./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be --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 623f8e570c67201db9fc7be447d74d083955ca752401303f9fce588b7571c3af ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:42:35,400 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:42:35,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:42:35,480 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:42:35,481 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:42:35,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:42:35,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:42:35,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:42:35,498 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:42:35,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:42:35,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:42:35,509 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:42:35,510 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:42:35,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:42:35,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:42:35,521 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:42:35,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:42:35,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:42:35,528 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:42:35,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:42:35,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:42:35,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:42:35,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:42:35,549 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:42:35,562 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:42:35,563 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:42:35,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:42:35,566 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:42:35,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:42:35,569 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:42:35,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:42:35,571 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:42:35,574 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:42:35,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:42:35,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:42:35,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:42:35,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:42:35,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:42:35,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:42:35,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:42:35,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:42:35,584 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:42:35,637 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:42:35,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:42:35,639 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:42:35,639 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:42:35,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:42:35,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:42:35,642 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:42:35,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:42:35,643 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:42:35,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:42:35,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:42:35,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:42:35,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:42:35,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:42:35,646 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:42:35,646 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:42:35,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:42:35,646 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:42:35,647 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:42:35,647 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:42:35,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:42:35,648 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:42:35,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:42:35,648 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:42:35,649 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:42:35,649 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:42:35,649 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:42:35,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:42:35,650 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:42:35,652 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:42:35,652 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:42:35,653 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:42:35,653 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_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 623f8e570c67201db9fc7be447d74d083955ca752401303f9fce588b7571c3af [2021-10-21 19:42:36,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:42:36,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:42:36,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:42:36,093 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:42:36,094 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:42:36,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c [2021-10-21 19:42:36,217 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/data/d0ebf861d/72ac0a6e2b414733aa6476c14a3ffe7e/FLAGb8d44e0a1 [2021-10-21 19:42:36,826 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:42:36,827 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c [2021-10-21 19:42:36,842 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/data/d0ebf861d/72ac0a6e2b414733aa6476c14a3ffe7e/FLAGb8d44e0a1 [2021-10-21 19:42:37,199 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/data/d0ebf861d/72ac0a6e2b414733aa6476c14a3ffe7e [2021-10-21 19:42:37,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:42:37,206 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:42:37,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:42:37,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:42:37,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:42:37,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:42:37" (1/1) ... [2021-10-21 19:42:37,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10510b7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:37, skipping insertion in model container [2021-10-21 19:42:37,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:42:37" (1/1) ... [2021-10-21 19:42:37,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:42:37,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:42:37,516 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c[520,533] [2021-10-21 19:42:37,541 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:42:37,561 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:42:37,582 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound5.c[520,533] [2021-10-21 19:42:37,613 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:42:37,628 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:42:37,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:37 WrapperNode [2021-10-21 19:42:37,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:42:37,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:42:37,631 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:42:37,631 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:42:37,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:37" (1/1) ... [2021-10-21 19:42:37,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:37" (1/1) ... [2021-10-21 19:42:37,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:42:37,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:42:37,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:42:37,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:42:37,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:37" (1/1) ... [2021-10-21 19:42:37,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:37" (1/1) ... [2021-10-21 19:42:37,710 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:37" (1/1) ... [2021-10-21 19:42:37,710 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:37" (1/1) ... [2021-10-21 19:42:37,714 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:37" (1/1) ... [2021-10-21 19:42:37,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:37" (1/1) ... [2021-10-21 19:42:37,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:37" (1/1) ... [2021-10-21 19:42:37,723 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:42:37,724 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:42:37,724 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:42:37,724 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:42:37,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:37" (1/1) ... [2021-10-21 19:42:37,735 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:42:37,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:37,764 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:42:37,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:42:37,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:42:37,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:42:37,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:42:37,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:42:38,086 