./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/nested6.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_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/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_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-invgen/nested6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/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_d463fc12-4147-4ea1-93c6-15afadcf4ed7/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 327b0d5e70f014fe291a4771fe2bbb17cb1148e77fe8f6a261d10a47df8adacc .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 09:32:00,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:32:00,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:32:00,939 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:32:00,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:32:00,946 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:32:00,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:32:00,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:32:00,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:32:00,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:32:00,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:32:00,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:32:00,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:32:00,969 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:32:00,971 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:32:00,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:32:00,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:32:00,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:32:00,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:32:00,995 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:32:00,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:32:00,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:32:01,002 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:32:01,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:32:01,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:32:01,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:32:01,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:32:01,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:32:01,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:32:01,013 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:32:01,013 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:32:01,014 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:32:01,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:32:01,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:32:01,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:32:01,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:32:01,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:32:01,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:32:01,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:32:01,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:32:01,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:32:01,026 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:32:01,073 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:32:01,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:32:01,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:32:01,075 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:32:01,076 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:32:01,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:32:01,083 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:32:01,083 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:32:01,084 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:32:01,084 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:32:01,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:32:01,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:32:01,086 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:32:01,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:32:01,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:32:01,086 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:32:01,087 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:32:01,087 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:32:01,087 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:32:01,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:32:01,088 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:32:01,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:32:01,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:32:01,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:32:01,089 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:32:01,089 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:32:01,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:32:01,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:32:01,090 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:32:01,091 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:32:01,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:32:01,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:32:01,092 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_d463fc12-4147-4ea1-93c6-15afadcf4ed7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 327b0d5e70f014fe291a4771fe2bbb17cb1148e77fe8f6a261d10a47df8adacc [2021-10-28 09:32:01,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:32:01,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:32:01,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:32:01,407 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:32:01,408 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:32:01,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/loop-invgen/nested6.i [2021-10-28 09:32:01,492 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/data/ac3a8512f/6727a9e300c04afda8a8be1f95e88759/FLAG1709fb98a [2021-10-28 09:32:02,058 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:32:02,060 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/sv-benchmarks/c/loop-invgen/nested6.i [2021-10-28 09:32:02,072 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/data/ac3a8512f/6727a9e300c04afda8a8be1f95e88759/FLAG1709fb98a [2021-10-28 09:32:02,395 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/data/ac3a8512f/6727a9e300c04afda8a8be1f95e88759 [2021-10-28 09:32:02,397 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:32:02,398 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:32:02,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:32:02,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:32:02,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:32:02,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:32:02" (1/1) ... [2021-10-28 09:32:02,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b0751f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:02, skipping insertion in model container [2021-10-28 09:32:02,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:32:02" (1/1) ... [2021-10-28 09:32:02,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:32:02,435 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:32:02,604 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_d463fc12-4147-4ea1-93c6-15afadcf4ed7/sv-benchmarks/c/loop-invgen/nested6.i[893,906] [2021-10-28 09:32:02,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:32:02,631 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:32:02,642 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_d463fc12-4147-4ea1-93c6-15afadcf4ed7/sv-benchmarks/c/loop-invgen/nested6.i[893,906] [2021-10-28 09:32:02,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:32:02,660 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:32:02,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:02 WrapperNode [2021-10-28 09:32:02,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:32:02,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:32:02,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:32:02,662 