./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/nested-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-new/nested-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg --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 3baf312ca85439572472b3c02ed304b3157fa97373d6ada535e5a723c6c0219a .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:12:47,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:12:47,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:12:47,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:12:47,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:12:47,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:12:47,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:12:47,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:12:47,613 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:12:47,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:12:47,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:12:47,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:12:47,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:12:47,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:12:47,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:12:47,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:12:47,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:12:47,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:12:47,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:12:47,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:12:47,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:12:47,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:12:47,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:12:47,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:12:47,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:12:47,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:12:47,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:12:47,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:12:47,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:12:47,646 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:12:47,647 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:12:47,648 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:12:47,656 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:12:47,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:12:47,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:12:47,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:12:47,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:12:47,661 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:12:47,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:12:47,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:12:47,666 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:12:47,667 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:12:47,709 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:12:47,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:12:47,710 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:12:47,710 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:12:47,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:12:47,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:12:47,712 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:12:47,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:12:47,713 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:12:47,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:12:47,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:12:47,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:12:47,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:12:47,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:12:47,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:12:47,714 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:12:47,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:12:47,715 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:12:47,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:12:47,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:12:47,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:12:47,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:12:47,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:12:47,720 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:12:47,720 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:12:47,721 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:12:47,721 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:12:47,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:12:47,722 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:12:47,724 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:12:47,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:12:47,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:12:47,724 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_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3baf312ca85439572472b3c02ed304b3157fa97373d6ada535e5a723c6c0219a [2021-10-28 09:12:47,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:12:48,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:12:48,017 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:12:48,019 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:12:48,020 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:12:48,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/loop-new/nested-1.i [2021-10-28 09:12:48,133 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/data/b269f4d95/654d601705224c57adcfc9c77e0783b0/FLAG9dede66c0 [2021-10-28 09:12:48,548 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:12:48,549 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/sv-benchmarks/c/loop-new/nested-1.i [2021-10-28 09:12:48,556 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/data/b269f4d95/654d601705224c57adcfc9c77e0783b0/FLAG9dede66c0 [2021-10-28 09:12:48,949 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/data/b269f4d95/654d601705224c57adcfc9c77e0783b0 [2021-10-28 09:12:48,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:12:48,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:12:48,965 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:12:48,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:12:48,968 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:12:48,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:12:48" (1/1) ... [2021-10-28 09:12:48,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2df43951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:48, skipping insertion in model container [2021-10-28 09:12:48,971 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:12:48" (1/1) ... [2021-10-28 09:12:48,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:12:48,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:12:49,174 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_c6d9ef4b-5bff-4836-8678-daa7055c3b85/sv-benchmarks/c/loop-new/nested-1.i[891,904] [2021-10-28 09:12:49,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:12:49,194 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:12:49,204 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_c6d9ef4b-5bff-4836-8678-daa7055c3b85/sv-benchmarks/c/loop-new/nested-1.i[891,904] [2021-10-28 09:12:49,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:12:49,222 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:12:49,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:49 WrapperNode [2021-10-28 09:12:49,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:12:49,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:12:49,224 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:12:49,224 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:12:49,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:49" (1/1) ... [2021-10-28 09:12:49,238 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:49" (1/1) ... [2021-10-28 09:12:49,257 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:12:49,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:12:49,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:12:49,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:12:49,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:49" (1/1) ... [2021-10-28 09:12:49,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:49" (1/1) ... [2021-10-28 09:12:49,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:49" (1/1) ... [2021-10-28 09:12:49,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:49" (1/1) ... [2021-10-28 09:12:49,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:49" (1/1) ... [2021-10-28 09:12:49,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:49" (1/1) ... [2021-10-28 09:12:49,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:49" (1/1) ... [2021-10-28 09:12:49,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:12:49,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:12:49,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:12:49,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:12:49,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:49" (1/1) ... [2021-10-28 09:12:49,292 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:12:49,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:49,331 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:12:49,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:12:49,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:12:49,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:12:49,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:12:49,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:12:49,553 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:12:49,554 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 09:12:49,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:12:49 BoogieIcfgContainer [2021-10-28 09:12:49,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:12:49,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:12:49,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:12:49,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:12:49,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:12:48" (1/3) ... [2021-10-28 09:12:49,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6632e427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:12:49, skipping insertion in model container [2021-10-28 09:12:49,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:12:49" (2/3) ... [2021-10-28 09:12:49,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6632e427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:12:49, skipping insertion in model container [2021-10-28 09:12:49,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:12:49" (3/3) ... [2021-10-28 09:12:49,579 INFO L111 eAbstractionObserver]: Analyzing ICFG nested-1.i [2021-10-28 09:12:49,596 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:12:49,596 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 09:12:49,647 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:12:49,654 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 [2021-10-28 09:12:49,655 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 09:12:49,669 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:49,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 09:12:49,675 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:12:49,675 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:12:49,676 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:12:49,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:49,682 INFO L85 PathProgramCache]: Analyzing trace with hash 179613278, now seen corresponding path program 1 times [2021-10-28 09:12:49,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:49,693 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676534983] [2021-10-28 09:12:49,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:49,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:50,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:12:50,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:50,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676534983] [2021-10-28 09:12:50,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676534983] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:12:50,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:12:50,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:12:50,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866975414] [2021-10-28 09:12:50,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:12:50,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:50,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:12:50,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:12:50,043 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 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 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:50,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:12:50,099 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2021-10-28 09:12:50,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:12:50,101 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-28 09:12:50,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:12:50,109 INFO L225 Difference]: With dead ends: 35 [2021-10-28 09:12:50,110 INFO L226 Difference]: Without dead ends: 16 [2021-10-28 09:12:50,114 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:12:50,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-28 09:12:50,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 13. [2021-10-28 09:12:50,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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) [2021-10-28 09:12:50,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-10-28 09:12:50,153 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2021-10-28 09:12:50,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:12:50,154 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-10-28 09:12:50,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:50,155 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-10-28 09:12:50,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:12:50,156 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:12:50,157 