./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN --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 64bit --witnessprinter.graph.data.programhash 2111802b85a7ed937e00a6a9ec728883118992ec6025943e5ac09099841fb713 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:32:37,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:32:37,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:32:37,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:32:37,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:32:37,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:32:37,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:32:37,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:32:37,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:32:37,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:32:37,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:32:37,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:32:37,174 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:32:37,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:32:37,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:32:37,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:32:37,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:32:37,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:32:37,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:32:37,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:32:37,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:32:37,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:32:37,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:32:37,213 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:32:37,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:32:37,216 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:32:37,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:32:37,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:32:37,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:32:37,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:32:37,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:32:37,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:32:37,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:32:37,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:32:37,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:32:37,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:32:37,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:32:37,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:32:37,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:32:37,241 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:32:37,242 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:32:37,243 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 10:32:37,263 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:32:37,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:32:37,263 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:32:37,263 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:32:37,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:32:37,264 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:32:37,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:32:37,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:32:37,265 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:32:37,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:32:37,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:32:37,266 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:32:37,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:32:37,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:32:37,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:32:37,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:32:37,267 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:32:37,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:32:37,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:32:37,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:32:37,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:32:37,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:32:37,268 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:32:37,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:32:37,269 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:32:37,269 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:32:37,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:32:37,269 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:32:37,270 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:32:37,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:32:37,270 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_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2111802b85a7ed937e00a6a9ec728883118992ec6025943e5ac09099841fb713 [2022-11-20 10:32:37,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:32:37,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:32:37,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:32:37,545 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:32:37,545 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:32:37,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop1-func-interl.c [2022-11-20 10:32:40,598 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:32:41,048 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:32:41,049 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop1-func-interl.c [2022-11-20 10:32:41,085 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/data/9f8064a12/f82c8fa79e7f4f629bf7abb9a0ed2dc0/FLAG7ceedd1ea [2022-11-20 10:32:41,101 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/data/9f8064a12/f82c8fa79e7f4f629bf7abb9a0ed2dc0 [2022-11-20 10:32:41,103 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:32:41,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:32:41,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:32:41,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:32:41,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:32:41,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:32:41" (1/1) ... [2022-11-20 10:32:41,112 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15d138ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:41, skipping insertion in model container [2022-11-20 10:32:41,112 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:32:41" (1/1) ... [2022-11-20 10:32:41,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:32:41,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:32:41,485 WARN L237 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_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop1-func-interl.c[1014,1027] [2022-11-20 10:32:41,584 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.BitabsTranslation.abstractShiftRight(BitabsTranslation.java:159) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.IntegerTranslation.constructBinaryBitwiseIntegerExpression(IntegerTranslation.java:190) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.expressiontranslation.ExpressionTranslation.constructBinaryBitwiseExpression(ExpressionTranslation.java:131) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CExpressionTranslator.handleBitshiftOperation(CExpressionTranslator.java:418) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:834) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:728) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2446) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:303) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1126) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:276) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:728) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1413) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.handleLoops(CHandler.java:3466) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1456) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:223) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1087) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:371) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1489) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3314) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:600) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-20 10:32:41,590 INFO L158 Benchmark]: Toolchain (without parser) took 484.80ms. Allocated memory is still 161.5MB. Free memory was 121.5MB in the beginning and 93.6MB in the end (delta: 27.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-20 10:32:41,591 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 102.8MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:32:41,592 INFO L158 Benchmark]: CACSL2BoogieTranslator took 482.52ms. Allocated memory is still 161.5MB. Free memory was 120.8MB in the beginning and 93.6MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-11-20 10:32:41,593 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 102.8MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 482.52ms. Allocated memory is still 161.5MB. Free memory was 120.8MB in the beginning and 93.6MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: NullPointerException: null: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizes.extractIntegerValue(TypeSizes.java:384) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN --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 64bit --witnessprinter.graph.data.programhash 2111802b85a7ed937e00a6a9ec728883118992ec6025943e5ac09099841fb713 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-6b4ec56 [2022-11-20 10:32:43,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:32:43,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:32:43,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:32:43,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:32:43,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:32:43,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:32:43,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:32:43,984 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:32:43,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:32:43,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:32:43,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:32:43,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:32:43,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:32:43,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:32:44,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:32:44,006 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:32:44,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:32:44,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:32:44,013 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:32:44,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:32:44,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:32:44,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:32:44,021 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:32:44,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:32:44,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:32:44,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:32:44,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:32:44,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:32:44,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:32:44,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:32:44,040 