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:32:02,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:02" (1/1) ... [2021-10-28 09:32:02,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:02" (1/1) ... [2021-10-28 09:32:02,696 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:32:02,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:32:02,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:32:02,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:32:02,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:02" (1/1) ... [2021-10-28 09:32:02,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:02" (1/1) ... [2021-10-28 09:32:02,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:02" (1/1) ... [2021-10-28 09:32:02,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:02" (1/1) ... [2021-10-28 09:32:02,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:02" (1/1) ... [2021-10-28 09:32:02,728 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:02" (1/1) ... [2021-10-28 09:32:02,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:02" (1/1) ... [2021-10-28 09:32:02,732 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:32:02,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:32:02,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:32:02,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:32:02,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:02" (1/1) ... [2021-10-28 09:32:02,741 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:32:02,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:32:02,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:32:02,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:32:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:32:02,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:32:02,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:32:02,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:32:03,095 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:32:03,108 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-28 09:32:03,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:32:03 BoogieIcfgContainer [2021-10-28 09:32:03,110 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:32:03,112 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:32:03,112 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:32:03,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:32:03,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:32:02" (1/3) ... [2021-10-28 09:32:03,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aca28c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:32:03, skipping insertion in model container [2021-10-28 09:32:03,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:02" (2/3) ... [2021-10-28 09:32:03,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aca28c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:32:03, skipping insertion in model container [2021-10-28 09:32:03,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:32:03" (3/3) ... [2021-10-28 09:32:03,119 INFO L111 eAbstractionObserver]: Analyzing ICFG nested6.i [2021-10-28 09:32:03,124 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:32:03,125 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-28 09:32:03,182 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:32:03,188 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 09:32:03,188 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-28 09:32:03,229 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 25 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 09:32:03,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-28 09:32:03,235 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:03,236 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:03,236 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:32:03,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:03,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1094943316, now seen corresponding path program 1 times [2021-10-28 09:32:03,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:03,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496971624] [2021-10-28 09:32:03,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:03,259 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:03,578 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 09:32:03,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:03,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496971624] [2021-10-28 09:32:03,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496971624] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:03,580 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:03,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:32:03,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645893452] [2021-10-28 09:32:03,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:32:03,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:03,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:32:03,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:32:03,615 INFO L87 Difference]: Start difference. First operand has 26 states, 22 states have (on average 1.6818181818181819) internal successors, (37), 25 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) Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 09:32:03,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:03,721 INFO L93 Difference]: Finished difference Result 59 states and 84 transitions. [2021-10-28 09:32:03,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:32:03,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2021-10-28 09:32:03,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:03,732 INFO L225 Difference]: With dead ends: 59 [2021-10-28 09:32:03,732 INFO L226 Difference]: Without dead ends: 26 [2021-10-28 09:32:03,736 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:32:03,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-28 09:32:03,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 20. [2021-10-28 09:32:03,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:03,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-10-28 09:32:03,772 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 10 [2021-10-28 09:32:03,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:03,774 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-10-28 09:32:03,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 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 09:32:03,775 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-10-28 09:32:03,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 09:32:03,776 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:03,776 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:03,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:32:03,777 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:32:03,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:03,780 INFO L85 PathProgramCache]: Analyzing trace with hash 415731034, now seen corresponding path program 1 times [2021-10-28 09:32:03,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:03,781 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546912928] [2021-10-28 09:32:03,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:03,782 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:03,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:03,899 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 09:32:03,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:03,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546912928] [2021-10-28 09:32:03,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546912928] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:03,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:03,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:32:03,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457663892] [2021-10-28 