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:12:50,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:12:50,157 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:12:50,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:50,164 INFO L85 PathProgramCache]: Analyzing trace with hash 754200042, now seen corresponding path program 1 times [2021-10-28 09:12:50,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:50,165 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765573552] [2021-10-28 09:12:50,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:50,165 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:50,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:12:50,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:50,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765573552] [2021-10-28 09:12:50,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765573552] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:12:50,258 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:12:50,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:12:50,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179631082] [2021-10-28 09:12:50,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:12:50,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:50,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:12:50,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:12:50,265 INFO L87 Difference]: Start difference. First operand 13 states and 14 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) [2021-10-28 09:12:50,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:12:50,294 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-10-28 09:12:50,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:12:50,297 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 [2021-10-28 09:12:50,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:12:50,298 INFO L225 Difference]: With dead ends: 23 [2021-10-28 09:12:50,299 INFO L226 Difference]: Without dead ends: 15 [2021-10-28 09:12:50,300 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:12:50,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-28 09:12:50,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-10-28 09:12:50,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:50,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-28 09:12:50,317 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2021-10-28 09:12:50,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:12:50,317 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-28 09:12:50,318 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) [2021-10-28 09:12:50,318 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-28 09:12:50,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:12:50,320 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:12:50,320 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:12:50,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:12:50,322 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:12:50,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:50,323 INFO L85 PathProgramCache]: Analyzing trace with hash -902976276, now seen corresponding path program 1 times [2021-10-28 09:12:50,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:50,325 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229506416] [2021-10-28 09:12:50,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:50,327 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:50,464 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:12:50,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:50,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229506416] [2021-10-28 09:12:50,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229506416] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:50,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468430030] [2021-10-28 09:12:50,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:50,470 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:50,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:50,476 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:12:50,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:12:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:50,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:12:50,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:12:50,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:12:50,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468430030] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:50,749 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:12:50,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-10-28 09:12:50,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284340190] [2021-10-28 09:12:50,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:12:50,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:50,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:12:50,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:12:50,752 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:50,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:12:50,786 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2021-10-28 09:12:50,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:12:50,787 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-28 09:12:50,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:12:50,788 INFO L225 Difference]: With dead ends: 26 [2021-10-28 09:12:50,788 INFO L226 Difference]: Without dead ends: 17 [2021-10-28 09:12:50,790 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:12:50,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-28 09:12:50,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-10-28 09:12:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:50,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-28 09:12:50,798 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2021-10-28 09:12:50,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:12:50,798 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-28 09:12:50,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:50,799 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-28 09:12:50,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 09:12:50,800 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:12:50,800 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:12:50,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:51,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:51,025 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:12:51,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:51,025 INFO L85 PathProgramCache]: Analyzing trace with hash -16551058, now seen corresponding path program 2 times [2021-10-28 09:12:51,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:51,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628561277] [2021-10-28 09:12:51,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:51,026 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:51,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:12:51,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:51,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628561277] [2021-10-28 09:12:51,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628561277] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:51,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287049365] [2021-10-28 09:12:51,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:12:51,150 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:51,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:51,152 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:12:51,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:12:51,216 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:12:51,216 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:12:51,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:12:51,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:12:51,364 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:12:51,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287049365] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:51,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:12:51,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2021-10-28 09:12:51,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313976633] [2021-10-28 09:12:51,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:12:51,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:51,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:12:51,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:12:51,371 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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) [2021-10-28 09:12:51,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:12:51,419 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-10-28 09:12:51,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:12:51,419 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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 15 [2021-10-28 09:12:51,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:12:51,420 INFO L225 Difference]: With dead ends: 30 [2021-10-28 09:12:51,421 INFO L226 Difference]: Without dead ends: 19 [2021-10-28 09:12:51,422 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:12:51,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-28 09:12:51,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-10-28 09:12:51,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 17 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) [2021-10-28 09:12:51,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-28 09:12:51,429 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 15 [2021-10-28 09:12:51,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:12:51,429 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-28 09:12:51,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 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) [2021-10-28 09:12:51,430 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-28 09:12:51,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 09:12:51,432 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:12:51,432 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:12:51,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:51,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:51,655 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:12:51,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:51,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1434558832, now seen corresponding path program 3 times [2021-10-28 09:12:51,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:51,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203183640] [2021-10-28 09:12:51,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:51,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:51,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:51,771 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:12:51,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:51,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203183640] [2021-10-28 09:12:51,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203183640] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:51,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540807858] [2021-10-28 09:12:51,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:12:51,773 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:51,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:51,774 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:12:51,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:12:51,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-28 09:12:51,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:12:51,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-28 09:12:51,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:12:52,004 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-28 09:12:52,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540807858] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:52,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:12:52,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2021-10-28 09:12:52,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979425117] [2021-10-28 09:12:52,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:12:52,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:52,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:12:52,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:12:52,009 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:52,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:12:52,340 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2021-10-28 09:12:52,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-28 09:12:52,340 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 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 17 [2021-10-28 09:12:52,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:12:52,341 INFO L225 Difference]: With dead ends: 57 [2021-10-28 09:12:52,342 INFO L226 Difference]: Without dead ends: 44 [2021-10-28 09:12:52,342 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=207, Invalid=393, Unknown=0, NotChecked=0, Total=600 [2021-10-28 09:12:52,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-28 09:12:52,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2021-10-28 09:12:52,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1) internal successors, (33), 30 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:52,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2021-10-28 09:12:52,349 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 17 [2021-10-28 09:12:52,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:12:52,349 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2021-10-28 09:12:52,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 10 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:52,350 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2021-10-28 09:12:52,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-28 09:12:52,351 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:12:52,351 INFO L513 BasicCegarLoop]: trace histogram [8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:12:52,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-10-28 09:12:52,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:52,560 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:12:52,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:52,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1316009506, now seen corresponding path program 4 times [2021-10-28 09:12:52,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:52,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005973641] [2021-10-28 09:12:52,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:52,561 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:52,641 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 43 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-28 09:12:52,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:52,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005973641] [2021-10-28 09:12:52,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005973641] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:52,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47091957] [2021-10-28 09:12:52,642 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:12:52,643 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:52,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:52,644 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:12:52,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:12:52,708 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:12:52,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:12:52,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:12:52,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:12:52,916 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 43 proven. 