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:32:44,041 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:32:44,042 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:32:44,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:32:44,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:32:44,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:32:44,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:32:44,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:32:44,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:32:44,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:32:44,057 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-11-20 10:32:44,099 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:32:44,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:32:44,101 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:32:44,101 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:32:44,102 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:32:44,102 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:32:44,103 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:32:44,103 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:32:44,103 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:32:44,104 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:32:44,105 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:32:44,105 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:32:44,105 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:32:44,105 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:32:44,106 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:32:44,106 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 10:32:44,106 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 10:32:44,106 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:32:44,107 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:32:44,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:32:44,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:32:44,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:32:44,108 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:32:44,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:32:44,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:32:44,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:32:44,109 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:32:44,109 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 10:32:44,109 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 10:32:44,109 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:32:44,109 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:32:44,110 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:32:44,110 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 10:32:44,110 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2111802b85a7ed937e00a6a9ec728883118992ec6025943e5ac09099841fb713 [2022-11-20 10:32:44,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:32:44,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:32:44,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:32:44,516 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:32:44,516 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:32:44,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop1-func-interl.c [2022-11-20 10:32:47,551 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:32:48,025 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:32:48,026 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop1-func-interl.c [2022-11-20 10:32:48,054 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/data/70844f25a/d37c95db932c4bcc901276fbbeea3e28/FLAG24f2c5000 [2022-11-20 10:32:48,074 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/data/70844f25a/d37c95db932c4bcc901276fbbeea3e28 [2022-11-20 10:32:48,077 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:32:48,078 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:32:48,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:32:48,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:32:48,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:32:48,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:32:48" (1/1) ... [2022-11-20 10:32:48,085 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e4d2fd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:48, skipping insertion in model container [2022-11-20 10:32:48,086 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:32:48" (1/1) ... [2022-11-20 10:32:48,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:32:48,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:32:48,519 WARN L237 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_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop1-func-interl.c[1014,1027] [2022-11-20 10:32:49,208 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:32:49,215 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:32:49,227 WARN L237 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_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.5.prop1-func-interl.c[1014,1027] [2022-11-20 10:32:49,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:32:49,587 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:32:49,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:49 WrapperNode [2022-11-20 10:32:49,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:32:49,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:32:49,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:32:49,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:32:49,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:49" (1/1) ... [2022-11-20 10:32:49,764 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:49" (1/1) ... [2022-11-20 10:32:50,037 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 5811 [2022-11-20 10:32:50,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:32:50,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:32:50,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:32:50,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:32:50,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:49" (1/1) ... [2022-11-20 10:32:50,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:49" (1/1) ... [2022-11-20 10:32:50,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:49" (1/1) ... [2022-11-20 10:32:50,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:49" (1/1) ... [2022-11-20 10:32:50,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:49" (1/1) ... [2022-11-20 10:32:50,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:49" (1/1) ... [2022-11-20 10:32:50,315 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:49" (1/1) ... [2022-11-20 10:32:50,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:49" (1/1) ... [2022-11-20 10:32:50,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:32:50,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:32:50,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:32:50,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:32:50,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:49" (1/1) ... [2022-11-20 10:32:50,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:32:50,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:32:50,468 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:32:50,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:32:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:32:50,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:32:51,689 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:32:51,691 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:33:07,229 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:33:07,236 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:33:07,237 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-20 10:33:07,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:07 BoogieIcfgContainer [2022-11-20 10:33:07,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:33:07,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:33:07,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:33:07,245 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:33:07,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:32:48" (1/3) ... [2022-11-20 10:33:07,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a91673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:33:07, skipping insertion in model container [2022-11-20 10:33:07,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:32:49" (2/3) ... [2022-11-20 10:33:07,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a91673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:33:07, skipping insertion in model container [2022-11-20 10:33:07,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:07" (3/3) ... [2022-11-20 10:33:07,251 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cambridge.5.prop1-func-interl.c [2022-11-20 10:33:07,272 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:33:07,273 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:33:07,341 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:33:07,349 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7ab42846, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:33:07,349 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:33:07,354 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 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) [2022-11-20 10:33:07,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 10:33:07,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:07,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 10:33:07,365 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:33:07,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:07,372 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-20 10:33:07,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:33:07,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008708127] [2022-11-20 10:33:07,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:07,391 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:33:07,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:33:07,399 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:33:07,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 10:33:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:08,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:33:08,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:08,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:08,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:33:08,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:33:08,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008708127] [2022-11-20 10:33:08,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008708127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:33:08,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:33:08,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:33:08,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112705644] [2022-11-20 10:33:08,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:33:08,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:33:08,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:33:08,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:33:08,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:33:08,797 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 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) Second operand has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-20 10:33:11,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.51s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 10:33:11,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:11,489 INFO L93 Difference]: Finished difference Result 19 states and 27 transitions. [2022-11-20 10:33:11,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:33:11,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-11-20 10:33:11,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:11,500 INFO L225 Difference]: With dead ends: 19 [2022-11-20 10:33:11,500 INFO L226 Difference]: Without dead ends: 10 [2022-11-20 10:33:11,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:33:11,506 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:11,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2022-11-20 10:33:11,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2022-11-20 10:33:11,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2022-11-20 10:33:11,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:11,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-20 10:33:11,539 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-20 10:33:11,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:11,540 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-20 10:33:11,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-20 10:33:11,540 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-20 10:33:11,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 10:33:11,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:11,541 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-20 10:33:11,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:11,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:33:11,759 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:33:11,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:11,760 INFO L85 PathProgramCache]: Analyzing trace with hash 271073635, now seen corresponding path program 1 times [2022-11-20 10:33:11,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:33:11,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87387439] [2022-11-20 10:33:11,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:33:11,764 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:33:11,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:33:11,766 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:33:11,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 10:33:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:33:23,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 5156 conjuncts, 92 conjunts are in the unsatisfiable core [2022-11-20 10:33:23,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:33:24,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:24,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:33:25,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:33:25,474 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:33:25,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87387439] [2022-11-20 10:33:25,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [87387439] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:33:25,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:33:25,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-20 10:33:25,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343656096] [2022-11-20 10:33:25,476 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:33:25,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 10:33:25,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:33:25,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 10:33:25,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:33:25,478 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:28,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.46s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 10:33:28,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:33:28,284 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-11-20 10:33:28,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:33:28,285 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-20 10:33:28,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:33:28,285 INFO L225 Difference]: With dead ends: 15 [2022-11-20 10:33:28,286 INFO L226 Difference]: Without dead ends: 13 [2022-11-20 10:33:28,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-20 10:33:28,288 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 10:33:28,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 17 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 6 Unchecked, 2.6s Time] [2022-11-20 10:33:28,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-11-20 10:33:28,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2022-11-20 10:33:28,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:28,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-11-20 10:33:28,295 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2022-11-20 10:33:28,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:33:28,295 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-11-20 10:33:28,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:33:28,296 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-11-20 10:33:28,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-20 10:33:28,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:33:28,297 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2022-11-20 10:33:28,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:33:28,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:33:28,519 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:33:28,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:33:28,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1020920393, now seen corresponding path program 2 times [2022-11-20 10:33:28,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:33:28,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14715645] [2022-11-20 10:33:28,531 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 10:33:28,531 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:33:28,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:33:28,533 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:33:28,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 10:33:54,385 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 10:33:54,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:33:54,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 10099 conjuncts, 566 conjunts are in the unsatisfiable core [2022-11-20 10:33:54,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:34:29,680 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:34:29,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 10:35:34,682 WARN L233 SmtUtils]: Spent 13.39s on a formula simplification that was a NOOP. DAG size: 1460 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 10:35:37,680 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:35:37,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:35:37,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14715645] [2022-11-20 10:35:37,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14715645] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 10:35:37,681 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 10:35:37,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-20 10:35:37,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156152786] [2022-11-20 10:35:37,681 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 10:35:37,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-20 10:35:37,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:35:37,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-20 10:35:37,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=142, Unknown=4, NotChecked=0, Total=182 [2022-11-20 10:35:37,683 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 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) [2022-11-20 10:35:43,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.35s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 10:35:43,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:35:43,600 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-11-20 10:35:43,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 10:35:43,601 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-20 10:35:43,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:35:43,602 INFO L225 Difference]: With dead ends: 18 [2022-11-20 10:35:43,602 INFO L226 Difference]: Without dead ends: 16 [2022-11-20 10:35:43,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 76.3s TimeCoverageRelationStatistics Valid=49, Invalid=187, Unknown=4, NotChecked=0, Total=240 [2022-11-20 10:35:43,604 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-20 10:35:43,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 36 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 1 Unknown, 26 Unchecked, 2.5s Time] [2022-11-20 10:35:43,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-20 10:35:43,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2022-11-20 10:35:43,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 10:35:43,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-11-20 10:35:43,618 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2022-11-20 10:35:43,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:35:43,618 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-11-20 10:35:43,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 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) [2022-11-20 10:35:43,619 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-11-20 10:35:43,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 10:35:43,620 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:35:43,620 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1] [2022-11-20 10:35:43,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:35:43,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:35:43,823 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:35:43,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:35:43,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1580781475, now seen corresponding path program 3 times [2022-11-20 10:35:43,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:35:43,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360621943] [2022-11-20 10:35:43,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 10:35:43,838 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:35:43,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:35:43,839 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:35:43,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c4f33e27-dd10-4d39-a2d7-c14d045c3bbc/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 10:37:33,101 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-20 10:37:33,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 10:37:33,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 15042 conjuncts, 1244 conjunts are in the unsatisfiable core [2022-11-20 10:37:33,823 INFO L286 TraceCheckSpWp]: Computing forward predicates...