./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s3lif.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-fpi/s3lif.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa --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 3aac75742402b60de8e734a48b2dd5180b95add96e084901e84c53f880aa300a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 18:11:09,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 18:11:09,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 18:11:09,401 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 18:11:09,402 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 18:11:09,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 18:11:09,405 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 18:11:09,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 18:11:09,409 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 18:11:09,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 18:11:09,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 18:11:09,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 18:11:09,412 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 18:11:09,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 18:11:09,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 18:11:09,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 18:11:09,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 18:11:09,418 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 18:11:09,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 18:11:09,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 18:11:09,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 18:11:09,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 18:11:09,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 18:11:09,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 18:11:09,431 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 18:11:09,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 18:11:09,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 18:11:09,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 18:11:09,433 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 18:11:09,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 18:11:09,435 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 18:11:09,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 18:11:09,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 18:11:09,437 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 18:11:09,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 18:11:09,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 18:11:09,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 18:11:09,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 18:11:09,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 18:11:09,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 18:11:09,440 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 18:11:09,440 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 18:11:09,462 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 18:11:09,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 18:11:09,463 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 18:11:09,463 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 18:11:09,464 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 18:11:09,464 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 18:11:09,464 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 18:11:09,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 18:11:09,465 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 18:11:09,465 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 18:11:09,465 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 18:11:09,465 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 18:11:09,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 18:11:09,466 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 18:11:09,466 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 18:11:09,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 18:11:09,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 18:11:09,466 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 18:11:09,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 18:11:09,467 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 18:11:09,467 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 18:11:09,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 18:11:09,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 18:11:09,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 18:11:09,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:11:09,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 18:11:09,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 18:11:09,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 18:11:09,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 18:11:09,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 18:11:09,469 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 18:11:09,469 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 18:11:09,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 18:11:09,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 18:11:09,469 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_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3aac75742402b60de8e734a48b2dd5180b95add96e084901e84c53f880aa300a [2021-12-06 18:11:09,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 18:11:09,657 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 18:11:09,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 18:11:09,660 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 18:11:09,660 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 18:11:09,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/array-fpi/s3lif.c [2021-12-06 18:11:09,706 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/data/e353ec2a7/6142a4e29d98499ba72b4e3b120b61fc/FLAG11809324b [2021-12-06 18:11:10,083 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 18:11:10,084 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/sv-benchmarks/c/array-fpi/s3lif.c [2021-12-06 18:11:10,088 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/data/e353ec2a7/6142a4e29d98499ba72b4e3b120b61fc/FLAG11809324b [2021-12-06 18:11:10,098 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/data/e353ec2a7/6142a4e29d98499ba72b4e3b120b61fc [2021-12-06 18:11:10,100 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 18:11:10,101 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 18:11:10,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 18:11:10,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 18:11:10,105 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 18:11:10,106 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:11:10" (1/1) ... [2021-12-06 18:11:10,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d78efb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:10, skipping insertion in model container [2021-12-06 18:11:10,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:11:10" (1/1) ... [2021-12-06 18:11:10,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 18:11:10,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 18:11:10,234 WARN L230 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_0d3ae4e5-5f36-499a-baaa-6b89f451480f/sv-benchmarks/c/array-fpi/s3lif.c[588,601] [2021-12-06 18:11:10,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:11:10,252 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 18:11:10,261 WARN L230 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_0d3ae4e5-5f36-499a-baaa-6b89f451480f/sv-benchmarks/c/array-fpi/s3lif.c[588,601] [2021-12-06 18:11:10,266 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 18:11:10,276 INFO L208 MainTranslator]: Completed translation [2021-12-06 18:11:10,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:10 WrapperNode [2021-12-06 18:11:10,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 18:11:10,277 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 18:11:10,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 18:11:10,278 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 18:11:10,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:10" (1/1) ... [2021-12-06 18:11:10,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:10" (1/1) ... [2021-12-06 18:11:10,303 INFO L137 Inliner]: procedures = 17, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2021-12-06 18:11:10,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 18:11:10,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 18:11:10,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 18:11:10,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 18:11:10,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:10" (1/1) ... [2021-12-06 18:11:10,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:10" (1/1) ... [2021-12-06 18:11:10,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:10" (1/1) ... [2021-12-06 18:11:10,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:10" (1/1) ... [2021-12-06 18:11:10,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:10" (1/1) ... [2021-12-06 18:11:10,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:10" (1/1) ... [2021-12-06 18:11:10,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:10" (1/1) ... [2021-12-06 18:11:10,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 18:11:10,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 18:11:10,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 18:11:10,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 18:11:10,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:10" (1/1) ... [2021-12-06 18:11:10,330 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 18:11:10,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:11:10,352 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 18:11:10,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 18:11:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 18:11:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 18:11:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 18:11:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 18:11:10,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 18:11:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 18:11:10,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 18:11:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 18:11:10,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 18:11:10,447 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 18:11:10,449 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 18:11:10,537 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 18:11:10,542 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 18:11:10,542 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-06 18:11:10,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:11:10 BoogieIcfgContainer [2021-12-06 18:11:10,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 18:11:10,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 18:11:10,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 18:11:10,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 18:11:10,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:11:10" (1/3) ... [2021-12-06 18:11:10,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f772130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:11:10, skipping insertion in model container [2021-12-06 18:11:10,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:11:10" (2/3) ... [2021-12-06 18:11:10,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f772130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:11:10, skipping insertion in model container [2021-12-06 18:11:10,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:11:10" (3/3) ... [2021-12-06 18:11:10,550 INFO L111 eAbstractionObserver]: Analyzing ICFG s3lif.c [2021-12-06 18:11:10,554 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 18:11:10,554 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 18:11:10,589 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 18:11:10,595 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 [2021-12-06 18:11:10,595 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 18:11:10,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 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) [2021-12-06 18:11:10,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 18:11:10,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:10,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:10,612 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:10,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:10,616 INFO L85 PathProgramCache]: Analyzing trace with hash -845640729, now seen corresponding path program 1 times [2021-12-06 18:11:10,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:10,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955658819] [2021-12-06 18:11:10,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:10,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:10,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:11:10,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:10,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955658819] [2021-12-06 18:11:10,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955658819] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:11:10,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:11:10,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 18:11:10,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329966785] [2021-12-06 18:11:10,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:11:10,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 18:11:10,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:10,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 18:11:10,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 18:11:10,768 INFO L87 Difference]: Start difference. First operand has 22 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 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 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2021-12-06 18:11:10,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:11:10,780 INFO L93 Difference]: Finished difference Result 40 states and 56 transitions. [2021-12-06 18:11:10,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 18:11:10,781 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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 13 [2021-12-06 18:11:10,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:11:10,787 INFO L225 Difference]: With dead ends: 40 [2021-12-06 18:11:10,787 INFO L226 Difference]: Without dead ends: 18 [2021-12-06 18:11:10,789 INFO L932 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 [2021-12-06 18:11:10,793 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:11:10,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:11:10,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-06 18:11:10,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-12-06 18:11:10,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 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) [2021-12-06 18:11:10,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-12-06 18:11:10,822 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 13 [2021-12-06 18:11:10,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:11:10,822 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-12-06 18:11:10,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2021-12-06 18:11:10,823 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-12-06 18:11:10,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-06 18:11:10,823 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:10,823 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:10,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 18:11:10,824 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:10,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:10,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1238667739, now seen corresponding path program 1 times [2021-12-06 18:11:10,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:10,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716400652] [2021-12-06 18:11:10,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:10,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:10,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:11:10,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:10,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716400652] [2021-12-06 