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:42:38,087 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-21 19:42:38,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:42:38 BoogieIcfgContainer [2021-10-21 19:42:38,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:42:38,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:42:38,092 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:42:38,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:42:38,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:42:37" (1/3) ... [2021-10-21 19:42:38,097 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be978e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:42:38, skipping insertion in model container [2021-10-21 19:42:38,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:42:37" (2/3) ... [2021-10-21 19:42:38,098 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be978e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:42:38, skipping insertion in model container [2021-10-21 19:42:38,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:42:38" (3/3) ... [2021-10-21 19:42:38,100 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound5.c [2021-10-21 19:42:38,106 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:42:38,107 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-21 19:42:38,164 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:42:38,172 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 [2021-10-21 19:42:38,173 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-21 19:42:38,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:38,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 19:42:38,197 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:38,198 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:38,198 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:42:38,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:38,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-10-21 19:42:38,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:38,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003540617] [2021-10-21 19:42:38,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:38,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:38,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:38,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:38,489 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003540617] [2021-10-21 19:42:38,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003540617] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:42:38,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:42:38,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:42:38,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821149318] [2021-10-21 19:42:38,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:42:38,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:38,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:42:38,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:42:38,541 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-21 19:42:38,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:38,568 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-10-21 19:42:38,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:42:38,570 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-10-21 19:42:38,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:38,579 INFO L225 Difference]: With dead ends: 63 [2021-10-21 19:42:38,579 INFO L226 Difference]: Without dead ends: 29 [2021-10-21 19:42:38,584 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:42:38,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-21 19:42:38,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-21 19:42:38,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:38,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-10-21 19:42:38,651 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-10-21 19:42:38,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:38,654 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-10-21 19:42:38,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2021-10-21 19:42:38,654 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-10-21 19:42:38,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 19:42:38,656 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:38,656 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:38,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:42:38,657 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:42:38,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:38,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-10-21 19:42:38,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:38,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496162797] [2021-10-21 19:42:38,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:38,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:38,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:38,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:38,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496162797] [2021-10-21 19:42:38,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496162797] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:42:38,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:42:38,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:42:38,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520522625] [2021-10-21 19:42:38,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:42:38,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:38,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:42:38,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:42:38,888 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-21 19:42:39,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:39,068 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-10-21 19:42:39,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:42:39,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-10-21 19:42:39,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:39,071 INFO L225 Difference]: With dead ends: 54 [2021-10-21 19:42:39,071 INFO L226 Difference]: Without dead ends: 50 [2021-10-21 19:42:39,073 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:42:39,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-21 19:42:39,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2021-10-21 19:42:39,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 32 states have (on average 1.28125) internal successors, (41), 37 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:39,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-10-21 19:42:39,099 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 7 [2021-10-21 19:42:39,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:39,099 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-10-21 19:42:39,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-21 19:42:39,100 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-10-21 19:42:39,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-21 19:42:39,101 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:39,102 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:39,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:42:39,105 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:42:39,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:39,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-10-21 19:42:39,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:39,113 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677107698] [2021-10-21 19:42:39,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:39,114 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:39,150 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:42:39,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070706260] [2021-10-21 19:42:39,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:39,154 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:39,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:39,160 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:39,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:42:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:39,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:42:39,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:39,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:39,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:39,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677107698] [2021-10-21 19:42:39,459 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:42:39,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070706260] [2021-10-21 19:42:39,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070706260] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:42:39,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:42:39,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:42:39,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214593463] [2021-10-21 19:42:39,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:42:39,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:39,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:42:39,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:42:39,465 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:39,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:39,603 