21,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-23 03:12:21,624 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:12:21,625 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:12:21,625 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:12:21,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:12:21,632 INFO L85 PathProgramCache]: Analyzing trace with hash 516392259, now seen corresponding path program 1 times [2022-11-23 03:12:21,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:12:21,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998223557] [2022-11-23 03:12:21,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:21,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:12:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:12:21,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-23 03:12:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:12:21,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 03:12:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:12:21,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-23 03:12:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:12:21,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 03:12:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:12:21,883 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 03:12:21,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:12:21,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998223557] [2022-11-23 03:12:21,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998223557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:12:21,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:12:21,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 03:12:21,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923920183] [2022-11-23 03:12:21,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:12:21,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 03:12:21,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:12:21,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 03:12:21,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:12:21,937 INFO L87 Difference]: Start difference. First operand has 32 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 03:12:21,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:12:21,980 INFO L93 Difference]: Finished difference Result 61 states and 99 transitions. [2022-11-23 03:12:21,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 03:12:21,983 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2022-11-23 03:12:21,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:12:21,995 INFO L225 Difference]: With dead ends: 61 [2022-11-23 03:12:21,995 INFO L226 Difference]: Without dead ends: 28 [2022-11-23 03:12:22,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 03:12:22,006 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:12:22,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:12:22,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-23 03:12:22,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-11-23 03:12:22,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-23 03:12:22,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 38 transitions. [2022-11-23 03:12:22,061 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 38 transitions. Word has length 29 [2022-11-23 03:12:22,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:12:22,063 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 38 transitions. [2022-11-23 03:12:22,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 03:12:22,064 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 38 transitions. [2022-11-23 03:12:22,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-23 03:12:22,067 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:12:22,069 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:12:22,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 03:12:22,070 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:12:22,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:12:22,071 INFO L85 PathProgramCache]: Analyzing trace with hash 501437177, now seen corresponding path program 1 times [2022-11-23 03:12:22,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:12:22,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848879267] [2022-11-23 03:12:22,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:22,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:12:22,122 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:12:22,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1306280394] [2022-11-23 03:12:22,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:22,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:12:22,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:12:22,131 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:12:22,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 03:12:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:12:22,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-23 03:12:22,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:12:22,485 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-23 03:12:22,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:12:22,692 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 03:12:22,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:12:22,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848879267] [2022-11-23 03:12:22,696 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:12:22,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306280394] [2022-11-23 03:12:22,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306280394] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 03:12:22,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:12:22,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-23 03:12:22,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944453527] [2022-11-23 03:12:22,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:12:22,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:12:22,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:12:22,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:12:22,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-23 03:12:22,706 INFO L87 Difference]: Start difference. First operand 28 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 03:12:23,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:12:23,137 INFO L93 Difference]: Finished difference Result 44 states and 61 transitions. [2022-11-23 03:12:23,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:12:23,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2022-11-23 03:12:23,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:12:23,140 INFO L225 Difference]: With dead ends: 44 [2022-11-23 03:12:23,140 INFO L226 Difference]: Without dead ends: 42 [2022-11-23 03:12:23,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-23 03:12:23,142 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 03:12:23,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 126 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 1 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 03:12:23,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-23 03:12:23,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-11-23 03:12:23,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 20 states have (on average 1.25) internal successors, (25), 22 states have internal predecessors, (25), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-23 