./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd906284-ff7b-4974-aefd-b0c8a92ae8d7/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd906284-ff7b-4974-aefd-b0c8a92ae8d7/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_cd906284-ff7b-4974-aefd-b0c8a92ae8d7/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd906284-ff7b-4974-aefd-b0c8a92ae8d7/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd906284-ff7b-4974-aefd-b0c8a92ae8d7/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_cd906284-ff7b-4974-aefd-b0c8a92ae8d7/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 15d1d7d49ed223522c6431664b8ff836ebc81296f5e11773e2197361bd8b13cf .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:58:07,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:58:07,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:58:08,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:58:08,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:58:08,049 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:58:08,051 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:58:08,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:58:08,060 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:58:08,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:58:08,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:58:08,071 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:58:08,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:58:08,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:58:08,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:58:08,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:58:08,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:58:08,092 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:58:08,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:58:08,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:58:08,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:58:08,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:58:08,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:58:08,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:58:08,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:58:08,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:58:08,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:58:08,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:58:08,132 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:58:08,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:58:08,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:58:08,136 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:58:08,139 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:58:08,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:58:08,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:58:08,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:58:08,143 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:58:08,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:58:08,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:58:08,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:58:08,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:58:08,148 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd906284-ff7b-4974-aefd-b0c8a92ae8d7/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 09:58:08,189 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:58:08,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:58:08,190 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:58:08,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:58:08,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:58:08,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:58:08,193 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:58:08,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:58:08,194 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:58:08,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:58:08,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:58:08,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:58:08,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 09:58:08,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:58:08,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 09:58:08,196 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:58:08,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 09:58:08,196 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:58:08,196 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 09:58:08,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:58:08,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:58:08,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:58:08,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:58:08,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:58:08,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:58:08,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 09:58:08,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:58:08,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:58:08,200 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 09:58:08,200 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 09:58:08,200 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 09:58:08,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:58:08,201 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_cd906284-ff7b-4974-aefd-b0c8a92ae8d7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd906284-ff7b-4974-aefd-b0c8a92ae8d7/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15d1d7d49ed223522c6431664b8ff836ebc81296f5e11773e2197361bd8b13cf [2021-10-28 09:58:08,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:58:08,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:58:08,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:58:08,527 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:58:08,528 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:58:08,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd906284-ff7b-4974-aefd-b0c8a92ae8d7/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2021-10-28 09:58:08,648 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd906284-ff7b-4974-aefd-b0c8a92ae8d7/bin/uautomizer-UnR33cPsHg/data/867c7fd7f/0d59036216e7429f8c8b7dde0c84ec85/FLAGaac3fc00e [2021-10-28 09:58:09,289 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:58:09,289 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd906284-ff7b-4974-aefd-b0c8a92ae8d7/sv-benchmarks/c/heap-manipulation/merge_sort-1.i [2021-10-28 09:58:09,323 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd906284-ff7b-4974-aefd-b0c8a92ae8d7/bin/uautomizer-UnR33cPsHg/data/867c7fd7f/0d59036216e7429f8c8b7dde0c84ec85/FLAGaac3fc00e [2021-10-28 09:58:09,580 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd906284-ff7b-4974-aefd-b0c8a92ae8d7/bin/uautomizer-UnR33cPsHg/data/867c7fd7f/0d59036216e7429f8c8b7dde0c84ec85 [2021-10-28 09:58:09,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:58:09,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 09:58:09,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:58:09,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:58:09,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:58:09,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:58:09" (1/1) ... [2021-10-28 09:58:09,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5363277f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:09, skipping insertion in model container [2021-10-28 09:58:09,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:58:09" (1/1) ... [2021-10-28 09:58:09,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:58:09,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:58:10,077 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_cd906284-ff7b-4974-aefd-b0c8a92ae8d7/sv-benchmarks/c/heap-manipulation/merge_sort-1.i[22632,22645] [2021-10-28 09:58:10,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:58:10,124 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:58:10,164 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_cd906284-ff7b-4974-aefd-b0c8a92ae8d7/sv-benchmarks/c/heap-manipulation/merge_sort-1.i[22632,22645] [2021-10-28 09:58:10,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:58:10,234 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:58:10,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:10 WrapperNode [2021-10-28 