./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum20.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 66b03bf685aae9720ef4af0fb91907139a878375cd48373b4439b53b2302a22a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:09:10,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:09:10,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:09:10,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:09:10,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:09:10,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:09:10,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:09:10,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:09:10,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:09:10,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:09:10,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:09:10,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:09:10,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:09:10,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:09:10,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:09:10,691 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:09:10,692 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:09:10,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:09:10,695 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:09:10,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:09:10,698 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:09:10,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:09:10,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:09:10,701 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:09:10,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:09:10,704 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:09:10,704 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:09:10,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:09:10,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:09:10,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:09:10,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:09:10,708 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:09:10,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:09:10,709 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:09:10,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:09:10,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:09:10,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:09:10,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:09:10,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:09:10,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:09:10,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:09:10,713 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:09:10,737 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:09:10,737 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:09:10,738 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:09:10,738 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:09:10,739 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:09:10,739 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:09:10,739 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:09:10,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:09:10,740 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:09:10,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:09:10,740 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:09:10,740 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:09:10,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:09:10,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:09:10,741 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:09:10,741 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:09:10,741 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:09:10,741 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:09:10,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:09:10,742 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:09:10,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:09:10,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:09:10,742 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:09:10,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:09:10,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:09:10,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:09:10,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:09:10,743 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:09:10,743 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:09:10,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:09:10,744 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:09:10,744 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:09:10,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:09:10,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:09:10,744 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_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66b03bf685aae9720ef4af0fb91907139a878375cd48373b4439b53b2302a22a [2021-12-06 17:09:10,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:09:10,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:09:10,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:09:10,959 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:09:10,960 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:09:10,961 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/reducercommutativity/rangesum20.i [2021-12-06 17:09:11,005 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/data/f5e84f5e5/91cb7b1c691d4c34b62740888e2073f2/FLAGae360b17b [2021-12-06 17:09:11,416 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:09:11,416 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/sv-benchmarks/c/reducercommutativity/rangesum20.i [2021-12-06 17:09:11,421 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/data/f5e84f5e5/91cb7b1c691d4c34b62740888e2073f2/FLAGae360b17b [2021-12-06 17:09:11,431 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/data/f5e84f5e5/91cb7b1c691d4c34b62740888e2073f2 [2021-12-06 17:09:11,433 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:09:11,434 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:09:11,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:09:11,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:09:11,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:09:11,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:09:11" (1/1) ... [2021-12-06 17:09:11,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a4ca8d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:09:11, skipping insertion in model container [2021-12-06 17:09:11,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:09:11" (1/1) ... [2021-12-06 17:09:11,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:09:11,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:09:11,576 WARN L230 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_6da019ab-f787-4a28-8c7f-1cf62cd2744d/sv-benchmarks/c/reducercommutativity/rangesum20.i[1465,1478] [2021-12-06 17:09:11,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:09:11,586 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:09:11,605 WARN L230 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_6da019ab-f787-4a28-8c7f-1cf62cd2744d/sv-benchmarks/c/reducercommutativity/rangesum20.i[1465,1478] [2021-12-06 17:09:11,606 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:09:11,618 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:09:11,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:09:11 WrapperNode [2021-12-06 17:09:11,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:09:11,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:09:11,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:09:11,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:09:11,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:09:11" (1/1) ... [2021-12-06 17:09:11,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:09:11" (1/1) ... [2021-12-06 17:09:11,649 INFO L137 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2021-12-06 17:09:11,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:09:11,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:09:11,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:09:11,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:09:11,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:09:11" (1/1) ... [2021-12-06 17:09:11,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:09:11" (1/1) ... [2021-12-06 17:09:11,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:09:11" (1/1) ... [2021-12-06 17:09:11,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:09:11" (1/1) ... [2021-12-06 17:09:11,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:09:11" (1/1) ... [2021-12-06 17:09:11,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:09:11" (1/1) ... [2021-12-06 17:09:11,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:09:11" (1/1) ... [2021-12-06 17:09:11,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:09:11,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:09:11,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:09:11,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:09:11,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:09:11" (1/1) ... [2021-12-06 17:09:11,682 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:09:11,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:09:11,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:09:11,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:09:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:09:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:09:11,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 17:09:11,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 17:09:11,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:09:11,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:09:11,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 17:09:11,732 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2021-12-06 17:09:11,732 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2021-12-06 17:09:11,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 17:09:11,788 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:09:11,790 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:09:11,890 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:09:11,896 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:09:11,896 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-06 17:09:11,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:09:11 BoogieIcfgContainer [2021-12-06 17:09:11,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:09:11,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:09:11,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:09:11,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:09:11,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:09:11" (1/3) ... [2021-12-06 17:09:11,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135d0e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:09:11, skipping insertion in model container [2021-12-06 17:09:11,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:09:11" (2/3) ... [2021-12-06 17:09:11,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135d0e01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:09:11, skipping insertion in model container [2021-12-06 17:09:11,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:09:11" (3/3) ... [2021-12-06 17:09:11,905 INFO L111 eAbstractionObserver]: Analyzing ICFG rangesum20.i [2021-12-06 17:09:11,910 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:09:11,910 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:09:11,947 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:09:11,954 