16 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-28 09:12:52,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47091957] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:52,917 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:12:52,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-28 09:12:52,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762205612] [2021-10-28 09:12:52,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:12:52,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:52,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:12:52,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:12:52,920 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:52,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:12:52,957 INFO L93 Difference]: Finished difference Result 54 states and 59 transitions. [2021-10-28 09:12:52,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:12:52,960 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-28 09:12:52,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:12:52,961 INFO L225 Difference]: With dead ends: 54 [2021-10-28 09:12:52,961 INFO L226 Difference]: Without dead ends: 37 [2021-10-28 09:12:52,962 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:12:52,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-28 09:12:52,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2021-10-28 09:12:52,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:52,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2021-10-28 09:12:52,968 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 30 [2021-10-28 09:12:52,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:12:52,968 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2021-10-28 09:12:52,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:52,969 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2021-10-28 09:12:52,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 09:12:52,970 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:12:52,970 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:12:53,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:53,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:53,196 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:12:53,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:53,197 INFO L85 PathProgramCache]: Analyzing trace with hash 158921246, now seen corresponding path program 5 times [2021-10-28 09:12:53,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:53,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472967950] [2021-10-28 09:12:53,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:53,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:53,282 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 63 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-28 09:12:53,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:53,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472967950] [2021-10-28 09:12:53,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472967950] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:53,283 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218770048] [2021-10-28 09:12:53,283 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:12:53,283 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:53,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:53,284 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:12:53,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-28 09:12:53,384 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2021-10-28 09:12:53,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:12:53,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:12:53,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:12:53,603 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 63 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-10-28 09:12:53,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218770048] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:53,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:12:53,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-28 09:12:53,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553042555] [2021-10-28 09:12:53,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:12:53,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:53,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:12:53,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:12:53,611 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:53,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:12:53,654 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2021-10-28 09:12:53,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:12:53,655 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-28 09:12:53,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:12:53,660 INFO L225 Difference]: With dead ends: 60 [2021-10-28 09:12:53,660 INFO L226 Difference]: Without dead ends: 41 [2021-10-28 09:12:53,661 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:12:53,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-28 09:12:53,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-10-28 09:12:53,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 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) [2021-10-28 09:12:53,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-28 09:12:53,676 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 34 [2021-10-28 09:12:53,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:12:53,677 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-28 09:12:53,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:53,677 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-28 09:12:53,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-28 09:12:53,682 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:12:53,685 INFO L513 BasicCegarLoop]: trace histogram [12, 12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:12:53,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:53,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:53,900 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:12:53,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:53,900 INFO L85 PathProgramCache]: Analyzing trace with hash -244827298, now seen corresponding path program 6 times [2021-10-28 09:12:53,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:53,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016432093] [2021-10-28 09:12:53,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:53,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:54,024 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 87 proven. 36 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-10-28 09:12:54,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:54,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016432093] [2021-10-28 09:12:54,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016432093] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:54,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506531167] [2021-10-28 09:12:54,025 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:12:54,025 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:54,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:54,026 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:12:54,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-28 09:12:54,119 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-28 09:12:54,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:12:54,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:12:54,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:12:54,441 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 0 proven. 89 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-10-28 09:12:54,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506531167] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:54,441 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:12:54,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 14 [2021-10-28 09:12:54,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602694735] [2021-10-28 09:12:54,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-28 09:12:54,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:54,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-28 09:12:54,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:12:54,443 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 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) [2021-10-28 09:12:55,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:12:55,062 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2021-10-28 09:12:55,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-28 09:12:55,062 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 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) Word has length 38 [2021-10-28 09:12:55,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:12:55,063 INFO L225 Difference]: With dead ends: 101 [2021-10-28 09:12:55,063 INFO L226 Difference]: Without dead ends: 80 [2021-10-28 09:12:55,065 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=669, Invalid=1401, Unknown=0, NotChecked=0, Total=2070 [2021-10-28 09:12:55,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-28 09:12:55,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-10-28 09:12:55,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.0677966101694916) internal successors, (63), 59 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:55,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2021-10-28 09:12:55,076 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 38 [2021-10-28 09:12:55,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:12:55,076 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2021-10-28 09:12:55,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 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) [2021-10-28 09:12:55,076 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2021-10-28 09:12:55,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-10-28 09:12:55,078 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:12:55,078 INFO L513 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:12:55,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:55,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:55,301 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:12:55,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:55,301 INFO L85 PathProgramCache]: Analyzing trace with hash -2099079880, now seen corresponding path program 7 times [2021-10-28 09:12:55,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:55,301 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94011744] [2021-10-28 09:12:55,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:55,302 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:55,425 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 229 proven. 49 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-10-28 09:12:55,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:55,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94011744] [2021-10-28 09:12:55,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94011744] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:55,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742911551] [2021-10-28 09:12:55,426 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:12:55,426 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:55,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:55,432 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:12:55,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-28 09:12:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:55,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:12:55,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:12:55,889 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 229 proven. 