18:11:10,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716400652] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:11:10,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 18:11:10,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 18:11:10,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332863641] [2021-12-06 18:11:10,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:11:10,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 18:11:10,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:10,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 18:11:10,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-06 18:11:10,907 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-12-06 18:11:10,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:11:10,956 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2021-12-06 18:11:10,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 18:11:10,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2021-12-06 18:11:10,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:11:10,957 INFO L225 Difference]: With dead ends: 36 [2021-12-06 18:11:10,957 INFO L226 Difference]: Without dead ends: 25 [2021-12-06 18:11:10,958 INFO L932 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 [2021-12-06 18:11:10,959 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:11:10,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 11 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:11:10,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-06 18:11:10,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21. [2021-12-06 18:11:10,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.2) internal successors, (24), 20 states have internal predecessors, (24), 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) [2021-12-06 18:11:10,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-12-06 18:11:10,966 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 13 [2021-12-06 18:11:10,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:11:10,967 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-12-06 18:11:10,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-12-06 18:11:10,967 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-12-06 18:11:10,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 18:11:10,968 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:10,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:10,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 18:11:10,969 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:10,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:10,969 INFO L85 PathProgramCache]: Analyzing trace with hash 2001188913, now seen corresponding path program 1 times [2021-12-06 18:11:10,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:10,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556792425] [2021-12-06 18:11:10,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:10,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:11,404 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:11:11,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:11,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556792425] [2021-12-06 18:11:11,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556792425] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:11:11,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988185000] [2021-12-06 18:11:11,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:11,405 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:11:11,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:11:11,408 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:11:11,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 18:11:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:11,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-06 18:11:11,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:11:11,502 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 10 treesize of output 8 [2021-12-06 18:11:11,510 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 [2021-12-06 18:11:11,547 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 14 treesize of output 16 [2021-12-06 18:11:11,681 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 0 case distinctions, treesize of input 32 treesize of output 23 [2021-12-06 18:11:11,768 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 0 case distinctions, treesize of input 36 treesize of output 23 [2021-12-06 18:11:11,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:11:11,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:11:12,100 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:11:12,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 28 [2021-12-06 18:11:12,149 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:11:12,149 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2021-12-06 18:11:12,152 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:12,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-12-06 18:11:12,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:11:12,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988185000] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:11:12,166 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:11:12,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 29 [2021-12-06 18:11:12,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165404275] [2021-12-06 18:11:12,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:11:12,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 18:11:12,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:12,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 18:11:12,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=655, Unknown=0, NotChecked=0, Total=812 [2021-12-06 18:11:12,168 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 29 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) [2021-12-06 18:11:12,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:11:12,591 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2021-12-06 18:11:12,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 18:11:12,592 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 29 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) Word has length 20 [2021-12-06 18:11:12,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:11:12,592 INFO L225 Difference]: With dead ends: 49 [2021-12-06 18:11:12,593 INFO L226 Difference]: Without dead ends: 45 [2021-12-06 18:11:12,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=286, Invalid=1046, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 18:11:12,594 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 39 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:11:12,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 68 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 249 Invalid, 0 Unknown, 29 Unchecked, 0.2s Time] [2021-12-06 18:11:12,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-06 18:11:12,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2021-12-06 18:11:12,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 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) [2021-12-06 18:11:12,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2021-12-06 18:11:12,600 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 20 [2021-12-06 18:11:12,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:11:12,600 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-12-06 18:11:12,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.6551724137931034) internal successors, (48), 29 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) [2021-12-06 18:11:12,600 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2021-12-06 18:11:12,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-06 18:11:12,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:12,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:12,622 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 18:11:12,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:11:12,802 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:12,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:12,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1608161903, now seen corresponding path program 1 times [2021-12-06 18:11:12,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:12,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549555070] [2021-12-06 18:11:12,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:12,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:12,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:12,999 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:11:12,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:12,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549555070] [2021-12-06 18:11:12,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549555070] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:11:12,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586480632] [2021-12-06 18:11:12,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:12,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:11:13,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:11:13,000 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:11:13,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 18:11:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:13,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 18:11:13,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:11:13,054 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 18 treesize of output 14 [2021-12-06 18:11:13,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 18:11:13,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:11:13,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:11:13,119 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2021-12-06 18:11:13,121 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 22 treesize of output 20 [2021-12-06 18:11:13,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:11:13,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586480632] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:11:13,132 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:11:13,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2021-12-06 18:11:13,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730953800] [2021-12-06 18:11:13,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:11:13,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 18:11:13,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:13,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 18:11:13,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-06 18:11:13,134 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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) [2021-12-06 18:11:13,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:11:13,182 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2021-12-06 18:11:13,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 18:11:13,183 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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 20 [2021-12-06 18:11:13,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:11:13,183 INFO L225 Difference]: With dead ends: 48 [2021-12-06 18:11:13,184 INFO L226 Difference]: Without dead ends: 37 [2021-12-06 18:11:13,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-12-06 18:11:13,185 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:11:13,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 56 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:11:13,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-12-06 18:11:13,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2021-12-06 18:11:13,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.21875) internal successors, (39), 32 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) [2021-12-06 18:11:13,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2021-12-06 18:11:13,190 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 20 [2021-12-06 18:11:13,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:11:13,190 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2021-12-06 18:11:13,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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) [2021-12-06 18:11:13,190 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2021-12-06 18:11:13,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 18:11:13,191 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:13,191 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:13,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 18:11:13,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:11:13,393 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:13,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:13,395 INFO L85 PathProgramCache]: Analyzing trace with hash -949569453, now seen corresponding path program 2 times [2021-12-06 18:11:13,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:13,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816054315] [2021-12-06 18:11:13,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:13,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:13,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:11:13,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:13,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816054315] [2021-12-06 18:11:13,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816054315] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:11:13,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506916379] [2021-12-06 18:11:13,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:11:13,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:11:13,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:11:13,489 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:11:13,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 18:11:13,525 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:11:13,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:11:13,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 18:11:13,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:11:13,567 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:11:13,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:11:13,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:11:13,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506916379] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:11:13,590 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:11:13,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-12-06 18:11:13,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812824503] [2021-12-06 18:11:13,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:11:13,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:11:13,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:13,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:11:13,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:11:13,591 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 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) [2021-12-06 18:11:13,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:11:13,653 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2021-12-06 18:11:13,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:11:13,653 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 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 22 [2021-12-06 18:11:13,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:11:13,654 INFO L225 Difference]: With dead ends: 70 [2021-12-06 18:11:13,654 INFO L226 Difference]: Without dead ends: 44 [2021-12-06 18:11:13,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-12-06 18:11:13,655 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 62 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:11:13,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 28 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:11:13,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-12-06 18:11:13,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 30. [2021-12-06 18:11:13,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.1724137931034482) internal successors, (34), 29 states have internal predecessors, (34), 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) [2021-12-06 18:11:13,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-12-06 18:11:13,660 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 22 [2021-12-06 18:11:13,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:11:13,660 