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 17:09:11,954 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:09:11,973 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:09:11,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-06 17:09:11,980 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:09:11,981 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:09:11,981 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:09:11,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:09:11,989 INFO L85 PathProgramCache]: Analyzing trace with hash -275565944, now seen corresponding path program 1 times [2021-12-06 17:09:11,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:09:11,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237137494] [2021-12-06 17:09:11,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:09:12,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:09:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:12,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 17:09:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:12,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 17:09:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:12,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 17:09:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:12,170 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 17:09:12,170 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:09:12,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237137494] [2021-12-06 17:09:12,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237137494] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:09:12,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:09:12,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:09:12,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595514262] [2021-12-06 17:09:12,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:09:12,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:09:12,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:09:12,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:09:12,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:09:12,201 INFO L87 Difference]: Start difference. First operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 17:09:12,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:09:12,228 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2021-12-06 17:09:12,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:09:12,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2021-12-06 17:09:12,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:09:12,238 INFO L225 Difference]: With dead ends: 54 [2021-12-06 17:09:12,238 INFO L226 Difference]: Without dead ends: 26 [2021-12-06 17:09:12,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:09:12,245 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:09:12,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 62 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:09:12,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-06 17:09:12,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-12-06 17:09:12,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:09:12,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2021-12-06 17:09:12,282 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 29 [2021-12-06 17:09:12,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:09:12,283 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-12-06 17:09:12,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-06 17:09:12,283 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2021-12-06 17:09:12,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-06 17:09:12,285 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:09:12,285 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:09:12,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:09:12,286 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:09:12,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:09:12,287 INFO L85 PathProgramCache]: Analyzing trace with hash -653100523, now seen corresponding path program 1 times [2021-12-06 17:09:12,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:09:12,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73708092] [2021-12-06 17:09:12,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:09:12,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:09:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:12,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:09:12,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:09:12,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73708092] [2021-12-06 17:09:12,360 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-06 17:09:12,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370963149] [2021-12-06 17:09:12,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:09:12,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:12,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:09:12,362 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:09:12,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 17:09:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:12,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 17:09:12,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:09:12,491 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 17:09:12,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:09:12,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370963149] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:09:12,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:09:12,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:09:12,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137175788] [2021-12-06 17:09:12,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:09:12,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:09:12,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:09:12,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:09:12,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:09:12,496 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:09:12,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:09:12,511 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2021-12-06 17:09:12,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:09:12,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2021-12-06 17:09:12,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:09:12,513 INFO L225 Difference]: With dead ends: 46 [2021-12-06 17:09:12,513 INFO L226 Difference]: Without dead ends: 28 [2021-12-06 17:09:12,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:09:12,515 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 2 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:09:12,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 51 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:09:12,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-06 17:09:12,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-12-06 17:09:12,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:09:12,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2021-12-06 17:09:12,522 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 31 [2021-12-06 17:09:12,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:09:12,523 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2021-12-06 17:09:12,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:09:12,523 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2021-12-06 17:09:12,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-06 17:09:12,525 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:09:12,525 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:09:12,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:09:12,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:12,727 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:09:12,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:09:12,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1081404920, now seen corresponding path program 1 times [2021-12-06 17:09:12,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:09:12,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078156393] [2021-12-06 17:09:12,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:09:12,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:09:12,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:12,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:09:12,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:09:12,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078156393] [2021-12-06 17:09:12,881 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-06 17:09:12,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743606322] [2021-12-06 17:09:12,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:09:12,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:12,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:09:12,883 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:09:12,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 17:09:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:12,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 17:09:12,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:09:12,987 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-06 17:09:12,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:09:12,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743606322] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:09:12,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:09:12,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:09:12,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802175610] [2021-12-06 17:09:12,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:09:12,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:09:12,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:09:12,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:09:12,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:09:12,990 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:09:13,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:09:13,001 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2021-12-06 17:09:13,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:09:13,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2021-12-06 17:09:13,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:09:13,003 INFO L225 Difference]: With dead ends: 44 [2021-12-06 17:09:13,003 INFO L226 Difference]: Without dead ends: 29 [2021-12-06 17:09:13,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:09:13,005 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:09:13,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 53 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:09:13,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-06 17:09:13,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2021-12-06 17:09:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:09:13,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-12-06 17:09:13,011 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 40 [2021-12-06 17:09:13,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:09:13,013 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-12-06 17:09:13,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:09:13,013 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-12-06 17:09:13,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 17:09:13,014 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:09:13,014 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:09:13,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 17:09:13,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:13,217 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:09:13,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:09:13,218 INFO L85 