09:32:03,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:32:03,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:03,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:32:03,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:32:03,907 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 09:32:04,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:04,081 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2021-10-28 09:32:04,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:32:04,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 09:32:04,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:04,086 INFO L225 Difference]: With dead ends: 38 [2021-10-28 09:32:04,086 INFO L226 Difference]: Without dead ends: 36 [2021-10-28 09:32:04,088 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:32:04,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-28 09:32:04,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 18. [2021-10-28 09:32:04,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:04,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-10-28 09:32:04,101 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 11 [2021-10-28 09:32:04,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:04,102 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-10-28 09:32:04,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 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 09:32:04,103 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-10-28 09:32:04,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 09:32:04,104 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:04,104 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:04,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:32:04,105 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:32:04,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:04,115 INFO L85 PathProgramCache]: Analyzing trace with hash 26617871, now seen corresponding path program 1 times [2021-10-28 09:32:04,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:04,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490043135] [2021-10-28 09:32:04,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:04,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:04,169 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 09:32:04,169 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:04,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490043135] [2021-10-28 09:32:04,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490043135] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:04,170 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:32:04,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-28 09:32:04,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487001369] [2021-10-28 09:32:04,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:32:04,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:04,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:32:04,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:32:04,172 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 09:32:04,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:04,258 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2021-10-28 09:32:04,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:32:04,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 12 [2021-10-28 09:32:04,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:04,261 INFO L225 Difference]: With dead ends: 38 [2021-10-28 09:32:04,261 INFO L226 Difference]: Without dead ends: 36 [2021-10-28 09:32:04,262 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:32:04,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-28 09:32:04,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 26. [2021-10-28 09:32:04,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:04,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2021-10-28 09:32:04,284 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 12 [2021-10-28 09:32:04,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:04,285 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2021-10-28 09:32:04,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 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 09:32:04,285 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2021-10-28 09:32:04,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-28 09:32:04,286 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:04,286 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:04,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:32:04,287 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:32:04,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:04,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1040435036, now seen corresponding path program 1 times [2021-10-28 09:32:04,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:04,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475774302] [2021-10-28 09:32:04,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:04,289 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:04,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:04,406 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:04,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:04,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475774302] [2021-10-28 09:32:04,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475774302] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:32:04,413 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886381930] [2021-10-28 09:32:04,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:04,413 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:04,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:32:04,421 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:32:04,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:32:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:04,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:32:04,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:32:04,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:04,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886381930] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:32:04,846 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:32:04,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2021-10-28 09:32:04,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710201135] [2021-10-28 09:32:04,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:32:04,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:04,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:32:04,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:32:04,850 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:04,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:04,954 INFO L93 Difference]: Finished difference Result 80 states and 99 transitions. [2021-10-28 09:32:04,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:32:04,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-28 09:32:04,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:04,957 INFO L225 Difference]: With dead ends: 80 [2021-10-28 09:32:04,957 INFO L226 Difference]: Without dead ends: 59 [2021-10-28 09:32:04,959 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:32:04,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-28 09:32:04,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 30. [2021-10-28 09:32:04,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:04,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-10-28 09:32:04,980 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 16 [2021-10-28 09:32:04,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:04,980 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-10-28 09:32:04,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:04,981 