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-12-06 18:11:13,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.909090909090909) internal successors, (32), 11 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) [2021-12-06 18:11:13,660 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-12-06 18:11:13,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-06 18:11:13,661 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:13,661 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:13,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-06 18:11:13,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:11:13,863 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:13,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:13,864 INFO L85 PathProgramCache]: Analyzing trace with hash -2105967953, now seen corresponding path program 3 times [2021-12-06 18:11:13,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:13,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972960084] [2021-12-06 18:11:13,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:13,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:13,982 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:11:13,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:13,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972960084] [2021-12-06 18:11:13,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972960084] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:11:13,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175083450] [2021-12-06 18:11:13,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 18:11:13,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:11:13,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:11:13,983 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:11:13,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 18:11:14,023 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 18:11:14,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:11:14,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 18:11:14,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:11:14,077 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:11:14,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:11:14,111 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 18:11:14,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175083450] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:11:14,112 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:11:14,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2021-12-06 18:11:14,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012401978] [2021-12-06 18:11:14,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:11:14,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 18:11:14,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:14,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 18:11:14,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-06 18:11:14,113 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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) [2021-12-06 18:11:14,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:11:14,180 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2021-12-06 18:11:14,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 18:11:14,181 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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 22 [2021-12-06 18:11:14,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:11:14,181 INFO L225 Difference]: With dead ends: 39 [2021-12-06 18:11:14,181 INFO L226 Difference]: Without dead ends: 31 [2021-12-06 18:11:14,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-12-06 18:11:14,182 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 51 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:11:14,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 27 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:11:14,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-06 18:11:14,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2021-12-06 18:11:14,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 27 states have internal predecessors, (31), 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) [2021-12-06 18:11:14,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-12-06 18:11:14,186 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 22 [2021-12-06 18:11:14,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:11:14,186 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-12-06 18:11:14,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 11 states have internal predecessors, (38), 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) [2021-12-06 18:11:14,187 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-12-06 18:11:14,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 18:11:14,187 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:14,187 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:14,207 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 18:11:14,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:11:14,389 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:14,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:14,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1032594067, now seen corresponding path program 4 times [2021-12-06 18:11:14,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:14,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549708713] [2021-12-06 18:11:14,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:14,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:15,266 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:11:15,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:15,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549708713] [2021-12-06 18:11:15,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549708713] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:11:15,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224850832] [2021-12-06 18:11:15,266 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 18:11:15,266 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:11:15,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:11:15,267 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:11:15,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 18:11:15,301 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 18:11:15,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:11:15,303 WARN L261 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 54 conjunts are in the unsatisfiable core [2021-12-06 18:11:15,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:11:15,324 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 [2021-12-06 18:11:15,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:11:15,347 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 14 treesize of output 16 [2021-12-06 18:11:15,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:11:15,381 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 14 treesize of output 16 [2021-12-06 18:11:15,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:11:15,535 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 0 case distinctions, treesize of input 44 treesize of output 27 [2021-12-06 18:11:15,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:11:15,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:11:15,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 35 [2021-12-06 18:11:15,766 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:15,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:11:15,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:11:15,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2021-12-06 18:11:15,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:11:15,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 33 [2021-12-06 18:11:15,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:11:15,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2021-12-06 18:11:15,982 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:11:15,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:11:16,855 INFO L354 Elim1Store]: treesize reduction 52, result has 41.6 percent of original size [2021-12-06 18:11:16,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 554 treesize of output 290 [2021-12-06 18:11:16,985 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:16,986 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 63 [2021-12-06 18:11:19,262 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_4 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_4 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (or (not (= .cse0 4)) (not (= 4 (select v_arrayElimArr_4 .cse1))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_4))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (and (<= (div (+ (- 1) .cse2 .cse3 .cse0) 4) |c_ULTIMATE.start_main_~i~0#1|) (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) (div (+ .cse2 .cse3 .cse0) 4)))))))))) is different from false [2021-12-06 18:11:21,455 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_4 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_4 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (or (not (= .cse0 4)) (not (= 4 (select v_arrayElimArr_4 .cse1))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_4))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (and (<= (+ 2 |c_ULTIMATE.start_main_~i~0#1|) (div (+ .cse2 .cse3 .cse0) 4)) (<= (div (+ (- 1) .cse2 .cse3 .cse0) 4) (+ |c_ULTIMATE.start_main_~i~0#1| 1)))))))))) is different from false [2021-12-06 18:11:21,542 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2021-12-06 18:11:21,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224850832] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:11:21,542 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:11:21,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 51 [2021-12-06 18:11:21,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224469575] [2021-12-06 18:11:21,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:11:21,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-12-06 18:11:21,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:21,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-12-06 18:11:21,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=342, Invalid=2016, Unknown=2, NotChecked=190, Total=2550 [2021-12-06 18:11:21,545 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 51 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 51 states have internal predecessors, (70), 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) [2021-12-06 18:11:23,802 WARN L838 $PredicateComparison]: unable to prove that (and (= |c_ULTIMATE.start_main_~a~0#1.offset| 0) (= |c_ULTIMATE.start_main_~i~0#1| 0) (= (select (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|) |c_ULTIMATE.start_main_~#sum~0#1.offset|) 0) (forall ((v_arrayElimArr_4 (Array Int Int))) (let ((.cse0 (select v_arrayElimArr_4 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (or (not (= .cse0 4)) (not (= 4 (select v_arrayElimArr_4 .cse1))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_4))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (and (<= (+ 2 |c_ULTIMATE.start_main_~i~0#1|) (div (+ .cse2 .cse3 .cse0) 4)) (<= (div (+ (- 1) .cse2 .cse3 .cse0) 4) (+ |c_ULTIMATE.start_main_~i~0#1| 1)))))))))) (< (+ |c_ULTIMATE.start_main_~a~0#1.base| 1) |c_ULTIMATE.start_main_~#sum~0#1.base|) (let ((.cse15 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|))) (let ((.cse6 (select .cse15 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse14 (store .cse15 |c_ULTIMATE.start_main_~a~0#1.offset| (+ .cse6 3))) (.cse12 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (let ((.cse7 (select .cse14 .cse12))) (or (not (= .cse6 1)) (not (= .cse7 1)) (= (* 4 c_~N~0) (let ((.cse13 (store .cse14 .cse12 (+ .cse7 3)))) (let ((.cse9 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse13))) (let ((.cse10 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse8 (select .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse11 (select .cse13 |c_ULTIMATE.start_main_~a~0#1.offset|))) (+ .cse8 (select (select (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse10 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse8 .cse11))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse12) .cse11)))))) (< |c_ULTIMATE.start_main_~i~0#1| c_~N~0))))))) is different from false [2021-12-06 18:11:28,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:11:28,241 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2021-12-06 18:11:28,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 18:11:28,241 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 51 states have internal predecessors, (70), 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 27 [2021-12-06 18:11:28,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:11:28,242 INFO L225 Difference]: With dead ends: 64 [2021-12-06 18:11:28,242 INFO L226 Difference]: Without dead ends: 60 [2021-12-06 18:11:28,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1165 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=516, Invalid=2799, Unknown=3, NotChecked=342, Total=3660 [2021-12-06 18:11:28,244 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 44 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:11:28,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 111 Invalid, 838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 597 Invalid, 0 Unknown, 108 Unchecked, 1.8s Time] [2021-12-06 18:11:28,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-06 18:11:28,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 41. [2021-12-06 18:11:28,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.175) internal successors, (47), 40 states have internal predecessors, (47), 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) [2021-12-06 18:11:28,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2021-12-06 18:11:28,249 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 27 [2021-12-06 18:11:28,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:11:28,249 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2021-12-06 18:11:28,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.3725490196078431) internal successors, (70), 51 states have internal predecessors, (70), 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) [2021-12-06 18:11:28,250 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2021-12-06 18:11:28,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-06 18:11:28,250 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:28,250 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:28,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-06 18:11:28,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 18:11:28,451 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:28,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:28,451 INFO L85 PathProgramCache]: Analyzing trace with hash -774428629, now seen corresponding path program 1 times [2021-12-06 18:11:28,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:28,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551125657] [2021-12-06 18:11:28,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:28,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:28,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:29,108 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 18:11:29,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:29,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551125657] [2021-12-06 18:11:29,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551125657] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:11:29,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496610070] [2021-12-06 18:11:29,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:29,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:11:29,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:11:29,110 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:11:29,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 18:11:29,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:29,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 18:11:29,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:11:29,235 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 13 treesize of output 9 [2021-12-06 18:11:29,400 INFO L354 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2021-12-06 18:11:29,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-12-06 18:11:29,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-06 18:11:29,541 