PathProgramCache]: Analyzing trace with hash -673301430, now seen corresponding path program 1 times [2021-12-06 17:09:13,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:09:13,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362696008] [2021-12-06 17:09:13,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:09:13,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:09:13,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:13,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:09:13,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:09:13,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362696008] [2021-12-06 17:09:13,347 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-06 17:09:13,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229664358] [2021-12-06 17:09:13,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:09:13,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:13,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:09:13,351 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:09:13,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 17:09:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:13,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:09:13,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:09:13,489 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 17:09:13,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 17:09:13,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229664358] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:09:13,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:09:13,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:09:13,490 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407851701] [2021-12-06 17:09:13,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:09:13,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:09:13,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:09:13,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:09:13,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:09:13,491 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:09:13,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:09:13,500 INFO L93 Difference]: Finished difference Result 55 states and 73 transitions. [2021-12-06 17:09:13,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:09:13,501 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2021-12-06 17:09:13,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:09:13,502 INFO L225 Difference]: With dead ends: 55 [2021-12-06 17:09:13,502 INFO L226 Difference]: Without dead ends: 34 [2021-12-06 17:09:13,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:09:13,504 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 2 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:09:13,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:09:13,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-06 17:09:13,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2021-12-06 17:09:13,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:09:13,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2021-12-06 17:09:13,509 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 42 [2021-12-06 17:09:13,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:09:13,510 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2021-12-06 17:09:13,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 17:09:13,510 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2021-12-06 17:09:13,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-06 17:09:13,511 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:09:13,511 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:09:13,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-06 17:09:13,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:13,713 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:09:13,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:09:13,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1042180377, now seen corresponding path program 1 times [2021-12-06 17:09:13,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:09:13,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073401091] [2021-12-06 17:09:13,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:09:13,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:09:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:13,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 17:09:13,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:13,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 17:09:13,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:13,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 17:09:13,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:13,936 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 17:09:13,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:09:13,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073401091] [2021-12-06 17:09:13,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073401091] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:09:13,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563947135] [2021-12-06 17:09:13,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:09:13,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:13,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:09:13,941 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:09:13,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 17:09:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:14,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:09:14,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:09:14,155 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 17:09:14,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:09:14,246 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 17:09:14,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563947135] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:09:14,246 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:09:14,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2021-12-06 17:09:14,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701385671] [2021-12-06 17:09:14,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:09:14,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:09:14,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:09:14,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:09:14,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:09:14,248 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 17:09:14,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:09:14,289 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2021-12-06 17:09:14,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:09:14,290 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 42 [2021-12-06 17:09:14,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:09:14,291 INFO L225 Difference]: With dead ends: 69 [2021-12-06 17:09:14,291 INFO L226 Difference]: Without dead ends: 42 [2021-12-06 17:09:14,292 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:09:14,293 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:09:14,293 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 138 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:09:14,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-06 17:09:14,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2021-12-06 17:09:14,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 36 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:09:14,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-12-06 17:09:14,300 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 42 [2021-12-06 17:09:14,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:09:14,300 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-12-06 17:09:14,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 9 states have internal predecessors, (41), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 17:09:14,301 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-12-06 17:09:14,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 17:09:14,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:09:14,302 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:09:14,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 17:09:14,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:14,504 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:09:14,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:09:14,505 INFO L85 PathProgramCache]: Analyzing trace with hash -604386836, now seen corresponding path program 2 times [2021-12-06 17:09:14,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:09:14,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683006578] [2021-12-06 17:09:14,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:09:14,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:09:14,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:14,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 17:09:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:14,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 17:09:14,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:14,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 17:09:14,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:14,669 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-12-06 17:09:14,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:09:14,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683006578] [2021-12-06 17:09:14,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683006578] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:09:14,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670990639] [2021-12-06 17:09:14,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:09:14,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:14,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:09:14,671 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:09:14,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 17:09:14,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:09:14,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:09:14,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 17:09:14,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:09:14,800 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-06 17:09:14,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:09:14,881 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-06 17:09:14,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670990639] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:09:14,881 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:09:14,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2021-12-06 17:09:14,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755273156] [2021-12-06 17:09:14,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:09:14,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 17:09:14,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:09:14,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 17:09:14,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:09:14,883 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 17:09:14,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:09:14,922 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2021-12-06 17:09:14,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 17:09:14,923 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) Word has length 57 [2021-12-06 17:09:14,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:09:14,924 INFO L225 Difference]: With dead ends: 86 [2021-12-06 17:09:14,924 INFO L226 Difference]: Without dead ends: 56 [2021-12-06 17:09:14,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-12-06 17:09:14,925 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:09:14,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 