./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX --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 43c551c05c986c34609f999e25a13e0dbb4f692e7b1d3b7f2939ec615c71d0d0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:09:02,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:09:02,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:09:02,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:09:02,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:09:02,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:09:02,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:09:02,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:09:02,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:09:02,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:09:02,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:09:02,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:09:02,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:09:02,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:09:02,096 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:09:02,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:09:02,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:09:02,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:09:02,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:09:02,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:09:02,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:09:02,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:09:02,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:09:02,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:09:02,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:09:02,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:09:02,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:09:02,123 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:09:02,123 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:09:02,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:09:02,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:09:02,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:09:02,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:09:02,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:09:02,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:09:02,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:09:02,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:09:02,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:09:02,132 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:09:02,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:09:02,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:09:02,135 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:09:02,163 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:09:02,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:09:02,166 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:09:02,166 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:09:02,168 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:09:02,168 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:09:02,169 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:09:02,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:09:02,169 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:09:02,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:09:02,171 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:09:02,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:09:02,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:09:02,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:09:02,172 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:09:02,172 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:09:02,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:09:02,172 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:09:02,173 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:09:02,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:09:02,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:09:02,174 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:09:02,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:09:02,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:09:02,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:09:02,175 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:09:02,175 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:09:02,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:09:02,176 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:09:02,177 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:09:02,178 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:09:02,178 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:09:02,178 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_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c551c05c986c34609f999e25a13e0dbb4f692e7b1d3b7f2939ec615c71d0d0 [2021-11-09 09:09:02,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:09:02,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:09:02,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:09:02,531 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:09:02,532 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:09:02,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i [2021-11-09 09:09:02,627 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/data/ce8634df8/3d8fafe447be4fc3b339c790a073d260/FLAG1c9b9df15 [2021-11-09 09:09:03,289 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:09:03,290 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i [2021-11-09 09:09:03,327 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/data/ce8634df8/3d8fafe447be4fc3b339c790a073d260/FLAG1c9b9df15 [2021-11-09 09:09:03,494 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/data/ce8634df8/3d8fafe447be4fc3b339c790a073d260 [2021-11-09 09:09:03,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:09:03,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:09:03,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:03,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:09:03,508 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:09:03,509 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:03" (1/1) ... [2021-11-09 09:09:03,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@357af2f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:03, skipping insertion in model container [2021-11-09 09:09:03,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:09:03" (1/1) ... [2021-11-09 09:09:03,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:09:03,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:09:04,151 WARN L228 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_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i[33022,33035] [2021-11-09 09:09:04,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:04,427 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:09:04,463 WARN L228 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_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test10-1.i[33022,33035] [2021-11-09 09:09:04,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:09:04,692 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:09:04,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04 WrapperNode [2021-11-09 09:09:04,694 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:09:04,695 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:09:04,695 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:09:04,696 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:09:04,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:09:04,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:09:04,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:09:04,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:09:04,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:04,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:05,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:05,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:05,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:09:05,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:09:05,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:09:05,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:09:05,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (1/1) ... [2021-11-09 09:09:05,041 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:09:05,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:05,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:09:05,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:09:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 09:09:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 09:09:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:09:05,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 09:09:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:09:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-09 09:09:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 09:09:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 09:09:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:09:05,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:09:05,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:09:07,397 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:09:07,398 INFO L299 CfgBuilder]: Removed 207 assume(true) statements. [2021-11-09 09:09:07,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:07 BoogieIcfgContainer [2021-11-09 09:09:07,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:09:07,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:09:07,406 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:09:07,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:09:07,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:09:03" (1/3) ... [2021-11-09 09:09:07,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114eed01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:09:07, skipping insertion in model container [2021-11-09 09:09:07,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:09:04" (2/3) ... [2021-11-09 09:09:07,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@114eed01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:09:07, skipping insertion in model container [2021-11-09 09:09:07,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:09:07" (3/3) ... [2021-11-09 09:09:07,413 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test10-1.i [2021-11-09 09:09:07,419 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:09:07,419 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-09 09:09:07,491 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:09:07,500 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 09:09:07,500 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-09 09:09:07,538 INFO L276 IsEmpty]: Start