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2021-10-21 19:42:39,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:42:39,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-21 19:42:39,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:39,605 INFO L225 Difference]: With dead ends: 50 [2021-10-21 19:42:39,606 INFO L226 Difference]: Without dead ends: 46 [2021-10-21 19:42:39,606 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:42:39,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-21 19:42:39,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2021-10-21 19:42:39,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 34 states have (on average 1.2352941176470589) internal successors, (42), 39 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:39,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2021-10-21 19:42:39,626 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 9 [2021-10-21 19:42:39,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:39,626 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2021-10-21 19:42:39,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:39,627 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2021-10-21 19:42:39,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-21 19:42:39,628 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:39,628 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:39,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:39,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-21 19:42:39,842 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:42:39,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:39,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-10-21 19:42:39,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:39,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796648293] [2021-10-21 19:42:39,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:39,844 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:39,860 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:42:39,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [696477563] [2021-10-21 19:42:39,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:39,869 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:39,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:39,871 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:39,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:42:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:39,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:42:39,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:40,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:40,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:40,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796648293] [2021-10-21 19:42:40,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:42:40,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696477563] [2021-10-21 19:42:40,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696477563] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:42:40,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:42:40,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:42:40,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252847544] [2021-10-21 19:42:40,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:42:40,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:40,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:42:40,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:42:40,048 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-21 19:42:40,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:40,122 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2021-10-21 19:42:40,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:42:40,122 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-10-21 19:42:40,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:40,124 INFO L225 Difference]: With dead ends: 47 [2021-10-21 19:42:40,124 INFO L226 Difference]: Without dead ends: 37 [2021-10-21 19:42:40,124 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:42:40,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-21 19:42:40,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2021-10-21 19:42:40,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.2) internal successors, (36), 35 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:40,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-10-21 19:42:40,132 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 11 [2021-10-21 19:42:40,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:40,133 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-10-21 19:42:40,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-21 19:42:40,133 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-10-21 19:42:40,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-21 19:42:40,134 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:40,134 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:40,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:40,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:40,356 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:42:40,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:40,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1783845574, now seen corresponding path program 1 times [2021-10-21 19:42:40,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:40,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593538086] [2021-10-21 19:42:40,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:40,357 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:40,372 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:42:40,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1816001060] [2021-10-21 19:42:40,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:40,373 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:40,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:40,374 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:40,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:42:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:40,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:42:40,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:40,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:40,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:40,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593538086] [2021-10-21 19:42:40,633 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:42:40,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816001060] [2021-10-21 19:42:40,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816001060] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:40,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:42:40,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-21 19:42:40,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258223679] [2021-10-21 19:42:40,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:42:40,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:40,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:42:40,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:42:40,637 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:40,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:40,770 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2021-10-21 19:42:40,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:42:40,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-21 19:42:40,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:40,772 INFO L225 Difference]: With dead ends: 61 [2021-10-21 19:42:40,773 INFO L226 Difference]: Without dead ends: 57 [2021-10-21 19:42:40,773 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 42.7ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:42:40,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-21 19:42:40,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 45. [2021-10-21 19:42:40,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 44 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) [2021-10-21 19:42:40,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2021-10-21 19:42:40,783 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 14 [2021-10-21 19:42:40,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:40,783 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2021-10-21 19:42:40,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:40,784 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2021-10-21 19:42:40,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-21 19:42:40,785 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:40,785 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:40,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:41,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:41,002 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:42:41,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:41,003 INFO L82 PathProgramCache]: Analyzing trace with hash -583489763, now seen corresponding path program 1 times [2021-10-21 19:42:41,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:41,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942026357] [2021-10-21 19:42:41,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:41,004 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:41,029 