112 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:09:14,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-06 17:09:14,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2021-12-06 17:09:14,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 46 states have (on average 1.108695652173913) internal successors, (51), 46 states have internal predecessors, (51), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:09:14,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2021-12-06 17:09:14,931 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 57 [2021-12-06 17:09:14,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:09:14,931 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2021-12-06 17:09:14,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 1 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 17:09:14,931 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2021-12-06 17:09:14,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 17:09:14,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:09:14,932 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:09:14,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 17:09:15,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-06 17:09:15,134 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:09:15,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:09:15,135 INFO L85 PathProgramCache]: Analyzing trace with hash 948362870, now seen corresponding path program 1 times [2021-12-06 17:09:15,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:09:15,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896146884] [2021-12-06 17:09:15,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:09:15,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:09:15,206 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:09:15,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1577802839] [2021-12-06 17:09:15,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:09:15,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:15,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:09:15,210 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:09:15,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 17:09:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:15,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 17:09:15,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:09:15,439 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-06 17:09:15,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:09:15,582 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2021-12-06 17:09:15,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:09:15,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896146884] [2021-12-06 17:09:15,582 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:09:15,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577802839] [2021-12-06 17:09:15,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577802839] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:09:15,583 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:09:15,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2021-12-06 17:09:15,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855155626] [2021-12-06 17:09:15,583 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:09:15,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-06 17:09:15,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:09:15,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-06 17:09:15,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-12-06 17:09:15,585 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 17:09:15,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:09:15,642 INFO L93 Difference]: Finished difference Result 99 states and 120 transitions. [2021-12-06 17:09:15,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 17:09:15,642 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 78 [2021-12-06 17:09:15,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:09:15,643 INFO L225 Difference]: With dead ends: 99 [2021-12-06 17:09:15,644 INFO L226 Difference]: Without dead ends: 71 [2021-12-06 17:09:15,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-12-06 17:09:15,645 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 20 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 210 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:09:15,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 210 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:09:15,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-12-06 17:09:15,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-12-06 17:09:15,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 66 states have (on average 1.0757575757575757) internal successors, (71), 66 states have internal predecessors, (71), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:09:15,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2021-12-06 17:09:15,653 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 78 [2021-12-06 17:09:15,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:09:15,654 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2021-12-06 17:09:15,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 17:09:15,654 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2021-12-06 17:09:15,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 17:09:15,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:09:15,656 INFO L514 BasicCegarLoop]: trace histogram [20, 20, 9, 9, 6, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:09:15,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 17:09:15,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-06 17:09:15,858 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:09:15,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:09:15,859 INFO L85 PathProgramCache]: Analyzing trace with hash -102117622, now seen corresponding path program 2 times [2021-12-06 17:09:15,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:09:15,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144644021] [2021-12-06 17:09:15,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:09:15,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:09:15,922 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:09:15,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1486060894] [2021-12-06 17:09:15,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:09:15,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:15,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:09:15,923 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:09:15,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 17:09:15,986 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:09:15,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:09:15,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 17:09:15,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:09:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 61 proven. 7 refuted. 0 times theorem prover too weak. 483 trivial. 0 not checked. [2021-12-06 17:09:16,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:09:16,160 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 5 proven. 81 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2021-12-06 17:09:16,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:09:16,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144644021] [2021-12-06 17:09:16,161 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:09:16,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486060894] [2021-12-06 17:09:16,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486060894] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:09:16,161 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:09:16,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-06 17:09:16,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464044017] [2021-12-06 17:09:16,162 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:09:16,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 17:09:16,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:09:16,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 17:09:16,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:09:16,163 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:09:16,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:09:16,182 INFO L93 Difference]: Finished difference Result 109 states and 126 transitions. [2021-12-06 17:09:16,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 17:09:16,182 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 98 [2021-12-06 17:09:16,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:09:16,183 INFO L225 Difference]: With dead ends: 109 [2021-12-06 17:09:16,183 INFO L226 Difference]: Without dead ends: 83 [2021-12-06 17:09:16,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-06 17:09:16,184 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:09:16,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 99 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:09:16,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-12-06 17:09:16,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-12-06 17:09:16,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 78 states have (on average 1.064102564102564) internal successors, (83), 78 states have internal predecessors, (83), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:09:16,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2021-12-06 17:09:16,192 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 98 [2021-12-06 17:09:16,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:09:16,193 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2021-12-06 17:09:16,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:09:16,193 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2021-12-06 17:09:16,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 17:09:16,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:09:16,194 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 18, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:09:16,217 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 17:09:16,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:16,396 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:09:16,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:09:16,398 INFO L85 PathProgramCache]: Analyzing trace with hash 944957770, now seen corresponding path program 3 times [2021-12-06 17:09:16,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:09:16,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685347529] [2021-12-06 17:09:16,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:09:16,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:09:16,469 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:09:16,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [681782401] [2021-12-06 17:09:16,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 17:09:16,470 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:16,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:09:16,471 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:09:16,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 17:09:16,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-06 17:09:16,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:09:16,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 17:09:16,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:09:16,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1109 backedges. 332 proven. 1 refuted. 0 times theorem prover too weak. 776 trivial. 0 not checked. [2021-12-06 17:09:16,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:09:16,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1109 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1108 trivial. 