09:58:10,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:58:10,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 09:58:10,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 09:58:10,239 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 09:58:10,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:10" (1/1) ... [2021-10-28 09:58:10,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:10" (1/1) ... [2021-10-28 09:58:10,319 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 09:58:10,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:58:10,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:58:10,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:58:10,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:10" (1/1) ... [2021-10-28 09:58:10,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:10" (1/1) ... [2021-10-28 09:58:10,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:10" (1/1) ... [2021-10-28 09:58:10,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:10" (1/1) ... [2021-10-28 09:58:10,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:10" (1/1) ... [2021-10-28 09:58:10,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:10" (1/1) ... [2021-10-28 09:58:10,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:10" (1/1) ... [2021-10-28 09:58:10,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:58:10,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:58:10,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:58:10,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:58:10,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:10" (1/1) ... [2021-10-28 09:58:10,399 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:58:10,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd906284-ff7b-4974-aefd-b0c8a92ae8d7/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:58:10,442 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd906284-ff7b-4974-aefd-b0c8a92ae8d7/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:58:10,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd906284-ff7b-4974-aefd-b0c8a92ae8d7/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:58:10,496 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:58:10,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:58:10,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-10-28 09:58:10,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-10-28 09:58:10,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:58:10,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-10-28 09:58:10,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:58:10,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:58:10,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:58:10,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:58:11,386 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:58:11,387 INFO L299 CfgBuilder]: Removed 75 assume(true) statements. [2021-10-28 09:58:11,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:58:11 BoogieIcfgContainer [2021-10-28 09:58:11,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:58:11,394 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:58:11,395 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:58:11,400 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:58:11,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:58:09" (1/3) ... [2021-10-28 09:58:11,401 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48825fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:58:11, skipping insertion in model container [2021-10-28 09:58:11,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:10" (2/3) ... [2021-10-28 09:58:11,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48825fac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:58:11, skipping insertion in model container [2021-10-28 09:58:11,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:58:11" (3/3) ... [2021-10-28 09:58:11,405 INFO L111 eAbstractionObserver]: Analyzing ICFG merge_sort-1.i [2021-10-28 09:58:11,412 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:58:11,412 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2021-10-28 09:58:11,493 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:58:11,501 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 09:58:11,501 INFO L340 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2021-10-28 09:58:11,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 85 states have (on average 1.8705882352941177) internal successors, (159), 98 states have internal predecessors, (159), 0 states have call successors, (0), 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 09:58:11,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 09:58:11,529 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:11,530 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 09:58:11,531 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-28 09:58:11,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:11,539 INFO L85 PathProgramCache]: Analyzing trace with hash 890218827, now seen corresponding path program 1 times [2021-10-28 09:58:11,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:11,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151664253] [2021-10-28 09:58:11,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:11,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:11,716 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 09:58:11,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:11,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151664253] [2021-10-28 09:58:11,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151664253] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:11,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:11,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 09:58:11,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203102571] [2021-10-28 09:58:11,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 09:58:11,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:11,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 09:58:11,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:58:11,748 INFO L87 Difference]: Start difference. First operand has 99 states, 85 states have (on average 1.8705882352941177) internal successors, (159), 98 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 09:58:11,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:11,801 INFO L93 Difference]: Finished difference Result 196 states and 316 transitions. [2021-10-28 09:58:11,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 09:58:11,803 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2021-10-28 09:58:11,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:11,816 INFO L225 Difference]: With dead ends: 196 [2021-10-28 09:58:11,817 INFO L226 Difference]: Without dead ends: 92 [2021-10-28 09:58:11,822 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 09:58:11,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-28 09:58:11,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-28 09:58:11,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 79 states have (on average 1.2911392405063291) internal successors, (102), 91 states have internal predecessors, (102), 0 states have call successors, (0), 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 09:58:11,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2021-10-28 09:58:11,891 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 6 [2021-10-28 09:58:11,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:11,892 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2021-10-28 09:58:11,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 09:58:11,892 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2021-10-28 09:58:11,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 09:58:11,893 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:11,893 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:11,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:58:11,894 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-28 09:58:11,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:11,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1806865150, now seen corresponding path program 1 times [2021-10-28 09:58:11,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:11,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107033882] [2021-10-28 