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:42:41,029 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1681701853] [2021-10-21 19:42:41,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:41,030 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:41,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:41,032 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:41,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 19:42:41,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:41,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 19:42:41,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:41,361 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:41,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:41,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942026357] [2021-10-21 19:42:41,362 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:42:41,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681701853] [2021-10-21 19:42:41,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681701853] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:41,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:42:41,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-21 19:42:41,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202486308] [2021-10-21 19:42:41,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:42:41,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:41,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:42:41,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:42:41,366 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-21 19:42:41,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:41,477 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2021-10-21 19:42:41,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:42:41,478 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-21 19:42:41,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:41,479 INFO L225 Difference]: With dead ends: 57 [2021-10-21 19:42:41,480 INFO L226 Difference]: Without dead ends: 53 [2021-10-21 19:42:41,480 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 39.7ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:42:41,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-21 19:42:41,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2021-10-21 19:42:41,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 46 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) [2021-10-21 19:42:41,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 49 transitions. [2021-10-21 19:42:41,490 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 49 transitions. Word has length 16 [2021-10-21 19:42:41,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:41,490 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 49 transitions. [2021-10-21 19:42:41,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-21 19:42:41,491 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 49 transitions. [2021-10-21 19:42:41,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 19:42:41,492 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:41,492 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:41,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:41,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-21 19:42:41,705 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:42:41,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:41,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1907209632, now seen corresponding path program 1 times [2021-10-21 19:42:41,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:41,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72943536] [2021-10-21 19:42:41,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:41,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:41,720 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:42:41,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1257860027] [2021-10-21 19:42:41,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:41,721 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:41,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:41,723 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:41,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 19:42:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:42:41,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 19:42:41,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:42,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:42,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:42,050 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72943536] [2021-10-21 19:42:42,050 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:42:42,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257860027] [2021-10-21 19:42:42,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257860027] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:42,052 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:42:42,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-21 19:42:42,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767178047] [2021-10-21 19:42:42,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:42:42,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:42,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:42:42,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:42:42,057 INFO L87 Difference]: Start difference. First operand 47 states and 49 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-21 19:42:42,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:42,161 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-10-21 19:42:42,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:42:42,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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 18 [2021-10-21 19:42:42,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:42,162 INFO L225 Difference]: With dead ends: 54 [2021-10-21 19:42:42,162 INFO L226 Difference]: Without dead ends: 44 [2021-10-21 19:42:42,164 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 34.6ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:42:42,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-21 19:42:42,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2021-10-21 19:42:42,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 37 states have (on average 1.162162162162162) internal successors, (43), 42 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) [2021-10-21 19:42:42,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2021-10-21 19:42:42,181 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 18 [2021-10-21 19:42:42,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:42,181 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2021-10-21 19:42:42,182 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 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) [2021-10-21 19:42:42,182 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2021-10-21 19:42:42,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-21 19:42:42,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:42,183 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:42,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:42,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:42,413 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:42:42,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:42,414 INFO L82 PathProgramCache]: Analyzing trace with hash -435278385, now seen corresponding path program 2 times [2021-10-21 19:42:42,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:42,414 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136813813] [2021-10-21 19:42:42,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:42,415 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:42,427 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:42:42,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1724400331] [2021-10-21 19:42:42,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:42:42,428 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:42,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:42,429 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:42,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 19:42:42,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:42:42,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:42:42,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 19:42:42,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:42,780 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:42,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:42,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136813813] [2021-10-21 19:42:42,780 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:42:42,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724400331] [2021-10-21 19:42:42,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724400331] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:42,781 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:42:42,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-21 19:42:42,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682525356] [2021-10-21 19:42:42,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:42:42,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:42,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:42:42,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:42:42,783 