03:12:23,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 58 transitions. [2022-11-23 03:12:23,159 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 58 transitions. Word has length 29 [2022-11-23 03:12:23,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:12:23,159 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 58 transitions. [2022-11-23 03:12:23,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-23 03:12:23,160 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 58 transitions. [2022-11-23 03:12:23,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-23 03:12:23,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:12:23,161 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:12:23,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 03:12:23,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:12:23,367 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:12:23,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:12:23,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1017640517, now seen corresponding path program 1 times [2022-11-23 03:12:23,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:12:23,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430336902] [2022-11-23 03:12:23,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:23,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:12:23,400 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:12:23,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105574062] [2022-11-23 03:12:23,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:23,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:12:23,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:12:23,405 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:12:23,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 03:12:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:12:23,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 03:12:23,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:12:23,681 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-23 03:12:23,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:12:23,802 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-23 03:12:23,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:12:23,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430336902] [2022-11-23 03:12:23,803 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:12:23,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105574062] [2022-11-23 03:12:23,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105574062] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 03:12:23,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:12:23,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-11-23 03:12:23,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955645565] [2022-11-23 03:12:23,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:12:23,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:12:23,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:12:23,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:12:23,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:12:23,808 INFO L87 Difference]: Start difference. First operand 41 states and 58 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 03:12:23,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:12:23,939 INFO L93 Difference]: Finished difference Result 66 states and 98 transitions. [2022-11-23 03:12:23,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 03:12:23,940 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2022-11-23 03:12:23,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:12:23,943 INFO L225 Difference]: With dead ends: 66 [2022-11-23 03:12:23,943 INFO L226 Difference]: Without dead ends: 64 [2022-11-23 03:12:23,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-11-23 03:12:23,945 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:12:23,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 120 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:12:23,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-23 03:12:23,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2022-11-23 03:12:23,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 29 states have (on average 1.3103448275862069) internal successors, (38), 31 states have internal predecessors, (38), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2022-11-23 03:12:23,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2022-11-23 03:12:23,967 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 34 [2022-11-23 03:12:23,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:12:23,967 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2022-11-23 03:12:23,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-23 03:12:23,967 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2022-11-23 03:12:23,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-23 03:12:23,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:12:23,972 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:12:23,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 03:12:24,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:12:24,178 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:12:24,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:12:24,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1133401081, now seen corresponding path program 1 times [2022-11-23 03:12:24,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:12:24,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804205317] [2022-11-23 03:12:24,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:24,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:12:24,196 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:12:24,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310287837] [2022-11-23 03:12:24,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:24,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:12:24,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:12:24,208 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:12:24,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 03:12:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:12:24,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-23 03:12:24,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:12:24,533 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 13 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-23 03:12:24,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:12:24,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:12:24,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804205317] [2022-11-23 03:12:24,749 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:12:24,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310287837] [2022-11-23 03:12:24,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310287837] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:12:24,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:12:24,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2022-11-23 03:12:24,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755407079] [2022-11-23 03:12:24,750 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-23 03:12:24,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 03:12:24,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:12:24,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 03:12:24,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-23 03:12:24,752 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-23 