49 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-10-28 09:12:55,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742911551] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:55,890 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:12:55,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-28 09:12:55,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073456141] [2021-10-28 09:12:55,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 09:12:55,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:55,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 09:12:55,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=199, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:12:55,892 INFO L87 Difference]: Start difference. First operand 60 states and 63 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:55,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:12:55,940 INFO L93 Difference]: Finished difference Result 109 states and 117 transitions. [2021-10-28 09:12:55,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:12:55,940 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-10-28 09:12:55,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:12:55,941 INFO L225 Difference]: With dead ends: 109 [2021-10-28 09:12:55,941 INFO L226 Difference]: Without dead ends: 69 [2021-10-28 09:12:55,942 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=199, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:12:55,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-10-28 09:12:55,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 66. [2021-10-28 09:12:55,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.0615384615384615) internal successors, (69), 65 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:55,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2021-10-28 09:12:55,952 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 59 [2021-10-28 09:12:55,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:12:55,952 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2021-10-28 09:12:55,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:55,952 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2021-10-28 09:12:55,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-28 09:12:55,953 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:12:55,954 INFO L513 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:12:55,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:56,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:56,180 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:12:56,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:56,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1083775622, now seen corresponding path program 8 times [2021-10-28 09:12:56,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:56,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823526782] [2021-10-28 09:12:56,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:56,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:56,331 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 293 proven. 64 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-10-28 09:12:56,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:56,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823526782] [2021-10-28 09:12:56,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823526782] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:56,332 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644103093] [2021-10-28 09:12:56,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:12:56,333 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:56,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:56,333 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:12:56,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-28 09:12:56,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:12:56,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:12:56,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:12:56,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:12:56,773 INFO L134 CoverageAnalysis]: Checked inductivity of 636 backedges. 293 proven. 64 refuted. 0 times theorem prover too weak. 279 trivial. 0 not checked. [2021-10-28 09:12:56,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644103093] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:56,774 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:12:56,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-28 09:12:56,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604222449] [2021-10-28 09:12:56,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-28 09:12:56,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:56,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-28 09:12:56,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=246, Unknown=0, NotChecked=0, Total=420 [2021-10-28 09:12:56,776 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 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) [2021-10-28 09:12:56,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:12:56,827 INFO L93 Difference]: Finished difference Result 119 states and 127 transitions. [2021-10-28 09:12:56,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:12:56,827 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 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) Word has length 65 [2021-10-28 09:12:56,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:12:56,828 INFO L225 Difference]: With dead ends: 119 [2021-10-28 09:12:56,828 INFO L226 Difference]: Without dead ends: 75 [2021-10-28 09:12:56,829 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=174, Invalid=246, Unknown=0, NotChecked=0, Total=420 [2021-10-28 09:12:56,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-28 09:12:56,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2021-10-28 09:12:56,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.056338028169014) internal successors, (75), 71 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:56,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2021-10-28 09:12:56,838 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 65 [2021-10-28 09:12:56,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:12:56,839 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2021-10-28 09:12:56,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.3333333333333335) internal successors, (49), 21 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) [2021-10-28 09:12:56,839 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2021-10-28 09:12:56,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-28 09:12:56,840 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:12:56,840 INFO L513 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:12:56,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:57,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-28 09:12:57,053 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:12:57,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:57,053 INFO L85 PathProgramCache]: Analyzing trace with hash 832519228, now seen corresponding path program 9 times [2021-10-28 09:12:57,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:57,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710299553] [2021-10-28 09:12:57,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:57,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:57,190 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 365 proven. 81 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2021-10-28 09:12:57,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:57,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710299553] [2021-10-28 09:12:57,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710299553] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:57,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388175208] [2021-10-28 09:12:57,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:12:57,191 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:57,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:57,196 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:12:57,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-28 09:12:57,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2021-10-28 09:12:57,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:12:57,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:12:57,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:12:57,756 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 367 proven. 81 refuted. 0 times theorem prover too weak. 347 trivial. 0 not checked. [2021-10-28 09:12:57,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388175208] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:57,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:12:57,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-28 09:12:57,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500913111] [2021-10-28 09:12:57,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-28 09:12:57,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:57,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 09:12:57,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=298, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:12:57,759 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:57,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:12:57,825 INFO L93 Difference]: Finished difference Result 129 states and 137 transitions. [2021-10-28 09:12:57,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 09:12:57,825 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-10-28 09:12:57,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:12:57,826 INFO L225 Difference]: With dead ends: 129 [2021-10-28 09:12:57,827 INFO L226 Difference]: Without dead ends: 81 [2021-10-28 09:12:57,828 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=223, Invalid=329, Unknown=0, NotChecked=0, Total=552 [2021-10-28 09:12:57,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-28 09:12:57,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2021-10-28 09:12:57,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.051948051948052) internal successors, (81), 77 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:57,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2021-10-28 09:12:57,837 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 71 [2021-10-28 09:12:57,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:12:57,838 INFO L470 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2021-10-28 09:12:57,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.5217391304347827) internal successors, (58), 23 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:57,838 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2021-10-28 09:12:57,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-10-28 09:12:57,839 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:12:57,840 INFO L513 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:12:57,878 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:58,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:58,056 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:12:58,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:58,057 INFO L85 PathProgramCache]: Analyzing trace with hash -202032770, now seen corresponding path program 10 times [2021-10-28 09:12:58,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:58,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065776799] [2021-10-28 09:12:58,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:58,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:58,162 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-10-28 09:12:58,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:58,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065776799] [2021-10-28 09:12:58,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065776799] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:58,162 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925628942] [2021-10-28 09:12:58,163 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:12:58,163 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:58,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:58,172 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:12:58,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-28 09:12:58,358 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:12:58,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:12:58,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:12:58,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:12:58,869 INFO L134 CoverageAnalysis]: Checked inductivity of 972 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-10-28 09:12:58,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925628942] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:58,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:12:58,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-10-28 09:12:58,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16461804] [2021-10-28 09:12:58,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:12:58,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:12:58,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:12:58,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:12:58,872 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 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) [2021-10-28 09:12:58,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:12:58,904 INFO L93 Difference]: Finished difference Result 127 states and 132 transitions. [2021-10-28 09:12:58,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:12:58,905 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 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) Word has length 77 [2021-10-28 09:12:58,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:12:58,906 INFO L225 Difference]: With dead ends: 127 [2021-10-28 09:12:58,906 INFO L226 Difference]: Without dead ends: 123 [2021-10-28 09:12:58,907 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=61, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:12:58,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-28 09:12:58,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 101. [2021-10-28 09:12:58,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.05) internal successors, (105), 100 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:12:58,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 105 transitions. [2021-10-28 09:12:58,918 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 105 transitions. Word has length 77 [2021-10-28 09:12:58,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:12:58,918 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 105 transitions. [2021-10-28 09:12:58,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 11 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) [2021-10-28 09:12:58,919 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 105 transitions. [2021-10-28 09:12:58,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-28 09:12:58,920 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:12:58,921 INFO L513 BasicCegarLoop]: trace histogram [40, 40, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:12:58,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-28 09:12:59,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-10-28 09:12:59,138 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:12:59,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:12:59,138 INFO L85 PathProgramCache]: Analyzing trace with hash -112220578, now seen corresponding path program 11 times [2021-10-28 09:12:59,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:12:59,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460927422] [2021-10-28 09:12:59,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:12:59,139 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:12:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:12:59,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1742 backedges. 