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2021-10-28 09:32:04,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-28 09:32:04,981 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:04,982 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:05,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:32:05,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:05,207 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:32:05,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:05,207 INFO L85 PathProgramCache]: Analyzing trace with hash -856675865, now seen corresponding path program 1 times [2021-10-28 09:32:05,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:05,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634987683] [2021-10-28 09:32:05,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:05,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:05,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:05,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:05,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634987683] [2021-10-28 09:32:05,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634987683] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:32:05,309 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670099726] [2021-10-28 09:32:05,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:05,309 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:05,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:32:05,310 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:32:05,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 09:32:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:05,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:32:05,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:32:05,478 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:32:05,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670099726] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:32:05,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:32:05,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2021-10-28 09:32:05,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952318494] [2021-10-28 09:32:05,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:32:05,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:05,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:32:05,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:32:05,481 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 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 09:32:06,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:06,005 INFO L93 Difference]: Finished difference Result 88 states and 113 transitions. [2021-10-28 09:32:06,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-28 09:32:06,005 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 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 19 [2021-10-28 09:32:06,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:06,006 INFO L225 Difference]: With dead ends: 88 [2021-10-28 09:32:06,006 INFO L226 Difference]: Without dead ends: 75 [2021-10-28 09:32:06,007 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=297, Invalid=1035, Unknown=0, NotChecked=0, Total=1332 [2021-10-28 09:32:06,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-10-28 09:32:06,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 49. [2021-10-28 09:32:06,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.25) internal successors, (60), 48 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 09:32:06,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2021-10-28 09:32:06,021 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 60 transitions. Word has length 19 [2021-10-28 09:32:06,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:06,024 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 60 transitions. [2021-10-28 09:32:06,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 12 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 09:32:06,024 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 60 transitions. [2021-10-28 09:32:06,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-28 09:32:06,027 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:06,027 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:06,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 09:32:06,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:06,252 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:32:06,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:06,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1284078331, now seen corresponding path program 1 times [2021-10-28 09:32:06,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:06,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935068483] [2021-10-28 09:32:06,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:06,254 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:06,325 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 09:32:06,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:06,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935068483] [2021-10-28 09:32:06,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935068483] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:32:06,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772525941] [2021-10-28 09:32:06,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:06,327 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:06,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:32:06,328 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:32:06,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-28 09:32:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:06,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-28 09:32:06,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:32:06,608 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-28 09:32:06,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772525941] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:32:06,609 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:32:06,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-10-28 09:32:06,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217453940] [2021-10-28 09:32:06,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:32:06,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:06,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:32:06,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:32:06,610 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:06,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:06,708 INFO L93 Difference]: Finished difference Result 111 states and 136 transitions. [2021-10-28 09:32:06,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:32:06,708 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-10-28 09:32:06,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:06,709 INFO L225 Difference]: With dead ends: 111 [2021-10-28 09:32:06,709 INFO L226 Difference]: Without dead ends: 78 [2021-10-28 09:32:06,710 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:32:06,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-28 09:32:06,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 62. [2021-10-28 09:32:06,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.2295081967213115) internal successors, (75), 61 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 09:32:06,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2021-10-28 09:32:06,723 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 28 [2021-10-28 09:32:06,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:06,724 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2021-10-28 09:32:06,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:06,724 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2021-10-28 09:32:06,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-28 09:32:06,725 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:32:06,725 