03:12:25,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:12:25,092 INFO L93 Difference]: Finished difference Result 64 states and 89 transitions. [2022-11-23 03:12:25,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 03:12:25,093 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 39 [2022-11-23 03:12:25,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:12:25,095 INFO L225 Difference]: With dead ends: 64 [2022-11-23 03:12:25,095 INFO L226 Difference]: Without dead ends: 60 [2022-11-23 03:12:25,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-23 03:12:25,096 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 30 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 03:12:25,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 96 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 03:12:25,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-11-23 03:12:25,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-11-23 03:12:25,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 32 states have (on average 1.28125) internal successors, (41), 34 states have internal predecessors, (41), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-23 03:12:25,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 83 transitions. [2022-11-23 03:12:25,129 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 83 transitions. Word has length 39 [2022-11-23 03:12:25,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:12:25,131 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 83 transitions. [2022-11-23 03:12:25,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 9 states have internal predecessors, (20), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2022-11-23 03:12:25,137 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 83 transitions. [2022-11-23 03:12:25,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-23 03:12:25,140 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:12:25,140 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:12:25,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 03:12:25,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:12:25,346 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:12:25,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:12:25,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1954831506, now seen corresponding path program 1 times [2022-11-23 03:12:25,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:12:25,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774155595] [2022-11-23 03:12:25,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:25,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:12:25,361 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:12:25,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1695804913] [2022-11-23 03:12:25,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:25,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:12:25,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:12:25,375 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:12:25,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 03:12:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:12:25,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-23 03:12:25,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:12:25,459 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 03:12:25,459 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 03:12:25,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:12:25,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774155595] [2022-11-23 03:12:25,459 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:12:25,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695804913] [2022-11-23 03:12:25,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695804913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 03:12:25,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 03:12:25,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 03:12:25,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966216965] [2022-11-23 03:12:25,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 03:12:25,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 03:12:25,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:12:25,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 03:12:25,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 03:12:25,462 INFO L87 Difference]: Start difference. First operand 60 states and 83 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-23 03:12:25,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:12:25,520 INFO L93 Difference]: Finished difference Result 66 states and 88 transitions. [2022-11-23 03:12:25,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 03:12:25,521 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 45 [2022-11-23 03:12:25,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:12:25,525 INFO L225 Difference]: With dead ends: 66 [2022-11-23 03:12:25,525 INFO L226 Difference]: Without dead ends: 64 [2022-11-23 03:12:25,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-23 03:12:25,526 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 5 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 03:12:25,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 123 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 03:12:25,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-23 03:12:25,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-23 03:12:25,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 37 states have internal predecessors, (44), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-23 03:12:25,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2022-11-23 03:12:25,546 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 45 [2022-11-23 03:12:25,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:12:25,547 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2022-11-23 03:12:25,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-23 03:12:25,547 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2022-11-23 03:12:25,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-23 03:12:25,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:12:25,549 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:12:25,561 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 03:12:25,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:12:25,755 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:12:25,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:12:25,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1265228631, now seen corresponding path program 1 times [2022-11-23 03:12:25,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:12:25,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501672738] [2022-11-23 03:12:25,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:25,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:12:25,777 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:12:25,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1914239910] [2022-11-23 03:12:25,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:25,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:12:25,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:12:25,787 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:12:25,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 03:12:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:12:25,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-23 