0 proven. 1342 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-28 09:12:59,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:12:59,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460927422] [2021-10-28 09:12:59,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460927422] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:12:59,242 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379152953] [2021-10-28 09:12:59,242 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:12:59,242 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:12:59,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:12:59,243 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:12:59,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-28 09:12:59,508 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 35 check-sat command(s) [2021-10-28 09:12:59,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:12:59,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:12:59,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:13:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1742 backedges. 0 proven. 1342 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-10-28 09:13:00,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379152953] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:13:00,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:13:00,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-10-28 09:13:00,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110512606] [2021-10-28 09:13:00,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:13:00,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:00,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:13:00,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:13:00,229 INFO L87 Difference]: Start difference. First operand 101 states and 105 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:00,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:00,269 INFO L93 Difference]: Finished difference Result 150 states and 156 transitions. [2021-10-28 09:13:00,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:13:00,270 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2021-10-28 09:13:00,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:13:00,272 INFO L225 Difference]: With dead ends: 150 [2021-10-28 09:13:00,272 INFO L226 Difference]: Without dead ends: 146 [2021-10-28 09:13:00,272 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:13:00,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2021-10-28 09:13:00,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 124. [2021-10-28 09:13:00,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 123 states have (on average 1.048780487804878) internal successors, (129), 123 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:00,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 129 transitions. [2021-10-28 09:13:00,284 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 129 transitions. Word has length 100 [2021-10-28 09:13:00,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:13:00,284 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 129 transitions. [2021-10-28 09:13:00,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:00,285 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 129 transitions. [2021-10-28 09:13:00,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-10-28 09:13:00,286 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:13:00,286 INFO L513 BasicCegarLoop]: trace histogram [50, 50, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:13:00,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-28 09:13:00,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-28 09:13:00,512 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:13:00,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:00,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1202143874, now seen corresponding path program 12 times [2021-10-28 09:13:00,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:00,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464034871] [2021-10-28 09:13:00,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:00,513 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:13:00,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2735 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2021-10-28 09:13:00,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:13:00,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464034871] [2021-10-28 09:13:00,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464034871] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:13:00,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585495721] [2021-10-28 09:13:00,696 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-28 09:13:00,696 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:13:00,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:13:00,697 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:13:00,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-28 09:13:01,074 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 46 check-sat command(s) [2021-10-28 09:13:01,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:13:01,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-28 09:13:01,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:13:01,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2735 backedges. 0 proven. 2235 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2021-10-28 09:13:01,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585495721] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:13:01,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:13:01,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-28 09:13:01,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117161428] [2021-10-28 09:13:01,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:13:01,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:01,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:13:01,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:13:01,839 INFO L87 Difference]: Start difference. First operand 124 states and 129 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:01,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:01,888 INFO L93 Difference]: Finished difference Result 173 states and 180 transitions. [2021-10-28 09:13:01,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:13:01,889 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 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 123 [2021-10-28 09:13:01,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:13:01,891 INFO L225 Difference]: With dead ends: 173 [2021-10-28 09:13:01,891 INFO L226 Difference]: Without dead ends: 169 [2021-10-28 09:13:01,892 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:13:01,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-10-28 09:13:01,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 147. [2021-10-28 09:13:01,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.047945205479452) internal successors, (153), 146 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:01,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 153 transitions. [2021-10-28 09:13:01,904 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 153 transitions. Word has length 123 [2021-10-28 09:13:01,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:13:01,905 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 153 transitions. [2021-10-28 09:13:01,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:01,905 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 153 transitions. [2021-10-28 09:13:01,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-10-28 09:13:01,907 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:13:01,907 INFO L513 BasicCegarLoop]: trace histogram [60, 60, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:13:01,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-28 09:13:02,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:13:02,124 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:13:02,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:02,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1019764130, now seen corresponding path program 13 times [2021-10-28 09:13:02,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:02,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092710111] [2021-10-28 09:13:02,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:02,125 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:13:02,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3951 backedges. 0 proven. 3351 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2021-10-28 09:13:02,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:13:02,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092710111] [2021-10-28 09:13:02,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092710111] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:13:02,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58265922] [2021-10-28 09:13:02,353 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-28 09:13:02,354 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:13:02,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:13:02,355 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:13:02,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-28 09:13:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:13:02,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 09:13:02,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:13:03,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3951 backedges. 0 proven. 3351 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2021-10-28 09:13:03,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58265922] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:13:03,654 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:13:03,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-10-28 09:13:03,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455531455] [2021-10-28 09:13:03,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-28 09:13:03,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:03,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-28 09:13:03,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=157, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:13:03,656 INFO L87 Difference]: Start difference. First operand 147 states and 153 transitions. Second operand has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:03,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:03,731 INFO L93 Difference]: Finished difference Result 196 states and 204 transitions. [2021-10-28 09:13:03,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:13:03,731 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-10-28 09:13:03,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:13:03,733 INFO L225 Difference]: With dead ends: 196 [2021-10-28 09:13:03,733 INFO L226 Difference]: Without dead ends: 192 [2021-10-28 09:13:03,735 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=157, Unknown=0, NotChecked=0, Total=272 [2021-10-28 09:13:03,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-28 09:13:03,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 170. [2021-10-28 09:13:03,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.047337278106509) internal successors, (177), 169 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:03,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 177 transitions. [2021-10-28 09:13:03,751 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 177 transitions. Word has length 146 [2021-10-28 09:13:03,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:13:03,752 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 177 transitions. [2021-10-28 09:13:03,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.117647058823529) internal successors, (70), 17 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:03,752 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 177 transitions. [2021-10-28 09:13:03,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-10-28 09:13:03,754 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:13:03,754 INFO L513 BasicCegarLoop]: trace histogram [70, 70, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:13:03,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-28 09:13:03,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:13:03,968 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:13:03,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:03,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1127563646, now seen corresponding path program 14 times [2021-10-28 09:13:03,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:03,969 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233337288] [2021-10-28 09:13:03,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:03,969 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:04,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:13:04,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5390 backedges. 