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 18:11:29,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:11:29,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-12-06 18:11:29,830 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 28 treesize of output 24 [2021-12-06 18:11:29,878 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 18:11:29,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496610070] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:11:29,879 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:11:29,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 21 [2021-12-06 18:11:29,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655710070] [2021-12-06 18:11:29,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:11:29,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 18:11:29,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:29,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 18:11:29,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-12-06 18:11:29,881 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:11:31,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:11:31,026 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2021-12-06 18:11:31,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 18:11:31,027 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-06 18:11:31,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:11:31,028 INFO L225 Difference]: With dead ends: 62 [2021-12-06 18:11:31,028 INFO L226 Difference]: Without dead ends: 49 [2021-12-06 18:11:31,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2021-12-06 18:11:31,030 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 15 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:11:31,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 74 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 18:11:31,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-12-06 18:11:31,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2021-12-06 18:11:31,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 42 states have internal predecessors, (49), 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) [2021-12-06 18:11:31,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2021-12-06 18:11:31,038 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 27 [2021-12-06 18:11:31,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:11:31,038 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2021-12-06 18:11:31,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 21 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:11:31,038 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2021-12-06 18:11:31,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 18:11:31,039 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:31,040 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:31,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-06 18:11:31,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-06 18:11:31,242 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:31,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:31,243 INFO L85 PathProgramCache]: Analyzing trace with hash -132219249, now seen corresponding path program 5 times [2021-12-06 18:11:31,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:31,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179238338] [2021-12-06 18:11:31,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:31,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:31,421 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 18:11:31,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:31,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179238338] [2021-12-06 18:11:31,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179238338] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:11:31,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584090126] [2021-12-06 18:11:31,421 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 18:11:31,421 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:11:31,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:11:31,422 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:11:31,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 18:11:31,469 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-12-06 18:11:31,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:11:31,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 18:11:31,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:11:31,712 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 18:11:31,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:11:31,831 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 18:11:31,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584090126] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:11:31,831 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:11:31,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2021-12-06 18:11:31,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862651165] [2021-12-06 18:11:31,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:11:31,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 18:11:31,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:31,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 18:11:31,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:11:31,833 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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) [2021-12-06 18:11:32,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:11:32,257 INFO L93 Difference]: Finished difference Result 86 states and 97 transitions. [2021-12-06 18:11:32,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 18:11:32,258 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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 29 [2021-12-06 18:11:32,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:11:32,258 INFO L225 Difference]: With dead ends: 86 [2021-12-06 18:11:32,258 INFO L226 Difference]: Without dead ends: 53 [2021-12-06 18:11:32,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-12-06 18:11:32,259 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 68 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:11:32,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 31 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:11:32,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-12-06 18:11:32,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2021-12-06 18:11:32,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.131578947368421) internal successors, (43), 38 states have internal predecessors, (43), 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) [2021-12-06 18:11:32,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-12-06 18:11:32,265 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 29 [2021-12-06 18:11:32,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:11:32,265 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-12-06 18:11:32,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 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) [2021-12-06 18:11:32,266 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-12-06 18:11:32,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 18:11:32,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:32,266 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:32,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 18:11:32,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:11:32,468 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:32,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:32,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1292373713, now seen corresponding path program 6 times [2021-12-06 18:11:32,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:32,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910159976] [2021-12-06 18:11:32,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:32,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:32,671 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 18:11:32,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:32,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910159976] [2021-12-06 18:11:32,671 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910159976] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:11:32,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518842108] [2021-12-06 18:11:32,671 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 18:11:32,671 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:11:32,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:11:32,672 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:11:32,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 18:11:32,721 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-12-06 18:11:32,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:11:32,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 18:11:32,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:11:32,993 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 18:11:32,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:11:33,153 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 18:11:33,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518842108] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:11:33,154 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:11:33,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2021-12-06 18:11:33,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065025059] [2021-12-06 18:11:33,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:11:33,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 18:11:33,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:33,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 18:11:33,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-12-06 18:11:33,155 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 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) [2021-12-06 18:11:33,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:11:33,618 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2021-12-06 18:11:33,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 18:11:33,619 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 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 29 [2021-12-06 18:11:33,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:11:33,620 INFO L225 Difference]: With dead ends: 48 [2021-12-06 18:11:33,620 INFO L226 Difference]: Without dead ends: 38 [2021-12-06 18:11:33,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-12-06 18:11:33,621 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 86 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 18:11:33,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 18 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 18:11:33,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-12-06 18:11:33,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2021-12-06 18:11:33,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 34 states have internal predecessors, (38), 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) [2021-12-06 18:11:33,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2021-12-06 18:11:33,625 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 29 [2021-12-06 18:11:33,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:11:33,625 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-12-06 18:11:33,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 14 states have internal predecessors, (47), 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) [2021-12-06 18:11:33,626 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2021-12-06 18:11:33,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 18:11:33,626 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:11:33,626 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:11:33,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 18:11:33,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 18:11:33,828 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:11:33,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:11:33,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1250534543, now seen corresponding path program 7 times [2021-12-06 18:11:33,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:11:33,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243161359] [2021-12-06 18:11:33,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:11:33,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:11:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:37,327 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:11:37,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:11:37,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243161359] [2021-12-06 18:11:37,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243161359] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:11:37,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532617137] [2021-12-06 18:11:37,327 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 18:11:37,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:11:37,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:11:37,328 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:11:37,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 18:11:37,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:11:37,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 77 conjunts are in the unsatisfiable core [2021-12-06 18:11:37,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:11:37,401 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 10 treesize of output 8 [2021-12-06 18:11:37,411 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 [2021-12-06 18:11:37,428 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 14 treesize of output 16 [2021-12-06 18:11:37,488 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 14 treesize of output 16 [2021-12-06 18:11:37,654 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 14 treesize of output 16 [2021-12-06 18:11:38,255 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 0 case distinctions, treesize of input 44 treesize of output 27 [2021-12-06 18:11:38,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:11:38,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 40 [2021-12-06 18:11:39,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:11:39,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:11:39,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:11:39,303 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 0 case distinctions, treesize of input 61 treesize of output 50 [2021-12-06 18:11:39,803 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:39,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:11:39,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:11:39,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:11:39,811 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 54 [2021-12-06 18:11:40,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:11:40,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:11:40,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:11:40,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:40,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:11:40,257 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 4 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 52 [2021-12-06 18:11:40,685 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 0 case distinctions, treesize of input 63 treesize of output 48 [2021-12-06 18:11:41,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 39 [2021-12-06 18:11:41,142 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:11:41,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:11:47,411 INFO L354 Elim1Store]: treesize reduction 476, result has 26.2 percent of original size [2021-12-06 18:11:47,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 6 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 9 new quantified variables, introduced 39 case distinctions, treesize of input 19688 treesize of output 6158 [2021-12-06 18:11:47,514 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-12-06 18:11:48,253 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:48,254 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:48,255 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:48,255 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-12-06 18:11:48,348 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:48,349 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:48,350 