./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/ifcomp.c --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_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/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_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/ifcomp.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/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_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/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 0d2a65255d8b2e6b68882339bb2639d8ae744f5b340e0d3d33c067476b0c9dc7 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:43:14,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:43:14,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:43:14,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:43:14,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:43:14,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:43:14,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:43:14,448 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:43:14,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:43:14,466 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:43:14,467 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:43:14,470 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:43:14,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:43:14,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:43:14,477 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:43:14,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:43:14,482 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:43:14,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:43:14,490 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:43:14,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:43:14,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:43:14,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:43:14,510 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:43:14,511 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:43:14,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:43:14,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:43:14,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:43:14,526 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:43:14,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:43:14,529 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:43:14,530 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:43:14,531 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:43:14,534 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:43:14,535 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:43:14,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:43:14,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:43:14,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:43:14,539 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:43:14,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:43:14,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:43:14,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:43:14,542 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:43:14,585 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:43:14,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:43:14,586 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:43:14,587 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:43:14,588 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:43:14,588 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:43:14,589 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:43:14,589 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:43:14,589 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:43:14,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:43:14,590 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:43:14,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:43:14,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:43:14,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:43:14,591 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:43:14,591 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:43:14,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:43:14,592 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:43:14,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:43:14,592 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:43:14,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:43:14,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:43:14,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:43:14,593 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:43:14,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:43:14,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:43:14,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:43:14,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:43:14,594 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:43:14,595 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:43:14,595 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:43:14,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:43:14,595 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_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d2a65255d8b2e6b68882339bb2639d8ae744f5b340e0d3d33c067476b0c9dc7 [2021-11-09 09:43:14,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:43:14,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:43:14,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:43:14,926 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:43:14,929 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:43:14,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/array-fpi/ifcomp.c [2021-11-09 09:43:15,004 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/data/62ff36a4a/9f99ce3775f4476786b169d4dbb161f4/FLAGaef44b55d [2021-11-09 09:43:15,521 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:43:15,526 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/sv-benchmarks/c/array-fpi/ifcomp.c [2021-11-09 09:43:15,541 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/data/62ff36a4a/9f99ce3775f4476786b169d4dbb161f4/FLAGaef44b55d [2021-11-09 09:43:15,865 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/data/62ff36a4a/9f99ce3775f4476786b169d4dbb161f4 [2021-11-09 09:43:15,873 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:43:15,875 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:43:15,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:43:15,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:43:15,885 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:43:15,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:43:15" (1/1) ... [2021-11-09 09:43:15,888 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7706e0ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:43:15, skipping insertion in model container [2021-11-09 09:43:15,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:43:15" (1/1) ... [2021-11-09 09:43:15,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:43:15,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:43:16,117 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_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/sv-benchmarks/c/array-fpi/ifcomp.c[589,602] [2021-11-09 09:43:16,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:43:16,148 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:43:16,160 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_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/sv-benchmarks/c/array-fpi/ifcomp.c[589,602] [2021-11-09 09:43:16,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:43:16,189 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:43:16,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:43:16 WrapperNode [2021-11-09 09:43:16,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:43:16,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:43:16,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:43:16,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:43:16,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:43:16" (1/1) ... [2021-11-09 09:43:16,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:43:16" (1/1) ... [2021-11-09 09:43:16,245 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:43:16,246 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:43:16,247 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:43:16,247 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:43:16,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:43:16" (1/1) ... [2021-11-09 09:43:16,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:43:16" (1/1) ... [2021-11-09 09:43:16,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:43:16" (1/1) ... [2021-11-09 09:43:16,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:43:16" (1/1) ... [2021-11-09 09:43:16,293 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:43:16" (1/1) ... [2021-11-09 09:43:16,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:43:16" (1/1) ... [2021-11-09 09:43:16,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:43:16" (1/1) ... [2021-11-09 09:43:16,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:43:16,317 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:43:16,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:43:16,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:43:16,318 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:43:16" (1/1) ... [2021-11-09 09:43:16,332 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:43:16,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:43:16,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:43:16,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:43:16,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:43:16,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:43:16,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-09 