./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro --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 9fd228108b00a337c799c923821cefd2f3f25ea1b43eb489705884efe2b6ca03 --- 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-8393723 [2022-11-18 18:48:35,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:48:35,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:48:35,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:48:35,743 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:48:35,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:48:35,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:48:35,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:48:35,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:48:35,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:48:35,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:48:35,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:48:35,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:48:35,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:48:35,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:48:35,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:48:35,759 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:48:35,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:48:35,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:48:35,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:48:35,771 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:48:35,777 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:48:35,778 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:48:35,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:48:35,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:48:35,789 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:48:35,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:48:35,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:48:35,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:48:35,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:48:35,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:48:35,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:48:35,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:48:35,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:48:35,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:48:35,801 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:48:35,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:48:35,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:48:35,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:48:35,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:48:35,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:48:35,806 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:48:35,848 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:48:35,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:48:35,853 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:48:35,853 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:48:35,854 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:48:35,854 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:48:35,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:48:35,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:48:35,855 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:48:35,856 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:48:35,857 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:48:35,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:48:35,857 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:48:35,857 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:48:35,857 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:48:35,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:48:35,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:48:35,858 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:48:35,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:48:35,858 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:48:35,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:48:35,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:48:35,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:48:35,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:48:35,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:48:35,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:48:35,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:48:35,860 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:48:35,860 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:48:35,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:48:35,861 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:48:35,861 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:48:35,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:48:35,862 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fd228108b00a337c799c923821cefd2f3f25ea1b43eb489705884efe2b6ca03 [2022-11-18 18:48:36,144 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:48:36,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:48:36,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:48:36,180 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:48:36,180 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:48:36,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i [2022-11-18 18:48:36,255 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/data/e1eac52e8/d2e382331aaf423dba072ad32bb12f95/FLAGd5b0b5197 [2022-11-18 18:48:36,986 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:48:36,998 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i [2022-11-18 18:48:37,028 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/data/e1eac52e8/d2e382331aaf423dba072ad32bb12f95/FLAGd5b0b5197 [2022-11-18 18:48:37,209 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/data/e1eac52e8/d2e382331aaf423dba072ad32bb12f95 [2022-11-18 18:48:37,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:48:37,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:48:37,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:48:37,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:48:37,227 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:48:37,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:48:37" (1/1) ... [2022-11-18 18:48:37,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e81115f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:37, skipping insertion in model container [2022-11-18 18:48:37,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:48:37" (1/1) ... [2022-11-18 18:48:37,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:48:37,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:48:37,882 WARN L234 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_7d147cd2-e325-4df9-878a-8797bb893a02/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[33021,33034] [2022-11-18 18:48:38,087 WARN L234 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_7d147cd2-e325-4df9-878a-8797bb893a02/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[49681,49694] [2022-11-18 18:48:38,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:48:38,114 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:48:38,151 WARN L234 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_7d147cd2-e325-4df9-878a-8797bb893a02/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[33021,33034] [2022-11-18 18:48:38,238 WARN L234 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_7d147cd2-e325-4df9-878a-8797bb893a02/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test5-1.i[49681,49694] [2022-11-18 18:48:38,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:48:38,280 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:48:38,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:38 WrapperNode [2022-11-18 18:48:38,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:48:38,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:48:38,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:48:38,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:48:38,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:38" (1/1) ... [2022-11-18 18:48:38,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:38" (1/1) ... [2022-11-18 18:48:38,406 INFO L138 Inliner]: procedures = 177, calls = 388, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1394 [2022-11-18 18:48:38,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:48:38,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:48:38,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:48:38,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:48:38,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:38" (1/1) ... [2022-11-18 18:48:38,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:38" (1/1) ... [2022-11-18 18:48:38,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:38" (1/1) ... [2022-11-18 18:48:38,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:38" (1/1) ... [2022-11-18 18:48:38,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:38" (1/1) ... [2022-11-18 18:48:38,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:38" (1/1) ... [2022-11-18 18:48:38,541 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:38" (1/1) ... [2022-11-18 18:48:38,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:38" (1/1) ... [2022-11-18 18:48:38,565 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:48:38,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:48:38,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:48:38,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:48:38,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:38" (1/1) ... [2022-11-18 18:48:38,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:48:38,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:38,620 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:48:38,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:48:38,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:48:38,691 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-18 18:48:38,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-18 18:48:38,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:48:38,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-18 18:48:38,691 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-18 18:48:38,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:48:38,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:48:38,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 18:48:38,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:48:38,694 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-18 18:48:38,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 18:48:38,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:48:38,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:48:38,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:48:38,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:48:39,022 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:48:39,023 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:48:40,877 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:48:40,885 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:48:40,886 INFO L300 CfgBuilder]: Removed 83 assume(true) statements. [2022-11-18 18:48:40,888 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:48:40 BoogieIcfgContainer [2022-11-18 18:48:40,889 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:48:40,891 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:48:40,891 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:48:40,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:48:40,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:48:37" (1/3) ... [2022-11-18 18:48:40,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c43213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:48:40, skipping insertion in model container [2022-11-18 18:48:40,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:48:38" (2/3) ... [2022-11-18 18:48:40,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21c43213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:48:40, skipping insertion in model container [2022-11-18 18:48:40,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:48:40" (3/3) ... [2022-11-18 18:48:40,904 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test5-1.i [2022-11-18 18:48:40,923 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:48:40,924 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 18:48:40,990 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:48:40,997 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;@28f6cddb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:48:40,997 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 18:48:41,003 INFO L276 IsEmpty]: Start isEmpty. Operand has 254 states, 238 states have (on average 1.7016806722689075) internal successors, (405), 245 states have internal predecessors, (405), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 18:48:41,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-18 18:48:41,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:41,011 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:41,012 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:41,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:41,017 INFO L85 PathProgramCache]: Analyzing trace with hash 678032416, now seen corresponding path program 1 times [2022-11-18 18:48:41,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:41,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731827549] [2022-11-18 18:48:41,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:41,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:41,177 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:48:41,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1700693959] [2022-11-18 18:48:41,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:41,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:41,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:41,186 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:41,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:48:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:41,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-18 18:48:41,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:41,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:41,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:48:41,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:41,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731827549] [2022-11-18 18:48:41,425 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:48:41,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700693959] [2022-11-18 18:48:41,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700693959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:41,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:41,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 18:48:41,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978789036] [2022-11-18 18:48:41,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:41,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 18:48:41,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:41,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 18:48:41,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:48:41,468 INFO L87 Difference]: Start difference. First operand has 254 states, 238 states have (on average 1.7016806722689075) internal successors, (405), 245 states have internal predecessors, (405), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-18 18:48:41,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:41,553 INFO L93 Difference]: Finished difference Result 506 states and 857 transitions. [2022-11-18 18:48:41,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 18:48:41,562 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-18 18:48:41,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:41,574 INFO L225 Difference]: With dead ends: 506 [2022-11-18 18:48:41,574 INFO L226 Difference]: Without dead ends: 250 [2022-11-18 18:48:41,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 18:48:41,583 INFO L413 NwaCegarLoop]: 335 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, 335 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 [2022-11-18 18:48:41,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:48:41,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-11-18 18:48:41,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2022-11-18 18:48:41,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 235 states have (on average 1.3148936170212766) internal successors, (309), 241 states have internal predecessors, (309), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 18:48:41,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 331 transitions. [2022-11-18 18:48:41,659 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 331 transitions. Word has length 8 [2022-11-18 18:48:41,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:41,659 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 331 transitions. [2022-11-18 18:48:41,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-11-18 18:48:41,660 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 331 transitions. [2022-11-18 18:48:41,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 18:48:41,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:41,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:41,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:41,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:41,869 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:41,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:41,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1368100487, now seen corresponding path program 1 times [2022-11-18 18:48:41,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:41,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185247676] [2022-11-18 18:48:41,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:41,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:41,913 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:48:41,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660029255] [2022-11-18 18:48:41,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:41,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:41,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:41,921 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:41,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:48:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:42,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 18:48:42,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:42,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:42,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:48:42,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:42,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185247676] [2022-11-18 18:48:42,214 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:48:42,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660029255] [2022-11-18 18:48:42,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660029255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:42,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:42,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:42,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556911439] [2022-11-18 18:48:42,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:42,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:42,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:42,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:42,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:42,218 INFO L87 Difference]: Start difference. First operand 250 states and 331 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2022-11-18 18:48:42,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:42,270 INFO L93 Difference]: Finished difference Result 565 states and 756 transitions. [2022-11-18 18:48:42,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:42,270 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-11-18 18:48:42,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:42,273 INFO L225 Difference]: With dead ends: 565 [2022-11-18 18:48:42,274 INFO L226 Difference]: Without dead ends: 487 [2022-11-18 18:48:42,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:42,276 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 294 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:42,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 660 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:48:42,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-11-18 18:48:42,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 251. [2022-11-18 18:48:42,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 236 states have (on average 1.3135593220338984) internal successors, (310), 242 states have internal predecessors, (310), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 18:48:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 332 transitions. [2022-11-18 18:48:42,311 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 332 transitions. Word has length 42 [2022-11-18 18:48:42,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:42,313 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 332 transitions. [2022-11-18 18:48:42,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2022-11-18 18:48:42,314 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 332 transitions. [2022-11-18 18:48:42,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-18 18:48:42,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:42,323 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:42,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:42,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-18 18:48:42,524 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:42,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:42,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1909784615, now seen corresponding path program 1 times [2022-11-18 18:48:42,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:42,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453510619] [2022-11-18 18:48:42,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:42,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:42,906 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:48:42,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1610452273] [2022-11-18 18:48:42,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:42,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:42,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:42,909 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:42,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:48:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:44,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 3071 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:48:44,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:44,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:44,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:48:44,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:44,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453510619] [2022-11-18 18:48:44,359 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:48:44,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610452273] [2022-11-18 18:48:44,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610452273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:44,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:44,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:44,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969415019] [2022-11-18 18:48:44,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:44,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:44,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:44,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:44,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:44,362 INFO L87 Difference]: Start difference. First operand 251 states and 332 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2022-11-18 18:48:44,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:44,450 INFO L93 Difference]: Finished difference Result 520 states and 692 transitions. [2022-11-18 18:48:44,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:44,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-18 18:48:44,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:44,453 INFO L225 Difference]: With dead ends: 520 [2022-11-18 18:48:44,453 INFO L226 Difference]: Without dead ends: 272 [2022-11-18 18:48:44,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:44,455 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 9 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:44,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 607 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:48:44,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2022-11-18 18:48:44,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 271. [2022-11-18 18:48:44,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 256 states have (on average 1.2890625) internal successors, (330), 262 states have internal predecessors, (330), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 18:48:44,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 352 transitions. [2022-11-18 18:48:44,468 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 352 transitions. Word has length 140 [2022-11-18 18:48:44,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:44,468 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 352 transitions. [2022-11-18 18:48:44,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2022-11-18 18:48:44,469 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 352 transitions. [2022-11-18 18:48:44,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-18 18:48:44,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:44,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:44,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:44,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:44,686 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:44,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:44,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1480126309, now seen corresponding path program 1 times [2022-11-18 18:48:44,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:44,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849980898] [2022-11-18 18:48:44,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:44,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:44,996 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:48:45,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1891442121] [2022-11-18 18:48:45,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:45,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:45,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:45,004 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:45,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:48:46,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:46,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 3073 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:48:46,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:46,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:46,467 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:48:46,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:46,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849980898] [2022-11-18 18:48:46,468 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:48:46,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1891442121] [2022-11-18 18:48:46,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1891442121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:46,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:46,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:46,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895231481] [2022-11-18 18:48:46,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:46,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:46,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:46,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:46,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:46,472 INFO L87 Difference]: Start difference. First operand 271 states and 352 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2022-11-18 18:48:46,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:46,573 INFO L93 Difference]: Finished difference Result 560 states and 732 transitions. [2022-11-18 18:48:46,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:46,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-18 18:48:46,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:46,578 INFO L225 Difference]: With dead ends: 560 [2022-11-18 18:48:46,583 INFO L226 Difference]: Without dead ends: 292 [2022-11-18 18:48:46,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:46,585 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 10 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:46,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 607 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:48:46,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-11-18 18:48:46,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 291. [2022-11-18 18:48:46,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 276 states have (on average 1.2681159420289856) internal successors, (350), 282 states have internal predecessors, (350), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 18:48:46,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 372 transitions. [2022-11-18 18:48:46,597 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 372 transitions. Word has length 140 [2022-11-18 18:48:46,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:46,598 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 372 transitions. [2022-11-18 18:48:46,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2022-11-18 18:48:46,598 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 372 transitions. [2022-11-18 18:48:46,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-18 18:48:46,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:46,600 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:46,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:46,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:46,820 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:46,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:46,820 INFO L85 PathProgramCache]: Analyzing trace with hash -4891625, now seen corresponding path program 1 times [2022-11-18 18:48:46,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:46,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392536475] [2022-11-18 18:48:46,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:46,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:47,149 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:48:47,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1531901829] [2022-11-18 18:48:47,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:47,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:47,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:47,152 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:47,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:48:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:48,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 3077 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:48:48,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:48,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:48:48,812 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:48:48,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:48,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392536475] [2022-11-18 18:48:48,813 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:48:48,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531901829] [2022-11-18 18:48:48,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531901829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:48,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:48,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:48:48,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55191266] [2022-11-18 18:48:48,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:48,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:48:48,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:48,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:48:48,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:48,816 INFO L87 Difference]: Start difference. First operand 291 states and 372 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2022-11-18 18:48:48,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:48,908 INFO L93 Difference]: Finished difference Result 389 states and 508 transitions. [2022-11-18 18:48:48,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:48:48,909 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-18 18:48:48,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:48,912 INFO L225 Difference]: With dead ends: 389 [2022-11-18 18:48:48,912 INFO L226 Difference]: Without dead ends: 312 [2022-11-18 18:48:48,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:48:48,914 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 9 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:48,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 607 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:48:48,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2022-11-18 18:48:48,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 311. [2022-11-18 18:48:48,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 296 states have (on average 1.25) internal successors, (370), 302 states have internal predecessors, (370), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 18:48:48,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 392 transitions. [2022-11-18 18:48:48,926 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 392 transitions. Word has length 140 [2022-11-18 18:48:48,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:48,927 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 392 transitions. [2022-11-18 18:48:48,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 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) [2022-11-18 18:48:48,928 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 392 transitions. [2022-11-18 18:48:48,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-18 18:48:48,929 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:48,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:48,951 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:49,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:49,152 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:49,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:49,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1989253081, now seen corresponding path program 1 times [2022-11-18 18:48:49,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:49,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891503890] [2022-11-18 18:48:49,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:49,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:49,374 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:48:49,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [420067961] [2022-11-18 18:48:49,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:49,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:49,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:49,377 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:49,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:48:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:51,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 3079 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:48:51,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:51,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:51,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:48:51,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:51,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891503890] [2022-11-18 18:48:51,111 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:48:51,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420067961] [2022-11-18 18:48:51,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420067961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:51,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:51,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:48:51,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744511061] [2022-11-18 18:48:51,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:51,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:48:51,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:51,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:48:51,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:48:51,115 INFO L87 Difference]: Start difference. First operand 311 states and 392 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2022-11-18 18:48:51,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:51,220 INFO L93 Difference]: Finished difference Result 611 states and 773 transitions. [2022-11-18 18:48:51,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:48:51,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-18 18:48:51,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:51,222 INFO L225 Difference]: With dead ends: 611 [2022-11-18 18:48:51,223 INFO L226 Difference]: Without dead ends: 303 [2022-11-18 18:48:51,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:48:51,224 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 295 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:51,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 635 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:48:51,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-11-18 18:48:51,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 297. [2022-11-18 18:48:51,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 282 states have (on average 1.2375886524822695) internal successors, (349), 288 states have internal predecessors, (349), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 18:48:51,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 371 transitions. [2022-11-18 18:48:51,236 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 371 transitions. Word has length 140 [2022-11-18 18:48:51,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:51,236 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 371 transitions. [2022-11-18 18:48:51,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2022-11-18 18:48:51,237 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 371 transitions. [2022-11-18 18:48:51,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-18 18:48:51,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:51,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:51,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:51,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:51,455 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:51,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:51,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1906468619, now seen corresponding path program 1 times [2022-11-18 18:48:51,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:51,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682414732] [2022-11-18 18:48:51,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:51,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:51,723 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:48:51,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [354568975] [2022-11-18 18:48:51,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:51,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:51,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:51,727 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:51,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 18:48:53,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:53,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 3065 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:48:53,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:53,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:48:53,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:48:53,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:53,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682414732] [2022-11-18 18:48:53,656 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:48:53,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354568975] [2022-11-18 18:48:53,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354568975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:53,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:53,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:48:53,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943077899] [2022-11-18 18:48:53,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:53,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:48:53,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:53,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:48:53,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:48:53,659 INFO L87 Difference]: Start difference. First operand 297 states and 371 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2022-11-18 18:48:53,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:53,757 INFO L93 Difference]: Finished difference Result 670 states and 837 transitions. [2022-11-18 18:48:53,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:48:53,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-18 18:48:53,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:53,760 INFO L225 Difference]: With dead ends: 670 [2022-11-18 18:48:53,760 INFO L226 Difference]: Without dead ends: 376 [2022-11-18 18:48:53,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:48:53,762 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 288 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:53,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 921 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:48:53,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-18 18:48:53,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 283. [2022-11-18 18:48:53,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 268 states have (on average 1.2238805970149254) internal successors, (328), 274 states have internal predecessors, (328), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 18:48:53,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 350 transitions. [2022-11-18 18:48:53,778 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 350 transitions. Word has length 140 [2022-11-18 18:48:53,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:53,778 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 350 transitions. [2022-11-18 18:48:53,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2022-11-18 18:48:53,779 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 350 transitions. [2022-11-18 18:48:53,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-18 18:48:53,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:53,782 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:53,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:53,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:53,998 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:53,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:53,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1296503321, now seen corresponding path program 1 times [2022-11-18 18:48:53,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:53,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543440116] [2022-11-18 18:48:53,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:53,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:54,281 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:48:54,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2113071249] [2022-11-18 18:48:54,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:54,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:54,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:54,286 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:54,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 18:48:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:56,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 3051 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:48:56,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:56,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:48:56,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:48:56,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:56,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543440116] [2022-11-18 18:48:56,423 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:48:56,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113071249] [2022-11-18 18:48:56,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113071249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:56,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:56,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:48:56,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825762708] [2022-11-18 18:48:56,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:56,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:48:56,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:56,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:48:56,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:48:56,426 INFO L87 Difference]: Start difference. First operand 283 states and 350 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2022-11-18 18:48:56,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:56,523 INFO L93 Difference]: Finished difference Result 371 states and 466 transitions. [2022-11-18 18:48:56,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:48:56,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-18 18:48:56,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:56,529 INFO L225 Difference]: With dead ends: 371 [2022-11-18 18:48:56,529 INFO L226 Difference]: Without dead ends: 274 [2022-11-18 18:48:56,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:48:56,530 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 88 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:56,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 801 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:48:56,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-11-18 18:48:56,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 269. [2022-11-18 18:48:56,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 254 states have (on average 1.2086614173228347) internal successors, (307), 260 states have internal predecessors, (307), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 18:48:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 329 transitions. [2022-11-18 18:48:56,544 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 329 transitions. Word has length 140 [2022-11-18 18:48:56,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:56,545 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 329 transitions. [2022-11-18 18:48:56,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2022-11-18 18:48:56,546 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 329 transitions. [2022-11-18 18:48:56,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-18 18:48:56,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:56,547 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:56,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:56,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:56,765 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:56,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:56,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1580490231, now seen corresponding path program 1 times [2022-11-18 18:48:56,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:56,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920700837] [2022-11-18 18:48:56,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:56,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:56,978 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:48:56,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1135238466] [2022-11-18 18:48:56,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:56,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:56,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:56,980 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:56,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 18:48:59,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:48:59,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 3035 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:48:59,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:48:59,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:48:59,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:48:59,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:48:59,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920700837] [2022-11-18 18:48:59,272 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:48:59,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135238466] [2022-11-18 18:48:59,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135238466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:48:59,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:48:59,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:48:59,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301568687] [2022-11-18 18:48:59,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:48:59,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:48:59,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:48:59,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:48:59,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:48:59,278 INFO L87 Difference]: Start difference. First operand 269 states and 329 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2022-11-18 18:48:59,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:48:59,344 INFO L93 Difference]: Finished difference Result 347 states and 425 transitions. [2022-11-18 18:48:59,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 18:48:59,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-18 18:48:59,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:48:59,347 INFO L225 Difference]: With dead ends: 347 [2022-11-18 18:48:59,347 INFO L226 Difference]: Without dead ends: 264 [2022-11-18 18:48:59,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:48:59,350 INFO L413 NwaCegarLoop]: 290 mSDtfsCounter, 63 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:48:59,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 795 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 18:48:59,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-18 18:48:59,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 260. [2022-11-18 18:48:59,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 245 states have (on average 1.1959183673469387) internal successors, (293), 251 states have internal predecessors, (293), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-18 18:48:59,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 315 transitions. [2022-11-18 18:48:59,363 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 315 transitions. Word has length 140 [2022-11-18 18:48:59,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:48:59,363 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 315 transitions. [2022-11-18 18:48:59,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 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) [2022-11-18 18:48:59,364 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 315 transitions. [2022-11-18 18:48:59,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-18 18:48:59,366 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:48:59,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:48:59,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 18:48:59,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:59,582 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:48:59,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:48:59,583 INFO L85 PathProgramCache]: Analyzing trace with hash 413654475, now seen corresponding path program 1 times [2022-11-18 18:48:59,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:48:59,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459069861] [2022-11-18 18:48:59,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:59,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:48:59,787 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:48:59,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554991741] [2022-11-18 18:48:59,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:48:59,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:48:59,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:48:59,789 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:48:59,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 18:49:02,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:02,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 3037 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 18:49:02,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:02,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:02,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:49:02,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:02,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:02,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459069861] [2022-11-18 18:49:02,546 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:49:02,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554991741] [2022-11-18 18:49:02,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554991741] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:49:02,546 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:49:02,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-18 18:49:02,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120899936] [2022-11-18 18:49:02,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:49:02,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:49:02,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:02,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:49:02,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:49:02,549 INFO L87 Difference]: Start difference. First operand 260 states and 315 transitions. Second operand has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 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) [2022-11-18 18:49:02,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:02,726 INFO L93 Difference]: Finished difference Result 1005 states and 1227 transitions. [2022-11-18 18:49:02,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 18:49:02,727 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-11-18 18:49:02,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:02,731 INFO L225 Difference]: With dead ends: 1005 [2022-11-18 18:49:02,731 INFO L226 Difference]: Without dead ends: 930 [2022-11-18 18:49:02,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-18 18:49:02,733 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 1022 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:02,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 1274 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:49:02,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2022-11-18 18:49:02,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 794. [2022-11-18 18:49:02,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 794 states, 761 states have (on average 1.1892247043363995) internal successors, (905), 767 states have internal predecessors, (905), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 25 states have call predecessors, (29), 29 states have call successors, (29) [2022-11-18 18:49:02,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 963 transitions. [2022-11-18 18:49:02,766 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 963 transitions. Word has length 140 [2022-11-18 18:49:02,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:02,767 INFO L495 AbstractCegarLoop]: Abstraction has 794 states and 963 transitions. [2022-11-18 18:49:02,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 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) [2022-11-18 18:49:02,767 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 963 transitions. [2022-11-18 18:49:02,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2022-11-18 18:49:02,776 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:02,777 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:02,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:02,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 18:49:02,990 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:02,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:02,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1488887653, now seen corresponding path program 2 times [2022-11-18 18:49:02,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:02,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026696158] [2022-11-18 18:49:02,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:02,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:03,957 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:49:03,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736848308] [2022-11-18 18:49:03,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:49:03,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:03,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:03,964 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:03,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 18:49:09,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 18:49:09,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:49:09,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 11749 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 18:49:09,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:10,278 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:10,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:49:11,009 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:11,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:11,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026696158] [2022-11-18 18:49:11,010 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:49:11,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736848308] [2022-11-18 18:49:11,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736848308] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:49:11,010 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 18:49:11,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-11-18 18:49:11,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111101059] [2022-11-18 18:49:11,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 18:49:11,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:49:11,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:11,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:49:11,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:49:11,014 INFO L87 Difference]: Start difference. First operand 794 states and 963 transitions. Second operand has 12 states, 12 states have (on average 69.0) internal successors, (828), 12 states have internal predecessors, (828), 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) [2022-11-18 18:49:11,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:11,580 INFO L93 Difference]: Finished difference Result 2277 states and 2781 transitions. [2022-11-18 18:49:11,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:49:11,581 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 69.0) internal successors, (828), 12 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 434 [2022-11-18 18:49:11,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:11,592 INFO L225 Difference]: With dead ends: 2277 [2022-11-18 18:49:11,593 INFO L226 Difference]: Without dead ends: 2202 [2022-11-18 18:49:11,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 866 GetRequests, 856 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:49:11,595 INFO L413 NwaCegarLoop]: 417 mSDtfsCounter, 3339 mSDsluCounter, 2468 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3429 SdHoareTripleChecker+Valid, 2885 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:11,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3429 Valid, 2885 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 18:49:11,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2022-11-18 18:49:11,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 1862. [2022-11-18 18:49:11,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1862 states, 1793 states have (on average 1.1873954266592304) internal successors, (2129), 1799 states have internal predecessors, (2129), 65 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 61 states have call predecessors, (65), 65 states have call successors, (65) [2022-11-18 18:49:11,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2259 transitions. [2022-11-18 18:49:11,764 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2259 transitions. Word has length 434 [2022-11-18 18:49:11,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:11,765 INFO L495 AbstractCegarLoop]: Abstraction has 1862 states and 2259 transitions. [2022-11-18 18:49:11,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 69.0) internal successors, (828), 12 states have internal predecessors, (828), 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) [2022-11-18 18:49:11,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2259 transitions. [2022-11-18 18:49:11,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2022-11-18 18:49:11,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:11,809 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:11,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:12,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 18:49:12,034 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:12,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:12,035 INFO L85 PathProgramCache]: Analyzing trace with hash -268896231, now seen corresponding path program 3 times [2022-11-18 18:49:12,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:12,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760735686] [2022-11-18 18:49:12,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:12,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:13,920 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:49:13,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1459446405] [2022-11-18 18:49:13,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 18:49:13,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:13,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:13,923 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:13,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 18:49:20,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 18:49:20,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:49:20,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 3037 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:49:20,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:25,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4420 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 4275 trivial. 0 not checked. [2022-11-18 18:49:25,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:49:25,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:25,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760735686] [2022-11-18 18:49:25,232 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:49:25,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459446405] [2022-11-18 18:49:25,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459446405] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:25,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:25,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:49:25,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145542206] [2022-11-18 18:49:25,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:25,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:49:25,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:25,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:49:25,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:49:25,236 INFO L87 Difference]: Start difference. First operand 1862 states and 2259 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2022-11-18 18:49:25,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:25,357 INFO L93 Difference]: Finished difference Result 3631 states and 4409 transitions. [2022-11-18 18:49:25,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:49:25,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1022 [2022-11-18 18:49:25,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:25,365 INFO L225 Difference]: With dead ends: 3631 [2022-11-18 18:49:25,365 INFO L226 Difference]: Without dead ends: 1912 [2022-11-18 18:49:25,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 1020 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:49:25,369 INFO L413 NwaCegarLoop]: 342 mSDtfsCounter, 113 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:25,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 622 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:49:25,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1912 states. [2022-11-18 18:49:25,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1912 to 1910. [2022-11-18 18:49:25,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1910 states, 1836 states have (on average 1.1857298474945535) internal successors, (2177), 1847 states have internal predecessors, (2177), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 62 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-18 18:49:25,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2317 transitions. [2022-11-18 18:49:25,439 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2317 transitions. Word has length 1022 [2022-11-18 18:49:25,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:25,439 INFO L495 AbstractCegarLoop]: Abstraction has 1910 states and 2317 transitions. [2022-11-18 18:49:25,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2022-11-18 18:49:25,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2317 transitions. [2022-11-18 18:49:25,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2022-11-18 18:49:25,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:25,455 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:25,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:25,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-18 18:49:25,682 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:25,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:25,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1288775889, now seen corresponding path program 1 times [2022-11-18 18:49:25,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:25,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079844740] [2022-11-18 18:49:25,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:25,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:27,616 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:49:27,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1247171634] [2022-11-18 18:49:27,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:27,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:27,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:27,621 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:27,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 18:49:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:41,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 28310 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:49:41,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:49:41,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4406 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 4081 trivial. 0 not checked. [2022-11-18 18:49:41,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:49:41,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:41,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079844740] [2022-11-18 18:49:41,896 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:49:41,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247171634] [2022-11-18 18:49:41,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247171634] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:41,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:41,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:49:41,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356548019] [2022-11-18 18:49:41,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:41,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:49:41,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:41,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:49:41,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:49:41,900 INFO L87 Difference]: Start difference. First operand 1910 states and 2317 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:49:42,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:42,045 INFO L93 Difference]: Finished difference Result 3762 states and 4568 transitions. [2022-11-18 18:49:42,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:49:42,048 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1037 [2022-11-18 18:49:42,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:42,061 INFO L225 Difference]: With dead ends: 3762 [2022-11-18 18:49:42,061 INFO L226 Difference]: Without dead ends: 1908 [2022-11-18 18:49:42,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1036 GetRequests, 1035 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:49:42,070 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 15 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:42,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 587 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:49:42,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2022-11-18 18:49:42,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1908. [2022-11-18 18:49:42,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1908 states, 1834 states have (on average 1.1853871319520175) internal successors, (2174), 1845 states have internal predecessors, (2174), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 62 states have call predecessors, (70), 70 states have call successors, (70) [2022-11-18 18:49:42,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1908 states to 1908 states and 2314 transitions. [2022-11-18 18:49:42,187 INFO L78 Accepts]: Start accepts. Automaton has 1908 states and 2314 transitions. Word has length 1037 [2022-11-18 18:49:42,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:42,188 INFO L495 AbstractCegarLoop]: Abstraction has 1908 states and 2314 transitions. [2022-11-18 18:49:42,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 18:49:42,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1908 states and 2314 transitions. [2022-11-18 18:49:42,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1053 [2022-11-18 18:49:42,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:42,219 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:42,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 18:49:42,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:42,434 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:42,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:42,435 INFO L85 PathProgramCache]: Analyzing trace with hash -623631152, now seen corresponding path program 1 times [2022-11-18 18:49:42,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:42,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774847331] [2022-11-18 18:49:42,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:42,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:44,514 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:49:44,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1933009879] [2022-11-18 18:49:44,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:44,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:49:44,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:44,516 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:49:44,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 18:49:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:00,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 27447 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:50:00,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:50:03,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4408 backedges. 1431 proven. 0 refuted. 0 times theorem prover too weak. 2977 trivial. 0 not checked. [2022-11-18 18:50:03,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:50:03,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:03,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774847331] [2022-11-18 18:50:03,533 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-18 18:50:03,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933009879] [2022-11-18 18:50:03,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933009879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:03,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:03,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:50:03,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838739816] [2022-11-18 18:50:03,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:03,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 18:50:03,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:03,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 18:50:03,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:50:03,537 INFO L87 Difference]: Start difference. First operand 1908 states and 2314 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:50:03,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:50:03,709 INFO L93 Difference]: Finished difference Result 4737 states and 5750 transitions. [2022-11-18 18:50:03,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 18:50:03,711 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1052 [2022-11-18 18:50:03,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:50:03,726 INFO L225 Difference]: With dead ends: 4737 [2022-11-18 18:50:03,726 INFO L226 Difference]: Without dead ends: 3317 [2022-11-18 18:50:03,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1051 GetRequests, 1050 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 18:50:03,731 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 127 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:50:03,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 734 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 18:50:03,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3317 states. [2022-11-18 18:50:03,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3317 to 3315. [2022-11-18 18:50:03,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3315 states, 3208 states have (on average 1.186720698254364) internal successors, (3807), 3219 states have internal predecessors, (3807), 103 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (103), 95 states have call predecessors, (103), 103 states have call successors, (103) [2022-11-18 18:50:03,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3315 states to 3315 states and 4013 transitions. [2022-11-18 18:50:03,888 INFO L78 Accepts]: Start accepts. Automaton has 3315 states and 4013 transitions. Word has length 1052 [2022-11-18 18:50:03,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:50:03,891 INFO L495 AbstractCegarLoop]: Abstraction has 3315 states and 4013 transitions. [2022-11-18 18:50:03,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 18:50:03,892 INFO L276 IsEmpty]: Start isEmpty. Operand 3315 states and 4013 transitions. [2022-11-18 18:50:03,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2022-11-18 18:50:03,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:50:03,911 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:04,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 18:50:04,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 18:50:04,126 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:50:04,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:04,127 INFO L85 PathProgramCache]: Analyzing trace with hash -682199730, now seen corresponding path program 1 times [2022-11-18 18:50:04,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:04,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996852175] [2022-11-18 18:50:04,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:04,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:06,377 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-18 18:50:06,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507465516] [2022-11-18 18:50:06,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:06,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:50:06,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:50:06,382 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:50:06,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7d147cd2-e325-4df9-878a-8797bb893a02/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process