isEmpty. Operand has 470 states, 453 states have (on average 1.7461368653421634) internal successors, (791), 469 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:07,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-09 09:09:07,545 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:07,546 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:07,546 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 09:09:07,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:07,552 INFO L85 PathProgramCache]: Analyzing trace with hash -128377380, now seen corresponding path program 1 times [2021-11-09 09:09:07,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:07,563 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695409393] [2021-11-09 09:09:07,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:07,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:07,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:07,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:07,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:07,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695409393] [2021-11-09 09:09:07,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695409393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:07,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:07,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 09:09:07,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057644665] [2021-11-09 09:09:07,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 09:09:07,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:07,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:09:07,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:09:07,840 INFO L87 Difference]: Start difference. First operand has 470 states, 453 states have (on average 1.7461368653421634) internal successors, (791), 469 states have internal predecessors, (791), 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:07,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:07,904 INFO L93 Difference]: Finished difference Result 938 states and 1580 transitions. [2021-11-09 09:09:07,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:09:07,906 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-11-09 09:09:07,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:07,921 INFO L225 Difference]: With dead ends: 938 [2021-11-09 09:09:07,922 INFO L226 Difference]: Without dead ends: 465 [2021-11-09 09:09:07,927 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:09:07,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-11-09 09:09:07,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 465. [2021-11-09 09:09:07,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 449 states have (on average 1.354120267260579) internal successors, (608), 464 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:07,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 608 transitions. [2021-11-09 09:09:07,995 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 608 transitions. Word has length 9 [2021-11-09 09:09:07,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:07,996 INFO L470 AbstractCegarLoop]: Abstraction has 465 states and 608 transitions. [2021-11-09 09:09:07,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:07,997 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 608 transitions. [2021-11-09 09:09:07,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-09 09:09:08,000 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:08,000 INFO L513 BasicCegarLoop]: 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] [2021-11-09 09:09:08,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:09:08,001 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 09:09:08,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:08,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1568739198, now seen corresponding path program 1 times [2021-11-09 09:09:08,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:08,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880173763] [2021-11-09 09:09:08,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:08,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:08,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:08,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:08,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880173763] [2021-11-09 09:09:08,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880173763] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:08,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:08,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:09:08,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430357702] [2021-11-09 09:09:08,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:09:08,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:08,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:09:08,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:08,157 INFO L87 Difference]: Start difference. First operand 465 states and 608 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:08,936 INFO L93 Difference]: Finished difference Result 831 states and 1087 transitions. [2021-11-09 09:09:08,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:09:08,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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 44 [2021-11-09 09:09:08,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:08,942 INFO L225 Difference]: With dead ends: 831 [2021-11-09 09:09:08,942 INFO L226 Difference]: Without dead ends: 540 [2021-11-09 09:09:08,943 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:08,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2021-11-09 09:09:08,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 467. [2021-11-09 09:09:08,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 451 states have (on average 1.352549889135255) internal successors, (610), 466 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 610 transitions. [2021-11-09 09:09:08,985 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 610 transitions. Word has length 44 [2021-11-09 09:09:08,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:08,986 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 610 transitions. [2021-11-09 09:09:08,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:08,986 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 610 transitions. [2021-11-09 09:09:08,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-09 09:09:08,992 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:08,992 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:08,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:09:08,993 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 09:09:08,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:08,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1325558428, now seen corresponding path program 1 times [2021-11-09 09:09:08,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:08,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327245755] [2021-11-09 09:09:08,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:08,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:09,026 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:09:09,027 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [711934528] [2021-11-09 09:09:09,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:09,027 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:09,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:09,029 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:09,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 09:09:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:09,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:09:09,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:09,581 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:09,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:09,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327245755] [2021-11-09 09:09:09,582 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:09:09,582 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711934528] [2021-11-09 09:09:09,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711934528] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:09,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:09,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:09,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628852067] [2021-11-09 09:09:09,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:09,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:09,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:09,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:09,586 INFO L87 Difference]: Start difference. First operand 467 states and 610 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:09,686 INFO L93 Difference]: Finished difference Result 951 states and 1247 transitions. [2021-11-09 09:09:09,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:09,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 97 [2021-11-09 09:09:09,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:09,690 INFO L225 Difference]: With dead ends: 951 [2021-11-09 09:09:09,690 INFO L226 Difference]: Without dead ends: 488 [2021-11-09 09:09:09,693 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:09,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2021-11-09 09:09:09,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 487. [2021-11-09 09:09:09,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 471 states have (on average 1.3375796178343948) internal successors, (630), 486 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 630 transitions. [2021-11-09 09:09:09,709 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 630 transitions. Word has length 97 [2021-11-09 09:09:09,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:09,710 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 630 transitions. [2021-11-09 09:09:09,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:09,711 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 630 transitions. [2021-11-09 09:09:09,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-09 09:09:09,718 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:09,718 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:09,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:09,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:09,947 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 09:09:09,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:09,948 INFO L85 PathProgramCache]: Analyzing trace with hash 948433376, now seen corresponding path program 1 times [2021-11-09 09:09:09,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:09,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615180053] [2021-11-09 