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2021-10-21 19:42:42,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:42,945 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2021-10-21 19:42:42,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:42:42,948 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 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) Word has length 21 [2021-10-21 19:42:42,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:42,950 INFO L225 Difference]: With dead ends: 68 [2021-10-21 19:42:42,950 INFO L226 Difference]: Without dead ends: 64 [2021-10-21 19:42:42,950 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 54.6ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:42:42,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-21 19:42:42,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2021-10-21 19:42:42,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 51 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) [2021-10-21 19:42:42,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 55 transitions. [2021-10-21 19:42:42,965 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 55 transitions. Word has length 21 [2021-10-21 19:42:42,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:42,966 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 55 transitions. [2021-10-21 19:42:42,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 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) [2021-10-21 19:42:42,966 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 55 transitions. [2021-10-21 19:42:42,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:42:42,967 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:42,967 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:42,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:43,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:43,189 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:42:43,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:43,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1690544526, now seen corresponding path program 2 times [2021-10-21 19:42:43,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:43,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125717715] [2021-10-21 19:42:43,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:43,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:43,204 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:42:43,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848923720] [2021-10-21 19:42:43,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:42:43,205 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:43,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:43,206 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:43,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 19:42:43,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:42:43,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:42:43,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-21 19:42:43,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:43,647 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:42:43,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:43,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125717715] [2021-10-21 19:42:43,652 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:42:43,652 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848923720] [2021-10-21 19:42:43,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848923720] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:42:43,653 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:42:43,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-10-21 19:42:43,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504018276] [2021-10-21 19:42:43,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:42:43,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:43,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:42:43,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:42:43,655 INFO L87 Difference]: Start difference. First operand 52 states and 55 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:43,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:42:43,810 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2021-10-21 19:42:43,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:42:43,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-21 19:42:43,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:42:43,813 INFO L225 Difference]: With dead ends: 64 [2021-10-21 19:42:43,813 INFO L226 Difference]: Without dead ends: 60 [2021-10-21 19:42:43,814 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 63.6ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:42:43,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-21 19:42:43,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2021-10-21 19:42:43,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 53 states have internal predecessors, (56), 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) [2021-10-21 19:42:43,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2021-10-21 19:42:43,824 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 23 [2021-10-21 19:42:43,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:42:43,824 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2021-10-21 19:42:43,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:42:43,825 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2021-10-21 19:42:43,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-21 19:42:43,825 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:42:43,826 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-21 19:42:43,868 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:42:44,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:44,038 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:42:44,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:42:44,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1115495499, now seen corresponding path program 2 times [2021-10-21 19:42:44,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:42:44,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372016033] [2021-10-21 19:42:44,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:42:44,039 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:42:44,051 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:42:44,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1638117881] [2021-10-21 19:42:44,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:42:44,052 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:42:44,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:42:44,054 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:42:44,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 19:42:44,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-21 19:42:44,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:42:44,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 19:42:44,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:42:44,468 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-21 19:42:44,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:42:44,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372016033] [2021-10-21 19:42:44,469 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:42:44,470 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1638117881] [2021-10-21 19:42:44,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1638117881] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:42:44,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:42:44,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:42:44,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628605535] [2021-10-21 19:42:44,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:42:44,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:42:44,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:42:44,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:42:44,473 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-10-21 19:43:00,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:43:00,788 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2021-10-21 19:43:00,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:43:00,789 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 25 [2021-10-21 19:43:00,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:43:00,790 INFO L225 Difference]: With dead ends: 54 [2021-10-21 19:43:00,790 INFO L226 Difference]: Without dead ends: 44 [2021-10-21 19:43:00,790 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 271.2ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:43:00,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-21 19:43:00,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-10-21 19:43:00,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 40 states have (on average 1.1) internal successors, (44), 43 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) [2021-10-21 19:43:00,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2021-10-21 19:43:00,796 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 25 [2021-10-21 19:43:00,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:43:00,796 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2021-10-21 