0 not checked. [2021-12-06 17:09:16,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:09:16,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685347529] [2021-12-06 17:09:16,689 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:09:16,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681782401] [2021-12-06 17:09:16,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681782401] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:09:16,689 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:09:16,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-12-06 17:09:16,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400995236] [2021-12-06 17:09:16,689 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:09:16,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 17:09:16,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:09:16,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 17:09:16,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:09:16,690 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 17:09:16,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:09:16,704 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2021-12-06 17:09:16,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 17:09:16,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 134 [2021-12-06 17:09:16,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:09:16,706 INFO L225 Difference]: With dead ends: 121 [2021-12-06 17:09:16,706 INFO L226 Difference]: Without dead ends: 89 [2021-12-06 17:09:16,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-06 17:09:16,707 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 6 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:09:16,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 78 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:09:16,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-12-06 17:09:16,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-12-06 17:09:16,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 84 states have (on average 1.0595238095238095) internal successors, (89), 84 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:09:16,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 95 transitions. [2021-12-06 17:09:16,716 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 95 transitions. Word has length 134 [2021-12-06 17:09:16,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:09:16,716 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 95 transitions. [2021-12-06 17:09:16,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 17:09:16,717 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 95 transitions. [2021-12-06 17:09:16,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-06 17:09:16,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:09:16,719 INFO L514 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 18, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:09:16,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 17:09:16,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:16,920 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:09:16,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:09:16,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1134191088, now seen corresponding path program 4 times [2021-12-06 17:09:16,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:09:16,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666238566] [2021-12-06 17:09:16,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:09:16,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:09:16,987 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:09:16,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767852676] [2021-12-06 17:09:16,987 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 17:09:16,987 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:16,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:09:16,988 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:09:16,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-06 17:09:17,037 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 17:09:17,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:09:17,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 17:09:17,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:09:17,150 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 309 proven. 57 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2021-12-06 17:09:17,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:09:17,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1124 backedges. 13 proven. 387 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2021-12-06 17:09:17,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:09:17,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666238566] [2021-12-06 17:09:17,261 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:09:17,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1767852676] [2021-12-06 17:09:17,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1767852676] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:09:17,261 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:09:17,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-12-06 17:09:17,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989737048] [2021-12-06 17:09:17,262 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:09:17,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 17:09:17,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:09:17,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 17:09:17,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:09:17,263 INFO L87 Difference]: Start difference. First operand 89 states and 95 transitions. Second operand has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:09:17,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:09:17,286 INFO L93 Difference]: Finished difference Result 148 states and 166 transitions. [2021-12-06 17:09:17,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 17:09:17,287 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 140 [2021-12-06 17:09:17,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:09:17,287 INFO L225 Difference]: With dead ends: 148 [2021-12-06 17:09:17,287 INFO L226 Difference]: Without dead ends: 104 [2021-12-06 17:09:17,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 267 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-06 17:09:17,288 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:09:17,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 123 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:09:17,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-06 17:09:17,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-12-06 17:09:17,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 1.0505050505050506) internal successors, (104), 99 states have internal predecessors, (104), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:09:17,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 110 transitions. [2021-12-06 17:09:17,295 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 110 transitions. Word has length 140 [2021-12-06 17:09:17,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:09:17,295 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 110 transitions. [2021-12-06 17:09:17,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.076923076923077) internal successors, (66), 13 states have internal predecessors, (66), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:09:17,295 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 110 transitions. [2021-12-06 17:09:17,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-06 17:09:17,297 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:09:17,297 INFO L514 BasicCegarLoop]: trace histogram [36, 36, 33, 20, 20, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:09:17,317 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-06 17:09:17,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 17:09:17,499 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:09:17,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:09:17,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1554862939, now seen corresponding path program 5 times [2021-12-06 17:09:17,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:09:17,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187782174] [2021-12-06 17:09:17,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:09:17,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:09:17,560 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:09:17,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209806895] [2021-12-06 17:09:17,560 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 17:09:17,560 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:17,560 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:09:17,561 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:09:17,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-06 17:09:17,623 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-12-06 17:09:17,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:09:17,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 17:09:17,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:09:17,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2429 backedges. 1023 proven. 26 refuted. 0 times theorem prover too weak. 1380 trivial. 0 not checked. [2021-12-06 17:09:17,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:09:17,881 INFO L134 CoverageAnalysis]: Checked inductivity of 2429 backedges. 107 proven. 378 refuted. 0 times theorem prover too weak. 1944 trivial. 0 not checked. [2021-12-06 17:09:17,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:09:17,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187782174] [2021-12-06 17:09:17,881 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:09:17,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209806895] [2021-12-06 17:09:17,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209806895] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:09:17,881 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:09:17,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2021-12-06 17:09:17,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847774390] [2021-12-06 17:09:17,881 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:09:17,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 17:09:17,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:09:17,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 17:09:17,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:09:17,883 INFO L87 Difference]: Start difference. First operand 104 states and 110 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:09:17,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:09:17,913 INFO L93 Difference]: Finished difference Result 187 states and 216 transitions. [2021-12-06 17:09:17,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 17:09:17,914 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 185 [2021-12-06 17:09:17,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:09:17,915 INFO L225 Difference]: With dead ends: 187 [2021-12-06 17:09:17,915 INFO L226 Difference]: Without dead ends: 128 [2021-12-06 17:09:17,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 357 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:09:17,916 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 28 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:09:17,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 122 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:09:17,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-12-06 17:09:17,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-12-06 17:09:17,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 