09:58:11,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:11,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:12,031 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 09:58:12,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:12,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107033882] [2021-10-28 09:58:12,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107033882] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:12,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:12,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:58:12,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134700988] [2021-10-28 09:58:12,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 09:58:12,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:12,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 09:58:12,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:58:12,042 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:12,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:12,095 INFO L93 Difference]: Finished difference Result 182 states and 202 transitions. [2021-10-28 09:58:12,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 09:58:12,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-28 09:58:12,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:12,099 INFO L225 Difference]: With dead ends: 182 [2021-10-28 09:58:12,100 INFO L226 Difference]: Without dead ends: 98 [2021-10-28 09:58:12,102 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 09:58:12,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-28 09:58:12,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 94. [2021-10-28 09:58:12,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 81 states have (on average 1.2839506172839505) internal successors, (104), 93 states have internal predecessors, (104), 0 states have call successors, (0), 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 09:58:12,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2021-10-28 09:58:12,122 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 7 [2021-10-28 09:58:12,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:12,122 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2021-10-28 09:58:12,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:12,123 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2021-10-28 09:58:12,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-28 09:58:12,124 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:12,125 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:12,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:58:12,156 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-28 09:58:12,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:12,156 INFO L85 PathProgramCache]: Analyzing trace with hash 663763925, now seen corresponding path program 1 times [2021-10-28 09:58:12,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:12,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800224690] [2021-10-28 09:58:12,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:12,157 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:12,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:12,306 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 09:58:12,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:12,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800224690] [2021-10-28 09:58:12,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800224690] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:12,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:12,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:58:12,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898582237] [2021-10-28 09:58:12,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:58:12,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:12,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:58:12,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:58:12,311 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:12,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:12,479 INFO L93 Difference]: Finished difference Result 251 states and 286 transitions. [2021-10-28 09:58:12,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:58:12,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-28 09:58:12,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:12,486 INFO L225 Difference]: With dead ends: 251 [2021-10-28 09:58:12,486 INFO L226 Difference]: Without dead ends: 245 [2021-10-28 09:58:12,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 09:58:12,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-10-28 09:58:12,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 96. [2021-10-28 09:58:12,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 84 states have (on average 1.2738095238095237) internal successors, (107), 95 states have internal predecessors, (107), 0 states have call successors, (0), 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 09:58:12,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2021-10-28 09:58:12,522 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 13 [2021-10-28 09:58:12,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:12,522 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2021-10-28 09:58:12,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:12,523 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2021-10-28 09:58:12,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 09:58:12,525 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:12,525 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:12,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:58:12,526 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-28 09:58:12,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:12,528 INFO L85 PathProgramCache]: Analyzing trace with hash 2036062252, now seen corresponding path program 1 times [2021-10-28 09:58:12,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:12,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063642841] [2021-10-28 09:58:12,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:12,529 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:12,691 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 09:58:12,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:12,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063642841] [2021-10-28 09:58:12,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063642841] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:12,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:12,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:58:12,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839263170] [2021-10-28 09:58:12,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:58:12,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:12,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:58:12,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:58:12,702 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:12,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:12,969 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2021-10-28 09:58:12,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:58:12,970 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-28 09:58:12,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:12,973 INFO L225 Difference]: With dead ends: 125 [2021-10-28 09:58:12,973 INFO L226 Difference]: Without dead ends: 123 [2021-10-28 09:58:12,976 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:58:12,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-10-28 09:58:12,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 94. [2021-10-28 09:58:12,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 83 states have (on average 1.2650602409638554) internal successors, (105), 93 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:12,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 105 transitions. [2021-10-28 09:58:12,992 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 105 transitions. Word has length 20 [2021-10-28 09:58:12,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:12,992 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 105 transitions. [2021-10-28 09:58:12,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:12,993 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 105 transitions. [2021-10-28 