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:48,350 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 27 [2021-12-06 18:11:48,393 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-12-06 18:11:48,891 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:48,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:48,893 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:48,893 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 29 [2021-12-06 18:11:48,911 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:48,912 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:48,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:48,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 183 [2021-12-06 18:11:48,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:48,978 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:48,979 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:48,979 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 198 treesize of output 152 [2021-12-06 18:11:49,038 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:49,039 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:49,040 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:11:49,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 23 [2021-12-06 18:11:52,113 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_10 (Array Int Int))) (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (.cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (or (not (= (select v_arrayElimArr_10 |c_ULTIMATE.start_main_~a~0#1.offset|) 4)) (not (= (select v_arrayElimArr_10 .cse0) 4)) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_10))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse1 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse2 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6))) (let ((.cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0))) (and (<= (div (+ .cse1 3 .cse2 .cse3) 4) |c_ULTIMATE.start_main_~i~0#1|) (<= (+ |c_ULTIMATE.start_main_~i~0#1| 1) (div (+ .cse1 .cse2 .cse3 4) 4)))))))) (not (= (select v_arrayElimArr_10 .cse6) 4))))) is different from false [2021-12-06 18:11:55,340 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_10 (Array Int Int))) (let ((.cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (.cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (or (not (= (select v_arrayElimArr_10 |c_ULTIMATE.start_main_~a~0#1.offset|) 4)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_10))) (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))) (and (<= (div (+ .cse0 3 .cse1 .cse2) 4) (+ |c_ULTIMATE.start_main_~i~0#1| 1)) (<= (+ 2 |c_ULTIMATE.start_main_~i~0#1|) (div (+ .cse0 .cse1 .cse2 4) 4)))))))) (not (= (select v_arrayElimArr_10 .cse5) 4)) (not (= (select v_arrayElimArr_10 .cse6) 4))))) is different from false [2021-12-06 18:11:58,711 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_10 (Array Int Int))) (let ((.cse5 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (.cse6 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (or (not (= (select v_arrayElimArr_10 |c_ULTIMATE.start_main_~a~0#1.offset|) 4)) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_10))) (let ((.cse4 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse1 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse0 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse6))) (let ((.cse2 (select (select (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse0 .cse1 4))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse5))) (and (<= (div (+ .cse0 3 .cse1 .cse2) 4) (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (<= (+ 3 |c_ULTIMATE.start_main_~i~0#1|) (div (+ .cse0 .cse1 .cse2 4) 4)))))))) (not (= (select v_arrayElimArr_10 .cse5) 4)) (not (= (select v_arrayElimArr_10 .cse6) 4))))) is different from false [2021-12-06 18:11:58,960 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2021-12-06 18:11:58,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532617137] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:11:58,960 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:11:58,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 24] total 65 [2021-12-06 18:11:58,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816212916] [2021-12-06 18:11:58,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:11:58,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-12-06 18:11:58,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:11:58,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-12-06 18:11:58,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=473, Invalid=3318, Unknown=3, NotChecked=366, Total=4160 [2021-12-06 18:11:58,964 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand has 65 states, 65 states have (on average 1.3384615384615384) internal successors, (87), 65 states have internal predecessors, (87), 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) [2021-12-06 18:13:19,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:13:19,886 INFO L93 Difference]: Finished difference Result 83 states and 95 transitions. [2021-12-06 18:13:19,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-06 18:13:19,886 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.3384615384615384) internal successors, (87), 65 states have internal predecessors, (87), 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 34 [2021-12-06 18:13:19,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:13:19,887 INFO L225 Difference]: With dead ends: 83 [2021-12-06 18:13:19,887 INFO L226 Difference]: Without dead ends: 66 [2021-12-06 18:13:19,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 28 SyntacticMatches, 7 SemanticMatches, 73 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1875 ImplicationChecksByTransitivity, 94.8s TimeCoverageRelationStatistics Valid=659, Invalid=4443, Unknown=22, NotChecked=426, Total=5550 [2021-12-06 18:13:19,889 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 49 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 950 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 1308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 194 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-06 18:13:19,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 133 Invalid, 1308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 950 Invalid, 0 Unknown, 194 Unchecked, 5.1s Time] [2021-12-06 18:13:19,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-12-06 18:13:19,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2021-12-06 18:13:19,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1372549019607843) internal successors, (58), 51 states have internal predecessors, (58), 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) [2021-12-06 18:13:19,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2021-12-06 18:13:19,895 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 34 [2021-12-06 18:13:19,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:13:19,895 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2021-12-06 18:13:19,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.3384615384615384) internal successors, (87), 65 states have internal predecessors, (87), 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) [2021-12-06 18:13:19,895 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2021-12-06 18:13:19,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-06 18:13:19,896 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:13:19,896 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:13:19,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-06 18:13:20,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:20,097 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:13:20,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:13:20,097 INFO L85 PathProgramCache]: Analyzing trace with hash 2033315503, now seen corresponding path program 2 times [2021-12-06 18:13:20,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:13:20,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76308871] [2021-12-06 18:13:20,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:20,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:13:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:20,683 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 18:13:20,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:20,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76308871] [2021-12-06 18:13:20,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76308871] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:13:20,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912464979] [2021-12-06 18:13:20,684 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:13:20,684 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:20,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:13:20,685 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:13:20,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 18:13:20,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:13:20,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:13:20,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 18:13:20,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:13:21,076 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 13 treesize of output 9 [2021-12-06 18:13:21,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:21,365 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 25 treesize of output 24 [2021-12-06 18:13:21,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:21,553 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 25 treesize of output 24 [2021-12-06 18:13:21,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 18:13:21,764 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 18:13:21,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:13:22,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 14 [2021-12-06 18:13:22,249 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 28 treesize of output 24 [2021-12-06 18:13:22,342 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 18:13:22,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912464979] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:13:22,342 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:13:22,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 19 [2021-12-06 18:13:22,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525700772] [2021-12-06 18:13:22,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:13:22,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 18:13:22,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:13:22,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 18:13:22,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2021-12-06 18:13:22,344 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 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) [2021-12-06 18:13:23,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:13:23,760 INFO L93 Difference]: Finished difference Result 75 states and 84 transitions. [2021-12-06 18:13:23,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 18:13:23,761 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 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 34 [2021-12-06 18:13:23,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:13:23,762 INFO L225 Difference]: With dead ends: 75 [2021-12-06 18:13:23,762 INFO L226 Difference]: Without dead ends: 60 [2021-12-06 18:13:23,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 58 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2021-12-06 18:13:23,763 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 13 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 18:13:23,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 88 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 18:13:23,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-06 18:13:23,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2021-12-06 18:13:23,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) [2021-12-06 18:13:23,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2021-12-06 18:13:23,769 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 34 [2021-12-06 18:13:23,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:13:23,769 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2021-12-06 18:13:23,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.736842105263158) internal successors, (52), 19 states have internal predecessors, (52), 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) [2021-12-06 18:13:23,770 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2021-12-06 18:13:23,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 18:13:23,770 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:13:23,771 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:13:23,797 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 18:13:23,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:23,972 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:13:23,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:13:23,973 INFO L85 PathProgramCache]: Analyzing trace with hash 880380819, now seen corresponding path program 8 times [2021-12-06 18:13:23,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:13:23,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502015327] [2021-12-06 18:13:23,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:23,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:13:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:24,395 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 18:13:24,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:24,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502015327] [2021-12-06 18:13:24,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502015327] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:13:24,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605227465] [2021-12-06 18:13:24,395 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 18:13:24,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:24,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:13:24,396 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:13:24,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 18:13:24,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 18:13:24,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:13:24,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 18:13:24,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:13:25,053 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 18:13:25,054 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:13:25,313 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 18:13:25,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605227465] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:13:25,313 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:13:25,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2021-12-06 18:13:25,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221911964] [2021-12-06 18:13:25,314 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:13:25,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 18:13:25,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:13:25,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 18:13:25,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-12-06 18:13:25,315 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:26,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:13:26,136 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2021-12-06 18:13:26,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 18:13:26,137 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-12-06 18:13:26,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:13:26,137 INFO L225 Difference]: With dead ends: 97 [2021-12-06 18:13:26,138 INFO L226 Difference]: Without dead ends: 62 [2021-12-06 18:13:26,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2021-12-06 18:13:26,139 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 118 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 18:13:26,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 32 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 18:13:26,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-06 18:13:26,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 48. [2021-12-06 18:13:26,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 47 states have internal predecessors, (52), 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) [2021-12-06 18:13:26,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-12-06 18:13:26,145 