123 states have (on average 1.1056910569105691) internal successors, (136), 123 states have internal predecessors, (136), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:09:17,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 142 transitions. [2021-12-06 17:09:17,924 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 142 transitions. Word has length 185 [2021-12-06 17:09:17,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:09:17,924 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 142 transitions. [2021-12-06 17:09:17,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 12 states have internal predecessors, (60), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-06 17:09:17,924 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 142 transitions. [2021-12-06 17:09:17,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-12-06 17:09:17,926 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:09:17,926 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 33, 27, 20, 20, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:09:17,959 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2021-12-06 17:09:18,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:18,128 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:09:18,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:09:18,130 INFO L85 PathProgramCache]: Analyzing trace with hash -290085595, now seen corresponding path program 6 times [2021-12-06 17:09:18,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:09:18,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815138817] [2021-12-06 17:09:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:09:18,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:09:18,188 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:09:18,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [600250439] [2021-12-06 17:09:18,189 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 17:09:18,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:18,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:09:18,189 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:09:18,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-06 17:09:18,438 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-12-06 17:09:18,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:09:18,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 17:09:18,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:09:18,620 INFO L134 CoverageAnalysis]: Checked inductivity of 5921 backedges. 2490 proven. 16 refuted. 0 times theorem prover too weak. 3415 trivial. 0 not checked. [2021-12-06 17:09:18,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:09:18,773 INFO L134 CoverageAnalysis]: Checked inductivity of 5921 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 5905 trivial. 0 not checked. [2021-12-06 17:09:18,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:09:18,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815138817] [2021-12-06 17:09:18,773 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:09:18,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600250439] [2021-12-06 17:09:18,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600250439] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:09:18,774 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:09:18,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-12-06 17:09:18,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990668103] [2021-12-06 17:09:18,774 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:09:18,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 17:09:18,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:09:18,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 17:09:18,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:09:18,775 INFO L87 Difference]: Start difference. First operand 128 states and 142 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 17:09:18,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:09:18,801 INFO L93 Difference]: Finished difference Result 211 states and 241 transitions. [2021-12-06 17:09:18,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 17:09:18,801 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 257 [2021-12-06 17:09:18,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:09:18,803 INFO L225 Difference]: With dead ends: 211 [2021-12-06 17:09:18,803 INFO L226 Difference]: Without dead ends: 140 [2021-12-06 17:09:18,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:09:18,803 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 10 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:09:18,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 178 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:09:18,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-12-06 17:09:18,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-12-06 17:09:18,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 135 states have (on average 1.0962962962962963) internal successors, (148), 135 states have internal predecessors, (148), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:09:18,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 154 transitions. [2021-12-06 17:09:18,815 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 154 transitions. Word has length 257 [2021-12-06 17:09:18,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:09:18,815 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 154 transitions. [2021-12-06 17:09:18,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 17:09:18,816 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 154 transitions. [2021-12-06 17:09:18,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-12-06 17:09:18,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:09:18,820 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 33, 27, 20, 20, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:09:18,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-12-06 17:09:19,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-06 17:09:19,021 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:09:19,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:09:19,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1965956505, now seen corresponding path program 7 times [2021-12-06 17:09:19,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:09:19,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079782068] [2021-12-06 17:09:19,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:09:19,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:09:19,090 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:09:19,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1170909395] [2021-12-06 17:09:19,091 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 17:09:19,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:19,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:09:19,092 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:09:19,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-06 17:09:19,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:09:19,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 743 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 17:09:19,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:09:19,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6005 backedges. 2490 proven. 100 refuted. 0 times theorem prover too weak. 3415 trivial. 0 not checked. [2021-12-06 17:09:19,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:09:19,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6005 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 5905 trivial. 0 not checked. [2021-12-06 17:09:19,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:09:19,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079782068] [2021-12-06 17:09:19,624 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-06 17:09:19,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170909395] [2021-12-06 17:09:19,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170909395] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:09:19,624 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 17:09:19,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 21 [2021-12-06 17:09:19,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46983758] [2021-12-06 17:09:19,625 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 17:09:19,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 17:09:19,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:09:19,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 17:09:19,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-12-06 17:09:19,626 INFO L87 Difference]: Start difference. First operand 140 states and 154 transitions. Second operand has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 21 states have internal predecessors, (67), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 17:09:19,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:09:19,662 INFO L93 Difference]: Finished difference Result 229 states and 262 transitions. [2021-12-06 17:09:19,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 17:09:19,662 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 21 states have internal predecessors, (67), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 269 [2021-12-06 17:09:19,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:09:19,664 INFO L225 Difference]: With dead ends: 229 [2021-12-06 17:09:19,664 INFO L226 Difference]: Without dead ends: 158 [2021-12-06 17:09:19,664 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 516 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-12-06 17:09:19,664 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 19 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:09:19,665 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 103 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:09:19,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-12-06 17:09:19,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2021-12-06 17:09:19,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 153 states have (on average 1.0849673202614378) internal successors, (166), 153 states have internal predecessors, (166), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-06 17:09:19,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 172 transitions. [2021-12-06 17:09:19,672 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 172 transitions. Word has length 269 [2021-12-06 17:09:19,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:09:19,673 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 172 transitions. [2021-12-06 17:09:19,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 3.1904761904761907) internal successors, (67), 21 states have internal predecessors, (67), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-06 17:09:19,673 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 172 transitions. [2021-12-06 17:09:19,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2021-12-06 17:09:19,675 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:09:19,675 INFO L514 BasicCegarLoop]: trace histogram [60, 60, 33, 27, 20, 20, 19, 19, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:09:19,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-06 17:09:19,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 17:09:19,876 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:09:19,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:09:19,877 INFO L85 PathProgramCache]: Analyzing trace with hash 1541531655, now seen corresponding path program 8 times [2021-12-06 17:09:19,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:09:19,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535409814] [2021-12-06 