09:43:16,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 09:43:16,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:43:16,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:43:16,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-09 09:43:16,841 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:43:16,841 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-09 09:43:16,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:43:16 BoogieIcfgContainer [2021-11-09 09:43:16,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:43:16,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:43:16,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:43:16,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:43:16,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:43:15" (1/3) ... [2021-11-09 09:43:16,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675f8850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:43:16, skipping insertion in model container [2021-11-09 09:43:16,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:43:16" (2/3) ... [2021-11-09 09:43:16,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@675f8850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:43:16, skipping insertion in model container [2021-11-09 09:43:16,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:43:16" (3/3) ... [2021-11-09 09:43:16,871 INFO L111 eAbstractionObserver]: Analyzing ICFG ifcomp.c [2021-11-09 09:43:16,877 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:43:16,890 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 09:43:16,958 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:43:16,966 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 09:43:16,967 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 09:43:16,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 25 states have (on average 1.6) internal successors, (40), 26 states have internal predecessors, (40), 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 09:43:16,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-09 09:43:16,990 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:43:16,991 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:43:16,992 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:43:16,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:43:16,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1152450264, now seen corresponding path program 1 times [2021-11-09 09:43:17,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:43:17,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360193842] [2021-11-09 09:43:17,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:43:17,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:43:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:43:17,188 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 09:43:17,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:43:17,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360193842] [2021-11-09 09:43:17,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360193842] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:43:17,191 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:43:17,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 09:43:17,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983991426] [2021-11-09 09:43:17,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 09:43:17,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:43:17,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:43:17,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:43:17,217 INFO L87 Difference]: Start difference. First operand has 27 states, 25 states have (on average 1.6) internal successors, (40), 26 states have internal predecessors, (40), 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 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 09:43:17,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:43:17,235 INFO L93 Difference]: Finished difference Result 50 states and 74 transitions. [2021-11-09 09:43:17,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:43:17,236 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 14 [2021-11-09 09:43:17,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:43:17,243 INFO L225 Difference]: With dead ends: 50 [2021-11-09 09:43:17,243 INFO L226 Difference]: Without dead ends: 23 [2021-11-09 09:43:17,246 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 09:43:17,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-09 09:43:17,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-09 09:43:17,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 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 09:43:17,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2021-11-09 09:43:17,278 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 14 [2021-11-09 09:43:17,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:43:17,278 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2021-11-09 09:43:17,279 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 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 09:43:17,279 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2021-11-09 09:43:17,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-09 09:43:17,280 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:43:17,280 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:43:17,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:43:17,281 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:43:17,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:43:17,282 INFO L85 PathProgramCache]: Analyzing trace with hash 670750212, now seen corresponding path program 1 times [2021-11-09 09:43:17,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:43:17,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97908642] [2021-11-09 09:43:17,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:43:17,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:43:17,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:43:17,374 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 09:43:17,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:43:17,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97908642] [2021-11-09 09:43:17,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97908642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:43:17,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:43:17,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-09 09:43:17,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443431889] [2021-11-09 09:43:17,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 09:43:17,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:43:17,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 09:43:17,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:43:17,379 INFO L87 Difference]: Start difference. First operand 23 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 09:43:17,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:43:17,556 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions. [2021-11-09 09:43:17,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 09:43:17,560 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-11-09 09:43:17,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:43:17,561 INFO L225 Difference]: With dead ends: 56 [2021-11-09 09:43:17,562 INFO L226 Difference]: Without dead ends: 38 [2021-11-09 09:43:17,564 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 09:43:17,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-09 09:43:17,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2021-11-09 09:43:17,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 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 09:43:17,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-11-09 09:43:17,577 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 14 [2021-11-09 09:43:17,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:43:17,577 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-11-09 09:43:17,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 09:43:17,578 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-11-09 09:43:17,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-09 09:43:17,580 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:43:17,580 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] [2021-11-09 09:43:17,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 09:43:17,581 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:43:17,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:43:17,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1978137699, now seen corresponding path program 1 times [2021-11-09 09:43:17,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:43:17,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146150748] [2021-11-09 09:43:17,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:43:17,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:43:17,628 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:43:17,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1417894594] [2021-11-09 09:43:17,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:43:17,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:43:17,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:43:17,631 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:43:17,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-09 09:43:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:43:17,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 09:43:17,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:43:17,873 