0 proven. 4690 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2021-10-28 09:13:04,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:13:04,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233337288] [2021-10-28 09:13:04,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233337288] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:13:04,174 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225229926] [2021-10-28 09:13:04,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:13:04,174 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:13:04,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:13:04,175 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:13:04,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-28 09:13:04,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:13:04,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:13:04,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-28 09:13:04,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:13:05,753 INFO L134 CoverageAnalysis]: Checked inductivity of 5390 backedges. 0 proven. 4690 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked. [2021-10-28 09:13:05,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225229926] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:13:05,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:13:05,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-10-28 09:13:05,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067123709] [2021-10-28 09:13:05,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-28 09:13:05,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:05,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-28 09:13:05,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=199, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:13:05,755 INFO L87 Difference]: Start difference. First operand 170 states and 177 transitions. Second operand has 19 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 19 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:05,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:05,808 INFO L93 Difference]: Finished difference Result 219 states and 228 transitions. [2021-10-28 09:13:05,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:13:05,809 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 19 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 169 [2021-10-28 09:13:05,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:13:05,811 INFO L225 Difference]: With dead ends: 219 [2021-10-28 09:13:05,811 INFO L226 Difference]: Without dead ends: 215 [2021-10-28 09:13:05,812 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=143, Invalid=199, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:13:05,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-10-28 09:13:05,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 193. [2021-10-28 09:13:05,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.046875) internal successors, (201), 192 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:05,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 201 transitions. [2021-10-28 09:13:05,827 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 201 transitions. Word has length 169 [2021-10-28 09:13:05,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:13:05,828 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 201 transitions. [2021-10-28 09:13:05,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2105263157894735) internal successors, (80), 19 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:05,828 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 201 transitions. [2021-10-28 09:13:05,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-10-28 09:13:05,831 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:13:05,831 INFO L513 BasicCegarLoop]: trace histogram [80, 80, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:13:05,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-28 09:13:06,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-28 09:13:06,056 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:13:06,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:06,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1903780258, now seen corresponding path program 15 times [2021-10-28 09:13:06,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:06,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774465416] [2021-10-28 09:13:06,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:06,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:13:06,258 INFO L134 CoverageAnalysis]: Checked inductivity of 7052 backedges. 0 proven. 6252 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2021-10-28 09:13:06,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:13:06,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774465416] [2021-10-28 09:13:06,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774465416] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:13:06,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705014356] [2021-10-28 09:13:06,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-28 09:13:06,259 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:13:06,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:13:06,264 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:13:06,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-28 09:13:07,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 69 check-sat command(s) [2021-10-28 09:13:07,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:13:07,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-28 09:13:07,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:13:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 7052 backedges. 0 proven. 6252 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2021-10-28 09:13:08,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705014356] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:13:08,316 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:13:08,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-10-28 09:13:08,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237227503] [2021-10-28 09:13:08,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-28 09:13:08,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:08,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-28 09:13:08,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=246, Unknown=0, NotChecked=0, Total=420 [2021-10-28 09:13:08,320 INFO L87 Difference]: Start difference. First operand 193 states and 201 transitions. Second operand has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:08,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:08,381 INFO L93 Difference]: Finished difference Result 242 states and 252 transitions. [2021-10-28 09:13:08,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:13:08,381 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 192 [2021-10-28 09:13:08,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:13:08,383 INFO L225 Difference]: With dead ends: 242 [2021-10-28 09:13:08,383 INFO L226 Difference]: Without dead ends: 238 [2021-10-28 09:13:08,384 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=174, Invalid=246, Unknown=0, NotChecked=0, Total=420 [2021-10-28 09:13:08,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-10-28 09:13:08,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 216. [2021-10-28 09:13:08,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 215 states have (on average 1.0465116279069768) internal successors, (225), 215 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:08,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 225 transitions. [2021-10-28 09:13:08,403 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 225 transitions. Word has length 192 [2021-10-28 09:13:08,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:13:08,403 INFO L470 AbstractCegarLoop]: Abstraction has 216 states and 225 transitions. [2021-10-28 09:13:08,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.285714285714286) internal successors, (90), 21 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:08,404 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 225 transitions. [2021-10-28 09:13:08,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-10-28 09:13:08,406 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:13:08,407 INFO L513 BasicCegarLoop]: trace histogram [90, 90, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:13:08,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-28 09:13:08,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-28 09:13:08,620 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:13:08,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:08,621 INFO L85 PathProgramCache]: Analyzing trace with hash 684377470, now seen corresponding path program 16 times [2021-10-28 09:13:08,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:08,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313809261] [2021-10-28 09:13:08,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:08,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:13:08,866 INFO L134 CoverageAnalysis]: Checked inductivity of 8937 backedges. 0 proven. 8037 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-10-28 09:13:08,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:13:08,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313809261] [2021-10-28 09:13:08,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313809261] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:13:08,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859159802] [2021-10-28 09:13:08,867 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-28 09:13:08,867 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:13:08,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:13:08,868 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:13:08,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-28 09:13:09,632 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-28 09:13:09,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:13:09,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-28 09:13:09,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:13:10,878 INFO L134 CoverageAnalysis]: Checked inductivity of 8937 backedges. 0 proven. 8037 refuted. 0 times theorem prover too weak. 900 trivial. 0 not checked. [2021-10-28 09:13:10,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859159802] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:13:10,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:13:10,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-10-28 09:13:10,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000948256] [2021-10-28 09:13:10,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-28 09:13:10,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:10,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 09:13:10,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=298, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:13:10,882 INFO L87 Difference]: Start difference. First operand 216 states and 225 transitions. Second operand has 23 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 23 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:10,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:10,965 INFO L93 Difference]: Finished difference Result 265 states and 276 transitions. [2021-10-28 09:13:10,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 09:13:10,965 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 23 states have internal predecessors, (100), 0 states have call successors, (0), 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 215 [2021-10-28 09:13:10,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:13:10,968 INFO L225 Difference]: With dead ends: 265 [2021-10-28 09:13:10,968 INFO L226 Difference]: Without dead ends: 261 [2021-10-28 09:13:10,968 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=223, Invalid=329, Unknown=0, NotChecked=0, Total=552 [2021-10-28 09:13:10,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-10-28 09:13:10,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 239. [2021-10-28 09:13:10,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.046218487394958) internal successors, (249), 238 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:10,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 249 transitions. [2021-10-28 09:13:10,990 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 249 transitions. Word has length 215 [2021-10-28 09:13:10,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:13:10,991 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 249 transitions. [2021-10-28 09:13:10,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 23 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:10,991 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 249 transitions. [2021-10-28 09:13:10,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2021-10-28 09:13:10,994 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:13:10,995 INFO L513 BasicCegarLoop]: trace histogram [100, 100, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:13:11,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-28 09:13:11,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-28 09:13:11,220 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:13:11,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:13:11,221 INFO L85 PathProgramCache]: Analyzing trace with hash -16999842, now seen corresponding path program 17 times [2021-10-28 09:13:11,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:13:11,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490528754] [2021-10-28 09:13:11,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:13:11,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:13:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:13:15,471 INFO L134 CoverageAnalysis]: Checked inductivity of 11045 backedges. 10917 proven. 119 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-28 09:13:15,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:13:15,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490528754] [2021-10-28 09:13:15,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490528754] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:13:15,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096551780] [2021-10-28 09:13:15,472 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-28 09:13:15,472 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:13:15,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:13:15,473 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:13:15,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-28 09:13:16,343 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 81 check-sat command(s) [2021-10-28 09:13:16,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:13:16,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 104 conjunts are in the unsatisfiable core [2021-10-28 09:13:16,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:13:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 11045 backedges. 11036 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-28 09:13:17,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096551780] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:13:17,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:13:17,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [104] imperfect sequences [104] total 106 [2021-10-28 09:13:17,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611688875] [2021-10-28 09:13:17,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 104 states [2021-10-28 09:13:17,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:13:17,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants. [2021-10-28 09:13:17,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5261, Invalid=5869, Unknown=0, NotChecked=0, Total=11130 [2021-10-28 09:13:17,194 INFO L87 Difference]: Start difference. First operand 239 states and 249 transitions. Second operand has 104 states, 104 states have (on average 2.2884615384615383) internal successors, (238), 104 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:18,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:13:18,744 INFO L93 Difference]: Finished difference Result 9779 states and 10239 transitions. [2021-10-28 09:13:18,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2021-10-28 09:13:18,745 INFO L78 Accepts]: Start accepts. Automaton has has 104 states, 104 states have (on average 2.2884615384615383) internal successors, (238), 104 states have internal predecessors, (238), 0 states have call successors, (0), 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 238 [2021-10-28 09:13:18,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:13:18,745 INFO L225 Difference]: With dead ends: 9779 [2021-10-28 09:13:18,746 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 09:13:18,761 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=5366, Invalid=5976, Unknown=0, NotChecked=0, Total=11342 [2021-10-28 09:13:18,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 09:13:18,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 09:13:18,762 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) [2021-10-28 09:13:18,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 09:13:18,763 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 238 [2021-10-28 09:13:18,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:13:18,763 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:13:18,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 104 states, 104 states have (on average 2.2884615384615383) internal successors, (238), 104 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:13:18,764 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:13:18,764 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 09:13:18,766 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:13:18,808 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-28 09:13:18,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:13:18,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 09:13:19,002 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:13:19,034 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:15:01,345 WARN L207 SmtUtils]: Spent 1.71 m on a formula simplification. DAG size of input: 5172 DAG size of output: 2205 [2021-10-28 09:15:01,362 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:15:02,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:16:26,171 WARN L207 SmtUtils]: Spent 1.40 m on a formula simplification. DAG size of input: 2186 DAG size of output: 363 [2021-10-28 09:16:31,926 WARN L207 SmtUtils]: Spent 5.75 s on a formula simplification. DAG size of input: 663 DAG size of output: 59 [2021-10-28 09:16:31,929 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 09:16:31,929 INFO L857 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-10-28 09:16:31,929 INFO L857 garLoopResultBuilder]: For program point L31-2(lines 31 35) no Hoare annotation was computed. [2021-10-28 09:16:31,929 INFO L853 garLoopResultBuilder]: At program point L31-3(lines 31 35) the Hoare annotation is: (let ((.cse0 (<= 10 ULTIMATE.start_main_~m~0)) (.cse1 (<= 10 ULTIMATE.start_main_~n~0))) (or (and .cse0 .cse1 (<= 100 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 60 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~i~0 6)) (and .cse0 .cse1 (<= 20 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~i~0 2)) (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 4) (<= 40 ULTIMATE.start_main_~k~0)) (and .cse0 (<= 0 ULTIMATE.start_main_~k~0) .cse1 (= ULTIMATE.start_main_~i~0 0)) (and .cse0 .cse1 (<= 70 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~i~0 7)) (and .cse0 (<= ULTIMATE.start_main_~i~0 1) .cse1 (<= 10 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 5) (<= 50 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= ULTIMATE.start_main_~i~0 8) (<= 80 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 30 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~i~0 3)) (and .cse0 .cse1 (<= 90 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~i~0 9)))) [2021-10-28 09:16:31,930 INFO L857 garLoopResultBuilder]: For program point L31-4(lines 31 35) no Hoare annotation was computed. [2021-10-28 09:16:31,930 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-28 09:16:31,930 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 09:16:31,930 INFO L857 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2021-10-28 09:16:31,930 INFO L857 garLoopResultBuilder]: For program point L32-2(lines 32 34) no Hoare annotation was computed. [2021-10-28 09:16:31,930 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 09:16:31,931 INFO L853 garLoopResultBuilder]: At program point L32-3(lines 32 34) the Hoare annotation is: (let ((.cse16 (<= 60 ULTIMATE.start_main_~k~0)) (.cse2 (<= 20 ULTIMATE.start_main_~k~0)) (.cse12 (<= 70 ULTIMATE.start_main_~k~0)) (.cse23 (<= 30 ULTIMATE.start_main_~k~0)) (.cse29 (<= 80 ULTIMATE.start_main_~k~0)) (.cse10 (<= ULTIMATE.start_main_~j~0 3)) (.cse7 (<= ULTIMATE.start_main_~j~0 7)) (.cse28 (<= 10 ULTIMATE.start_main_~k~0)) (.cse30 (<= 90 ULTIMATE.start_main_~k~0)) (.cse11 (<= ULTIMATE.start_main_~j~0 8)) (.cse21 (<= 40 ULTIMATE.start_main_~k~0)) (.cse25 (<= 50 ULTIMATE.start_main_~k~0)) (.cse4 (= ULTIMATE.start_main_~j~0 0)) (.cse17 (<= ULTIMATE.start_main_~i~0 5)) (.cse13 (<= ULTIMATE.start_main_~i~0 7)) (.cse6 (<= ULTIMATE.start_main_~j~0 5)) (.cse27 (<= ULTIMATE.start_main_~j~0 1)) (.cse18 (<= (+ ULTIMATE.start_main_~i~0 1) ULTIMATE.start_main_~n~0)) (.cse24 (<= ULTIMATE.start_main_~i~0 4)) (.cse26 (<= ULTIMATE.start_main_~j~0 6)) (.cse19 (<= ULTIMATE.start_main_~i~0 8)) (.cse3 (<= ULTIMATE.start_main_~i~0 2)) (.cse22 (= ULTIMATE.start_main_~i~0 0)) (.cse5 (<= ULTIMATE.start_main_~i~0 6)) (.cse14 (<= ULTIMATE.start_main_~j~0 9)) (.cse9 (<= ULTIMATE.start_main_~i~0 1)) (.cse20 (<= ULTIMATE.start_main_~j~0 2)) (.cse0 (<= 10 ULTIMATE.start_main_~m~0)) (.cse1 (<= 10 ULTIMATE.start_main_~n~0)) (.cse8 (<= ULTIMATE.start_main_~i~0 3)) (.cse15 (<= ULTIMATE.start_main_~j~0 4))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse0 .cse1 (<= 65 ULTIMATE.start_main_~k~0) .cse5 .cse6) (and .cse0 .cse1 .cse7 (<= 37 ULTIMATE.start_main_~k~0) .cse8) (and .cse0 .cse9 .cse1 .cse10 (<= 13 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 68 ULTIMATE.start_main_~k~0) .cse11 .cse5) (and .cse0 .cse1 .cse12 .cse5) (and .cse0 (<= 79 ULTIMATE.start_main_~k~0) .cse1 .cse13 .cse14) (and .cse0 .cse9 .cse1 (<= 14 ULTIMATE.start_main_~k~0) .cse15) (and .cse0 .cse1 .cse16 .cse17) (and .cse0 .cse1 .cse18 (<= 94 ULTIMATE.start_main_~k~0) .cse15) (and .cse0 .cse1 (<= 54 ULTIMATE.start_main_~k~0) .cse17 .cse15) (and .cse0 .cse1 .cse18 (<= 97 ULTIMATE.start_main_~k~0) .cse7) (and .cse0 .cse1 .cse16 .cse5 .cse4) (and .cse0 .cse1 .cse18 .cse6 (<= 95 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 83 ULTIMATE.start_main_~k~0) .cse10 .cse19) (and .cse0 .cse1 .cse17 .cse20 (<= 52 ULTIMATE.start_main_~k~0)) (and .cse0 (<= 53 ULTIMATE.start_main_~k~0) .cse1 .cse17 .cse10) (and .cse0 .cse1 .cse21 .cse8) (and .cse0 .cse1 (<= 3 ULTIMATE.start_main_~k~0) .cse10 .cse22) (and .cse0 .cse1 (<= 39 ULTIMATE.start_main_~k~0) .cse8 .cse14) (and .cse0 .cse1 .cse23 .cse8 .cse4) (and .cse0 .cse1 .cse6 (<= 85 ULTIMATE.start_main_~k~0) .cse19) (and .cse0 .cse1 .cse24 .cse25) (and .cse0 .cse1 .cse26 .cse19 (<= 86 ULTIMATE.start_main_~k~0)) (and .cse0 .cse9 .cse1 .cse6 (<= 15 ULTIMATE.start_main_~k~0)) (and .cse0 .cse27 .cse1 .cse24 (<= 41 ULTIMATE.start_main_~k~0)) (and .cse0 .cse27 .cse1 (<= 21 ULTIMATE.start_main_~k~0) .cse3) (and .cse0 .cse1 (<= 25 ULTIMATE.start_main_~k~0) .cse6 .cse3) (and .cse0 .cse1 (<= 82 ULTIMATE.start_main_~k~0) .cse19 .cse20) (and .cse0 .cse9 .cse1 .cse28 .cse4) (and .cse0 .cse1 .cse24 .cse7 (<= 47 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse24 .cse20 (<= 42 ULTIMATE.start_main_~k~0)) (and (<= 29 ULTIMATE.start_main_~k~0) .cse0 .cse1 .cse3 .cse14) (and .cse0 .cse1 (<= 9 ULTIMATE.start_main_~k~0) .cse22 .cse14) (and .cse0 .cse1 .cse5 (<= 66 ULTIMATE.start_main_~k~0) .cse26) (and .cse0 .cse1 (<= 48 ULTIMATE.start_main_~k~0) .cse11 .cse24) (and .cse0 .cse9 .cse1 (<= 19 ULTIMATE.start_main_~k~0) .cse14) (and .cse0 .cse1 .cse11 (<= 28 ULTIMATE.start_main_~k~0) .cse3) (and .cse0 .cse1 (<= 7 ULTIMATE.start_main_~k~0) .cse7 .cse22) (and .cse0 .cse1 (<= 88 ULTIMATE.start_main_~k~0) .cse11 .cse19) (and .cse0 .cse1 .cse10 (<= 33 ULTIMATE.start_main_~k~0) .cse8) (and .cse0 .cse27 .cse1 .cse19 (<= 81 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse5 (<= 64 ULTIMATE.start_main_~k~0) .cse15) (and .cse0 .cse1 .cse19 .cse4 .cse29) (and .cse0 .cse9 .cse1 .cse2) (and .cse0 .cse1 .cse13 .cse10 (<= 73 ULTIMATE.start_main_~k~0)) (and .cse0 (<= 0 ULTIMATE.start_main_~k~0) .cse1 .cse22 .cse4) (and .cse0 .cse1 (<= 55 ULTIMATE.start_main_~k~0) .cse17 .cse6) (and .cse0 .cse1 (<= 5 ULTIMATE.start_main_~k~0) .cse6 .cse22) (and .cse0 .cse1 .cse24 (<= 44 ULTIMATE.start_main_~k~0) .cse15) (and .cse0 .cse9 .cse1 .cse11 (<= 18 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 23 ULTIMATE.start_main_~k~0) .cse10 .cse3) (and .cse0 .cse1 .cse12 .cse13 .cse4) (and .cse0 .cse27 .cse1 (<= 1 ULTIMATE.start_main_~k~0) .cse22) (and .cse0 .cse1 .cse11 (<= 38 ULTIMATE.start_main_~k~0) .cse8) (and .cse0 .cse1 (<= 59 ULTIMATE.start_main_~k~0) .cse17 .cse14) (and .cse0 .cse1 .cse26 .cse3 (<= 26 ULTIMATE.start_main_~k~0)) (and .cse0 (<= 92 ULTIMATE.start_main_~k~0) .cse1 .cse18 .cse20) (and .cse0 .cse1 .cse6 .cse8 (<= 35 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse23 .cse3) (and .cse0 .cse1 .cse18 (<= 96 ULTIMATE.start_main_~k~0) .cse26) (and (<= 87 ULTIMATE.start_main_~k~0) .cse0 .cse1 .cse7 .cse19) (and .cse0 .cse1 (<= 77 ULTIMATE.start_main_~k~0) .cse13 .cse7) (and .cse0 .cse27 .cse1 .cse8 (<= 31 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 89 ULTIMATE.start_main_~k~0) .cse19 .cse14) (and .cse0 .cse1 .cse13 (<= 72 ULTIMATE.start_main_~k~0) .cse20) (and .cse0 .cse1 (<= 57 ULTIMATE.start_main_~k~0) .cse17 .cse7) (and .cse0 .cse1 .cse18 (<= 93 ULTIMATE.start_main_~k~0) .cse10) (and .cse0 .cse1 .cse24 (<= 49 ULTIMATE.start_main_~k~0) .cse14) (and .cse0 .cse1 .cse11 .cse13 (<= 78 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse17 (<= 56 ULTIMATE.start_main_~k~0) .cse26) (and .cse0 .cse1 .cse18 .cse11 (<= 98 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse24 .cse10 (<= 43 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse11 .cse17 (<= 58 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse5 .cse7 (<= 67 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse30 .cse19) (and .cse0 .cse1 .cse13 .cse29) (and .cse0 (<= 63 ULTIMATE.start_main_~k~0) .cse1 .cse5 .cse10) (and .cse0 .cse1 .cse7 .cse3 (<= 27 ULTIMATE.start_main_~k~0)) (and .cse0 .cse27 .cse1 .cse18 (<= 91 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse18 (<= 100 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 32 ULTIMATE.start_main_~k~0) .cse8 .cse20) (and .cse0 .cse1 (<= 74 ULTIMATE.start_main_~k~0) .cse13 .cse15) (and .cse0 .cse1 (<= 2 ULTIMATE.start_main_~k~0) .cse22 .cse20) (and .cse0 .cse27 .cse1 (<= 61 ULTIMATE.start_main_~k~0) .cse5) (and (<= 36 ULTIMATE.start_main_~k~0) .cse0 .cse1 .cse26 .cse8) (and .cse0 .cse1 .cse13 .cse26 (<= 76 ULTIMATE.start_main_~k~0)) (and .cse0 .cse27 .cse1 .cse13 (<= 71 ULTIMATE.start_main_~k~0)) (and .cse0 .cse9 .cse1 .cse7 (<= 17 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse24 .cse6 (<= 45 ULTIMATE.start_main_~k~0)) (and .cse0 .cse9 .cse1 .cse26 (<= 16 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 22 ULTIMATE.start_main_~k~0) .cse3 .cse20) (and .cse0 .cse1 .cse22 .cse28) (and .cse0 .cse1 .cse30 .cse18 .cse4) (and .cse0 .cse1 (<= 6 ULTIMATE.start_main_~k~0) .cse22 .cse26) (and (<= 8 ULTIMATE.start_main_~k~0) .cse0 .cse1 .cse11 .cse22) (and .cse0 .cse1 .cse24 .cse21 .cse4) (and .cse0 .cse1 .cse17 .cse25 .cse4) (and .cse0 .cse27 .cse1 .cse17 (<= 51 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse13 (<= 75 ULTIMATE.start_main_~k~0) .cse6) (and .cse0 .cse1 .cse5 .cse20 (<= 62 ULTIMATE.start_main_~k~0)) (and .cse0 .cse9 .cse27 .cse1 (<= 11 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 .cse18 (<= 99 ULTIMATE.start_main_~k~0) .cse14) (and .cse0 .cse1 .cse24 .cse26 (<= 