09:58:12,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 09:58:12,994 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:12,994 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:12,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:58:12,995 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-28 09:58:12,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:12,998 INFO L85 PathProgramCache]: Analyzing trace with hash 2014113239, now seen corresponding path program 1 times [2021-10-28 09:58:12,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:12,999 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935976034] [2021-10-28 09:58:13,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:13,000 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:13,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-28 09:58:13,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:13,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935976034] [2021-10-28 09:58:13,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935976034] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:13,161 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:13,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:58:13,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333508695] [2021-10-28 09:58:13,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:58:13,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:13,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:58:13,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:58:13,163 INFO L87 Difference]: Start difference. First operand 94 states and 105 transitions. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:13,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:13,337 INFO L93 Difference]: Finished difference Result 94 states and 105 transitions. [2021-10-28 09:58:13,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 09:58:13,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-28 09:58:13,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:13,340 INFO L225 Difference]: With dead ends: 94 [2021-10-28 09:58:13,340 INFO L226 Difference]: Without dead ends: 92 [2021-10-28 09:58:13,340 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:58:13,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-28 09:58:13,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-28 09:58:13,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 82 states have (on average 1.2560975609756098) internal successors, (103), 91 states have internal predecessors, (103), 0 states have call successors, (0), 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 09:58:13,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 103 transitions. [2021-10-28 09:58:13,352 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 103 transitions. Word has length 20 [2021-10-28 09:58:13,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:13,353 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 103 transitions. [2021-10-28 09:58:13,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:13,353 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 103 transitions. [2021-10-28 09:58:13,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:58:13,355 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:13,355 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:13,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:58:13,356 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-28 09:58:13,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:13,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1486605840, now seen corresponding path program 1 times [2021-10-28 09:58:13,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:13,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123001742] [2021-10-28 09:58:13,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:13,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:13,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:13,490 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 09:58:13,490 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:13,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123001742] [2021-10-28 09:58:13,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123001742] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:13,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:13,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:58:13,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467515703] [2021-10-28 09:58:13,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:58:13,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:13,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:58:13,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:58:13,494 INFO L87 Difference]: Start difference. First operand 92 states and 103 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:13,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:13,798 INFO L93 Difference]: Finished difference Result 210 states and 230 transitions. [2021-10-28 09:58:13,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:58:13,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-28 09:58:13,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:13,801 INFO L225 Difference]: With dead ends: 210 [2021-10-28 09:58:13,801 INFO L226 Difference]: Without dead ends: 208 [2021-10-28 09:58:13,802 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:58:13,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-28 09:58:13,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 98. [2021-10-28 09:58:13,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 88 states have (on average 1.2386363636363635) internal successors, (109), 97 states have internal predecessors, (109), 0 states have call successors, (0), 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 09:58:13,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2021-10-28 09:58:13,810 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 23 [2021-10-28 09:58:13,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:13,811 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2021-10-28 09:58:13,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:13,812 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2021-10-28 09:58:13,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-28 09:58:13,813 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:13,813 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:13,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:58:13,814 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-28 09:58:13,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:13,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1760261746, now seen corresponding path program 1 times [2021-10-28 09:58:13,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:13,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059844444] [2021-10-28 09:58:13,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:13,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:13,929 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 09:58:13,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:13,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059844444] [2021-10-28 09:58:13,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059844444] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:13,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:13,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:58:13,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650731301] [2021-10-28 09:58:13,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:58:13,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:13,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:58:13,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:58:13,932 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:14,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:14,209 INFO L93 Difference]: Finished difference Result 208 states and 228 transitions. [2021-10-28 09:58:14,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:58:14,210 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-28 09:58:14,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:14,212 INFO L225 Difference]: With dead ends: 208 [2021-10-28 09:58:14,212 INFO L226 Difference]: Without dead ends: 206 [2021-10-28 09:58:14,212 