19:43:00,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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) [2021-10-21 19:43:00,797 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2021-10-21 19:43:00,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-21 19:43:00,797 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:43:00,798 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-21 19:43:00,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:43:00,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:43:00,999 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:43:00,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:43:00,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1559508070, now seen corresponding path program 3 times [2021-10-21 19:43:00,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:43:01,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533327045] [2021-10-21 19:43:01,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:43:01,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:43:01,021 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:43:01,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756652045] [2021-10-21 19:43:01,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:43:01,022 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:43:01,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:43:01,025 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:43:01,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 19:43:01,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 19:43:01,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:43:01,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 19:43:01,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:43:01,419 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-21 19:43:01,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:43:01,419 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533327045] [2021-10-21 19:43:01,420 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:43:01,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756652045] [2021-10-21 19:43:01,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756652045] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:43:01,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:43:01,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-10-21 19:43:01,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413689848] [2021-10-21 19:43:01,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:43:01,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:43:01,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:43:01,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:43:01,423 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 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) [2021-10-21 19:43:01,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:43:01,484 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-10-21 19:43:01,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:43:01,485 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 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) Word has length 28 [2021-10-21 19:43:01,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:43:01,486 INFO L225 Difference]: With dead ends: 44 [2021-10-21 19:43:01,486 INFO L226 Difference]: Without dead ends: 40 [2021-10-21 19:43:01,486 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.8ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:43:01,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-10-21 19:43:01,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-10-21 19:43:01,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 39 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:43:01,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-10-21 19:43:01,495 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 28 [2021-10-21 19:43:01,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:43:01,496 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-10-21 19:43:01,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 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) [2021-10-21 19:43:01,496 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-10-21 19:43:01,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-21 19:43:01,498 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:43:01,498 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-21 19:43:01,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:43:01,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:43:01,705 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-21 19:43:01,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:43:01,705 INFO L82 PathProgramCache]: Analyzing trace with hash 256486781, now seen corresponding path program 3 times [2021-10-21 19:43:01,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:43:01,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670760699] [2021-10-21 19:43:01,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:43:01,711 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:43:01,723 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:43:01,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499432632] [2021-10-21 19:43:01,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:43:01,728 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:43:01,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:43:01,729 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:43:01,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-21 19:43:01,920 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-21 19:43:01,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:43:01,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:43:01,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:43:02,321 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-10-21 19:43:02,321 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:43:02,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670760699] [2021-10-21 19:43:02,321 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:43:02,321 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499432632] [2021-10-21 19:43:02,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1499432632] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:43:02,322 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:43:02,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-21 19:43:02,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68163847] [2021-10-21 19:43:02,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:43:02,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:43:02,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:43:02,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:43:02,324 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-10-21 19:43:03,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:43:03,276 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-10-21 19:43:03,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:43:03,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 30 [2021-10-21 19:43:03,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:43:03,277 INFO L225 Difference]: With dead ends: 40 [2021-10-21 19:43:03,278 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:43:03,278 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 789.6ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:43:03,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:43:03,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:43:03,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:43:03,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:43:03,279 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2021-10-21 19:43:03,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:43:03,279 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:43:03,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2021-10-21 19:43:03,280 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:43:03,280 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:43:03,283 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:43:03,283 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:43:03,283 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:43:03,284 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:43:03,284 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:43:03,284 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:43:03,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:43:03,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-21 19:43:03,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:43:03,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:43:03,528 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:43:03,559 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:43:03,575 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:43:03,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:43:03,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:43:03,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:43:03,645 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:43:10,207 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-21 19:43:10,207 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-21 19:43:10,207 INFO L860 garLoopResultBuilder]: At program point L48(lines 20 49) the Hoare annotation is: true [2021-10-21 19:43:10,209 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 19:43:10,209 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-21 19:43:10,209 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 19:43:10,209 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 19:43:10,210 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-21 19:43:10,210 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-10-21 19:43:10,210 INFO L853 garLoopResultBuilder]: At program point L12-2(lines 11 17) the Hoare annotation is: (and (exists ((ULTIMATE.start_main_~t~0 Int)) (and (let ((.cse0 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0) (and (not .cse0) (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)))) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-10-21 19:43:10,210 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-10-21 19:43:10,212 INFO L857 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-10-21 19:43:10,212 INFO L853 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (and (exists ((ULTIMATE.start_main_~t~0 Int)) (and (let ((.cse0 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0) (and (not .cse0) (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)))) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-10-21 19:43:10,212 INFO L857 garLoopResultBuilder]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2021-10-21 19:43:10,213 INFO L853 garLoopResultBuilder]: At program point L12-8(lines 36 37) the Hoare annotation is: (and (exists ((ULTIMATE.start_main_~t~0 Int)) (and (let ((.cse0 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0) (and (not .cse0) (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)))) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-10-21 19:43:10,213 INFO L857 garLoopResultBuilder]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2021-10-21 19:43:10,214 INFO L853 garLoopResultBuilder]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and (= ULTIMATE.start_main_~t~0 3) (= ULTIMATE.start_main_~a~0 1) .cse0 (= ULTIMATE.start_main_~s~0 4)) (and (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1) (= ULTIMATE.start_main_~s~0 1) .cse0) (and (exists ((ULTIMATE.start_main_~t~0 Int)) (and (let ((.cse1 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1) (and (not .cse1) (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)))) (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)) .cse0))) [2021-10-21 19:43:10,214 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 19:43:10,214 INFO L857 garLoopResultBuilder]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2021-10-21 19:43:10,214 INFO L853 garLoopResultBuilder]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)))) (or (and (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)) .cse0 (= ULTIMATE.start_main_~s~0 (let ((.cse1 (div (+ (* ULTIMATE.start_main_~t~0 (- 1)) 1) (- 2)))) (+ (* 2 .cse1) (* .cse1 .cse1) 1)))) (and (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) (= ULTIMATE.start_main_~t~0 3) .cse0) (and (= ULTIMATE.start_main_~t~0 1) (= ULTIMATE.start_main_~s~0 1) .cse0))) [2021-10-21 19:43:10,215 INFO L857 garLoopResultBuilder]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2021-10-21 19:43:10,215 INFO L860 garLoopResultBuilder]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2021-10-21 19:43:10,215 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-21 19:43:10,215 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-10-21 19:43:10,216 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-10-21 19:43:10,216 INFO L857 garLoopResultBuilder]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2021-10-21 19:43:10,216 INFO L857 garLoopResultBuilder]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2021-10-21 19:43:10,216 INFO L857 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-10-21 19:43:10,216 INFO L857 garLoopResultBuilder]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2021-10-21 19:43:10,217 INFO L857 garLoopResultBuilder]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2021-10-21 19:43:10,217 INFO L853 garLoopResultBuilder]: At program point L30-2(lines 30 42) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~t~0 (+ (* 2 ULTIMATE.start_main_~a~0) 1)))) (or (and (= ULTIMATE.start_main_~t~0 1) .cse0 (= ULTIMATE.start_main_~s~0 (let ((.cse1 (div (+ (* ULTIMATE.start_main_~t~0 (- 1)) 1) (- 2)))) (+ (* 2 .cse1) (* .cse1 .cse1) 1)))) (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 2 ULTIMATE.start_main_~t~0) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* 4 ULTIMATE.start_main_~s~0)) .cse0))) [2021-10-21 19:43:10,217 INFO L857 garLoopResultBuilder]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2021-10-21 19:43:10,219 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-10-21 19:43:10,225 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:43:10,243 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,244 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,245 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,245 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,245 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,253 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,254 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,254 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,254 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,254 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,257 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,258 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,258 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,258 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,258 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,259 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,259 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,259 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,260 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,260 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,261 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,261 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,261 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,262 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,262 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,263 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,263 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,263 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,264 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,264 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,277 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,278 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,278 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,278 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,279 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,279 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,280 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,280 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,280 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,280 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:43:10 BoogieIcfgContainer [2021-10-21 19:43:10,281 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:43:10,282 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:43:10,283 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:43:10,283 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:43:10,284 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:42:38" (3/4) ... [2021-10-21 19:43:10,287 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 19:43:10,303 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2021-10-21 19:43:10,304 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 19:43:10,304 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:43:10,305 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 19:43:10,343 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((t == 3 && a == 1) && !(0 == cond)) && s == 4) || (((a == 0 && t == 1) && s == 1) && !(0 == cond))) || (((\exists ULTIMATE.start_main_~t~0 : int :: ((1 == cond && ULTIMATE.start_main_~t~0 == 2 * a + 1) || (!(ULTIMATE.start_main_~t~0 == 2 * a + 1) && 0 == cond)) && 2 * ULTIMATE.start_main_~t~0 + ULTIMATE.start_main_~t~0 * ULTIMATE.start_main_~t~0 + 1 == 4 * s) && t == 2 * a + 1) && !(0 == cond)) [2021-10-21 19:43:10,343 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists ULTIMATE.start_main_~t~0 : int :: ((1 == cond && ULTIMATE.start_main_~t~0 == 2 * a + 1) || (!(ULTIMATE.start_main_~t~0 == 2 * a + 1) && 0 == cond)) && 2 * ULTIMATE.start_main_~t~0 + ULTIMATE.start_main_~t~0 * ULTIMATE.start_main_~t~0 + 1 == 4 * s) && t == 2 * a + 1) && !(0 == cond) [2021-10-21 19:43:10,344 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists ULTIMATE.start_main_~t~0 : int :: ((1 == cond && ULTIMATE.start_main_~t~0 == 2 * a + 1) || (!(ULTIMATE.start_main_~t~0 == 2 * a + 1) && 0 == cond)) && 2 * ULTIMATE.start_main_~t~0 + ULTIMATE.start_main_~t~0 * ULTIMATE.start_main_~t~0 + 1 == 4 * s) && t == 2 * a + 1) && !(0 == cond) [2021-10-21 19:43:10,345 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists ULTIMATE.start_main_~t~0 : int :: ((1 == cond && ULTIMATE.start_main_~t~0 == 2 * a + 1) || (!(ULTIMATE.start_main_~t~0 == 2 * a + 1) && 0 == cond)) && 2 * ULTIMATE.start_main_~t~0 + ULTIMATE.start_main_~t~0 * ULTIMATE.start_main_~t~0 + 1 == 4 * s) && t == 2 * a + 1) && !(0 == cond) [2021-10-21 19:43:10,367 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:43:10,368 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:43:10,370 INFO L168 Benchmark]: Toolchain (without parser) took 33162.64 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 58.7 MB in the beginning and 79.9 MB in the end (delta: -21.2 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2021-10-21 19:43:10,370 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 92.3 MB. Free memory was 64.6 MB in the beginning and 64.6 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:43:10,371 INFO L168 Benchmark]: CACSL2BoogieTranslator took 417.76 ms. Allocated memory is still 92.3 MB. Free memory was 58.4 MB in the beginning and 68.7 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:43:10,372 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.99 ms. Allocated memory is still 92.3 MB. Free memory was 68.7 MB in the beginning and 67.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:43:10,373 INFO L168 Benchmark]: Boogie Preprocessor took 41.12 ms. Allocated memory is still 92.3 MB. Free memory was 67.0 MB in the beginning and 66.2 MB in the end (delta: 776.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:43:10,373 INFO L168 Benchmark]: RCFGBuilder took 365.60 ms. Allocated memory is still 92.3 MB. Free memory was 65.8 MB in the beginning and 55.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:43:10,374 INFO L168 Benchmark]: TraceAbstraction took 32190.31 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 55.3 MB in the beginning and 83.0 MB in the end (delta: -27.7 MB). Peak memory consumption was 55.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:43:10,374 INFO L168 Benchmark]: Witness Printer took 85.67 ms. Allocated memory is still 123.7 MB. Free memory was 83.0 MB in the beginning and 79.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:43:10,377 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 92.3 MB. Free memory was 64.6 MB in the beginning and 64.6 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 417.76 ms. Allocated memory is still 92.3 MB. Free memory was 58.4 MB in the beginning and 68.7 MB in the end (delta: -10.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.99 ms. Allocated memory is still 92.3 MB. Free memory was 68.7 MB in the beginning and 67.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.12 ms. Allocated memory is still 92.3 MB. Free memory was 67.0 MB in the beginning and 66.2 MB in the end (delta: 776.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 365.60 ms. Allocated memory is still 92.3 MB. Free memory was 65.8 MB in the beginning and 55.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 32190.31 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 55.3 MB in the beginning and 83.0 MB in the end (delta: -27.7 MB). Peak memory consumption was 55.5 MB. Max. memory is 16.1 GB. * Witness Printer took 85.67 ms. Allocated memory is still 123.7 MB. Free memory was 83.0 MB in the beginning and 79.9 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 32061.7ms, OverallIterations: 12, TraceHistogramMax: 4, EmptinessCheckTime: 20.5ms, AutomataDifference: 18513.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 6701.1ms, InitialAbstractionConstructionTime: 13.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 224 SDtfs, 200 SDslu, 411 SDs, 0 SdLazy, 588 SolverSat, 115 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 16902.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1415.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=9, InterpolantAutomatonStates: 72, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 175.3ms AutomataMinimizationTime, 12 MinimizatonAttempts, 56 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 33 NumberOfFragments, 359 HoareAnnotationTreeSize, 8 FomulaSimplifications, 2549 FormulaSimplificationTreeSizeReduction, 136.5ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 254 FormulaSimplificationTreeSizeReductionInter, 6556.6ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 128.6ms SsaConstructionTime, 374.5ms SatisfiabilityAnalysisTime, 2515.7ms InterpolantComputationTime, 209 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 197 ConstructedInterpolants, 1 QuantifiedInterpolants, 1059 SizeOfPredicates, 45 NumberOfNonLiveVariables, 800 ConjunctsInSsa, 133 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 78/117 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant [2021-10-21 19:43:10,400 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,400 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,400 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,401 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,401 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,402 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,403 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,404 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,404 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,404 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] Derived loop invariant: ((\exists ULTIMATE.start_main_~t~0 : int :: ((1 == cond && ULTIMATE.start_main_~t~0 == 2 * a + 1) || (!(ULTIMATE.start_main_~t~0 == 2 * a + 1) && 0 == cond)) && 2 * ULTIMATE.start_main_~t~0 + ULTIMATE.start_main_~t~0 * ULTIMATE.start_main_~t~0 + 1 == 4 * s) && t == 2 * a + 1) && !(0 == cond) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((t == 1 && t == 2 * a + 1) && s == 2 * ((t * -1 + 1) / -2) + (t * -1 + 1) / -2 * ((t * -1 + 1) / -2) + 1) || ((1 == cond && 2 * t + t * t + 1 == 4 * s) && t == 2 * a + 1) - InvariantResult [Line: 36]: Loop Invariant [2021-10-21 19:43:10,409 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,409 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,411 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,412 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,412 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,413 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,414 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,414 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,414 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,414 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] Derived loop invariant: ((\exists ULTIMATE.start_main_~t~0 : int :: ((1 == cond && ULTIMATE.start_main_~t~0 == 2 * a + 1) || (!(ULTIMATE.start_main_~t~0 == 2 * a + 1) && 0 == cond)) && 2 * ULTIMATE.start_main_~t~0 + ULTIMATE.start_main_~t~0 * ULTIMATE.start_main_~t~0 + 1 == 4 * s) && t == 2 * a + 1) && !(0 == cond) - InvariantResult [Line: 11]: Loop Invariant [2021-10-21 19:43:10,415 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,415 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,416 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,416 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,416 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,417 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,417 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,417 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,417 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,418 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] Derived loop invariant: ((((t == 3 && a == 1) && !(0 == cond)) && s == 4) || (((a == 0 && t == 1) && s == 1) && !(0 == cond))) || (((\exists ULTIMATE.start_main_~t~0 : int :: ((1 == cond && ULTIMATE.start_main_~t~0 == 2 * a + 1) || (!(ULTIMATE.start_main_~t~0 == 2 * a + 1) && 0 == cond)) && 2 * ULTIMATE.start_main_~t~0 + ULTIMATE.start_main_~t~0 * ULTIMATE.start_main_~t~0 + 1 == 4 * s) && t == 2 * a + 1) && !(0 == cond)) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((t == 2 * a + 1 && !(0 == cond)) && s == 2 * ((t * -1 + 1) / -2) + (t * -1 + 1) / -2 * ((t * -1 + 1) / -2) + 1) || ((s == t + 1 && t == 3) && !(0 == cond))) || ((t == 1 && s == 1) && !(0 == cond)) - InvariantResult [Line: 11]: Loop Invariant [2021-10-21 19:43:10,427 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,427 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,427 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,428 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,428 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,428 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,429 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,429 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,429 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] [2021-10-21 19:43:10,430 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~t~0,QUANTIFIED] Derived loop invariant: ((\exists ULTIMATE.start_main_~t~0 : int :: ((1 == cond && ULTIMATE.start_main_~t~0 == 2 * a + 1) || (!(ULTIMATE.start_main_~t~0 == 2 * a + 1) && 0 == cond)) && 2 * ULTIMATE.start_main_~t~0 + ULTIMATE.start_main_~t~0 * ULTIMATE.start_main_~t~0 + 1 == 4 * s) && t == 2 * a + 1) && !(0 == cond) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-21 19:43:10,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ef32725-b42d-4686-bcee-7cb585e0be78/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...