./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81652411-ad02-43a2-bb1f-8b89ec34b744/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81652411-ad02-43a2-bb1f-8b89ec34b744/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81652411-ad02-43a2-bb1f-8b89ec34b744/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81652411-ad02-43a2-bb1f-8b89ec34b744/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81652411-ad02-43a2-bb1f-8b89ec34b744/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81652411-ad02-43a2-bb1f-8b89ec34b744/bin/utaipan-WLngWcDbfI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 505914a72b8dea9b52e2cb3478aa86049fe70f2b .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 0.2.0-7b2dab5 [2021-10-11 02:27:50,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:27:50,056 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:27:50,095 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:27:50,096 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:27:50,097 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:27:50,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:27:50,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:27:50,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:27:50,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:27:50,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:27:50,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:27:50,108 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:27:50,109 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:27:50,111 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:27:50,112 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:27:50,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:27:50,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:27:50,117 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:27:50,119 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:27:50,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:27:50,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:27:50,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:27:50,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:27:50,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:27:50,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:27:50,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:27:50,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:27:50,131 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:27:50,132 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:27:50,132 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:27:50,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:27:50,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:27:50,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:27:50,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:27:50,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:27:50,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:27:50,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:27:50,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:27:50,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:27:50,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:27:50,142 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81652411-ad02-43a2-bb1f-8b89ec34b744/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:27:50,169 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:27:50,169 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:27:50,170 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:27:50,170 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:27:50,171 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:27:50,171 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:27:50,171 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:27:50,172 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:27:50,172 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:27:50,173 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:27:50,173 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:27:50,173 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:27:50,174 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:27:50,174 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:27:50,174 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:27:50,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:27:50,176 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:27:50,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:27:50,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:27:50,177 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:27:50,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:27:50,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:27:50,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:27:50,178 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:27:50,179 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:27:50,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:27:50,179 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:27:50,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:27:50,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:27:50,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:27:50,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:50,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:27:50,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:27:50,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:27:50,181 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:27:50,182 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:27:50,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:27:50,182 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:27:50,182 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:27:50,182 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_81652411-ad02-43a2-bb1f-8b89ec34b744/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81652411-ad02-43a2-bb1f-8b89ec34b744/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 505914a72b8dea9b52e2cb3478aa86049fe70f2b [2021-10-11 02:27:50,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:27:50,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:27:50,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:27:50,497 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:27:50,497 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:27:50,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81652411-ad02-43a2-bb1f-8b89ec34b744/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c [2021-10-11 02:27:50,576 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81652411-ad02-43a2-bb1f-8b89ec34b744/bin/utaipan-WLngWcDbfI/data/3f7546e1a/108dbabc02404c4f987e672b8bacf701/FLAGbbdf56397 [2021-10-11 02:27:51,024 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:27:51,025 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81652411-ad02-43a2-bb1f-8b89ec34b744/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c [2021-10-11 02:27:51,032 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81652411-ad02-43a2-bb1f-8b89ec34b744/bin/utaipan-WLngWcDbfI/data/3f7546e1a/108dbabc02404c4f987e672b8bacf701/FLAGbbdf56397 [2021-10-11 02:27:51,417 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81652411-ad02-43a2-bb1f-8b89ec34b744/bin/utaipan-WLngWcDbfI/data/3f7546e1a/108dbabc02404c4f987e672b8bacf701 [2021-10-11 02:27:51,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:27:51,421 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:27:51,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:51,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:27:51,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:27:51,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:51" (1/1) ... [2021-10-11 02:27:51,430 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58348237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:51, skipping insertion in model container [2021-10-11 02:27:51,430 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:27:51" (1/1) ... [2021-10-11 02:27:51,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:27:51,456 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:27:51,636 WARN L226 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_81652411-ad02-43a2-bb1f-8b89ec34b744/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c[538,551] [2021-10-11 02:27:51,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:51,664 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:27:51,675 WARN L226 