09:09:09,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:09,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:09,999 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:09:09,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84420597] [2021-11-09 09:09:09,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:09,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:10,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:10,007 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:10,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 09:09:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:10,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:09:10,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:10,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:09:10,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:10,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615180053] [2021-11-09 09:09:10,579 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:09:10,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84420597] [2021-11-09 09:09:10,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84420597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:10,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:10,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:10,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882343053] [2021-11-09 09:09:10,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:10,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:10,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:10,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:10,582 INFO L87 Difference]: Start difference. First operand 487 states and 630 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:10,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:10,684 INFO L93 Difference]: Finished difference Result 787 states and 1024 transitions. [2021-11-09 09:09:10,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:10,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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 97 [2021-11-09 09:09:10,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:10,689 INFO L225 Difference]: With dead ends: 787 [2021-11-09 09:09:10,690 INFO L226 Difference]: Without dead ends: 508 [2021-11-09 09:09:10,691 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:10,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-11-09 09:09:10,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 507. [2021-11-09 09:09:10,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 491 states have (on average 1.3238289205702647) internal successors, (650), 506 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:10,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 650 transitions. [2021-11-09 09:09:10,709 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 650 transitions. Word has length 97 [2021-11-09 09:09:10,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:10,710 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 650 transitions. [2021-11-09 09:09:10,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:10,711 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 650 transitions. [2021-11-09 09:09:10,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-09 09:09:10,713 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:10,713 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:10,753 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:10,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:10,927 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 09:09:10,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:10,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1352389214, now seen corresponding path program 1 times [2021-11-09 09:09:10,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:10,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903290889] [2021-11-09 09:09:10,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:10,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:10,967 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:09:10,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [519673839] [2021-11-09 09:09:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:10,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:10,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:10,969 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:11,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 09:09:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:11,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:09:11,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:11,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:11,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:11,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903290889] [2021-11-09 09:09:11,581 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:09:11,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519673839] [2021-11-09 09:09:11,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519673839] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:11,582 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:11,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:09:11,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905412601] [2021-11-09 09:09:11,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:09:11,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:11,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:09:11,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:11,597 INFO L87 Difference]: Start difference. First operand 507 states and 650 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:11,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:11,705 INFO L93 Difference]: Finished difference Result 1086 states and 1400 transitions. [2021-11-09 09:09:11,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:09:11,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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 97 [2021-11-09 09:09:11,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:11,717 INFO L225 Difference]: With dead ends: 1086 [2021-11-09 09:09:11,717 INFO L226 Difference]: Without dead ends: 583 [2021-11-09 09:09:11,718 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:11,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2021-11-09 09:09:11,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 493. [2021-11-09 09:09:11,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 493 states, 477 states have (on average 1.3186582809224319) internal successors, (629), 492 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:11,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 493 states to 493 states and 629 transitions. [2021-11-09 09:09:11,739 INFO L78 Accepts]: Start accepts. Automaton has 493 states and 629 transitions. Word has length 97 [2021-11-09 09:09:11,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:11,739 INFO L470 AbstractCegarLoop]: Abstraction has 493 states and 629 transitions. [2021-11-09 09:09:11,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:11,740 INFO L276 IsEmpty]: Start isEmpty. Operand 493 states and 629 transitions. [2021-11-09 09:09:11,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-09 09:09:11,741 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:11,741 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:11,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:11,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:11,959 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 09:09:11,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:11,960 INFO L85 PathProgramCache]: Analyzing trace with hash 881478960, now seen corresponding path program 1 times [2021-11-09 09:09:11,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:11,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003668370] [2021-11-09 09:09:11,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:11,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:11,984 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:09:11,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942546967] [2021-11-09 09:09:11,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:11,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:11,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:11,986 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:11,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 09:09:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:12,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:09:12,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:12,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:09:12,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:12,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003668370] [2021-11-09 09:09:12,577 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:09:12,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942546967] [2021-11-09 09:09:12,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942546967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:12,577 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:12,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:09:12,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807120005] [2021-11-09 09:09:12,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:09:12,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:12,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:09:12,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:12,580 INFO L87 Difference]: Start difference. First operand 493 states and 629 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:12,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:12,678 INFO L93 Difference]: Finished difference Result 761 states and 972 transitions. [2021-11-09 09:09:12,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:09:12,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 97 [2021-11-09 09:09:12,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:12,682 INFO L225 Difference]: With dead ends: 761 [2021-11-09 09:09:12,682 INFO L226 Difference]: Without dead ends: 480 [2021-11-09 09:09:12,684 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:12,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2021-11-09 09:09:12,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 479. [2021-11-09 09:09:12,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 463 states have (on average 1.3131749460043196) internal successors, (608), 478 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:12,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 608 transitions. [2021-11-09 09:09:12,700 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 608 transitions. Word has length 97 [2021-11-09 