46 ULTIMATE.start_main_~k~0)) (and .cse0 .cse1 (<= 84 ULTIMATE.start_main_~k~0) .cse19 .cse15) (and .cse0 .cse1 (<= 24 ULTIMATE.start_main_~k~0) .cse3 .cse15) (and .cse0 (<= 4 ULTIMATE.start_main_~k~0) .cse1 .cse22 .cse15) (and .cse0 .cse1 (<= 69 ULTIMATE.start_main_~k~0) .cse5 .cse14) (and .cse0 .cse9 .cse1 (<= 12 ULTIMATE.start_main_~k~0) .cse20) (and .cse0 .cse1 .cse8 .cse15 (<= 34 ULTIMATE.start_main_~k~0)))) [2021-10-28 09:16:31,932 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 09:16:31,932 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-28 09:16:31,932 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-28 09:16:31,932 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (<= 10 ULTIMATE.start_main_~n~0) [2021-10-28 09:16:31,932 INFO L860 garLoopResultBuilder]: At program point L37(lines 24 38) the Hoare annotation is: true [2021-10-28 09:16:31,936 INFO L731 BasicCegarLoop]: Path program histogram: [17, 1, 1] [2021-10-28 09:16:31,938 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:16:32,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:16:32 BoogieIcfgContainer [2021-10-28 09:16:32,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:16:32,037 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:16:32,037 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:16:32,037 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:16:32,038 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:12:49" (3/4) ... [2021-10-28 09:16:32,041 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:16:32,052 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-28 09:16:32,053 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:16:32,053 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:16:32,053 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:16:32,095 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:16:32,096 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:16:32,097 INFO L168 Benchmark]: Toolchain (without parser) took 223143.59 ms. Allocated memory was 98.6 MB in the beginning and 5.5 GB in the end (delta: 5.4 GB). Free memory was 62.9 MB in the beginning and 4.8 GB in the end (delta: -4.7 GB). Peak memory consumption was 626.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:32,097 INFO L168 Benchmark]: CDTParser took 0.63 ms. Allocated memory is still 98.6 MB. Free memory was 69.6 MB in the beginning and 69.5 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:16:32,097 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.70 ms. Allocated memory is still 98.6 MB. Free memory was 62.9 MB in the beginning and 73.3 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:32,098 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.74 ms. Allocated memory is still 98.6 MB. Free memory was 73.2 MB in the beginning and 71.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:32,098 INFO L168 Benchmark]: Boogie Preprocessor took 20.78 ms. Allocated memory is still 98.6 MB. Free memory was 71.7 MB in the beginning and 70.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:32,099 INFO L168 Benchmark]: RCFGBuilder took 277.11 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 61.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:32,099 INFO L168 Benchmark]: TraceAbstraction took 222478.91 ms. Allocated memory was 98.6 MB in the beginning and 5.5 GB in the end (delta: 5.4 GB). Free memory was 60.8 MB in the beginning and 4.8 GB in the end (delta: -4.7 GB). Peak memory consumption was 2.7 GB. Max. memory is 16.1 GB. [2021-10-28 09:16:32,100 INFO L168 Benchmark]: Witness Printer took 58.82 ms. Allocated memory is still 5.5 GB. Free memory was 4.8 GB in the beginning and 4.8 GB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:16:32,102 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 ms. Allocated memory is still 98.6 MB. Free memory was 69.6 MB in the beginning and 69.5 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 258.70 ms. Allocated memory is still 98.6 MB. Free memory was 62.9 MB in the beginning and 73.3 MB in the end (delta: -10.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.74 ms. Allocated memory is still 98.6 MB. Free memory was 73.2 MB in the beginning and 71.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.78 ms. Allocated memory is still 98.6 MB. Free memory was 71.7 MB in the beginning and 70.6 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 277.11 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 61.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 222478.91 ms. Allocated memory was 98.6 MB in the beginning and 5.5 GB in the end (delta: 5.4 GB). Free memory was 60.8 MB in the beginning and 4.8 GB in the end (delta: -4.7 GB). Peak memory consumption was 2.7 GB. Max. memory is 16.1 GB. * Witness Printer took 58.82 ms. Allocated memory is still 5.5 GB. Free memory was 4.8 GB in the beginning and 4.8 GB in the end (delta: 4.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: 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, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 222.2s, OverallIterations: 19, TraceHistogramMax: 100, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.0s, AutomataDifference: 3.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 192.9s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 561 SDtfs, 1217 SDslu, 2554 SDs, 0 SdLazy, 1243 SolverSat, 276 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1898 GetRequests, 1522 SyntacticMatches, 0 SemanticMatches, 376 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2233 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=239occurred in iteration=18, InterpolantAutomatonStates: 301, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 206 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 5123 NumberOfFragments, 1898 HoareAnnotationTreeSize, 4 FomulaSimplifications, 5909860 FormulaSimplificationTreeSizeReduction, 103.3s HoareSimplificationTime, 4 FomulaSimplificationsInter, 141739 FormulaSimplificationTreeSizeReductionInter, 89.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 15.3s InterpolantComputationTime, 3223 NumberOfCodeBlocks, 3172 NumberOfCodeBlocksAsserted, 304 NumberOfCheckSat, 3187 ConstructedInterpolants, 0 QuantifiedInterpolants, 15496 SizeOfPredicates, 34 NumberOfNonLiveVariables, 4267 ConjunctsInSsa, 233 ConjunctsInUnsatCore, 36 InterpolantComputations, 3 PerfectInterpolantSequences, 34349/88241 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 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 10 <= n - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: ((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((10 <= m && 10 <= n) && 20 <= k) && i <= 2) && j == 0) || ((((10 <= m && 10 <= n) && 65 <= k) && i <= 6) && j <= 5)) || ((((10 <= m && 10 <= n) && j <= 7) && 37 <= k) && i <= 3)) || ((((10 <= m && i <= 1) && 10 <= n) && j <= 3) && 13 <= k)) || ((((10 <= m && 10 <= n) && 68 <= k) && j <= 8) && i <= 6)) || (((10 <= m && 10 <= n) && 70 <= k) && i <= 6)) || ((((10 <= m && 79 <= k) && 10 <= n) && i <= 7) && j <= 9)) || ((((10 <= m && i <= 1) && 10 <= n) && 14 <= k) && j <= 4)) || (((10 <= m && 10 <= n) && 60 <= k) && i <= 5)) || ((((10 <= m && 10 <= n) && i + 1 <= n) && 94 <= k) && j <= 4)) || ((((10 <= m && 10 <= n) && 54 <= k) && i <= 5) && j <= 4)) || ((((10 <= m && 10 <= n) && i + 1 <= n) && 97 <= k) && j <= 7)) || ((((10 <= m && 10 <= n) && 60 <= k) && i <= 6) && j == 0)) || ((((10 <= m && 10 <= n) && i + 1 <= n) && j <= 5) && 95 <= k)) || ((((10 <= m && 10 <= n) && 83 <= k) && j <= 3) && i <= 8)) || ((((10 <= m && 10 <= n) && i <= 5) && j <= 2) && 52 <= k)) || ((((10 <= m && 53 <= k) && 10 <= n) && i <= 5) && j <= 3)) || (((10 <= m && 10 <= n) && 40 <= k) && i <= 3)) || ((((10 <= m && 10 <= n) && 3 <= k) && j <= 3) && i == 0)) || ((((10 <= m && 10 <= n) && 39 <= k) && i <= 3) && j <= 9)) || ((((10 <= m && 10 <= n) && 30 <= k) && i <= 3) && j == 0)) || ((((10 <= m && 10 <= n) && j <= 5) && 85 <= k) && i <= 8)) || (((10 <= m && 10 <= n) && i <= 4) && 50 <= k)) || ((((10 <= m && 10 <= n) && j <= 6) && i <= 8) && 86 <= k)) || ((((10 <= m && i <= 1) && 10 <= n) && j <= 5) && 15 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && i <= 4) && 41 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && 21 <= k) && i <= 2)) || ((((10 <= m && 10 <= n) && 25 <= k) && j <= 5) && i <= 2)) || ((((10 <= m && 10 <= n) && 82 <= k) && i <= 8) && j <= 2)) || ((((10 <= m && i <= 1) && 10 <= n) && 10 <= k) && j == 0)) || ((((10 <= m && 10 <= n) && i <= 4) && j <= 7) && 47 <= k)) || ((((10 <= m && 10 <= n) && i <= 4) && j <= 2) && 42 <= k)) || ((((29 <= k && 10 <= m) && 10 <= n) && i <= 2) && j <= 9)) || ((((10 <= m && 10 <= n) && 9 <= k) && i == 0) && j <= 9)) || ((((10 <= m && 10 <= n) && i <= 6) && 66 <= k) && j <= 6)) || ((((10 <= m && 10 <= n) && 48 <= k) && j <= 8) && i <= 4)) || ((((10 <= m && i <= 1) && 10 <= n) && 19 <= k) && j <= 9)) || ((((10 <= m && 10 <= n) && j <= 8) && 28 <= k) && i <= 2)) || ((((10 <= m && 10 <= n) && 7 <= k) && j <= 7) && i == 0)) || ((((10 <= m && 10 <= n) && 88 <= k) && j <= 8) && i <= 8)) || ((((10 <= m && 10 <= n) && j <= 3) && 33 <= k) && i <= 3)) || ((((10 <= m && j <= 1) && 10 <= n) && i <= 8) && 81 <= k)) || ((((10 <= m && 10 <= n) && i <= 6) && 64 <= k) && j <= 4)) || ((((10 <= m && 10 <= n) && i <= 8) && j == 0) && 80 <= k)) || (((10 <= m && i <= 1) && 10 <= n) && 20 <= k)) || ((((10 <= m && 10 <= n) && i <= 7) && j <= 3) && 73 <= k)) || ((((10 <= m && 0 <= k) && 10 <= n) && i == 0) && j == 0)) || ((((10 <= m && 10 <= n) && 55 <= k) && i <= 5) && j <= 5)) || ((((10 <= m && 10 <= n) && 5 <= k) && j <= 5) && i == 0)) || ((((10 <= m && 10 <= n) && i <= 4) && 44 <= k) && j <= 4)) || ((((10 <= m && i <= 1) && 10 <= n) && j <= 8) && 18 <= k)) || ((((10 <= m && 10 <= n) && 23 <= k) && j <= 3) && i <= 2)) || ((((10 <= m && 10 <= n) && 70 <= k) && i <= 7) && j == 0)) || ((((10 <= m && j <= 1) && 10 <= n) && 1 <= k) && i == 0)) || ((((10 <= m && 10 <= n) && j <= 8) && 38 <= k) && i <= 3)) || ((((10 <= m && 10 <= n) && 59 <= k) && i <= 5) && j <= 9)) || ((((10 <= m && 10 <= n) && j <= 6) && i <= 2) && 26 <= k)) || ((((10 <= m && 92 <= k) && 10 <= n) && i + 1 <= n) && j <= 2)) || ((((10 <= m && 10 <= n) && j <= 5) && i <= 3) && 35 <= k)) || (((10 <= m && 10 <= n) && 30 <= k) && i <= 2)) || ((((10 <= m && 10 <= n) && i + 1 <= n) && 96 <= k) && j <= 6)) || ((((87 <= k && 10 <= m) && 10 <= n) && j <= 7) && i <= 8)) || ((((10 <= m && 10 <= n) && 77 <= k) && i <= 7) && j <= 7)) || ((((10 <= m && j <= 1) && 10 <= n) && i <= 3) && 31 <= k)) || ((((10 <= m && 10 <= n) && 89 <= k) && i <= 8) && j <= 9)) || ((((10 <= m && 10 <= n) && i <= 7) && 72 <= k) && j <= 2)) || ((((10 <= m && 10 <= n) && 57 <= k) && i <= 5) && j <= 7)) || ((((10 <= m && 10 <= n) && i + 1 <= n) && 93 <= k) && j <= 3)) || ((((10 <= m && 10 <= n) && i <= 4) && 49 <= k) && j <= 9)) || ((((10 <= m && 10 <= n) && j <= 8) && i <= 7) && 78 <= k)) || ((((10 <= m && 10 <= n) && i <= 5) && 56 <= k) && j <= 6)) || ((((10 <= m && 10 <= n) && i + 1 <= n) && j <= 8) && 98 <= k)) || ((((10 <= m && 10 <= n) && i <= 4) && j <= 3) && 43 <= k)) || ((((10 <= m && 10 <= n) && j <= 8) && i <= 5) && 58 <= k)) || ((((10 <= m && 10 <= n) && i <= 6) && j <= 7) && 67 <= k)) || (((10 <= m && 10 <= n) && 90 <= k) && i <= 8)) || (((10 <= m && 10 <= n) && i <= 7) && 80 <= k)) || ((((10 <= m && 63 <= k) && 10 <= n) && i <= 6) && j <= 3)) || ((((10 <= m && 10 <= n) && j <= 7) && i <= 2) && 27 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && i + 1 <= n) && 91 <= k)) || (((10 <= m && 10 <= n) && i + 1 <= n) && 100 <= k)) || ((((10 <= m && 10 <= n) && 32 <= k) && i <= 3) && j <= 2)) || ((((10 <= m && 10 <= n) && 74 <= k) && i <= 7) && j <= 4)) || ((((10 <= m && 10 <= n) && 2 <= k) && i == 0) && j <= 2)) || ((((10 <= m && j <= 1) && 10 <= n) && 61 <= k) && i <= 6)) || ((((36 <= k && 10 <= m) && 10 <= n) && j <= 6) && i <= 3)) || ((((10 <= m && 10 <= n) && i <= 7) && j <= 6) && 76 <= k)) || ((((10 <= m && j <= 1) && 10 <= n) && i <= 7) && 71 <= k)) || ((((10 <= m && i <= 1) && 10 <= n) && j <= 7) && 17 <= k)) || ((((10 <= m && 10 <= n) && i <= 4) && j <= 5) && 45 <= k)) || ((((10 <= m && i <= 1) && 10 <= n) && j <= 6) && 16 <= k)) || ((((10 <= m && 10 <= n) && 22 <= k) && i <= 2) && j <= 2)) || (((10 <= m && 10 <= n) && i == 0) && 10 <= k)) || ((((10 <= m && 10 <= n) && 90 <= k) && i + 1 <= n) && j == 0)) || ((((10 <= m && 10 <= n) && 6 <= k) && i == 0) && j <= 6)) || ((((8 <= k && 10 <= m) && 10 <= n) && j <= 8) && i == 0)) || ((((10 <= m && 10 <= n) && i <= 4) && 40 <= k) && j == 0)) || ((((10 <= m && 10 <= n) && i <= 5) && 50 <= k) && j == 0)) || ((((10 <= m && j <= 1) && 10 <= n) && i <= 5) && 51 <= k)) || ((((10 <= m && 10 <= n) && i <= 7) && 75 <= k) && j <= 5)) || ((((10 <= m && 10 <= n) && i <= 6) && j <= 2) && 62 <= k)) || ((((10 <= m && i <= 1) && j <= 1) && 10 <= n) && 11 <= k)) || ((((10 <= m && 10 <= n) && i + 1 <= n) && 99 <= k) && j <= 9)) || ((((10 <= m && 10 <= n) && i <= 4) && j <= 6) && 46 <= k)) || ((((10 <= m && 10 <= n) && 84 <= k) && i <= 8) && j <= 4)) || ((((10 <= m && 10 <= n) && 24 <= k) && i <= 2) && j <= 4)) || ((((10 <= m && 4 <= k) && 10 <= n) && i == 0) && j <= 4)) || ((((10 <= m && 10 <= n) && 69 <= k) && i <= 6) && j <= 9)) || ((((10 <= m && i <= 1) && 10 <= n) && 12 <= k) && j <= 2)) || ((((10 <= m && 10 <= n) && i <= 3) && j <= 4) && 34 <= k) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: (((((((((((10 <= m && 10 <= n) && 100 <= k) || (((10 <= m && 10 <= n) && 60 <= k) && i <= 6)) || (((10 <= m && 10 <= n) && 20 <= k) && i <= 2)) || (((10 <= m && 10 <= n) && i <= 4) && 40 <= k)) || (((10 <= m && 0 <= k) && 10 <= n) && i == 0)) || (((10 <= m && 10 <= n) && 70 <= k) && i <= 7)) || (((10 <= m && i <= 1) && 10 <= n) && 10 <= k)) || (((10 <= m && 10 <= n) && i <= 5) && 50 <= k)) || (((10 <= m && 10 <= n) && i <= 8) && 80 <= k)) || (((10 <= m && 10 <= n) && 30 <= k) && i <= 3)) || (((10 <= m && 10 <= n) && 90 <= k) && i <= 9) RESULT: Ultimate proved your program to be correct! [2021-10-28 09:16:32,171 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c6d9ef4b-5bff-4836-8678-daa7055c3b85/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...