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:32:06,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-28 09:32:06,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-28 09:32:06,942 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 09:32:06,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:32:06,943 INFO L85 PathProgramCache]: Analyzing trace with hash -777365176, now seen corresponding path program 2 times [2021-10-28 09:32:06,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:32:06,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045146711] [2021-10-28 09:32:06,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:32:06,944 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:32:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:32:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-10-28 09:32:07,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:32:07,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045146711] [2021-10-28 09:32:07,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045146711] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:32:07,036 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304026477] [2021-10-28 09:32:07,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 09:32:07,037 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:07,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:32:07,038 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:32:07,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-28 09:32:07,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 09:32:07,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 09:32:07,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-28 09:32:07,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:32:07,290 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 09:32:07,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304026477] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:32:07,290 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 09:32:07,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 11 [2021-10-28 09:32:07,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883666177] [2021-10-28 09:32:07,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:32:07,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:32:07,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:32:07,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:32:07,293 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:07,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:32:07,792 INFO L93 Difference]: Finished difference Result 155 states and 196 transitions. [2021-10-28 09:32:07,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-28 09:32:07,793 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-10-28 09:32:07,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:32:07,793 INFO L225 Difference]: With dead ends: 155 [2021-10-28 09:32:07,793 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 09:32:07,795 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=240, Invalid=816, Unknown=0, NotChecked=0, Total=1056 [2021-10-28 09:32:07,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 09:32:07,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 09:32:07,795 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 09:32:07,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 09:32:07,796 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2021-10-28 09:32:07,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:32:07,796 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:32:07,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:32:07,796 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:32:07,796 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 09:32:07,799 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:32:07,799 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:32:07,799 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:32:07,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-28 09:32:08,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:32:08,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 09:32:08,015 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:32:08,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:32:08,068 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:32:08,128 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:32:08,129 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:32:08,145 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:32:08,208 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:32:08,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 09:32:08,807 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-28 09:32:08,807 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-28 09:32:08,808 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-28 09:32:08,808 INFO L857 garLoopResultBuilder]: For program point L19-2(line 19) no Hoare annotation was computed. [2021-10-28 09:32:08,808 INFO L853 garLoopResultBuilder]: At program point L36-2(lines 36 38) the Hoare annotation is: (let ((.cse2 (* 2 ULTIMATE.start_main_~i~0))) (let ((.cse0 (<= .cse2 ULTIMATE.start_main_~k~0)) (.cse1 (+ ULTIMATE.start_main_~j~0 1))) (or (and .cse0 (<= .cse1 (+ ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~i~0)) (<= (div (* ULTIMATE.start_main_~j~0 (- 1)) (- 2)) 0) (= ULTIMATE.start_main_~i~0 0) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~j~0)) (and (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0) .cse0 (<= .cse1 ULTIMATE.start_main_~n~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= .cse2 ULTIMATE.start_main_~j~0))))) [2021-10-28 09:32:08,808 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 09:32:08,809 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 09:32:08,809 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 09:32:08,809 INFO L857 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2021-10-28 09:32:08,809 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-28 09:32:08,809 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 09:32:08,809 INFO L857 garLoopResultBuilder]: For program point L33-2(lines 33 45) no Hoare annotation was computed. [2021-10-28 09:32:08,810 INFO L853 garLoopResultBuilder]: At program point L33-3(lines 33 45) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0)) (.cse1 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0))) (or (and .cse0 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~j~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse1) (and .cse0 (= ULTIMATE.start_main_~i~0 0) .cse1))) [2021-10-28 09:32:08,810 INFO L857 garLoopResultBuilder]: For program point L29(lines 29 32) no Hoare annotation was computed. [2021-10-28 09:32:08,810 INFO L857 garLoopResultBuilder]: For program point L29-1(lines 29 32) no Hoare annotation was computed. [2021-10-28 09:32:08,810 INFO L860 garLoopResultBuilder]: At program point L46(lines 24 48) the Hoare annotation is: true [2021-10-28 09:32:08,810 INFO L853 garLoopResultBuilder]: At program point L34-2(lines 34 44) the Hoare annotation is: (let ((.cse3 (* 2 ULTIMATE.start_main_~i~0))) (let ((.cse0 (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0)) (.cse1 (<= .cse3 ULTIMATE.start_main_~j~0)) (.cse2 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0))) (or (and .cse0 (<= (+ ULTIMATE.start_main_~j~0 1) (+ ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~i~0)) (= ULTIMATE.start_main_~i~0 0) .cse1 .cse2 (<= ULTIMATE.start_main_~j~0 .cse3)) (and .cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse1 .cse2)))) [2021-10-28 09:32:08,811 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-28 09:32:08,811 INFO L857 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-10-28 09:32:08,811 INFO L853 garLoopResultBuilder]: At program point L18-2(lines 1 48) the Hoare annotation is: (let ((.cse0 (* 2 ULTIMATE.start_main_~i~0))) (and (<= .cse0 ULTIMATE.start_main_~k~0) (<= (+ ULTIMATE.start_main_~k~0 1) ULTIMATE.start_main_~n~0) (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= .cse0 ULTIMATE.start_main_~j~0))) [2021-10-28 09:32:08,811 INFO L857 garLoopResultBuilder]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2021-10-28 09:32:08,811 INFO L860 garLoopResultBuilder]: At program point L47(lines 24 48) the Hoare annotation is: true [2021-10-28 09:32:08,812 INFO L853 garLoopResultBuilder]: At program point L18-5(lines 17 22) the Hoare annotation is: (and (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0) (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= (* 2 ULTIMATE.start_main_~i~0) ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0)) [2021-10-28 09:32:08,812 INFO L857 garLoopResultBuilder]: For program point L18-6(lines 18 20) no Hoare annotation was computed. [2021-10-28 09:32:08,812 INFO L853 garLoopResultBuilder]: At program point L18-8(lines 1 48) the Hoare annotation is: (let ((.cse4 (* 2 ULTIMATE.start_main_~i~0))) (let ((.cse0 (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~n~0)) (.cse1 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) (.cse2 (<= .cse4 ULTIMATE.start_main_~j~0)) (.cse3 (<= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~k~0))) (or (and .cse0 (<= (+ ULTIMATE.start_main_~j~0 1) ULTIMATE.start_main_~n~0) .cse1 .cse2 .cse3) (and .cse0 (= ULTIMATE.start_main_~i~0 0) .cse1 .cse2 .cse3 (<= ULTIMATE.start_main_~j~0 .cse4))))) [2021-10-28 09:32:08,812 INFO L857 garLoopResultBuilder]: For program point L35(lines 35 43) no Hoare annotation was computed. [2021-10-28 09:32:08,815 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2021-10-28 09:32:08,817 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:32:08,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:32:08 BoogieIcfgContainer [2021-10-28 09:32:08,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:32:08,835 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:32:08,835 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:32:08,836 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:32:08,836 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:32:03" (3/4) ... [2021-10-28 09:32:08,839 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:32:08,848 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-28 09:32:08,848 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:32:08,848 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:32:08,848 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 09:32:08,902 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:32:08,902 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:32:08,904 INFO L168 Benchmark]: Toolchain (without parser) took 6504.40 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 62.2 MB in the beginning and 78.8 MB in the end (delta: -16.7 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. [2021-10-28 09:32:08,904 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory was 68.8 MB in the beginning and 68.7 MB in the end (delta: 25.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:32:08,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.83 ms. Allocated memory is still 96.5 MB. Free memory was 62.0 MB in the beginning and 71.5 MB in the end (delta: -9.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:32:08,905 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.11 ms. Allocated memory is still 96.5 MB. Free memory was 71.5 MB in the beginning and 70.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:32:08,905 INFO L168 Benchmark]: Boogie Preprocessor took 35.37 ms. Allocated memory is still 96.5 MB. Free memory was 70.0 MB in the beginning and 68.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:32:08,906 INFO L168 Benchmark]: RCFGBuilder took 377.69 ms. Allocated memory is still 96.5 MB. Free memory was 68.8 MB in the beginning and 59.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:32:08,906 INFO L168 Benchmark]: TraceAbstraction took 5722.97 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 58.7 MB in the beginning and 82.0 MB in the end (delta: -23.3 MB). Peak memory consumption was 49.8 MB. Max. memory is 16.1 GB. [2021-10-28 09:32:08,907 INFO L168 Benchmark]: Witness Printer took 66.81 ms. Allocated memory is still 117.4 MB. Free memory was 82.0 MB in the beginning and 78.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:32:08,909 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory was 68.8 MB in the beginning and 68.7 MB in the end (delta: 25.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 260.83 ms. Allocated memory is still 96.5 MB. Free memory was 62.0 MB in the beginning and 71.5 MB in the end (delta: -9.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.11 ms. Allocated memory is still 96.5 MB. Free memory was 71.5 MB in the beginning and 70.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.37 ms. Allocated memory is still 96.5 MB. Free memory was 70.0 MB in the beginning and 68.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 377.69 ms. Allocated memory is still 96.5 MB. Free memory was 68.8 MB in the beginning and 59.0 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5722.97 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 58.7 MB in the beginning and 82.0 MB in the end (delta: -23.3 MB). Peak memory consumption was 49.8 MB. Max. memory is 16.1 GB. * Witness Printer took 66.81 ms. Allocated memory is still 117.4 MB. Free memory was 82.0 MB in the beginning and 78.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 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 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - 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, 26 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 7, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 304 SDslu, 272 SDs, 0 SdLazy, 611 SolverSat, 178 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 196 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=6, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 105 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 93 NumberOfFragments, 213 HoareAnnotationTreeSize, 8 FomulaSimplifications, 46677 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 8 FomulaSimplificationsInter, 3898 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 227 NumberOfCodeBlocks, 227 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 216 ConstructedInterpolants, 0 QuantifiedInterpolants, 708 SizeOfPredicates, 12 NumberOfNonLiveVariables, 351 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 104/126 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 3 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((k <= n && j + 1 <= n) && !(0 == cond)) && 2 * i <= j) && n <= k - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: (((2 * i <= k && k + 1 <= n) && j + 1 <= n) && !(0 == cond)) && 2 * i <= j - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: (((k <= n && n <= j) && !(0 == cond)) && n <= k) || ((k <= n && i == 0) && n <= k) - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: ((((k <= n && j + 1 <= n) && !(0 == cond)) && 2 * i <= j) && n <= k) || (((((k <= n && i == 0) && !(0 == cond)) && 2 * i <= j) && n <= k) && j <= 2 * i) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((k <= n && j + 1 <= n + i) && i == 0) && 2 * i <= j) && n <= k) && j <= 2 * i) || (((k <= n && !(0 == cond)) && 2 * i <= j) && n <= k) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((2 * i <= k && j + 1 <= n + i) && j * -1 / -2 <= 0) && i == 0) && k <= j) || ((((k <= n && 2 * i <= k) && j + 1 <= n) && !(0 == cond)) && 2 * i <= j) RESULT: Ultimate proved your program to be correct! [2021-10-28 09:32:08,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d463fc12-4147-4ea1-93c6-15afadcf4ed7/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...