03:12:25,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:12:25,965 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-23 03:12:25,965 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:12:26,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:12:26,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501672738] [2022-11-23 03:12:26,081 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:12:26,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914239910] [2022-11-23 03:12:26,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914239910] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 03:12:26,081 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-23 03:12:26,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-11-23 03:12:26,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493924454] [2022-11-23 03:12:26,082 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-23 03:12:26,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 03:12:26,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:12:26,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 03:12:26,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-23 03:12:26,083 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 03:12:26,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:12:26,212 INFO L93 Difference]: Finished difference Result 80 states and 104 transitions. [2022-11-23 03:12:26,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 03:12:26,213 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2022-11-23 03:12:26,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:12:26,214 INFO L225 Difference]: With dead ends: 80 [2022-11-23 03:12:26,215 INFO L226 Difference]: Without dead ends: 78 [2022-11-23 03:12:26,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:12:26,216 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 8 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:12:26,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 149 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:12:26,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-23 03:12:26,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 75. [2022-11-23 03:12:26,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 44 states have internal predecessors, (50), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-23 03:12:26,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2022-11-23 03:12:26,240 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 47 [2022-11-23 03:12:26,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:12:26,241 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2022-11-23 03:12:26,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 03:12:26,241 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2022-11-23 03:12:26,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-23 03:12:26,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:12:26,247 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:12:26,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 03:12:26,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:12:26,456 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:12:26,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:12:26,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1617953190, now seen corresponding path program 1 times [2022-11-23 03:12:26,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:12:26,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490416065] [2022-11-23 03:12:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:26,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:12:26,471 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:12:26,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2117743455] [2022-11-23 03:12:26,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:26,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:12:26,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:12:26,477 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:12:26,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 03:12:26,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:12:26,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-23 03:12:26,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:12:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 03:12:26,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:12:26,824 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 03:12:26,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:12:26,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490416065] [2022-11-23 03:12:26,824 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:12:26,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117743455] [2022-11-23 03:12:26,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117743455] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:12:26,825 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:12:26,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2022-11-23 03:12:26,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517736897] [2022-11-23 03:12:26,826 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:12:26,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 03:12:26,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:12:26,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 03:12:26,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-23 03:12:26,828 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand has 12 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-23 03:12:27,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:12:27,026 INFO L93 Difference]: Finished difference Result 84 states and 108 transitions. [2022-11-23 03:12:27,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 03:12:27,027 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 50 [2022-11-23 03:12:27,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:12:27,028 INFO L225 Difference]: With dead ends: 84 [2022-11-23 03:12:27,028 INFO L226 Difference]: Without dead ends: 80 [2022-11-23 03:12:27,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-11-23 03:12:27,030 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 19 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 03:12:27,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 119 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 03:12:27,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-23 03:12:27,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-11-23 03:12:27,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 48 states have internal predecessors, (52), 25 states have call successors, (25), 9 states have call predecessors, (25), 9 states have return successors, (24), 22 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-23 03:12:27,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 101 transitions. [2022-11-23 03:12:27,049 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 101 transitions. Word has length 50 [2022-11-23 03:12:27,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:12:27,049 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 101 transitions. [2022-11-23 03:12:27,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 9 states have internal predecessors, (23), 5 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-23 03:12:27,050 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 101 transitions. [2022-11-23 03:12:27,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-23 03:12:27,051 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:12:27,051 