17:09:19,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:09:19,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:09:19,949 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-06 17:09:19,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545559037] [2021-12-06 17:09:19,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:09:19,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:09:19,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:09:19,950 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:09:19,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-06 17:09:25,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:09:25,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-12-06 17:09:25,137 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 17:09:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 17:09:30,903 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 17:09:30,903 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 17:09:30,904 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 17:09:30,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-12-06 17:09:31,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 17:09:31,110 INFO L732 BasicCegarLoop]: Path program histogram: [8, 2, 1, 1, 1, 1] [2021-12-06 17:09:31,115 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 17:09:31,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:09:31 BoogieIcfgContainer [2021-12-06 17:09:31,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 17:09:31,223 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 17:09:31,223 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 17:09:31,223 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 17:09:31,223 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:09:11" (3/4) ... [2021-12-06 17:09:31,224 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-06 17:09:31,307 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-06 17:09:31,307 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 17:09:31,308 INFO L158 Benchmark]: Toolchain (without parser) took 19873.37ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 60.5MB in the beginning and 49.0MB in the end (delta: 11.5MB). Peak memory consumption was 32.2MB. Max. memory is 16.1GB. [2021-12-06 17:09:31,308 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 100.7MB. Free memory is still 77.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 17:09:31,308 INFO L158 Benchmark]: CACSL2BoogieTranslator took 183.44ms. Allocated memory is still 100.7MB. Free memory was 60.3MB in the beginning and 75.2MB in the end (delta: -15.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 17:09:31,308 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.34ms. Allocated memory is still 100.7MB. Free memory was 75.1MB in the beginning and 73.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:09:31,309 INFO L158 Benchmark]: Boogie Preprocessor took 23.14ms. Allocated memory is still 100.7MB. Free memory was 73.3MB in the beginning and 72.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-06 17:09:31,309 INFO L158 Benchmark]: RCFGBuilder took 223.85ms. Allocated memory is still 100.7MB. Free memory was 72.2MB in the beginning and 61.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-06 17:09:31,309 INFO L158 Benchmark]: TraceAbstraction took 19323.05ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 60.9MB in the beginning and 64.7MB in the end (delta: -3.8MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2021-12-06 17:09:31,310 INFO L158 Benchmark]: Witness Printer took 84.44ms. Allocated memory is still 121.6MB. Free memory was 64.7MB in the beginning and 49.0MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-06 17:09:31,312 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 100.7MB. Free memory is still 77.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 183.44ms. Allocated memory is still 100.7MB. Free memory was 60.3MB in the beginning and 75.2MB in the end (delta: -15.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.34ms. Allocated memory is still 100.7MB. Free memory was 75.1MB in the beginning and 73.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.14ms. Allocated memory is still 100.7MB. Free memory was 73.3MB in the beginning and 72.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 223.85ms. Allocated memory is still 100.7MB. Free memory was 72.2MB in the beginning and 61.3MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 19323.05ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 60.9MB in the beginning and 64.7MB in the end (delta: -3.8MB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. * Witness Printer took 84.44ms. Allocated memory is still 121.6MB. Free memory was 64.7MB in the beginning and 49.0MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 61]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L42] int x[20]; [L43] CALL init_nondet(x) [L16] int i; [L17] i = 0 VAL [i=0, x={4:0}, x={4:0}] [L17] COND TRUE i < 20 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=1, x={4:0}, x={4:0}] [L17] COND TRUE i < 20 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=2, x={4:0}, x={4:0}] [L17] COND TRUE i < 20 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=3, x={4:0}, x={4:0}] [L17] COND TRUE i < 20 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=4, x={4:0}, x={4:0}] [L17] COND TRUE i < 20 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=5, x={4:0}, x={4:0}] [L17] COND TRUE i < 20 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=6, x={4:0}, x={4:0}] [L17] COND TRUE i < 20 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=7, x={4:0}, x={4:0}] [L17] COND TRUE i < 20 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=8, x={4:0}, x={4:0}] [L17] COND TRUE i < 20 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=9, x={4:0}, x={4:0}] [L17] COND TRUE i < 20 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=10, x={4:0}, x={4:0}] [L17] COND TRUE i < 20 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=11, x={4:0}, x={4:0}] [L17] COND TRUE i < 20 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=12, x={4:0}, x={4:0}] [L17] COND TRUE i < 20 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=13, x={4:0}, x={4:0}] [L17] COND TRUE i < 20 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=14, x={4:0}, x={4:0}] [L17] COND TRUE i < 20 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=15, x={4:0}, x={4:0}] [L17] COND TRUE i < 20 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=16, x={4:0}, x={4:0}] [L17] COND TRUE i < 20 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=17, x={4:0}, x={4:0}] [L17] COND TRUE i < 20 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=18, x={4:0}, x={4:0}] [L17] COND TRUE i < 20 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=19, x={4:0}, x={4:0}] [L17] COND TRUE i < 20 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=20, x={4:0}, x={4:0}] [L17] COND FALSE !(i < 20) VAL [i=20, x={4:0}, x={4:0}] [L43] RET init_nondet(x) [L44] int temp; [L45] int ret; [L46] int ret2; [L47] int ret5; VAL [x={4:0}] [L49] CALL, EXPR rangesum(x) VAL [x={4:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [cnt=0, i=0, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=0, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=0, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=1, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=1, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=1, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=2, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=2, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=2, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=3, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=3, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=3, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=4, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=4, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=4, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=5, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=5, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=5, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=6, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=6, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=6, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=7, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=7, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=7, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=8, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=8, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=8, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=9, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=9, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=9, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=10, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=10, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=10, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=11, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=11, ret=0, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=1, i=11, ret=4, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=1, i=12, ret=4, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=1, i=12, ret=4, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=2, i=12, ret=-3, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=2, i=13, ret=-3, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=2, i=13, ret=-3, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=3, i=13, ret=-11, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=3, i=14, ret=-11, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=3, i=14, ret=-11, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=4, i=14, ret=-14, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=4, i=15, ret=-14, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=4, i=15, ret=-14, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=5, i=15, ret=-18, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=5, i=16, ret=-18, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=5, i=16, ret=-18, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=6, i=16, ret=-15, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=6, i=17, ret=-15, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=6, i=17, ret=-15, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=7, i=17, ret=-13, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=7, i=18, ret=-13, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=7, i=18, ret=-13, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=8, i=18, ret=-2, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=8, i=19, ret=-2, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=8, i=19, ret=-2, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=9, i=19, ret=-8, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=9, i=20, ret=-8, x={4:0}, x={4:0}] [L28] COND FALSE !(i < 20) VAL [cnt=9, i=20, ret=-8, x={4:0}, x={4:0}] [L34] COND TRUE cnt !