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:58:14,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-28 09:58:14,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 104. [2021-10-28 09:58:14,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 94 states have (on average 1.2234042553191489) internal successors, (115), 103 states have internal predecessors, (115), 0 states have call successors, (0), 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 09:58:14,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2021-10-28 09:58:14,221 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 23 [2021-10-28 09:58:14,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:14,222 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2021-10-28 09:58:14,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:58:14,222 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2021-10-28 09:58:14,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-28 09:58:14,223 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:14,224 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:14,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:58:14,224 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 10 more)] === [2021-10-28 09:58:14,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:14,225 INFO L85 PathProgramCache]: Analyzing trace with hash -2060804288, now seen corresponding path program 1 times [2021-10-28 09:58:14,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:14,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343134143] [2021-10-28 09:58:14,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:14,226 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:58:14,250 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 09:58:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 09:58:14,299 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 09:58:14,300 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 09:58:14,301 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:58:14,304 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:58:14,304 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:58:14,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:58:14,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:58:14,305 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:58:14,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:58:14,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:58:14,306 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:58:14,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:58:14,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:58:14,307 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:58:14,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 09:58:14,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:58:14,312 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:14,317 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:58:14,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:58:14 BoogieIcfgContainer [2021-10-28 09:58:14,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:58:14,362 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:58:14,362 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:58:14,363 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:58:14,363 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:58:11" (3/4) ... [2021-10-28 09:58:14,365 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 09:58:14,442 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd906284-ff7b-4974-aefd-b0c8a92ae8d7/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:58:14,442 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:58:14,444 INFO L168 Benchmark]: Toolchain (without parser) took 4858.21 ms. Allocated memory was 98.6 MB in the beginning and 142.6 MB in the end (delta: 44.0 MB). Free memory was 64.1 MB in the beginning and 84.6 MB in the end (delta: -20.5 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:14,444 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 98.6 MB. Free memory is still 51.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:58:14,445 INFO L168 Benchmark]: CACSL2BoogieTranslator took 642.68 ms. Allocated memory was 98.6 MB in the beginning and 142.6 MB in the end (delta: 44.0 MB). Free memory was 63.8 MB in the beginning and 108.9 MB in the end (delta: -45.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:14,453 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.65 ms. Allocated memory is still 142.6 MB. Free memory was 108.9 MB in the beginning and 105.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:14,454 INFO L168 Benchmark]: Boogie Preprocessor took 65.93 ms. Allocated memory is still 142.6 MB. Free memory was 105.9 MB in the beginning and 103.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:14,455 INFO L168 Benchmark]: RCFGBuilder took 1003.22 ms. Allocated memory is still 142.6 MB. Free memory was 103.3 MB in the beginning and 78.2 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:14,456 INFO L168 Benchmark]: TraceAbstraction took 2961.96 ms. Allocated memory is still 142.6 MB. Free memory was 77.4 MB in the beginning and 87.8 MB in the end (delta: -10.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:58:14,456 INFO L168 Benchmark]: Witness Printer took 80.07 ms. Allocated memory is still 142.6 MB. Free memory was 87.8 MB in the beginning and 84.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:58:14,463 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 98.6 MB. Free memory is still 51.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 642.68 ms. Allocated memory was 98.6 MB in the beginning and 142.6 MB in the end (delta: 44.0 MB). Free memory was 63.8 MB in the beginning and 108.9 MB in the end (delta: -45.1 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.65 ms. Allocated memory is still 142.6 MB. Free memory was 108.9 MB in the beginning and 105.9 MB in the end (delta: 3.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.93 ms. Allocated memory is still 142.6 MB. Free memory was 105.9 MB in the beginning and 103.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1003.22 ms. Allocated memory is still 142.6 MB. Free memory was 103.3 MB in the beginning and 78.2 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2961.96 ms. Allocated memory is still 142.6 MB. Free memory was 77.4 MB in the beginning and 87.8 MB in the end (delta: -10.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 80.07 ms. Allocated memory is still 142.6 MB. Free memory was 87.8 MB in the beginning and 84.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.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 - CounterExampleResult [Line: 565]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L638] struct list *data = ((void *)0); [L639] COND TRUE __VERIFIER_nondet_int() [L640] struct node *node = malloc(sizeof *node); [L641] COND FALSE !(!node) [L643] node->next = node [L644] node->value = __VERIFIER_nondet_int() [L645] struct list *item = malloc(sizeof *item); [L646] COND FALSE !(!item) [L648] item->slist = node [L649] item->next = data [L650] data = item [L639] COND FALSE !(__VERIFIER_nondet_int()) [L652] COND FALSE !(!data) [L615] COND FALSE !(!(shape)) [L616] shape->next [L616] COND FALSE !(shape->next) [L622] COND FALSE !(!(shape)) [L623] EXPR shape->next [L623] COND FALSE !(!(shape->next == ((void *)0))) [L624] EXPR shape->slist [L624] COND FALSE !(!(shape->slist)) [L625] EXPR shape->slist [L625] EXPR shape->slist->next [L625] COND TRUE !(shape->slist->next == ((void *)0)) [L565] reach_error() - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 565]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 99 locations, 13 error locations. Started 1 CEGAR loops. OverallTime: 2.8s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 606 SDtfs, 1417 SDslu, 975 SDs, 0 SdLazy, 496 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=7, InterpolantAutomatonStates: 36, 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, 394 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 512 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 10/10 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 RESULT: Ultimate proved your program to be incorrect! [2021-10-28 09:58:14,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cd906284-ff7b-4974-aefd-b0c8a92ae8d7/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...