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:12:27,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 03:12:27,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:12:27,257 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:12:27,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:12:27,257 INFO L85 PathProgramCache]: Analyzing trace with hash 860577929, now seen corresponding path program 1 times [2022-11-23 03:12:27,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:12:27,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968651083] [2022-11-23 03:12:27,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:27,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:12:27,269 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:12:27,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234749698] [2022-11-23 03:12:27,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:27,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:12:27,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:12:27,271 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:12:27,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 03:12:27,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:12:27,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-23 03:12:27,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:12:27,690 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-23 03:12:27,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:12:27,840 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-23 03:12:27,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:12:27,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968651083] [2022-11-23 03:12:27,840 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:12:27,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234749698] [2022-11-23 03:12:27,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234749698] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:12:27,841 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:12:27,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2022-11-23 03:12:27,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006445185] [2022-11-23 03:12:27,842 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:12:27,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 03:12:27,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:12:27,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 03:12:27,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-23 03:12:27,843 INFO L87 Difference]: Start difference. First operand 80 states and 101 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-23 03:12:28,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:12:28,781 INFO L93 Difference]: Finished difference Result 106 states and 137 transitions. [2022-11-23 03:12:28,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 03:12:28,782 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) Word has length 52 [2022-11-23 03:12:28,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:12:28,783 INFO L225 Difference]: With dead ends: 106 [2022-11-23 03:12:28,784 INFO L226 Difference]: Without dead ends: 99 [2022-11-23 03:12:28,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-11-23 03:12:28,785 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 50 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 03:12:28,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 149 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 03:12:28,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-23 03:12:28,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 84. [2022-11-23 03:12:28,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 53 states have internal predecessors, (57), 21 states have call successors, (21), 11 states have call predecessors, (21), 11 states have return successors, (20), 19 states have call predecessors, (20), 20 states have call successors, (20) [2022-11-23 03:12:28,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 98 transitions. [2022-11-23 03:12:28,810 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 98 transitions. Word has length 52 [2022-11-23 03:12:28,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:12:28,810 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 98 transitions. [2022-11-23 03:12:28,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 11 states have internal predecessors, (28), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 7 states have call predecessors, (16), 6 states have call successors, (16) [2022-11-23 03:12:28,811 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 98 transitions. [2022-11-23 03:12:28,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-23 03:12:28,812 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 03:12:28,812 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:12:28,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 03:12:29,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-23 03:12:29,018 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 03:12:29,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 03:12:29,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1236716699, now seen corresponding path program 1 times [2022-11-23 03:12:29,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 03:12:29,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238077496] [2022-11-23 03:12:29,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:29,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 03:12:29,034 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 03:12:29,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560225666] [2022-11-23 03:12:29,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 03:12:29,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 03:12:29,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 03:12:29,039 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 03:12:29,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 03:12:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 03:12:29,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-23 03:12:29,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 03:12:29,395 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 18 proven. 13 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-23 03:12:29,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 03:12:29,616 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-23 03:12:29,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 03:12:29,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238077496] [2022-11-23 03:12:29,620 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 03:12:29,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560225666] [2022-11-23 03:12:29,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560225666] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 03:12:29,620 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 03:12:29,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2022-11-23 03:12:29,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451359799] [2022-11-23 03:12:29,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 03:12:29,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 03:12:29,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 03:12:29,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 03:12:29,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-11-23 03:12:29,628 INFO L87 Difference]: Start difference. First operand 84 states and 98 transitions. Second