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_81652411-ad02-43a2-bb1f-8b89ec34b744/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound2.c[538,551] [2021-10-11 02:27:51,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:27:51,697 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:27:51,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:51 WrapperNode [2021-10-11 02:27:51,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:27:51,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:51,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:27:51,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:27:51,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:51" (1/1) ... [2021-10-11 02:27:51,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:51" (1/1) ... [2021-10-11 02:27:51,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:27:51,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:27:51,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:27:51,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:27:51,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:51" (1/1) ... [2021-10-11 02:27:51,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:51" (1/1) ... [2021-10-11 02:27:51,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:51" (1/1) ... [2021-10-11 02:27:51,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:51" (1/1) ... [2021-10-11 02:27:51,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:51" (1/1) ... [2021-10-11 02:27:51,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:51" (1/1) ... [2021-10-11 02:27:51,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:51" (1/1) ... [2021-10-11 02:27:51,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:27:51,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:27:51,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:27:51,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:27:51,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:51" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81652411-ad02-43a2-bb1f-8b89ec34b744/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:27:51,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:27:51,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:27:51,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:27:51,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:27:52,327 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:27:52,327 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-11 02:27:52,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:52 BoogieIcfgContainer [2021-10-11 02:27:52,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:27:52,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:27:52,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:27:52,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:27:52,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:27:51" (1/3) ... [2021-10-11 02:27:52,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53767fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:52, skipping insertion in model container [2021-10-11 02:27:52,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:27:51" (2/3) ... [2021-10-11 02:27:52,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53767fcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:27:52, skipping insertion in model container [2021-10-11 02:27:52,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:52" (3/3) ... [2021-10-11 02:27:52,340 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_unwindbound2.c [2021-10-11 02:27:52,355 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:27:52,371 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-10-11 02:27:52,391 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-11 02:27:52,422 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:27:52,422 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:27:52,422 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:27:52,422 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:27:52,436 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:27:52,437 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:27:52,437 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:27:52,437 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:27:52,480 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2021-10-11 02:27:52,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:27:52,487 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:52,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:27:52,488 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:52,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:52,495 INFO L82 PathProgramCache]: Analyzing trace with hash 155587567, now seen corresponding path program 1 times [2021-10-11 02:27:52,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:52,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75117972] [2021-10-11 02:27:52,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:52,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:52,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:52,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75117972] [2021-10-11 02:27:52,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:52,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:52,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367740241] [2021-10-11 02:27:52,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:52,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:52,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:52,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:52,726 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2021-10-11 02:27:52,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:52,875 INFO L93 Difference]: Finished difference Result 92 states and 126 transitions. [2021-10-11 02:27:52,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:27:52,877 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2021-10-11 02:27:52,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:52,886 INFO L225 Difference]: With dead ends: 92 [2021-10-11 02:27:52,886 INFO L226 Difference]: Without dead ends: 54 [2021-10-11 02:27:52,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:52,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-11 02:27:52,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 31. [2021-10-11 02:27:52,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-10-11 02:27:52,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2021-10-11 02:27:52,937 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 5 [2021-10-11 02:27:52,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:52,937 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2021-10-11 02:27:52,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:52,938 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2021-10-11 02:27:52,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:27:52,938 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:52,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:52,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:27:52,942 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:52,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:52,943 INFO L82 PathProgramCache]: Analyzing trace with hash -804784526, now seen corresponding path program 1 times [2021-10-11 02:27:52,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:52,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357621950] [2021-10-11 02:27:52,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:52,976 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:27:52,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [846833268] [2021-10-11 02:27:52,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81652411-ad02-43a2-bb1f-8b89ec34b744/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:53,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:53,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:27:53,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:53,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:53,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:53,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:53,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357621950] [2021-10-11 02:27:53,146 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:27:53,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846833268] [2021-10-11 02:27:53,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:53,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-11 02:27:53,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075279727] [2021-10-11 