09:09:12,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:12,702 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 608 transitions. [2021-11-09 09:09:12,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:12,703 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 608 transitions. [2021-11-09 09:09:12,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-09 09:09:12,704 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:12,705 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:12,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:12,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-09 09:09:12,931 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 09:09:12,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:12,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1427704734, now seen corresponding path program 1 times [2021-11-09 09:09:12,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:12,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605128230] [2021-11-09 09:09:12,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:12,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:12,953 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:09:12,954 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1388945882] [2021-11-09 09:09:12,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:12,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:12,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:12,955 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:12,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 09:09:13,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:13,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:09:13,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:13,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:13,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:13,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605128230] [2021-11-09 09:09:13,665 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:09:13,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388945882] [2021-11-09 09:09:13,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388945882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:13,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:13,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:13,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44395070] [2021-11-09 09:09:13,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:13,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:13,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:13,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:13,668 INFO L87 Difference]: Start difference. First operand 479 states and 608 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:13,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:13,757 INFO L93 Difference]: Finished difference Result 1231 states and 1562 transitions. [2021-11-09 09:09:13,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:13,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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 97 [2021-11-09 09:09:13,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:13,763 INFO L225 Difference]: With dead ends: 1231 [2021-11-09 09:09:13,763 INFO L226 Difference]: Without dead ends: 756 [2021-11-09 09:09:13,764 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:13,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2021-11-09 09:09:13,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 721. [2021-11-09 09:09:13,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 705 states have (on average 1.3191489361702127) internal successors, (930), 720 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:13,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 930 transitions. [2021-11-09 09:09:13,792 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 930 transitions. Word has length 97 [2021-11-09 09:09:13,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:13,792 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 930 transitions. [2021-11-09 09:09:13,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:13,793 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 930 transitions. [2021-11-09 09:09:13,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-09 09:09:13,794 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:13,795 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:13,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:14,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:14,015 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 09:09:14,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:14,015 INFO L85 PathProgramCache]: Analyzing trace with hash -371205377, now seen corresponding path program 1 times [2021-11-09 09:09:14,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:14,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908338851] [2021-11-09 09:09:14,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:14,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:14,037 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:09:14,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [605354974] [2021-11-09 09:09:14,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:14,037 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:14,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:14,039 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:14,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 09:09:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:14,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:09:14,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:14,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-09 09:09:14,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 39 [2021-11-09 09:09:14,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:14,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:14,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908338851] [2021-11-09 09:09:14,775 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:09:14,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605354974] [2021-11-09 09:09:14,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605354974] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:14,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:14,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:09:14,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774757621] [2021-11-09 09:09:14,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:09:14,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:14,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:09:14,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:14,778 INFO L87 Difference]: Start difference. First operand 721 states and 930 transitions. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:15,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:15,804 INFO L93 Difference]: Finished difference Result 1354 states and 1745 transitions. [2021-11-09 09:09:15,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:09:15,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 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 104 [2021-11-09 09:09:15,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:15,809 INFO L225 Difference]: With dead ends: 1354 [2021-11-09 09:09:15,809 INFO L226 Difference]: Without dead ends: 723 [2021-11-09 09:09:15,810 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:09:15,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2021-11-09 09:09:15,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 721. [2021-11-09 09:09:15,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 705 states have (on average 1.3177304964539007) internal successors, (929), 720 states have internal predecessors, (929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:15,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 929 transitions. [2021-11-09 09:09:15,839 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 929 transitions. Word has length 104 [2021-11-09 09:09:15,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:15,839 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 929 transitions. [2021-11-09 09:09:15,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:15,839 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 929 transitions. [2021-11-09 09:09:15,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-09 09:09:15,842 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:15,842 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:15,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:16,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:16,067 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 09:09:16,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:16,068 INFO L85 PathProgramCache]: Analyzing trace with hash -560944154, now seen corresponding path program 1 times [2021-11-09 09:09:16,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:16,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077827939] [2021-11-09 09:09:16,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:16,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:16,105 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:09:16,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483733187] [2021-11-09 09:09:16,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:16,105 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:16,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:16,117 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:16,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-09 09:09:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:16,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:09:16,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:16,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:16,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:16,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077827939] [2021-11-09 09:09:16,901 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:09:16,901 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483733187] [2021-11-09 09:09:16,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483733187] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:16,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:16,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:16,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900542583] [2021-11-09 09:09:16,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:16,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:16,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:16,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:16,903 INFO L87 Difference]: Start difference. First operand 721 states and 929 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:16,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:16,995 INFO L93 Difference]: Finished difference Result 1466 states and 1899 transitions. [2021-11-09 09:09:16,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:16,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 151 [2021-11-09 09:09:16,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:17,000 INFO L225 Difference]: With dead ends: 1466 [2021-11-09 09:09:17,000 INFO L226 Difference]: Without dead ends: 763 [2021-11-09 09:09:17,002 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:17,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2021-11-09 09:09:17,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 761. [2021-11-09 09:09:17,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 761 states, 745 states have (on average 1.3006711409395972) internal successors, (969), 760 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:17,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 969 transitions. [2021-11-09 09:09:17,031 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 969 transitions. Word has length 151 [2021-11-09 09:09:17,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:17,032 INFO L470 AbstractCegarLoop]: Abstraction has 761 states and 969 transitions. [2021-11-09 09:09:17,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:17,032 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 969 transitions. [2021-11-09 09:09:17,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-09 09:09:17,035 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:17,035 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:17,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:17,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:17,251 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 09:09:17,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:17,252 INFO L85 PathProgramCache]: Analyzing trace with hash 145652452, now seen corresponding path program 1 times [2021-11-09 09:09:17,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:17,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582337352] [2021-11-09 09:09:17,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:17,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:17,275 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:09:17,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1281749857] [2021-11-09 09:09:17,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:17,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:17,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:17,277 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:17,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-09 09:09:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:17,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:09:17,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:18,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:18,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:18,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582337352] [2021-11-09 09:09:18,108 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:09:18,108 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281749857] [2021-11-09 09:09:18,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281749857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:18,109 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:18,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:09:18,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274251254] [2021-11-09 09:09:18,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:09:18,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:18,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:09:18,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:18,112 INFO L87 Difference]: Start difference. First operand 761 states and 969 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:18,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:18,203 INFO L93 Difference]: Finished difference Result 1460 states and 1864 transitions. [2021-11-09 09:09:18,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:09:18,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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 151 [2021-11-09 09:09:18,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:18,209 INFO L225 Difference]: With dead ends: 1460 [2021-11-09 09:09:18,209 INFO L226 Difference]: Without dead ends: 735 [2021-11-09 09:09:18,211 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:18,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-11-09 09:09:18,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 733. [2021-11-09 09:09:18,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 717 states have (on average 1.292887029288703) internal successors, (927), 732 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:18,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 927 transitions. [2021-11-09 09:09:18,238 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 927 transitions. Word has length 151 [2021-11-09 09:09:18,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:18,238 INFO L470 AbstractCegarLoop]: Abstraction has 733 states and 927 transitions. [2021-11-09 09:09:18,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:18,239 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 927 transitions. [2021-11-09 09:09:18,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-09 09:09:18,241 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:18,241 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:18,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-11-09 09:09:18,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-09 09:09:18,458 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 09:09:18,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:18,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1850791156, now seen corresponding path program 1 times [2021-11-09 09:09:18,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:18,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511144236] [2021-11-09 09:09:18,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:18,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:18,481 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:09:18,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848092947] [2021-11-09 09:09:18,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:18,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:18,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:18,483 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:18,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-09 09:09:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:18,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:09:18,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:19,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:19,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:19,361 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511144236] [2021-11-09 09:09:19,362 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:09:19,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848092947] [2021-11-09 09:09:19,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848092947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:19,362 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:19,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:09:19,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066533992] [2021-11-09 09:09:19,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:09:19,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:19,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:09:19,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:19,373 INFO L87 Difference]: Start difference. First operand 733 states and 927 transitions. Second operand has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:19,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:19,522 INFO L93 Difference]: Finished difference Result 2155 states and 2732 transitions. [2021-11-09 09:09:19,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 09:09:19,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 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 151 [2021-11-09 09:09:19,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:19,531 INFO L225 Difference]: With dead ends: 2155 [2021-11-09 09:09:19,531 INFO L226 Difference]: Without dead ends: 1460 [2021-11-09 09:09:19,536 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:19,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-11-09 09:09:19,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 779. [2021-11-09 09:09:19,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 763 states have (on average 1.2804718217562254) internal successors, (977), 778 states have internal predecessors, (977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:19,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 977 transitions. [2021-11-09 09:09:19,574 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 977 transitions. Word has length 151 [2021-11-09 09:09:19,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:19,574 INFO L470 AbstractCegarLoop]: Abstraction has 779 states and 977 transitions. [2021-11-09 09:09:19,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.2) internal successors, (151), 5 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:19,575 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 977 transitions. [2021-11-09 09:09:19,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-09 09:09:19,577 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:19,577 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:19,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:19,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-09 09:09:19,803 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 09:09:19,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:19,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1918499578, now seen corresponding path program 1 times [2021-11-09 09:09:19,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:19,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241553005] [2021-11-09 09:09:19,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:19,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:19,835 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:09:19,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [962550458] [2021-11-09 09:09:19,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:19,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:19,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:19,837 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:19,865 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-09 09:09:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:20,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 09:09:20,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:20,680 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:20,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:20,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241553005] [2021-11-09 09:09:20,681 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:09:20,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962550458] [2021-11-09 09:09:20,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962550458] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:20,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:20,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:09:20,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049133884] [2021-11-09 09:09:20,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:09:20,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:20,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:09:20,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:20,683 INFO L87 Difference]: Start difference. First operand 779 states and 977 transitions. Second operand has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:20,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:20,763 INFO L93 Difference]: Finished difference Result 1467 states and 1851 transitions. [2021-11-09 09:09:20,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:09:20,764 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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 151 [2021-11-09 09:09:20,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:20,768 INFO L225 Difference]: With dead ends: 1467 [2021-11-09 09:09:20,768 INFO L226 Difference]: Without dead ends: 715 [2021-11-09 09:09:20,770 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:20,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2021-11-09 09:09:20,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2021-11-09 09:09:20,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 699 states have (on average 1.2861230329041489) internal successors, (899), 714 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:20,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 899 transitions. [2021-11-09 09:09:20,825 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 899 transitions. Word has length 151 [2021-11-09 09:09:20,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:20,826 INFO L470 AbstractCegarLoop]: Abstraction has 715 states and 899 transitions. [2021-11-09 09:09:20,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:20,826 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 899 transitions. [2021-11-09 09:09:20,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-09 09:09:20,828 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:20,829 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:20,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:21,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-09 09:09:21,055 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 09:09:21,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:21,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1737579534, now seen corresponding path program 1 times [2021-11-09 09:09:21,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:21,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139745794] [2021-11-09 09:09:21,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:21,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:21,084 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:09:21,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207389350] [2021-11-09 09:09:21,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:21,090 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:21,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:21,091 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:21,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-09 09:09:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:21,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:09:21,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:22,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:22,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:22,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139745794] [2021-11-09 09:09:22,137 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:09:22,138 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207389350] [2021-11-09 09:09:22,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207389350] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:22,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:22,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:22,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286309220] [2021-11-09 09:09:22,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:22,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:22,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:22,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:22,140 INFO L87 Difference]: Start difference. First operand 715 states and 899 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:22,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:22,246 INFO L93 Difference]: Finished difference Result 1699 states and 2167 transitions. [2021-11-09 09:09:22,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:22,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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 151 [2021-11-09 09:09:22,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:22,253 INFO L225 Difference]: With dead ends: 1699 [2021-11-09 09:09:22,253 INFO L226 Difference]: Without dead ends: 1033 [2021-11-09 09:09:22,255 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:22,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2021-11-09 09:09:22,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 876. [2021-11-09 09:09:22,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 860 states have (on average 1.3093023255813954) internal successors, (1126), 875 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:22,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1126 transitions. [2021-11-09 09:09:22,297 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1126 transitions. Word has length 151 [2021-11-09 09:09:22,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:22,297 INFO L470 AbstractCegarLoop]: Abstraction has 876 states and 1126 transitions. [2021-11-09 09:09:22,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:22,298 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1126 transitions. [2021-11-09 09:09:22,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-09 09:09:22,300 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:22,300 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:22,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:22,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-09 09:09:22,515 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 09:09:22,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:22,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1603750718, now seen corresponding path program 1 times [2021-11-09 09:09:22,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:22,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874378253] [2021-11-09 09:09:22,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:22,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:22,546 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:09:22,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685409164] [2021-11-09 09:09:22,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:22,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:22,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:22,548 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:22,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-09 09:09:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:23,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:09:23,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:23,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:23,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:23,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874378253] [2021-11-09 09:09:23,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:09:23,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685409164] [2021-11-09 09:09:23,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685409164] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:23,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:23,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:09:23,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450614806] [2021-11-09 09:09:23,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:09:23,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:23,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:09:23,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:23,647 INFO L87 Difference]: Start difference. First operand 876 states and 1126 transitions. Second operand has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:24,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:24,451 INFO L93 Difference]: Finished difference Result 1453 states and 1865 transitions. [2021-11-09 09:09:24,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:09:24,452 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 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 158 [2021-11-09 09:09:24,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:24,456 INFO L225 Difference]: With dead ends: 1453 [2021-11-09 09:09:24,457 INFO L226 Difference]: Without dead ends: 704 [2021-11-09 09:09:24,458 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:09:24,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-11-09 09:09:24,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 704. [2021-11-09 09:09:24,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 688 states have (on average 1.2805232558139534) internal successors, (881), 703 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:24,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 881 transitions. [2021-11-09 09:09:24,490 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 881 transitions. Word has length 158 [2021-11-09 09:09:24,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:24,491 INFO L470 AbstractCegarLoop]: Abstraction has 704 states and 881 transitions. [2021-11-09 09:09:24,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.5) internal successors, (158), 4 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:24,492 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 881 transitions. [2021-11-09 09:09:24,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-09 09:09:24,494 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:24,494 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:24,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:24,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-09 09:09:24,711 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 09:09:24,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:24,712 INFO L85 PathProgramCache]: Analyzing trace with hash -881822645, now seen corresponding path program 1 times [2021-11-09 09:09:24,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:24,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737561565] [2021-11-09 09:09:24,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:24,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:24,735 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:09:24,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1558183066] [2021-11-09 09:09:24,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:24,735 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:24,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:24,737 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:24,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-09 09:09:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:25,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:09:25,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:26,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:09:26,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:26,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737561565] [2021-11-09 09:09:26,192 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:09:26,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1558183066] [2021-11-09 09:09:26,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1558183066] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:26,193 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:26,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:26,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088322771] [2021-11-09 09:09:26,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:26,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:26,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:26,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:26,195 INFO L87 Difference]: Start difference. First operand 704 states and 881 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:26,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:26,252 INFO L93 Difference]: Finished difference Result 1364 states and 1718 transitions. [2021-11-09 09:09:26,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:26,254 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 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 165 [2021-11-09 09:09:26,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:26,259 INFO L225 Difference]: With dead ends: 1364 [2021-11-09 09:09:26,259 INFO L226 Difference]: Without dead ends: 706 [2021-11-09 09:09:26,261 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:26,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-11-09 09:09:26,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2021-11-09 09:09:26,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 690 states have (on average 1.2797101449275363) internal successors, (883), 705 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:26,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 883 transitions. [2021-11-09 09:09:26,292 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 883 transitions. Word has length 165 [2021-11-09 09:09:26,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:26,293 INFO L470 AbstractCegarLoop]: Abstraction has 706 states and 883 transitions. [2021-11-09 09:09:26,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:26,293 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 883 transitions. [2021-11-09 09:09:26,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-09 09:09:26,296 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:26,296 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:26,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:26,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-09 09:09:26,511 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 09:09:26,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:26,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1687246210, now seen corresponding path program 1 times [2021-11-09 09:09:26,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:26,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429448129] [2021-11-09 09:09:26,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:26,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:26,555 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:09:26,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208555816] [2021-11-09 09:09:26,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:26,556 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:26,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:26,559 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:26,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-09 09:09:28,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:28,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:09:28,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:28,487 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:09:28,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:28,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429448129] [2021-11-09 09:09:28,487 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:09:28,487 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208555816] [2021-11-09 09:09:28,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208555816] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:09:28,488 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:09:28,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-09 09:09:28,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014161931] [2021-11-09 09:09:28,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:09:28,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:28,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:09:28,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:28,489 INFO L87 Difference]: Start difference. First operand 706 states and 883 transitions. Second operand has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:28,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:28,584 INFO L93 Difference]: Finished difference Result 1367 states and 1721 transitions. [2021-11-09 09:09:28,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:09:28,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 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 167 [2021-11-09 09:09:28,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:28,590 INFO L225 Difference]: With dead ends: 1367 [2021-11-09 09:09:28,590 INFO L226 Difference]: Without dead ends: 708 [2021-11-09 09:09:28,592 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:28,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2021-11-09 09:09:28,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 708. [2021-11-09 09:09:28,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 692 states have (on average 1.2789017341040463) internal successors, (885), 707 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:28,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 885 transitions. [2021-11-09 09:09:28,622 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 885 transitions. Word has length 167 [2021-11-09 09:09:28,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:28,623 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 885 transitions. [2021-11-09 09:09:28,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 41.75) internal successors, (167), 4 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:28,624 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 885 transitions. [2021-11-09 09:09:28,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-11-09 09:09:28,626 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:28,626 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:28,673 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:28,847 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:28,847 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 09:09:28,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:28,848 INFO L85 PathProgramCache]: Analyzing trace with hash 41798635, now seen corresponding path program 2 times [2021-11-09 09:09:28,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:28,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418890228] [2021-11-09 09:09:28,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:28,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:28,874 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:09:28,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1302347216] [2021-11-09 09:09:28,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:09:28,874 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:28,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:28,875 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:28,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-09 09:09:30,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:09:30,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:09:30,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:09:30,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-09 09:09:31,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:31,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418890228] [2021-11-09 09:09:31,187 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:09:31,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302347216] [2021-11-09 09:09:31,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302347216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:09:31,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:09:31,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 09:09:31,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490942866] [2021-11-09 09:09:31,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 09:09:31,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:31,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 09:09:31,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:31,189 INFO L87 Difference]: Start difference. First operand 708 states and 885 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:31,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:31,271 INFO L93 Difference]: Finished difference Result 1375 states and 1730 transitions. [2021-11-09 09:09:31,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 09:09:31,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 