operand has 15 states, 15 states have (on average 2.2) internal successors, (33), 12 states have internal predecessors, (33), 8 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-23 03:12:30,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 03:12:30,406 INFO L93 Difference]: Finished difference Result 99 states and 124 transitions. [2022-11-23 03:12:30,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 03:12:30,407 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 12 states have internal predecessors, (33), 8 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 65 [2022-11-23 03:12:30,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 03:12:30,407 INFO L225 Difference]: With dead ends: 99 [2022-11-23 03:12:30,407 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 03:12:30,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2022-11-23 03:12:30,409 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 30 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 03:12:30,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 257 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 03:12:30,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 03:12:30,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 03:12:30,410 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) [2022-11-23 03:12:30,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 03:12:30,410 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 65 [2022-11-23 03:12:30,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 03:12:30,411 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 03:12:30,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.2) internal successors, (33), 12 states have internal predecessors, (33), 8 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-23 03:12:30,411 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 03:12:30,411 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 03:12:30,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 03:12:30,420 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 03:12:30,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 03:12:30,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 03:12:37,920 WARN L233 SmtUtils]: Spent 7.17s on a formula simplification. DAG size of input: 59 DAG size of output: 35 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-23 03:12:50,742 WARN L233 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 59 DAG size of output: 35 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-11-23 03:12:50,992 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 52) the Hoare annotation is: (let ((.cse5 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse6 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse0 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~x~0#1| 10)) (.cse2 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse4 (= (+ .cse5 .cse6) |ULTIMATE.start_main_~a~0#1|))) (or (and (forall ((|ULTIMATE.start_main_~r~0#1| Int)) (= .cse0 (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1))) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2 .cse3 .cse4 (= |ULTIMATE.start_main_~s~0#1| 1)) (and (= .cse0 (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ .cse5 |ULTIMATE.start_main_~b~0#1| .cse6) (+ |ULTIMATE.start_main_~a~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|))) .cse1 .cse2 .cse3 .cse4)))) [2022-11-23 03:12:50,993 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 03:12:50,993 INFO L902 garLoopResultBuilder]: At program point L58(lines 18 59) the Hoare annotation is: true [2022-11-23 03:12:50,993 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~x~0#1| 10) (<= 1 |ULTIMATE.start_main_~x~0#1|)) [2022-11-23 03:12:50,993 INFO L895 garLoopResultBuilder]: At program point L56(line 56) the Hoare annotation is: (let ((.cse0 (<= |ULTIMATE.start_main_~x~0#1| 10)) (.cse1 (<= 1 |ULTIMATE.start_main_~x~0#1|))) (or (and (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 (= |ULTIMATE.start_main_~q~0#1| 0) .cse1 (= |ULTIMATE.start_main_~s~0#1| 1)) (let ((.cse2 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ .cse2 |ULTIMATE.start_main_~b~0#1| .cse3) (+ |ULTIMATE.start_main_~a~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|))) .cse0 .cse1 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= (+ .cse2 .cse3) |ULTIMATE.start_main_~a~0#1|))))) [2022-11-23 03:12:50,994 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse5 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse6 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse0 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~x~0#1| 10)) (.cse2 (<= 1 |ULTIMATE.start_main_~x~0#1|)) (.cse3 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|)) (.cse4 (= (+ .cse5 .cse6) |ULTIMATE.start_main_~a~0#1|))) (or (and (forall ((|ULTIMATE.start_main_~r~0#1| Int)) (= .cse0 (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1))) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2 .cse3 .cse4 (= |ULTIMATE.start_main_~s~0#1| 1)) (and (= .cse0 (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ .cse5 |ULTIMATE.start_main_~b~0#1| .cse6) (+ |ULTIMATE.start_main_~a~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|))) .cse1 .cse2 .cse3 .cse4)))) [2022-11-23 03:12:50,994 INFO L899 garLoopResultBuilder]: For program point L38(lines 35 52) no Hoare annotation was computed. [2022-11-23 03:12:50,994 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~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_~x~0#1| 10) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2022-11-23 03:12:50,995 INFO L895 garLoopResultBuilder]: At program point L36-1(line 36) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~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_~x~0#1| 10) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2022-11-23 03:12:50,995 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-23 03:12:50,995 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 03:12:50,995 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-23 03:12:50,995 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-11-23 03:12:50,996 INFO L899 garLoopResultBuilder]: For program point L57(line 57) no Hoare annotation was computed. [2022-11-23 03:12:50,996 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| 10)) [2022-11-23 03:12:50,996 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_~x~0#1| 10)) [2022-11-23 03:12:50,996 INFO L895 garLoopResultBuilder]: At program point L55(line 55) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|)) (.cse1 (<= |ULTIMATE.start_main_~x~0#1| 10)) (.cse2 (<= 1 |ULTIMATE.start_main_~x~0#1|))) (or (and (forall ((|ULTIMATE.start_main_~r~0#1| Int)) (= .cse0 (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1))) (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) .cse1 .cse2 (= |ULTIMATE.start_main_~s~0#1| 1)) (let ((.cse3 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= .cse0 (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ .cse3 |ULTIMATE.start_main_~b~0#1| .cse4) (+ |ULTIMATE.start_main_~a~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|))) .cse1 .cse2 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= (+ .cse3 .cse4) |ULTIMATE.start_main_~a~0#1|))))) [2022-11-23 03:12:50,997 INFO L902 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-11-23 03:12:50,997 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-11-23 03:12:50,997 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 51) no Hoare annotation was computed. [2022-11-23 03:12:50,997 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 35 52) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~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_~x~0#1| 10) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2022-11-23 03:12:50,998 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~s~0#1|) (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~r~0#1|) 1)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ .cse0 |ULTIMATE.start_main_~b~0#1| .cse1) (+ |ULTIMATE.start_main_~a~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_~x~0#1| 10) (<= 1 |ULTIMATE.start_main_~x~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~a~0#1|))) [2022-11-23 03:12:50,998 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-11-23 03:12:50,998 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-11-23 03:12:50,998 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-11-23 03:12:50,998 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-11-23 03:12:50,998 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-11-23 03:12:50,999 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-11-23 03:12:50,999 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-11-23 03:12:50,999 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-11-23 03:12:50,999 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-11-23 03:12:50,999 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-11-23 03:12:51,002 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 03:12:51,005 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 03:12:51,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:12:51 BoogieIcfgContainer [2022-11-23 03:12:51,019 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 03:12:51,019 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 03:12:51,019 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 03:12:51,019 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 03:12:51,020 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:12:21" (3/4) ... [2022-11-23 03:12:51,023 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 03:12:51,030 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-11-23 03:12:51,030 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-23 03:12:51,033 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-23 03:12:51,034 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-23 03:12:51,034 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 03:12:51,034 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 03:12:51,068 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/witness.graphml [2022-11-23 03:12:51,068 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 03:12:51,069 INFO L158 Benchmark]: Toolchain (without parser) took 30331.75ms. Allocated memory was 155.2MB in the beginning and 207.6MB in the end (delta: 52.4MB). Free memory was 123.2MB in the beginning and 114.4MB in the end (delta: 8.7MB). Peak memory consumption was 63.0MB. Max. memory is 16.1GB. [2022-11-23 03:12:51,069 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 155.2MB. Free memory was 97.3MB in the beginning and 97.1MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 03:12:51,069 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.33ms. Allocated memory is still 155.2MB. Free memory was 123.2MB in the beginning and 112.8MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 03:12:51,070 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.81ms. Allocated memory is still 155.2MB. Free memory was 112.8MB in the beginning and 111.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:12:51,070 INFO L158 Benchmark]: Boogie Preprocessor took 47.83ms. Allocated memory is still 155.2MB. Free memory was 111.2MB in the beginning and 109.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:12:51,071 INFO L158 Benchmark]: RCFGBuilder took 334.70ms. Allocated memory is still 155.2MB. Free memory was 109.7MB in the beginning and 98.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 03:12:51,071 INFO L158 Benchmark]: TraceAbstraction took 29498.07ms. Allocated memory was 155.2MB in the beginning and 207.6MB in the end (delta: 52.4MB). Free memory was 97.7MB in the beginning and 117.6MB in the end (delta: -19.9MB). Peak memory consumption was 99.3MB. Max. memory is 16.1GB. [2022-11-23 03:12:51,071 INFO L158 Benchmark]: Witness Printer took 49.10ms. Allocated memory is still 207.6MB. Free memory was 117.6MB in the beginning and 114.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 03:12:51,073 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 155.2MB. Free memory was 97.3MB in the beginning and 97.1MB in the end (delta: 159.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.33ms. Allocated memory is still 155.2MB. Free memory was 123.2MB in the beginning and 112.8MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.81ms. Allocated memory is still 155.2MB. Free memory was 112.8MB in the beginning and 111.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 47.83ms. Allocated memory is still 155.2MB. Free memory was 111.2MB in the beginning and 109.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 334.70ms. Allocated memory is still 155.2MB. Free memory was 109.7MB in the beginning and 98.7MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 29498.07ms. Allocated memory was 155.2MB in the beginning and 207.6MB in the end (delta: 52.4MB). Free memory was 97.7MB in the beginning and 117.6MB in the end (delta: -19.9MB). Peak memory consumption was 99.3MB. Max. memory is 16.1GB. * Witness Printer took 49.10ms. Allocated memory is still 207.6MB. Free memory was 117.6MB in the beginning and 114.4MB 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, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 29.4s, OverallIterations: 9, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 20.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 190 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 157 mSDsluCounter, 1181 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 868 mSDsCounter, 164 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1309 IncrementalHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 164 mSolverCounterUnsat, 313 mSDtfsCounter, 1309 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 626 GetRequests, 527 SyntacticMatches, 3 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=8, InterpolantAutomatonStates: 69, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 26 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 62 PreInvPairs, 108 NumberOfFragments, 501 HoareAnnotationTreeSize, 62 FomulaSimplifications, 202 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 3264 FormulaSimplificationTreeSizeReductionInter, 20.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 390 NumberOfCodeBlocks, 390 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 606 ConstructedInterpolants, 2 QuantifiedInterpolants, 1925 SizeOfPredicates, 33 NumberOfNonLiveVariables, 959 ConjunctsInSsa, 176 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 618/684 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((p * s == q * r + 1 && 1 <= y) && r * y + b + p * x == a + s * y + q * x) && x <= 10) && 1 <= x) && r * y + p * x == a - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-23 03:12:51,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_840904f5-4f45-4817-a93a-310fb2bc3fec/bin/uautomizer-QkZJyEgLgS/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