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 09:43:18,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:43:18,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:43:18,059 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146150748] [2021-11-09 09:43:18,060 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:43:18,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1417894594] [2021-11-09 09:43:18,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1417894594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:43:18,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:43:18,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-09 09:43:18,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473990255] [2021-11-09 09:43:18,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 09:43:18,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:43:18,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 09:43:18,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 09:43:18,066 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 09:43:18,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:43:18,166 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2021-11-09 09:43:18,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 09:43:18,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 23 [2021-11-09 09:43:18,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:43:18,168 INFO L225 Difference]: With dead ends: 46 [2021-11-09 09:43:18,168 INFO L226 Difference]: Without dead ends: 44 [2021-11-09 09:43:18,169 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:43:18,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-09 09:43:18,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2021-11-09 09:43:18,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 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 09:43:18,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2021-11-09 09:43:18,177 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 23 [2021-11-09 09:43:18,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:43:18,178 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2021-11-09 09:43:18,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 09:43:18,178 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2021-11-09 09:43:18,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-09 09:43:18,180 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:43:18,180 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 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 09:43:18,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-09 09:43:18,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:43:18,405 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:43:18,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:43:18,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1659346963, now seen corresponding path program 1 times [2021-11-09 09:43:18,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:43:18,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720054844] [2021-11-09 09:43:18,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:43:18,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:43:18,440 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:43:18,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521406912] [2021-11-09 09:43:18,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:43:18,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:43:18,441 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:43:18,443 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:43:18,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-09 09:43:18,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:43:18,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-09 09:43:18,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:43:18,686 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:43:18,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:43:18,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720054844] [2021-11-09 09:43:18,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:43:18,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521406912] [2021-11-09 09:43:18,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521406912] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:43:18,688 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:43:18,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-11-09 09:43:18,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073845158] [2021-11-09 09:43:18,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-09 09:43:18,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:43:18,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-09 09:43:18,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:43:18,691 INFO L87 Difference]: Start difference. First operand 34 states and 41 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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 09:43:18,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:43:18,868 INFO L93 Difference]: Finished difference Result 92 states and 111 transitions. [2021-11-09 09:43:18,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-09 09:43:18,869 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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 26 [2021-11-09 09:43:18,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:43:18,871 INFO L225 Difference]: With dead ends: 92 [2021-11-09 09:43:18,871 INFO L226 Difference]: Without dead ends: 53 [2021-11-09 09:43:18,872 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:43:18,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-09 09:43:18,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 35. [2021-11-09 09:43:18,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 34 states have internal predecessors, (41), 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 09:43:18,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 41 transitions. [2021-11-09 09:43:18,883 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 41 transitions. Word has length 26 [2021-11-09 09:43:18,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:43:18,883 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 41 transitions. [2021-11-09 09:43:18,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 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 09:43:18,884 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 41 transitions. [2021-11-09 09:43:18,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-09 09:43:18,885 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:43:18,885 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:43:18,923 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-09 09:43:19,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:43:19,086 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:43:19,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:43:19,087 INFO L85 PathProgramCache]: Analyzing trace with hash -643446870, now seen corresponding path program 1 times [2021-11-09 09:43:19,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:43:19,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728352572] [2021-11-09 09:43:19,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:43:19,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:43:19,161 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:43:19,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748434539] [2021-11-09 09:43:19,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:43:19,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:43:19,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:43:19,167 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:43:19,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-09 09:43:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:43:19,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-09 09:43:19,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:43:19,502 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 09:43:19,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:19,645 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-11-09 09:43:19,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 29 [2021-11-09 09:43:19,771 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-09 09:43:19,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:43:19,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728352572] [2021-11-09 09:43:19,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:43:19,778 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748434539] [2021-11-09 09:43:19,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748434539] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:43:19,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:43:19,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-11-09 09:43:19,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989770830] [2021-11-09 09:43:19,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:43:19,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:43:19,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:43:19,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:43:19,792 INFO L87 Difference]: Start difference. First operand 35 states and 41 transitions. Second operand has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 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 09:43:19,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:43:19,963 INFO L93 Difference]: Finished difference Result 74 states and 86 transitions. [2021-11-09 09:43:19,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-09 09:43:19,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 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 32 [2021-11-09 09:43:19,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:43:19,976 INFO L225 Difference]: With dead ends: 74 [2021-11-09 09:43:19,977 INFO L226 Difference]: Without dead ends: 62 [2021-11-09 09:43:19,978 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:43:19,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-09 09:43:19,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 41. [2021-11-09 09:43:19,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 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 09:43:19,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2021-11-09 09:43:19,993 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2021-11-09 09:43:19,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:43:19,994 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2021-11-09 09:43:19,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 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 09:43:19,996 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2021-11-09 09:43:19,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-09 09:43:19,998 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:43:19,998 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:43:20,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-09 09:43:20,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:43:20,227 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:43:20,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:43:20,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1602880704, now seen corresponding path program 2 times [2021-11-09 09:43:20,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:43:20,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121074592] [2021-11-09 09:43:20,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:43:20,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:43:20,267 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:43:20,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1415759177] [2021-11-09 09:43:20,268 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:43:20,268 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:43:20,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:43:20,269 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:43:20,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-09 09:43:20,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:43:20,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:43:20,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-09 09:43:20,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:43:20,574 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-09 09:43:20,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:43:20,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121074592] [2021-11-09 09:43:20,575 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:43:20,575 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415759177] [2021-11-09 09:43:20,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415759177] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:43:20,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:43:20,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-11-09 09:43:20,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67298246] [2021-11-09 09:43:20,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-09 09:43:20,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:43:20,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-09 09:43:20,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-09 09:43:20,579 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 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 09:43:20,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:43:20,862 INFO L93 Difference]: Finished difference Result 124 states and 146 transitions. [2021-11-09 09:43:20,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-09 09:43:20,863 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 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 35 [2021-11-09 09:43:20,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:43:20,866 INFO L225 Difference]: With dead ends: 124 [2021-11-09 09:43:20,866 INFO L226 Difference]: Without dead ends: 95 [2021-11-09 09:43:20,866 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-11-09 09:43:20,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-11-09 09:43:20,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 67. [2021-11-09 09:43:20,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.1818181818181819) internal successors, (78), 66 states have internal predecessors, (78), 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 09:43:20,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 78 transitions. [2021-11-09 09:43:20,893 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 78 transitions. Word has length 35 [2021-11-09 09:43:20,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:43:20,893 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 78 transitions. [2021-11-09 09:43:20,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 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 09:43:20,894 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 78 transitions. [2021-11-09 09:43:20,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-09 09:43:20,899 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:43:20,899 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:43:20,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-09 09:43:21,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:43:21,127 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:43:21,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:43:21,127 INFO L85 PathProgramCache]: Analyzing trace with hash -2051071008, now seen corresponding path program 1 times [2021-11-09 09:43:21,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:43:21,128 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495931361] [2021-11-09 09:43:21,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:43:21,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:43:21,176 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:43:21,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759603690] [2021-11-09 09:43:21,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:43:21,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:43:21,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:43:21,181 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:43:21,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-09 09:43:21,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:43:21,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 30 conjunts are in the unsatisfiable core [2021-11-09 09:43:21,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:43:21,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 12 [2021-11-09 09:43:21,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 09:43:21,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:21,785 INFO L354 Elim1Store]: treesize reduction 33, result has 34.0 percent of original size [2021-11-09 09:43:21,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 35 treesize of output 43 [2021-11-09 09:43:21,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-09 09:43:22,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:22,110 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-09 09:43:22,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 32 [2021-11-09 09:43:22,416 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-09 09:43:22,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 35 [2021-11-09 09:43:22,440 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:43:22,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:43:22,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495931361] [2021-11-09 09:43:22,441 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:43:22,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759603690] [2021-11-09 09:43:22,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759603690] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:43:22,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:43:22,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-11-09 09:43:22,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590849394] [2021-11-09 09:43:22,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-09 09:43:22,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:43:22,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-09 09:43:22,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-09 09:43:22,445 INFO L87 Difference]: Start difference. First operand 67 states and 78 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 09:43:23,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:43:23,048 INFO L93 Difference]: Finished difference Result 122 states and 141 transitions. [2021-11-09 09:43:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-09 09:43:23,049 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 36 [2021-11-09 09:43:23,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:43:23,050 INFO L225 Difference]: With dead ends: 122 [2021-11-09 09:43:23,050 INFO L226 Difference]: Without dead ends: 58 [2021-11-09 09:43:23,051 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2021-11-09 09:43:23,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-09 09:43:23,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2021-11-09 09:43:23,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.18) internal successors, (59), 50 states have internal predecessors, (59), 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 09:43:23,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 59 transitions. [2021-11-09 09:43:23,059 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 59 transitions. Word has length 36 [2021-11-09 09:43:23,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:43:23,060 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 59 transitions. [2021-11-09 09:43:23,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 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 09:43:23,060 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 59 transitions. [2021-11-09 09:43:23,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-09 09:43:23,061 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:43:23,062 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:43:23,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-09 09:43:23,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:43:23,275 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:43:23,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:43:23,275 INFO L85 PathProgramCache]: Analyzing trace with hash 27709117, now seen corresponding path program 3 times [2021-11-09 09:43:23,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:43:23,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093265432] [2021-11-09 09:43:23,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:43:23,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:43:23,312 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:43:23,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1716671472] [2021-11-09 09:43:23,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:43:23,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:43:23,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:43:23,314 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:43:23,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-09 09:43:24,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-09 09:43:24,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:43:24,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-09 09:43:24,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:43:24,784 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 09:43:24,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:24,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:24,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:24,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:24,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:24,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:24,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:24,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:24,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:24,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:24,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:24,965 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:24,966 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:24,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:24,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:24,980 INFO L354 Elim1Store]: treesize reduction 27, result has 3.6 percent of original size [2021-11-09 09:43:24,981 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 5 select indices, 5 select index equivalence classes, 5 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 229 treesize of output 397 [2021-11-09 09:43:25,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,077 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:25,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,086 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:25,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,089 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:25,102 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-09 09:43:25,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 306 treesize of output 202 [2021-11-09 09:43:25,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:25,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,195 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:25,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,198 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:25,206 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-09 09:43:25,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 210 treesize of output 119 [2021-11-09 09:43:25,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,229 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:25,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:25,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:25,242 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-09 09:43:25,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 205 treesize of output 94 [2021-11-09 09:43:25,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,510 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:25,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,516 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:25,517 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:25,531 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-09 09:43:25,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 15 case distinctions, treesize of input 254 treesize of output 442 [2021-11-09 09:43:25,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,962 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:25,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,967 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:25,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:25,970 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:25,984 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-09 09:43:25,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 321 treesize of output 205 [2021-11-09 09:43:26,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,121 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:26,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:26,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,128 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:26,137 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-09 09:43:26,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 250 treesize of output 129 [2021-11-09 09:43:26,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,161 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,165 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:26,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,169 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:26,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:26,171 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:26,176 INFO L354 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2021-11-09 09:43:26,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 8 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 15 case distinctions, treesize of input 243 treesize of output 113 [2021-11-09 09:43:26,513 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-09 09:43:26,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:43:26,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093265432] [2021-11-09 09:43:26,514 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:43:26,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716671472] [2021-11-09 09:43:26,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716671472] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:43:26,514 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:43:26,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-11-09 09:43:26,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351994080] [2021-11-09 09:43:26,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-09 09:43:26,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:43:26,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-09 09:43:26,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2021-11-09 09:43:26,517 INFO L87 Difference]: Start difference. First operand 51 states and 59 transitions. Second operand has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 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 09:43:30,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:43:30,277 INFO L93 Difference]: Finished difference Result 233 states and 271 transitions. [2021-11-09 09:43:30,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-09 09:43:30,278 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 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 41 [2021-11-09 09:43:30,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:43:30,280 INFO L225 Difference]: With dead ends: 233 [2021-11-09 09:43:30,280 INFO L226 Difference]: Without dead ends: 189 [2021-11-09 09:43:30,281 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=248, Invalid=808, Unknown=0, NotChecked=0, Total=1056 [2021-11-09 09:43:30,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-11-09 09:43:30,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 95. [2021-11-09 09:43:30,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.1808510638297873) internal successors, (111), 94 states have internal predecessors, (111), 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 09:43:30,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 111 transitions. [2021-11-09 09:43:30,309 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 111 transitions. Word has length 41 [2021-11-09 09:43:30,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:43:30,311 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 111 transitions. [2021-11-09 09:43:30,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 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 09:43:30,312 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 111 transitions. [2021-11-09 09:43:30,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-09 09:43:30,315 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:43:30,315 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:43:30,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-09 09:43:30,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:43:30,521 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:43:30,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:43:30,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1356840755, now seen corresponding path program 4 times [2021-11-09 09:43:30,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:43:30,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047389321] [2021-11-09 09:43:30,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:43:30,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:43:30,582 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:43:30,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12472865] [2021-11-09 09:43:30,583 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 09:43:30,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:43:30,583 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:43:30,584 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:43:30,602 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-09 09:43:30,811 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 09:43:30,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:43:30,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 09:43:30,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:43:31,091 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 22 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-09 09:43:31,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:43:31,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047389321] [2021-11-09 09:43:31,092 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:43:31,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12472865] [2021-11-09 09:43:31,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12472865] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:43:31,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:43:31,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-09 09:43:31,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569973845] [2021-11-09 09:43:31,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:43:31,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:43:31,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:43:31,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:43:31,097 INFO L87 Difference]: Start difference. First operand 95 states and 111 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 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 09:43:31,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:43:31,407 INFO L93 Difference]: Finished difference Result 174 states and 194 transitions. [2021-11-09 09:43:31,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-09 09:43:31,408 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 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 09:43:31,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:43:31,409 INFO L225 Difference]: With dead ends: 174 [2021-11-09 09:43:31,409 INFO L226 Difference]: Without dead ends: 138 [2021-11-09 09:43:31,410 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2021-11-09 09:43:31,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-11-09 09:43:31,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 98. [2021-11-09 09:43:31,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 97 states have (on average 1.1443298969072164) internal successors, (111), 97 states have internal predecessors, (111), 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 09:43:31,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2021-11-09 09:43:31,429 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 44 [2021-11-09 09:43:31,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:43:31,430 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2021-11-09 09:43:31,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 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 09:43:31,430 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2021-11-09 09:43:31,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-09 09:43:31,435 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:43:31,435 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:43:31,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-09 09:43:31,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:43:31,655 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:43:31,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:43:31,656 INFO L85 PathProgramCache]: Analyzing trace with hash 686844275, now seen corresponding path program 2 times [2021-11-09 09:43:31,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:43:31,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101003748] [2021-11-09 09:43:31,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:43:31,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:43:31,698 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:43:31,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1879772824] [2021-11-09 09:43:31,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:43:31,710 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:43:31,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:43:31,711 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:43:31,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-09 09:43:32,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:43:32,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:43:32,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-09 09:43:32,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:43:32,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 14 treesize of output 12 [2021-11-09 09:43:32,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 09:43:32,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,764 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:32,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,774 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:32,775 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:32,784 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-09 09:43:32,785 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 6 case distinctions, treesize of input 229 treesize of output 369 [2021-11-09 09:43:32,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,848 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:32,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:32,862 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-09 09:43:32,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 169 treesize of output 108 [2021-11-09 09:43:32,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,919 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,921 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:32,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,924 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:32,931 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-09 09:43:32,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 197 treesize of output 111 [2021-11-09 09:43:32,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:32,953 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:32,954 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:32,960 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-09 09:43:32,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 151 treesize of output 90 [2021-11-09 09:43:33,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:33,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:33,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:33,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:33,230 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:33,234 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-09 09:43:33,235 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 56 treesize of output 54 [2021-11-09 09:43:35,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:35,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:35,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:35,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:35,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:35,401 INFO L354 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2021-11-09 09:43:35,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 68 treesize of output 65 [2021-11-09 09:43:37,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,388 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:37,389 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:37,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:37,413 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:37,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:37,507 INFO L354 Elim1Store]: treesize reduction 162, result has 16.9 percent of original size [2021-11-09 09:43:37,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 14 new quantified variables, introduced 49 case distinctions, treesize of input 280 treesize of output 570 [2021-11-09 09:43:37,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,736 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:37,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,767 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:37,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,772 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:37,783 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-09 09:43:37,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 11 disjoint index pairs (out of 55 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 247 treesize of output 158 [2021-11-09 09:43:37,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,849 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:37,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,866 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:37,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:37,876 INFO L354 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2021-11-09 09:43:37,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 11 disjoint index pairs (out of 55 index pairs), introduced 9 new quantified variables, introduced 10 case distinctions, treesize of input 267 treesize of output 166 [2021-11-09 09:43:37,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,991 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:37,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:37,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:38,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:38,007 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:38,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:38,009 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:38,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:38,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:38,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:38,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:38,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:38,013 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:38,031 INFO L354 Elim1Store]: treesize reduction 57, result has 5.0 percent of original size [2021-11-09 09:43:38,032 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 9 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 40 case distinctions, treesize of input 303 treesize of output 180 [2021-11-09 09:43:39,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:39,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:39,531 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:39,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:39,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:39,534 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:39,553 INFO L354 Elim1Store]: treesize reduction 67, result has 9.5 percent of original size [2021-11-09 09:43:39,553 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 3 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 22 case distinctions, treesize of input 97 treesize of output 88 [2021-11-09 09:43:40,484 INFO L354 Elim1Store]: treesize reduction 36, result has 36.8 percent of original size [2021-11-09 09:43:40,484 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 3 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 129 treesize of output 73 [2021-11-09 09:43:40,519 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-09 09:43:40,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:43:40,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101003748] [2021-11-09 09:43:40,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:43:40,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879772824] [2021-11-09 09:43:40,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879772824] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:43:40,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:43:40,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-11-09 09:43:40,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028674231] [2021-11-09 09:43:40,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-09 09:43:40,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:43:40,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-09 09:43:40,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=286, Unknown=2, NotChecked=0, Total=342 [2021-11-09 09:43:40,523 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 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 09:43:51,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:43:51,805 INFO L93 Difference]: Finished difference Result 130 states and 143 transitions. [2021-11-09 09:43:51,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-09 09:43:51,806 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 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 45 [2021-11-09 09:43:51,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:43:51,807 INFO L225 Difference]: With dead ends: 130 [2021-11-09 09:43:51,807 INFO L226 Difference]: Without dead ends: 128 [2021-11-09 09:43:51,808 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=151, Invalid=839, Unknown=2, NotChecked=0, Total=992 [2021-11-09 09:43:51,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-09 09:43:51,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 100. [2021-11-09 09:43:51,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.1414141414141414) internal successors, (113), 99 states have internal predecessors, (113), 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 09:43:51,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2021-11-09 09:43:51,823 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 45 [2021-11-09 09:43:51,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:43:51,824 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2021-11-09 09:43:51,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 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 09:43:51,824 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2021-11-09 09:43:51,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-09 09:43:51,825 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:43:51,825 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:43:51,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-09 09:43:52,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:43:52,051 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:43:52,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:43:52,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1067469728, now seen corresponding path program 5 times [2021-11-09 09:43:52,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:43:52,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23792119] [2021-11-09 09:43:52,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:43:52,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:43:52,100 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:43:52,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [724340470] [2021-11-09 09:43:52,103 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 09:43:52,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:43:52,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:43:52,105 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:43:52,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-09 09:43:56,036 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-11-09 09:43:56,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:43:56,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-09 09:43:56,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:43:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 19 proven. 15 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-09 09:43:56,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:43:56,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23792119] [2021-11-09 09:43:56,217 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-09 09:43:56,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724340470] [2021-11-09 09:43:56,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724340470] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-09 09:43:56,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-11-09 09:43:56,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-11-09 09:43:56,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872859986] [2021-11-09 09:43:56,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-09 09:43:56,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:43:56,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-09 09:43:56,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-09 09:43:56,219 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 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 09:43:56,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:43:56,572 INFO L93 Difference]: Finished difference Result 209 states and 233 transitions. [2021-11-09 09:43:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-09 09:43:56,573 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 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 47 [2021-11-09 09:43:56,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:43:56,575 INFO L225 Difference]: With dead ends: 209 [2021-11-09 09:43:56,575 INFO L226 Difference]: Without dead ends: 116 [2021-11-09 09:43:56,576 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-11-09 09:43:56,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-09 09:43:56,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 86. [2021-11-09 09:43:56,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.0588235294117647) internal successors, (90), 85 states have internal predecessors, (90), 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 09:43:56,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2021-11-09 09:43:56,586 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 47 [2021-11-09 09:43:56,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:43:56,587 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2021-11-09 09:43:56,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 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 09:43:56,587 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2021-11-09 09:43:56,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-09 09:43:56,588 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:43:56,588 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:43:56,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-11-09 09:43:56,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-09 09:43:56,797 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:43:56,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:43:56,797 INFO L85 PathProgramCache]: Analyzing trace with hash 132233513, now seen corresponding path program 3 times [2021-11-09 09:43:56,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:43:56,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384305970] [2021-11-09 09:43:56,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:43:56,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:43:56,855 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-09 09:43:56,868 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1888686573] [2021-11-09 09:43:56,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:43:56,869 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-09 09:43:56,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:43:56,870 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-09 09:43:56,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f1e3f0a5-fe2f-403d-b009-1261bb3aec72/bin/uautomizer-IVEQpCNsaX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-09 09:43:57,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-09 09:43:57,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:43:57,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-09 09:43:57,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:43:57,871 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-09 09:43:57,873 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2021-11-09 09:43:57,961 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 09:43:58,125 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:58,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 8 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 179 treesize of output 245 [2021-11-09 09:43:58,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 44 [2021-11-09 09:43:58,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 44 [2021-11-09 09:43:58,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 39 [2021-11-09 09:43:58,553 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:58,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 4 select indices, 4 select index equivalence classes, 12 disjoint index pairs (out of 6 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 278 [2021-11-09 09:43:58,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 66 [2021-11-09 09:43:58,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,740 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 85 [2021-11-09 09:43:58,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:58,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 8 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 69 [2021-11-09 09:43:59,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 46 [2021-11-09 09:43:59,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,391 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:59,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:59,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,412 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:59,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,415 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:59,440 INFO L354 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2021-11-09 09:43:59,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 10 new quantified variables, introduced 17 case distinctions, treesize of input 254 treesize of output 450 [2021-11-09 09:43:59,518 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 80 [2021-11-09 09:43:59,555 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-09 09:43:59,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 121 [2021-11-09 09:43:59,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 12 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 57 [2021-11-09 09:43:59,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,955 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,964 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:59,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:59,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:43:59,988 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:43:59,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,201 INFO L354 Elim1Store]: treesize reduction 542, result has 15.4 percent of original size [2021-11-09 09:44:00,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 9 select indices, 9 select index equivalence classes, 17 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 42 case distinctions, treesize of input 257 treesize of output 545 [2021-11-09 09:44:00,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,503 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 23 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 228 treesize of output 137 [2021-11-09 09:44:00,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:00,815 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-09 09:44:00,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 22 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 1 case distinctions, treesize of input 228 treesize of output 151 [2021-11-09 09:44:01,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 19 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 134 [2021-11-09 09:44:01,354 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-09 09:44:01,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:01,934 INFO L354 Elim1Store]: treesize reduction 81, result has 12.9 percent of original size [2021-11-09 09:44:01,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 17 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 6 case distinctions, treesize of input 598 treesize of output 427 [2021-11-09 09:44:02,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 23 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 337 treesize of output 195 [2021-11-09 09:44:02,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,783 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:44:02,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:02,796 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:44:02,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 12 disjoint index pairs (out of 36 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 583 treesize of output 406 [2021-11-09 09:44:03,727 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-09 09:44:03,779 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-09 09:44:04,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,440 INFO L354 Elim1Store]: treesize reduction 76, result has 1.3 percent of original size [2021-11-09 09:44:04,440 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 18 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 5 case distinctions, treesize of input 508 treesize of output 288 [2021-11-09 09:44:04,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,616 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:04,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 23 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 331 treesize of output 195 [2021-11-09 09:44:05,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:44:05,851 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:44:05,852 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:44:05,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,859 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-09 09:44:05,860 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 20 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 25 case distinctions, treesize of input 237 treesize of output 131 [2021-11-09 09:44:05,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,902 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,908 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,918 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:44:05,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:44:05,919 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:44:05,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:05,926 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-11-09 09:44:05,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 21 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 25 case distinctions, treesize of input 223 treesize of output 119 [2021-11-09 09:44:06,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:06,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:06,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:06,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:06,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:06,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:06,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:06,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:06,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:06,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:06,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:06,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:06,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:06,026 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:44:06,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:44:06,027 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 09:44:06,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-09 09:44:06,038 INFO L354 Elim1Store]: treesize reduction 206, result has 0.5 percent of original size [2021-11-09 09:44:06,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 30 case distinctions, treesize of input 264 treesize of output 124