169 [2021-11-09 09:09:31,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:31,277 INFO L225 Difference]: With dead ends: 1375 [2021-11-09 09:09:31,277 INFO L226 Difference]: Without dead ends: 710 [2021-11-09 09:09:31,279 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 09:09:31,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2021-11-09 09:09:31,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 710. [2021-11-09 09:09:31,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 694 states have (on average 1.2780979827089338) internal successors, (887), 709 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:31,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 887 transitions. [2021-11-09 09:09:31,306 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 887 transitions. Word has length 169 [2021-11-09 09:09:31,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:31,307 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 887 transitions. [2021-11-09 09:09:31,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:31,307 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 887 transitions. [2021-11-09 09:09:31,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-09 09:09:31,310 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:31,310 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:31,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:31,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-09 09:09:31,535 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 09:09:31,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:31,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1611045762, now seen corresponding path program 1 times [2021-11-09 09:09:31,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:31,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347998263] [2021-11-09 09:09:31,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:31,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:31,556 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:09:31,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1884115816] [2021-11-09 09:09:31,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:31,557 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:31,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:31,561 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:31,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-09 09:09:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:09:32,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-09 09:09:32,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:33,215 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-09 09:09:33,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:33,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347998263] [2021-11-09 09:09:33,216 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:09:33,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884115816] [2021-11-09 09:09:33,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1884115816] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:09:33,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:09:33,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-11-09 09:09:33,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803680849] [2021-11-09 09:09:33,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:09:33,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:33,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:09:33,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:33,220 INFO L87 Difference]: Start difference. First operand 710 states and 887 transitions. Second operand has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:33,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:33,298 INFO L93 Difference]: Finished difference Result 1378 states and 1733 transitions. [2021-11-09 09:09:33,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:09:33,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 171 [2021-11-09 09:09:33,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:33,304 INFO L225 Difference]: With dead ends: 1378 [2021-11-09 09:09:33,304 INFO L226 Difference]: Without dead ends: 712 [2021-11-09 09:09:33,305 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:09:33,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-11-09 09:09:33,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 712. [2021-11-09 09:09:33,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 696 states have (on average 1.2772988505747127) internal successors, (889), 711 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:33,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 889 transitions. [2021-11-09 09:09:33,331 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 889 transitions. Word has length 171 [2021-11-09 09:09:33,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:33,332 INFO L470 AbstractCegarLoop]: Abstraction has 712 states and 889 transitions. [2021-11-09 09:09:33,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:33,332 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 889 transitions. [2021-11-09 09:09:33,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-09 09:09:33,335 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:33,335 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:33,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:33,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-09 09:09:33,549 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 09:09:33,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:33,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1357884363, now seen corresponding path program 2 times [2021-11-09 09:09:33,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:33,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587413759] [2021-11-09 09:09:33,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:33,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:33,580 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:09:33,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [51562424] [2021-11-09 09:09:33,580 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:09:33,580 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:33,581 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:33,587 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:33,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-09 09:09:46,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:09:46,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:09:46,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 627 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-09 09:09:46,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:09:47,123 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-09 09:09:47,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:09:47,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587413759] [2021-11-09 09:09:47,124 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:09:47,124 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51562424] [2021-11-09 09:09:47,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51562424] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:09:47,124 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:09:47,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-09 09:09:47,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483458413] [2021-11-09 09:09:47,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:09:47,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:09:47,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:09:47,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:09:47,126 INFO L87 Difference]: Start difference. First operand 712 states and 889 transitions. Second operand has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:47,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:09:47,339 INFO L93 Difference]: Finished difference Result 2652 states and 3346 transitions. [2021-11-09 09:09:47,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:09:47,340 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 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 173 [2021-11-09 09:09:47,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:09:47,350 INFO L225 Difference]: With dead ends: 2652 [2021-11-09 09:09:47,351 INFO L226 Difference]: Without dead ends: 1990 [2021-11-09 09:09:47,352 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:09:47,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2021-11-09 09:09:47,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 714. [2021-11-09 09:09:47,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 698 states have (on average 1.2765042979942693) internal successors, (891), 713 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:47,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 891 transitions. [2021-11-09 09:09:47,393 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 891 transitions. Word has length 173 [2021-11-09 09:09:47,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:09:47,393 INFO L470 AbstractCegarLoop]: Abstraction has 714 states and 891 transitions. [2021-11-09 09:09:47,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.428571428571427) internal successors, (171), 7 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 09:09:47,394 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 891 transitions. [2021-11-09 09:09:47,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-09 09:09:47,396 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:09:47,396 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:09:47,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-09 09:09:47,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:47,611 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-09 09:09:47,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:09:47,611 INFO L85 PathProgramCache]: Analyzing trace with hash 2057409598, now seen corresponding path program 3 times [2021-11-09 09:09:47,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:09:47,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860089706] [2021-11-09 09:09:47,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:09:47,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:09:47,636 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:09:47,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768046930] [2021-11-09 09:09:47,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:09:47,637 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:09:47,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:09:47,638 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:09:47,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_064459ef-ff84-44d2-b1a4-8d1371aa1d0e/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process