02:27:53,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:27:53,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:53,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:27:53,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:27:53,150 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 6 states. [2021-10-11 02:27:53,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:53,190 INFO L93 Difference]: Finished difference Result 64 states and 71 transitions. [2021-10-11 02:27:53,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:27:53,190 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2021-10-11 02:27:53,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:53,192 INFO L225 Difference]: With dead ends: 64 [2021-10-11 02:27:53,192 INFO L226 Difference]: Without dead ends: 46 [2021-10-11 02:27:53,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:27:53,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-11 02:27:53,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2021-10-11 02:27:53,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2021-10-11 02:27:53,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2021-10-11 02:27:53,202 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 7 [2021-10-11 02:27:53,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:53,202 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2021-10-11 02:27:53,202 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:27:53,203 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2021-10-11 02:27:53,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:27:53,203 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:53,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:53,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:27:53,429 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:53,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:53,430 INFO L82 PathProgramCache]: Analyzing trace with hash -804047694, now seen corresponding path program 1 times [2021-10-11 02:27:53,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:53,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88269451] [2021-10-11 02:27:53,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:53,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:53,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88269451] [2021-10-11 02:27:53,560 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:53,560 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:27:53,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576194911] [2021-10-11 02:27:53,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:27:53,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:53,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:27:53,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:27:53,564 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 4 states. [2021-10-11 02:27:53,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:53,683 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2021-10-11 02:27:53,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:27:53,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2021-10-11 02:27:53,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:53,690 INFO L225 Difference]: With dead ends: 59 [2021-10-11 02:27:53,690 INFO L226 Difference]: Without dead ends: 57 [2021-10-11 02:27:53,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:53,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-10-11 02:27:53,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 39. [2021-10-11 02:27:53,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-10-11 02:27:53,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2021-10-11 02:27:53,701 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 7 [2021-10-11 02:27:53,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:53,701 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2021-10-11 02:27:53,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:27:53,701 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2021-10-11 02:27:53,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:27:53,702 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:53,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:53,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:27:53,702 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:53,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:53,703 INFO L82 PathProgramCache]: Analyzing trace with hash 404435477, now seen corresponding path program 1 times [2021-10-11 02:27:53,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:53,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481743691] [2021-10-11 02:27:53,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:53,738 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:27:53,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1177682497] [2021-10-11 02:27:53,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81652411-ad02-43a2-bb1f-8b89ec34b744/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:53,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-11 02:27:53,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:53,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:53,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:53,976 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2021-10-11 02:27:53,977 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:27:54,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:54,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481743691] [2021-10-11 02:27:54,005 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:27:54,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177682497] [2021-10-11 02:27:54,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:54,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-10-11 02:27:54,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251576171] [2021-10-11 02:27:54,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-10-11 02:27:54,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:54,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-11 02:27:54,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:27:54,012 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 10 states. [2021-10-11 02:27:56,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:56,404 INFO L93 Difference]: Finished difference Result 97 states and 109 transitions. [2021-10-11 02:27:56,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-11 02:27:56,404 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2021-10-11 02:27:56,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:56,405 INFO L225 Difference]: With dead ends: 97 [2021-10-11 02:27:56,406 INFO L226 Difference]: Without dead ends: 73 [2021-10-11 02:27:56,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2021-10-11 02:27:56,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-11 02:27:56,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 50. [2021-10-11 02:27:56,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-10-11 02:27:56,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2021-10-11 02:27:56,417 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 9 [2021-10-11 02:27:56,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:56,417 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2021-10-11 02:27:56,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-10-11 02:27:56,418 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2021-10-11 02:27:56,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-11 02:27:56,418 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:56,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:56,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:56,645 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:56,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:56,645 INFO L82 PathProgramCache]: Analyzing trace with hash 1567670847, now seen corresponding path program 1 times [2021-10-11 02:27:56,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:56,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529437343] [2021-10-11 02:27:56,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:56,658 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:27:56,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1126208285] [2021-10-11 02:27:56,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81652411-ad02-43a2-bb1f-8b89ec34b744/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:56,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-11 02:27:56,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:56,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:56,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:27:56,887 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2021-10-11 02:27:56,888 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2021-10-11 02:27:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:27:56,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529437343] [2021-10-11 02:27:56,916 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:27:56,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1126208285] [2021-10-11 02:27:56,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:56,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8 [2021-10-11 02:27:56,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136776515] [2021-10-11 02:27:56,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-10-11 02:27:56,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:27:56,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-11 02:27:56,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-11 02:27:56,922 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 9 states. [2021-10-11 02:27:57,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:57,094 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2021-10-11 02:27:57,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-11 02:27:57,095 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2021-10-11 02:27:57,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:57,102 INFO L225 Difference]: With dead ends: 65 [2021-10-11 02:27:57,102 INFO L226 Difference]: Without dead ends: 53 [2021-10-11 02:27:57,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2021-10-11 02:27:57,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-11 02:27:57,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2021-10-11 02:27:57,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-10-11 02:27:57,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2021-10-11 02:27:57,128 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 13 [2021-10-11 02:27:57,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:57,129 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2021-10-11 02:27:57,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-10-11 02:27:57,129 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2021-10-11 02:27:57,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-11 02:27:57,131 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:57,131 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:57,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:57,351 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:57,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:57,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1802737760, now seen corresponding path program 1 times [2021-10-11 02:27:57,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:27:57,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683415029] [2021-10-11 02:27:57,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:27:57,370 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:27:57,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [798520160] [2021-10-11 02:27:57,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81652411-ad02-43a2-bb1f-8b89ec34b744/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:27:57,441 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:27:57,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:27:57,457 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:27:57,501 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:27:57,501 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:27:57,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:27:57,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:57 BoogieIcfgContainer [2021-10-11 02:27:57,757 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:57,758 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:57,758 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:57,758 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:57,761 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:27:52" (3/4) ... [2021-10-11 02:27:57,763 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 02:27:57,831 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81652411-ad02-43a2-bb1f-8b89ec34b744/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:57,831 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:57,833 INFO L168 Benchmark]: Toolchain (without parser) took 6410.56 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 79.5 MB in the beginning and 55.6 MB in the end (delta: 23.9 MB). Peak memory consumption was 48.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:57,834 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 121.6 MB. Free memory was 96.3 MB in the beginning and 96.3 MB in the end (delta: 64.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:57,834 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.47 ms. Allocated memory is still 121.6 MB. Free memory was 79.3 MB in the beginning and 95.4 MB in the end (delta: -16.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:57,835 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.65 ms. Allocated memory is still 121.6 MB. Free memory was 95.0 MB in the beginning and 93.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:57,835 INFO L168 Benchmark]: Boogie Preprocessor took 56.67 ms. Allocated memory is still 121.6 MB. Free memory was 93.5 MB in the beginning and 92.5 MB in the end (delta: 965.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:57,836 INFO L168 Benchmark]: RCFGBuilder took 499.68 ms. Allocated memory is still 121.6 MB. Free memory was 92.2 MB in the beginning and 70.2 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:57,837 INFO L168 Benchmark]: TraceAbstraction took 5426.01 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 69.9 MB in the beginning and 58.7 MB in the end (delta: 11.2 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:57,838 INFO L168 Benchmark]: Witness Printer took 73.49 ms. Allocated memory is still 146.8 MB. Free memory was 58.7 MB in the beginning and 55.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:57,841 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 121.6 MB. Free memory was 96.3 MB in the beginning and 96.3 MB in the end (delta: 64.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 275.47 ms. Allocated memory is still 121.6 MB. Free memory was 79.3 MB in the beginning and 95.4 MB in the end (delta: -16.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.65 ms. Allocated memory is still 121.6 MB. Free memory was 95.0 MB in the beginning and 93.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.67 ms. Allocated memory is still 121.6 MB. Free memory was 93.5 MB in the beginning and 92.5 MB in the end (delta: 965.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 499.68 ms. Allocated memory is still 121.6 MB. Free memory was 92.2 MB in the beginning and 70.2 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5426.01 ms. Allocated memory was 121.6 MB in the beginning and 146.8 MB in the end (delta: 25.2 MB). Free memory was 69.9 MB in the beginning and 58.7 MB in the end (delta: 11.2 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * Witness Printer took 73.49 ms. Allocated memory is still 146.8 MB. Free memory was 58.7 MB in the beginning and 55.6 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: - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; [L24] unsigned int A, B; [L25] long long r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 VAL [counter=0] [L35] EXPR counter++ VAL [counter=1] [L35] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [counter=1] [L35] EXPR counter++ VAL [counter=2] [L35] COND TRUE counter++<2 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND TRUE !(r >= d) VAL [counter=2] [L45] EXPR counter++ VAL [counter=3] [L45] COND FALSE !(counter++<2) [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND TRUE !(cond) VAL [counter=3] [L17] reach_error() VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.2s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 132 SDtfs, 264 SDslu, 228 SDs, 0 SdLazy, 188 SolverSat, 131 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 75 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 4746 SizeOfPredicates, 16 NumberOfNonLiveVariables, 210 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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! Received shutdown request...