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 36 [2021-12-06 18:13:26,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:13:26,146 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-12-06 18:13:26,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 18:13:26,146 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-12-06 18:13:26,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-06 18:13:26,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:13:26,146 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:13:26,169 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 18:13:26,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:26,348 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:13:26,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:13:26,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1466624367, now seen corresponding path program 9 times [2021-12-06 18:13:26,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:13:26,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283462210] [2021-12-06 18:13:26,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:26,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:13:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:26,787 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 18:13:26,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:26,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283462210] [2021-12-06 18:13:26,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283462210] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:13:26,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502579252] [2021-12-06 18:13:26,787 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 18:13:26,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:26,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:13:26,788 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:13:26,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 18:13:26,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-06 18:13:26,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:13:26,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 18:13:26,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:13:27,491 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 18:13:27,491 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:13:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 18:13:27,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502579252] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:13:27,804 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:13:27,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2021-12-06 18:13:27,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125864400] [2021-12-06 18:13:27,804 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:13:27,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 18:13:27,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:13:27,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 18:13:27,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-12-06 18:13:27,805 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 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) [2021-12-06 18:13:29,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:13:29,164 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2021-12-06 18:13:29,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 18:13:29,165 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 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 [2021-12-06 18:13:29,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:13:29,165 INFO L225 Difference]: With dead ends: 57 [2021-12-06 18:13:29,165 INFO L226 Difference]: Without dead ends: 45 [2021-12-06 18:13:29,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 64 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2021-12-06 18:13:29,166 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 60 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:13:29,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 36 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 18:13:29,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-06 18:13:29,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2021-12-06 18:13:29,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 41 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) [2021-12-06 18:13:29,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2021-12-06 18:13:29,173 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 36 [2021-12-06 18:13:29,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:13:29,173 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2021-12-06 18:13:29,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 17 states have internal predecessors, (50), 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) [2021-12-06 18:13:29,174 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2021-12-06 18:13:29,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 18:13:29,174 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:13:29,174 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:13:29,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-12-06 18:13:29,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 18:13:29,376 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:13:29,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:13:29,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1118330549, now seen corresponding path program 10 times [2021-12-06 18:13:29,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:13:29,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528189269] [2021-12-06 18:13:29,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:13:29,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:13:29,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:13:36,516 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 1 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:13:36,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:13:36,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528189269] [2021-12-06 18:13:36,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528189269] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:13:36,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [375588301] [2021-12-06 18:13:36,517 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 18:13:36,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:13:36,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:13:36,518 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:13:36,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 18:13:36,573 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 18:13:36,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:13:36,576 WARN L261 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 92 conjunts are in the unsatisfiable core [2021-12-06 18:13:36,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:13:36,597 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 [2021-12-06 18:13:36,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:36,858 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 14 treesize of output 16 [2021-12-06 18:13:37,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:37,137 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 14 treesize of output 16 [2021-12-06 18:13:37,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:37,413 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 14 treesize of output 16 [2021-12-06 18:13:37,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:37,722 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 14 treesize of output 16 [2021-12-06 18:13:39,112 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:39,113 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 0 case distinctions, treesize of input 44 treesize of output 27 [2021-12-06 18:13:40,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:40,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:40,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 42 [2021-12-06 18:13:41,203 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:41,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:41,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:41,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:41,216 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 0 case distinctions, treesize of input 60 treesize of output 49 [2021-12-06 18:13:42,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:42,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:42,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:42,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:42,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:42,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:42,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:42,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 59 [2021-12-06 18:13:43,500 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:13:43,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:43,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:43,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:43,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:43,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:43,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:43,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:43,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 63 [2021-12-06 18:13:44,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:44,387 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:44,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:44,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:44,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:44,399 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:13:44,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:44,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:44,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:44,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 61 [2021-12-06 18:13:45,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:45,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:45,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:45,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:45,416 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:45,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:45,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:45,424 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:13:45,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:45,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 63 [2021-12-06 18:13:46,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:46,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 53 [2021-12-06 18:13:46,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:13:46,906 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 0 case distinctions, treesize of input 70 treesize of output 38 [2021-12-06 18:13:47,231 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:13:47,231 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:14:14,624 WARN L227 SmtUtils]: Spent 6.34s on a formula simplification. DAG size of input: 793 DAG size of output: 324 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-06 18:14:14,626 INFO L354 Elim1Store]: treesize reduction 3907, result has 18.3 percent of original size [2021-12-06 18:14:14,631 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 23 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 27 new quantified variables, introduced 190 case distinctions, treesize of input 4273982 treesize of output 979768 [2021-12-06 18:14:25,032 WARN L227 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 2265 DAG size of output: 2268 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-06 18:14:25,068 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,069 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,070 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 41 [2021-12-06 18:14:25,157 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,158 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,159 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 41 [2021-12-06 18:14:25,216 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,217 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,218 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 3882 treesize of output 3404 [2021-12-06 18:14:25,303 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,304 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,305 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 37 [2021-12-06 18:14:25,392 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,393 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,394 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:25,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 39 [2021-12-06 18:14:27,438 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:27,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:27,439 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:27,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:27,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:27,440 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:27,441 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 37 [2021-12-06 18:14:27,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:27,474 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:27,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:27,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:27,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:27,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:27,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 677 treesize of output 503 [2021-12-06 18:14:28,185 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,186 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,187 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,188 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 39 [2021-12-06 18:14:28,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,234 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,235 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,236 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 37 [2021-12-06 18:14:28,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,274 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,275 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,276 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 37 [2021-12-06 18:14:28,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,308 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,309 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,310 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 663 treesize of output 497 [2021-12-06 18:14:28,340 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,341 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,342 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,343 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 67 [2021-12-06 18:14:28,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,372 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,373 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 35 [2021-12-06 18:14:28,811 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,812 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,812 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,812 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,813 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,814 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 35 [2021-12-06 18:14:28,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,932 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,933 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,934 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 49 [2021-12-06 18:14:28,997 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,998 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:28,999 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,000 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 37 [2021-12-06 18:14:29,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,033 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,034 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,035 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,036 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 89 [2021-12-06 18:14:29,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,176 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,177 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,178 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 35 [2021-12-06 18:14:29,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,210 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,211 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,212 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 39 [2021-12-06 18:14:29,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,240 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,241 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,242 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 367 treesize of output 297 [2021-12-06 18:14:29,363 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,364 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,365 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,366 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 335 treesize of output 273 [2021-12-06 18:14:29,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,425 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,426 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,427 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:14:29,427 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 284 treesize of output 252 [2021-12-06 18:14:34,939 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_26 (Array Int Int)) (~N~0 Int)) (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (.cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (or (not (= 4 (select v_arrayElimArr_26 .cse0))) (not (= (select v_arrayElimArr_26 .cse1) 4)) (not (= (select v_arrayElimArr_26 |c_ULTIMATE.start_main_~a~0#1.offset|) 4)) (not (= (select v_arrayElimArr_26 .cse2) 4)) (< (+ 2 |c_ULTIMATE.start_main_~i~0#1|) ~N~0) (= (* 4 ~N~0) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_26))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse7 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse6 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ 4 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (let ((.cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ 4 .cse6 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (+ .cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 4 .cse6 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) 4 .cse6 .cse7))))))) (<= ~N~0 (+ |c_ULTIMATE.start_main_~i~0#1| 1))))) is different from false [2021-12-06 18:14:35,490 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_26 (Array Int Int)) (~N~0 Int)) (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (.cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (or (not (= 4 (select v_arrayElimArr_26 .cse0))) (not (= (select v_arrayElimArr_26 .cse1) 4)) (not (= (select v_arrayElimArr_26 |c_ULTIMATE.start_main_~a~0#1.offset|) 4)) (not (= (select v_arrayElimArr_26 .cse2) 4)) (<= ~N~0 (+ 2 |c_ULTIMATE.start_main_~i~0#1|)) (= (* 4 ~N~0) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_26))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse7 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse6 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ 4 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (let ((.cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ 4 .cse6 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (+ .cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 4 .cse6 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) 4 .cse6 .cse7))))))) (< (+ 3 |c_ULTIMATE.start_main_~i~0#1|) ~N~0)))) is different from false [2021-12-06 18:14:36,094 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_26 (Array Int Int)) (~N~0 Int)) (let ((.cse0 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) (.cse1 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (.cse2 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (or (not (= 4 (select v_arrayElimArr_26 .cse0))) (<= ~N~0 (+ 3 |c_ULTIMATE.start_main_~i~0#1|)) (not (= (select v_arrayElimArr_26 .cse1) 4)) (not (= (select v_arrayElimArr_26 |c_ULTIMATE.start_main_~a~0#1.offset|) 4)) (not (= (select v_arrayElimArr_26 .cse2) 4)) (= (* 4 ~N~0) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_26))) (let ((.cse5 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse7 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse6 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ 4 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse2))) (let ((.cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ 4 .cse6 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse1))) (+ .cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 4 .cse6 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) .cse0) 4 .cse6 .cse7))))))) (< (+ |c_ULTIMATE.start_main_~i~0#1| 4) ~N~0)))) is different from false [2021-12-06 18:14:36,402 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 15 not checked. [2021-12-06 18:14:36,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [375588301] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:14:36,402 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:14:36,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 30, 30] total 86 [2021-12-06 18:14:36,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940152534] [2021-12-06 18:14:36,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:14:36,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2021-12-06 18:14:36,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:14:36,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2021-12-06 18:14:36,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=683, Invalid=6082, Unknown=53, NotChecked=492, Total=7310 [2021-12-06 18:14:36,405 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand has 86 states, 86 states have (on average 1.2790697674418605) internal successors, (110), 86 states have internal predecessors, (110), 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) [2021-12-06 18:16:23,856 WARN L227 SmtUtils]: Spent 35.30s on a formula simplification. DAG size of input: 207 DAG size of output: 196 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 18:17:19,532 WARN L227 SmtUtils]: Spent 40.24s on a formula simplification. DAG size of input: 210 DAG size of output: 197 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 18:18:42,481 WARN L227 SmtUtils]: Spent 1.05m on a formula simplification. DAG size of input: 221 DAG size of output: 207 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 18:19:44,378 WARN L227 SmtUtils]: Spent 32.01s on a formula simplification. DAG size of input: 284 DAG size of output: 72 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 18:20:21,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:20:21,176 INFO L93 Difference]: Finished difference Result 115 states and 132 transitions. [2021-12-06 18:20:21,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2021-12-06 18:20:21,177 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 86 states have (on average 1.2790697674418605) internal successors, (110), 86 states have internal predecessors, (110), 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 [2021-12-06 18:20:21,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:20:21,178 INFO L225 Difference]: With dead ends: 115 [2021-12-06 18:20:21,178 INFO L226 Difference]: Without dead ends: 95 [2021-12-06 18:20:21,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 30 SyntacticMatches, 4 SemanticMatches, 130 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5312 ImplicationChecksByTransitivity, 370.4s TimeCoverageRelationStatistics Valid=1758, Invalid=14698, Unknown=68, NotChecked=768, Total=17292 [2021-12-06 18:20:21,185 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 119 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 476 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 332 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-12-06 18:20:21,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 154 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [476 Valid, 1554 Invalid, 0 Unknown, 332 Unchecked, 11.4s Time] [2021-12-06 18:20:21,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-12-06 18:20:21,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 65. [2021-12-06 18:20:21,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.140625) internal successors, (73), 64 states have internal predecessors, (73), 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) [2021-12-06 18:20:21,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2021-12-06 18:20:21,194 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 41 [2021-12-06 18:20:21,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:20:21,194 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2021-12-06 18:20:21,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 86 states have (on average 1.2790697674418605) internal successors, (110), 86 states have internal predecessors, (110), 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) [2021-12-06 18:20:21,195 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2021-12-06 18:20:21,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-06 18:20:21,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:20:21,195 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:20:21,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 18:20:21,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 18:20:21,397 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:20:21,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:20:21,398 INFO L85 PathProgramCache]: Analyzing trace with hash 97262195, now seen corresponding path program 3 times [2021-12-06 18:20:21,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:20:21,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523797475] [2021-12-06 18:20:21,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:20:21,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:20:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:20:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 32 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-06 18:20:22,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:20:22,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523797475] [2021-12-06 18:20:22,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523797475] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:20:22,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [570739098] [2021-12-06 18:20:22,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 18:20:22,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:20:22,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:20:22,502 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:20:22,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-06 18:20:22,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-12-06 18:20:22,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:20:22,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-06 18:20:22,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:20:22,596 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 15 treesize of output 11 [2021-12-06 18:20:23,249 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-12-06 18:20:23,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 34 [2021-12-06 18:20:23,950 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-12-06 18:20:23,950 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 48 [2021-12-06 18:20:24,422 INFO L354 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2021-12-06 18:20:24,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 38 [2021-12-06 18:20:25,102 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 18:20:25,102 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 32 [2021-12-06 18:20:26,609 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 23 proven. 22 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 18:20:26,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:21:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 23 proven. 20 refuted. 2 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 18:21:39,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [570739098] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:21:39,279 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:21:39,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 19, 18] total 48 [2021-12-06 18:21:39,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943362867] [2021-12-06 18:21:39,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:21:39,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-06 18:21:39,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:21:39,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-06 18:21:39,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=421, Invalid=1812, Unknown=23, NotChecked=0, Total=2256 [2021-12-06 18:21:39,281 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand has 48 states, 48 states have (on average 1.8333333333333333) internal successors, (88), 48 states have internal predecessors, (88), 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) [2021-12-06 18:22:08,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:08,428 INFO L93 Difference]: Finished difference Result 92 states and 103 transitions. [2021-12-06 18:22:08,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-06 18:22:08,428 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.8333333333333333) internal successors, (88), 48 states have internal predecessors, (88), 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 [2021-12-06 18:22:08,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:08,429 INFO L225 Difference]: With dead ends: 92 [2021-12-06 18:22:08,429 INFO L226 Difference]: Without dead ends: 72 [2021-12-06 18:22:08,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1554 ImplicationChecksByTransitivity, 102.1s TimeCoverageRelationStatistics Valid=868, Invalid=3930, Unknown=32, NotChecked=0, Total=4830 [2021-12-06 18:22:08,432 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 21 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:08,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 68 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 210 Invalid, 0 Unknown, 137 Unchecked, 0.8s Time] [2021-12-06 18:22:08,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-06 18:22:08,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2021-12-06 18:22:08,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 67 states have internal predecessors, (77), 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) [2021-12-06 18:22:08,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 77 transitions. [2021-12-06 18:22:08,441 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 77 transitions. Word has length 41 [2021-12-06 18:22:08,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:08,441 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 77 transitions. [2021-12-06 18:22:08,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.8333333333333333) internal successors, (88), 48 states have internal predecessors, (88), 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) [2021-12-06 18:22:08,441 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 77 transitions. [2021-12-06 18:22:08,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-06 18:22:08,442 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:08,442 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:08,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-06 18:22:08,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 18:22:08,643 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:22:08,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:08,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1027067351, now seen corresponding path program 11 times [2021-12-06 18:22:08,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:22:08,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530792315] [2021-12-06 18:22:08,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:08,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:22:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:09,214 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 18:22:09,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:22:09,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530792315] [2021-12-06 18:22:09,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530792315] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:22:09,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542128383] [2021-12-06 18:22:09,214 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 18:22:09,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:22:09,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:22:09,215 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:22:09,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-06 18:22:09,442 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-12-06 18:22:09,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:22:09,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 18:22:09,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:10,270 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 18:22:10,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:22:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 18:22:10,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1542128383] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:22:10,587 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:22:10,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2021-12-06 18:22:10,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895971038] [2021-12-06 18:22:10,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:22:10,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 18:22:10,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:22:10,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 18:22:10,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-12-06 18:22:10,588 INFO L87 Difference]: Start difference. First operand 68 states and 77 transitions. Second operand has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 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) [2021-12-06 18:22:11,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:11,718 INFO L93 Difference]: Finished difference Result 109 states and 121 transitions. [2021-12-06 18:22:11,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 18:22:11,718 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 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 43 [2021-12-06 18:22:11,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:11,719 INFO L225 Difference]: With dead ends: 109 [2021-12-06 18:22:11,719 INFO L226 Difference]: Without dead ends: 62 [2021-12-06 18:22:11,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=161, Invalid=439, Unknown=0, NotChecked=0, Total=600 [2021-12-06 18:22:11,720 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 98 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:11,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 42 Invalid, 303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 18:22:11,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-06 18:22:11,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 50. [2021-12-06 18:22:11,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.1224489795918366) internal successors, (55), 49 states have internal predecessors, (55), 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) [2021-12-06 18:22:11,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2021-12-06 18:22:11,727 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 43 [2021-12-06 18:22:11,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:11,728 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2021-12-06 18:22:11,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.5) internal successors, (50), 20 states have internal predecessors, (50), 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) [2021-12-06 18:22:11,728 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2021-12-06 18:22:11,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-06 18:22:11,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:11,728 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:11,757 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-12-06 18:22:11,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 18:22:11,930 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:22:11,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:11,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1824213007, now seen corresponding path program 12 times [2021-12-06 18:22:11,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:22:11,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798745239] [2021-12-06 18:22:11,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:11,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:22:11,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:12,487 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 9 proven. 32 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 18:22:12,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:22:12,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798745239] [2021-12-06 18:22:12,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798745239] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:22:12,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912811573] [2021-12-06 18:22:12,488 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 18:22:12,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:22:12,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:22:12,489 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:22:12,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-06 18:22:12,589 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-12-06 18:22:12,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:22:12,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 18:22:12,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 22 proven. 29 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-06 18:22:13,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:22:13,724 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 22 proven. 29 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-06 18:22:13,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912811573] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:22:13,724 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:22:13,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2021-12-06 18:22:13,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832276236] [2021-12-06 18:22:13,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:22:13,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-06 18:22:13,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:22:13,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-06 18:22:13,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-12-06 18:22:13,726 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 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) [2021-12-06 18:22:15,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:22:15,319 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2021-12-06 18:22:15,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 18:22:15,320 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 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 46 [2021-12-06 18:22:15,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:22:15,321 INFO L225 Difference]: With dead ends: 61 [2021-12-06 18:22:15,321 INFO L226 Difference]: Without dead ends: 57 [2021-12-06 18:22:15,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2021-12-06 18:22:15,322 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 90 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:22:15,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 36 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-06 18:22:15,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-06 18:22:15,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2021-12-06 18:22:15,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.1176470588235294) internal successors, (57), 51 states have internal predecessors, (57), 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) [2021-12-06 18:22:15,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2021-12-06 18:22:15,329 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 46 [2021-12-06 18:22:15,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:22:15,329 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2021-12-06 18:22:15,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.25) internal successors, (65), 20 states have internal predecessors, (65), 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) [2021-12-06 18:22:15,329 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2021-12-06 18:22:15,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-06 18:22:15,330 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:22:15,330 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 18:22:15,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-06 18:22:15,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 18:22:15,532 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:22:15,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:22:15,533 INFO L85 PathProgramCache]: Analyzing trace with hash 775276721, now seen corresponding path program 13 times [2021-12-06 18:22:15,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:22:15,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884332113] [2021-12-06 18:22:15,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:22:15,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:22:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:26,278 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:22:26,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:22:26,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884332113] [2021-12-06 18:22:26,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884332113] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:22:26,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395983493] [2021-12-06 18:22:26,279 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 18:22:26,279 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:22:26,279 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:22:26,280 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:22:26,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d3ae4e5-5f36-499a-baaa-6b89f451480f/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-06 18:22:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:22:26,353 WARN L261 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 113 conjunts are in the unsatisfiable core [2021-12-06 18:22:26,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:22:26,390 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 [2021-12-06 18:22:26,409 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 10 treesize of output 8 [2021-12-06 18:22:26,461 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 14 treesize of output 16 [2021-12-06 18:22:26,556 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 14 treesize of output 16 [2021-12-06 18:22:26,689 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 14 treesize of output 16 [2021-12-06 18:22:26,785 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 14 treesize of output 16 [2021-12-06 18:22:26,916 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 14 treesize of output 16 [2021-12-06 18:22:27,732 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 0 case distinctions, treesize of input 44 treesize of output 27 [2021-12-06 18:22:28,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:28,704 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 42 [2021-12-06 18:22:29,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:29,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:29,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:29,807 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 0 case distinctions, treesize of input 68 treesize of output 57 [2021-12-06 18:22:30,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:31,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:31,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:31,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:31,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:31,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:31,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 72 [2021-12-06 18:22:32,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:32,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:32,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:32,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:32,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:32,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:32,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:32,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:32,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:32,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:32,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 71 [2021-12-06 18:22:33,513 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:22:33,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:33,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:33,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:33,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:33,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:33,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:33,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:33,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:33,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:33,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:33,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 75 [2021-12-06 18:22:34,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:34,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:34,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:34,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:34,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:34,488 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:22:34,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:34,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:34,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:34,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:34,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:34,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:34,512 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 73 [2021-12-06 18:22:35,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:35,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:35,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:35,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:35,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:35,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:35,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:35,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:35,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:35,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:35,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:35,562 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:22:35,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:35,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 78 [2021-12-06 18:22:36,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:36,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:36,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:36,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:36,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:36,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:36,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:36,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:36,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:36,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:36,582 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-06 18:22:36,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:36,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 18:22:36,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 82 treesize of output 75 [2021-12-06 18:22:37,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 65 [2021-12-06 18:22:38,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 40 [2021-12-06 18:22:38,600 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 18:22:38,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:24:58,173 WARN L227 SmtUtils]: Spent 1.55m on a formula simplification. DAG size of input: 4992 DAG size of output: 1730 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-12-06 18:24:58,178 INFO L354 Elim1Store]: treesize reduction 32760, result has 13.4 percent of original size [2021-12-06 18:24:58,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 106 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 111 new quantified variables, introduced 1070 case distinctions, treesize of input 28148521172 treesize of output 4890936022