=0 [L35] return ret / cnt; VAL [\result=0, cnt=9, i=20, ret=-8, x={4:0}, x={4:0}] [L49] RET, EXPR rangesum(x) VAL [rangesum(x)=0, x={4:0}] [L49] ret = rangesum(x) [L51] EXPR x[0] [L51] temp=x[0] [L51] EXPR x[1] [L51] x[0] = x[1] [L51] x[1] = temp VAL [ret=0, temp=-4, x={4:0}] [L52] CALL, EXPR rangesum(x) VAL [x={4:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [cnt=0, i=0, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=0, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=0, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=1, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=1, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=1, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=2, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=2, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=2, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=3, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=3, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=3, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=4, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=4, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=4, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=5, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=5, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=5, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=6, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=6, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=6, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=7, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=7, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=7, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=8, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=8, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=8, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=9, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=9, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=9, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=10, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=10, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=10, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=11, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=11, ret=0, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=1, i=11, ret=4, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=1, i=12, ret=4, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=1, i=12, ret=4, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=2, i=12, ret=-3, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=2, i=13, ret=-3, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=2, i=13, ret=-3, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=3, i=13, ret=-11, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=3, i=14, ret=-11, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=3, i=14, ret=-11, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=4, i=14, ret=-14, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=4, i=15, ret=-14, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=4, i=15, ret=-14, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=5, i=15, ret=-18, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=5, i=16, ret=-18, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=5, i=16, ret=-18, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=6, i=16, ret=-15, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=6, i=17, ret=-15, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=6, i=17, ret=-15, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=7, i=17, ret=-13, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=7, i=18, ret=-13, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=7, i=18, ret=-13, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=8, i=18, ret=-2, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=8, i=19, ret=-2, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=8, i=19, ret=-2, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=9, i=19, ret=-8, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=9, i=20, ret=-8, x={4:0}, x={4:0}] [L28] COND FALSE !(i < 20) VAL [cnt=9, i=20, ret=-8, x={4:0}, x={4:0}] [L34] COND TRUE cnt !=0 [L35] return ret / cnt; VAL [\result=0, cnt=9, i=20, ret=-8, x={4:0}, x={4:0}] [L52] RET, EXPR rangesum(x) VAL [rangesum(x)=0, ret=0, temp=-4, x={4:0}] [L52] ret2 = rangesum(x) [L53] EXPR x[0] [L53] temp=x[0] [L54] int i =0 ; VAL [i=0, ret=0, ret2=0, temp=-5, x={4:0}] [L54] COND TRUE i<20 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=1, ret=0, ret2=0, temp=-5, x={4:0}] [L54] COND TRUE i<20 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=2, ret=0, ret2=0, temp=-5, x={4:0}] [L54] COND TRUE i<20 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=3, ret=0, ret2=0, temp=-5, x={4:0}] [L54] COND TRUE i<20 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=4, ret=0, ret2=0, temp=-5, x={4:0}] [L54] COND TRUE i<20 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=5, ret=0, ret2=0, temp=-5, x={4:0}] [L54] COND TRUE i<20 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=6, ret=0, ret2=0, temp=-5, x={4:0}] [L54] COND TRUE i<20 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=7, ret=0, ret2=0, temp=-5, x={4:0}] [L54] COND TRUE i<20 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=8, ret=0, ret2=0, temp=-5, x={4:0}] [L54] COND TRUE i<20 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=9, ret=0, ret2=0, temp=-5, x={4:0}] [L54] COND TRUE i<20 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=10, ret=0, ret2=0, temp=-5, x={4:0}] [L54] COND TRUE i<20 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=11, ret=0, ret2=0, temp=-5, x={4:0}] [L54] COND TRUE i<20 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=12, ret=0, ret2=0, temp=-5, x={4:0}] [L54] COND TRUE i<20 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=13, ret=0, ret2=0, temp=-5, x={4:0}] [L54] COND TRUE i<20 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=14, ret=0, ret2=0, temp=-5, x={4:0}] [L54] COND TRUE i<20 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=15, ret=0, ret2=0, temp=-5, x={4:0}] [L54] COND TRUE i<20 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=16, ret=0, ret2=0, temp=-5, x={4:0}] [L54] COND TRUE i<20 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=17, ret=0, ret2=0, temp=-5, x={4:0}] [L54] COND TRUE i<20 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=18, ret=0, ret2=0, temp=-5, x={4:0}] [L54] COND TRUE i<20 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=19, ret=0, ret2=0, temp=-5, x={4:0}] [L54] COND FALSE !(i<20 -1) VAL [i=19, ret=0, ret2=0, temp=-5, x={4:0}] [L57] x[20 -1] = temp VAL [i=19, ret=0, ret2=0, temp=-5, x={4:0}] [L58] CALL, EXPR rangesum(x) VAL [x={4:0}] [L24] int i; [L25] long long ret; [L26] ret = 0 [L27] int cnt = 0; [L28] i = 0 VAL [cnt=0, i=0, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=0, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=0, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=1, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=1, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=1, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=2, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=2, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=2, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=3, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=3, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=3, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=4, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=4, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=4, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=5, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=5, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=5, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=6, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=6, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=6, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=7, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=7, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=7, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=8, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=8, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=8, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=9, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=9, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=9, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=10, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=10, ret=0, x={4:0}, x={4:0}] [L29] COND FALSE !(i > 20/2) VAL [cnt=0, i=10, ret=0, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=0, i=11, ret=0, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=0, i=11, ret=0, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=1, i=11, ret=-7, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=1, i=12, ret=-7, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=1, i=12, ret=-7, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=2, i=12, ret=-15, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=2, i=13, ret=-15, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=2, i=13, ret=-15, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=3, i=13, ret=-18, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=3, i=14, ret=-18, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=3, i=14, ret=-18, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=4, i=14, ret=-22, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=4, i=15, ret=-22, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=4, i=15, ret=-22, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=5, i=15, ret=-19, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=5, i=16, ret=-19, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=5, i=16, ret=-19, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=6, i=16, ret=-17, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=6, i=17, ret=-17, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=6, i=17, ret=-17, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=7, i=17, ret=-6, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=7, i=18, ret=-6, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=7, i=18, ret=-6, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=8, i=18, ret=-12, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=8, i=19, ret=-12, x={4:0}, x={4:0}] [L28] COND TRUE i < 20 VAL [cnt=8, i=19, ret=-12, x={4:0}, x={4:0}] [L29] COND TRUE i > 20/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=9, i=19, ret=-17, x={4:0}, x={4:0}] [L28] i++ VAL [cnt=9, i=20, ret=-17, x={4:0}, x={4:0}] [L28] COND FALSE !(i < 20) VAL [cnt=9, i=20, ret=-17, x={4:0}, x={4:0}] [L34] COND TRUE cnt !=0 [L35] return ret / cnt; VAL [\result=-1, cnt=9, i=20, ret=-17, x={4:0}, x={4:0}] [L58] RET, EXPR rangesum(x) VAL [i=19, rangesum(x)=-1, ret=0, ret2=0, temp=-5, x={4:0}] [L58] ret5 = rangesum(x) [L60] COND TRUE ret != ret2 || ret !=ret5 VAL [i=19, ret=0, ret2=0, ret5=-1, temp=-5, x={4:0}] [L61] reach_error() VAL [i=19, ret=0, ret2=0, ret5=-1, temp=-5, x={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 19.2s, OverallIterations: 14, TraceHistogramMax: 60, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 132 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 132 mSDsluCounter, 1383 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1027 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 354 IncrementalHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 356 mSDtfsCounter, 354 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2662 GetRequests, 2550 SyntacticMatches, 3 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=158occurred in iteration=13, InterpolantAutomatonStates: 128, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 11 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 5.9s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1901 NumberOfCodeBlocks, 1412 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 2737 ConstructedInterpolants, 0 QuantifiedInterpolants, 3203 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2994 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 24 InterpolantComputations, 4 PerfectInterpolantSequences, 33830/35270 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-06 17:09:31,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6da019ab-f787-4a28-8c7f-1cf62cd2744d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE