./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/reducercommutativity/rangesum10.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/rangesum10.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a --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 43671c88cb28f81a53d6c7fbea907e55b0f99c68f8a522c4103c0a12ddf9f652 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 17:29:31,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:29:31,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:29:31,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:29:31,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:29:31,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:29:31,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:29:31,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:29:31,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:29:31,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:29:31,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:29:31,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:29:31,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:29:31,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:29:31,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:29:31,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:29:31,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:29:31,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:29:31,603 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:29:31,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:29:31,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:29:31,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:29:31,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:29:31,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:29:31,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:29:31,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:29:31,621 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:29:31,622 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:29:31,623 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:29:31,624 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:29:31,624 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:29:31,625 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:29:31,626 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:29:31,626 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:29:31,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:29:31,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:29:31,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:29:31,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:29:31,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:29:31,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:29:31,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:29:31,641 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 17:29:31,685 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:29:31,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:29:31,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:29:31,686 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:29:31,687 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:29:31,687 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:29:31,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:29:31,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:29:31,688 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:29:31,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:29:31,688 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:29:31,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:29:31,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:29:31,689 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:29:31,689 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:29:31,689 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:29:31,689 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:29:31,690 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:29:31,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:29:31,690 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:29:31,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:29:31,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:29:31,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:29:31,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:29:31,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:29:31,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:29:31,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:29:31,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:29:31,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:29:31,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:29:31,692 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:29:31,692 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:29:31,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:29:31,692 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_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43671c88cb28f81a53d6c7fbea907e55b0f99c68f8a522c4103c0a12ddf9f652 [2022-11-21 17:29:31,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:29:32,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:29:32,031 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:29:32,032 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:29:32,033 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:29:32,034 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/reducercommutativity/rangesum10.i [2022-11-21 17:29:35,139 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:29:35,396 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:29:35,397 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/sv-benchmarks/c/reducercommutativity/rangesum10.i [2022-11-21 17:29:35,404 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/data/0528f6528/fbeff2c179684c6c8d7235f160abbe73/FLAGf33bdab78 [2022-11-21 17:29:35,423 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/data/0528f6528/fbeff2c179684c6c8d7235f160abbe73 [2022-11-21 17:29:35,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:29:35,427 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:29:35,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:29:35,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:29:35,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:29:35,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:29:35" (1/1) ... [2022-11-21 17:29:35,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d47624f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:35, skipping insertion in model container [2022-11-21 17:29:35,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:29:35" (1/1) ... [2022-11-21 17:29:35,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:29:35,501 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:29:35,666 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/sv-benchmarks/c/reducercommutativity/rangesum10.i[1465,1478] [2022-11-21 17:29:35,670 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:29:35,678 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:29:35,700 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/sv-benchmarks/c/reducercommutativity/rangesum10.i[1465,1478] [2022-11-21 17:29:35,701 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:29:35,715 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:29:35,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:35 WrapperNode [2022-11-21 17:29:35,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:29:35,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:29:35,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:29:35,718 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:29:35,725 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:35" (1/1) ... [2022-11-21 17:29:35,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:35" (1/1) ... [2022-11-21 17:29:35,754 INFO L138 Inliner]: procedures = 17, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-11-21 17:29:35,754 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:29:35,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:29:35,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:29:35,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:29:35,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:35" (1/1) ... [2022-11-21 17:29:35,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:35" (1/1) ... [2022-11-21 17:29:35,767 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:35" (1/1) ... [2022-11-21 17:29:35,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:35" (1/1) ... [2022-11-21 17:29:35,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:35" (1/1) ... [2022-11-21 17:29:35,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:35" (1/1) ... [2022-11-21 17:29:35,779 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:35" (1/1) ... [2022-11-21 17:29:35,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:35" (1/1) ... [2022-11-21 17:29:35,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:29:35,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:29:35,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:29:35,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:29:35,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:35" (1/1) ... [2022-11-21 17:29:35,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:29:35,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:35,817 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:29:35,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:29:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:29:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:29:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 17:29:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 17:29:35,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:29:35,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:29:35,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 17:29:35,870 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2022-11-21 17:29:35,870 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2022-11-21 17:29:35,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 17:29:35,995 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:29:35,997 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:29:36,241 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:29:36,247 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:29:36,247 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-21 17:29:36,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:29:36 BoogieIcfgContainer [2022-11-21 17:29:36,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:29:36,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:29:36,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:29:36,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:29:36,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:29:35" (1/3) ... [2022-11-21 17:29:36,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5dd1be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:29:36, skipping insertion in model container [2022-11-21 17:29:36,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:29:35" (2/3) ... [2022-11-21 17:29:36,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e5dd1be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:29:36, skipping insertion in model container [2022-11-21 17:29:36,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:29:36" (3/3) ... [2022-11-21 17:29:36,259 INFO L112 eAbstractionObserver]: Analyzing ICFG rangesum10.i [2022-11-21 17:29:36,279 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:29:36,279 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 17:29:36,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:29:36,336 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5c4620d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:29:36,337 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 17:29:36,341 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) [2022-11-21 17:29:36,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-21 17:29:36,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:36,351 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:36,352 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:29:36,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:36,357 INFO L85 PathProgramCache]: Analyzing trace with hash -275565944, now seen corresponding path program 1 times [2022-11-21 17:29:36,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:36,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180744836] [2022-11-21 17:29:36,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:36,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:36,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:36,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180744836] [2022-11-21 17:29:36,509 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-21 17:29:36,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142167493] [2022-11-21 17:29:36,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:36,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:36,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:36,514 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:36,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:29:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:36,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-21 17:29:36,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:36,680 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 17:29:36,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:29:36,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142167493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:36,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:36,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:29:36,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020564485] [2022-11-21 17:29:36,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:36,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 17:29:36,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:36,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 17:29:36,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 17:29:36,722 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 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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) [2022-11-21 17:29:36,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:36,745 INFO L93 Difference]: Finished difference Result 52 states and 73 transitions. [2022-11-21 17:29:36,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 17:29:36,750 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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 29 [2022-11-21 17:29:36,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:36,759 INFO L225 Difference]: With dead ends: 52 [2022-11-21 17:29:36,759 INFO L226 Difference]: Without dead ends: 24 [2022-11-21 17:29:36,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 17:29:36,767 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:36,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:29:36,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-21 17:29:36,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-21 17:29:36,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 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) [2022-11-21 17:29:36,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 30 transitions. [2022-11-21 17:29:36,835 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 30 transitions. Word has length 29 [2022-11-21 17:29:36,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:36,837 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 30 transitions. [2022-11-21 17:29:36,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 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) [2022-11-21 17:29:36,838 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 30 transitions. [2022-11-21 17:29:36,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-21 17:29:36,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:36,843 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:36,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:29:37,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-21 17:29:37,049 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:29:37,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:37,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1257002967, now seen corresponding path program 1 times [2022-11-21 17:29:37,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:37,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882252411] [2022-11-21 17:29:37,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:37,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:37,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:37,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:37,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882252411] [2022-11-21 17:29:37,089 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-21 17:29:37,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902260543] [2022-11-21 17:29:37,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:37,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:37,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:37,093 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:37,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:29:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:37,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:29:37,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:37,209 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 17:29:37,209 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:29:37,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902260543] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:37,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:37,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:29:37,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254802020] [2022-11-21 17:29:37,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:37,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:29:37,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:37,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:29:37,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:29:37,212 INFO L87 Difference]: Start difference. First operand 24 states and 30 transitions. 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) [2022-11-21 17:29:37,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:37,227 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2022-11-21 17:29:37,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:29:37,227 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 [2022-11-21 17:29:37,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:37,228 INFO L225 Difference]: With dead ends: 46 [2022-11-21 17:29:37,228 INFO L226 Difference]: Without dead ends: 26 [2022-11-21 17:29:37,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:29:37,230 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54 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 [2022-11-21 17:29:37,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:29:37,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-21 17:29:37,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2022-11-21 17:29:37,236 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) [2022-11-21 17:29:37,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2022-11-21 17:29:37,237 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 29 [2022-11-21 17:29:37,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:37,238 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2022-11-21 17:29:37,238 INFO L496 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) [2022-11-21 17:29:37,238 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2022-11-21 17:29:37,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-21 17:29:37,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:37,239 INFO L195 NwaCegarLoop]: 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] [2022-11-21 17:29:37,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:29:37,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:37,446 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:29:37,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:37,447 INFO L85 PathProgramCache]: Analyzing trace with hash -653100523, now seen corresponding path program 1 times [2022-11-21 17:29:37,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:37,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462147782] [2022-11-21 17:29:37,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:37,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:37,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:37,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:37,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462147782] [2022-11-21 17:29:37,493 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-21 17:29:37,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594388765] [2022-11-21 17:29:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:37,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:37,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:37,495 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:37,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:29:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:37,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:29:37,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:37,599 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-21 17:29:37,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:29:37,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594388765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:37,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:37,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:29:37,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713555050] [2022-11-21 17:29:37,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:37,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:29:37,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:37,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:29:37,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:29:37,603 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) [2022-11-21 17:29:37,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:37,620 INFO L93 Difference]: Finished difference Result 46 states and 61 transitions. [2022-11-21 17:29:37,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:29:37,621 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 [2022-11-21 17:29:37,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:37,622 INFO L225 Difference]: With dead ends: 46 [2022-11-21 17:29:37,622 INFO L226 Difference]: Without dead ends: 28 [2022-11-21 17:29:37,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:29:37,627 INFO L413 NwaCegarLoop]: 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 [2022-11-21 17:29:37,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 51 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:29:37,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-21 17:29:37,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-11-21 17:29:37,632 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) [2022-11-21 17:29:37,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2022-11-21 17:29:37,633 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 31 [2022-11-21 17:29:37,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:37,634 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2022-11-21 17:29:37,634 INFO L496 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) [2022-11-21 17:29:37,634 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-11-21 17:29:37,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-21 17:29:37,636 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:37,636 INFO L195 NwaCegarLoop]: 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] [2022-11-21 17:29:37,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:29:37,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:37,850 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:29:37,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:37,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1081404920, now seen corresponding path program 1 times [2022-11-21 17:29:37,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:37,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132264871] [2022-11-21 17:29:37,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:37,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:37,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:37,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:37,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132264871] [2022-11-21 17:29:37,902 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-21 17:29:37,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [899540278] [2022-11-21 17:29:37,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:37,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:37,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:37,919 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:37,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 17:29:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:38,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:29:38,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:38,028 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-21 17:29:38,028 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:29:38,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [899540278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:38,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:38,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:29:38,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508425787] [2022-11-21 17:29:38,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:38,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:29:38,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:38,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:29:38,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:29:38,031 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) [2022-11-21 17:29:38,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:38,045 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2022-11-21 17:29:38,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:29:38,046 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 [2022-11-21 17:29:38,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:38,047 INFO L225 Difference]: With dead ends: 44 [2022-11-21 17:29:38,047 INFO L226 Difference]: Without dead ends: 29 [2022-11-21 17:29:38,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:29:38,049 INFO L413 NwaCegarLoop]: 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 [2022-11-21 17:29:38,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 53 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:29:38,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-21 17:29:38,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-11-21 17:29:38,054 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) [2022-11-21 17:29:38,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2022-11-21 17:29:38,055 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 40 [2022-11-21 17:29:38,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:38,057 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2022-11-21 17:29:38,057 INFO L496 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) [2022-11-21 17:29:38,057 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2022-11-21 17:29:38,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-21 17:29:38,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:38,059 INFO L195 NwaCegarLoop]: 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] [2022-11-21 17:29:38,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 17:29:38,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:38,266 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:29:38,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:38,277 INFO L85 PathProgramCache]: Analyzing trace with hash -673301430, now seen corresponding path program 1 times [2022-11-21 17:29:38,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:38,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724755645] [2022-11-21 17:29:38,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:38,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:38,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:38,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724755645] [2022-11-21 17:29:38,304 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-21 17:29:38,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508028143] [2022-11-21 17:29:38,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:38,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:38,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:38,306 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:38,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 17:29:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:38,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:29:38,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:38,462 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-21 17:29:38,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:29:38,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508028143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:29:38,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:29:38,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:29:38,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098126138] [2022-11-21 17:29:38,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:29:38,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:29:38,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:38,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:29:38,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:29:38,465 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) [2022-11-21 17:29:38,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:38,477 INFO L93 Difference]: Finished difference Result 55 states and 73 transitions. [2022-11-21 17:29:38,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:29:38,477 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 [2022-11-21 17:29:38,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:38,480 INFO L225 Difference]: With dead ends: 55 [2022-11-21 17:29:38,480 INFO L226 Difference]: Without dead ends: 34 [2022-11-21 17:29:38,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:29:38,482 INFO L413 NwaCegarLoop]: 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 [2022-11-21 17:29:38,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 54 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:29:38,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-21 17:29:38,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2022-11-21 17:29:38,495 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) [2022-11-21 17:29:38,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2022-11-21 17:29:38,496 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 42 [2022-11-21 17:29:38,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:38,497 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2022-11-21 17:29:38,497 INFO L496 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) [2022-11-21 17:29:38,497 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2022-11-21 17:29:38,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-21 17:29:38,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:38,499 INFO L195 NwaCegarLoop]: 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] [2022-11-21 17:29:38,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 17:29:38,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:38,704 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:29:38,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:38,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1042180377, now seen corresponding path program 1 times [2022-11-21 17:29:38,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:38,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328640635] [2022-11-21 17:29:38,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:38,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:38,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-21 17:29:38,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:38,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-21 17:29:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:38,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-21 17:29:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:38,924 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-21 17:29:38,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:38,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328640635] [2022-11-21 17:29:38,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328640635] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:29:38,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707489035] [2022-11-21 17:29:38,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:38,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:38,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:38,927 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:38,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 17:29:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:39,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:29:39,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:39,104 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-21 17:29:39,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:29:39,164 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-21 17:29:39,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707489035] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:29:39,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:29:39,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2022-11-21 17:29:39,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307398358] [2022-11-21 17:29:39,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:29:39,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:29:39,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:39,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:29:39,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:29:39,175 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) [2022-11-21 17:29:39,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:39,254 INFO L93 Difference]: Finished difference Result 69 states and 92 transitions. [2022-11-21 17:29:39,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:29:39,254 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 [2022-11-21 17:29:39,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:39,255 INFO L225 Difference]: With dead ends: 69 [2022-11-21 17:29:39,256 INFO L226 Difference]: Without dead ends: 42 [2022-11-21 17:29:39,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:29:39,262 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 10 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:39,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 70 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:29:39,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-11-21 17:29:39,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2022-11-21 17:29:39,272 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) [2022-11-21 17:29:39,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-11-21 17:29:39,274 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 42 [2022-11-21 17:29:39,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:39,275 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-11-21 17:29:39,275 INFO L496 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) [2022-11-21 17:29:39,275 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-11-21 17:29:39,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-21 17:29:39,277 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:39,277 INFO L195 NwaCegarLoop]: 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] [2022-11-21 17:29:39,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 17:29:39,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:39,482 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:29:39,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:39,483 INFO L85 PathProgramCache]: Analyzing trace with hash -604386836, now seen corresponding path program 2 times [2022-11-21 17:29:39,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:39,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697074895] [2022-11-21 17:29:39,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:39,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:39,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:29:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:39,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-21 17:29:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:39,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 17:29:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:39,727 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 3 proven. 16 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-11-21 17:29:39,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:39,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697074895] [2022-11-21 17:29:39,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697074895] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:29:39,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331403708] [2022-11-21 17:29:39,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:29:39,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:39,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:39,732 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:39,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 17:29:39,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:29:39,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:29:39,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 17:29:39,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:39,940 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-21 17:29:39,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:29:40,045 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-11-21 17:29:40,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331403708] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:29:40,046 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 17:29:40,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2022-11-21 17:29:40,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581393436] [2022-11-21 17:29:40,047 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 17:29:40,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-21 17:29:40,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:40,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-21 17:29:40,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:29:40,053 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) [2022-11-21 17:29:40,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:40,155 INFO L93 Difference]: Finished difference Result 86 states and 112 transitions. [2022-11-21 17:29:40,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:29:40,156 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 [2022-11-21 17:29:40,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:40,162 INFO L225 Difference]: With dead ends: 86 [2022-11-21 17:29:40,162 INFO L226 Difference]: Without dead ends: 56 [2022-11-21 17:29:40,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-11-21 17:29:40,164 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 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, 0.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:40,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 112 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-21 17:29:40,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-21 17:29:40,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2022-11-21 17:29:40,179 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) [2022-11-21 17:29:40,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2022-11-21 17:29:40,183 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 57 [2022-11-21 17:29:40,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:40,183 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2022-11-21 17:29:40,184 INFO L496 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) [2022-11-21 17:29:40,184 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2022-11-21 17:29:40,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-21 17:29:40,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:40,186 INFO L195 NwaCegarLoop]: 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] [2022-11-21 17:29:40,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-21 17:29:40,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 17:29:40,392 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:29:40,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:40,393 INFO L85 PathProgramCache]: Analyzing trace with hash 948362870, now seen corresponding path program 1 times [2022-11-21 17:29:40,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:40,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052226865] [2022-11-21 17:29:40,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:40,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:40,426 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:29:40,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2061032484] [2022-11-21 17:29:40,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:40,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:40,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:40,428 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:40,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 17:29:40,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:29:40,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 17:29:40,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:40,655 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 61 proven. 7 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-11-21 17:29:40,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:29:40,713 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 5 proven. 81 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2022-11-21 17:29:40,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:40,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052226865] [2022-11-21 17:29:40,714 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 17:29:40,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061032484] [2022-11-21 17:29:40,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061032484] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:29:40,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:29:40,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-21 17:29:40,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425780461] [2022-11-21 17:29:40,715 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:29:40,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:29:40,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:40,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:29:40,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:29:40,717 INFO L87 Difference]: Start difference. First operand 51 states and 57 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) [2022-11-21 17:29:40,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:40,764 INFO L93 Difference]: Finished difference Result 89 states and 106 transitions. [2022-11-21 17:29:40,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:29:40,764 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 78 [2022-11-21 17:29:40,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:40,766 INFO L225 Difference]: With dead ends: 89 [2022-11-21 17:29:40,767 INFO L226 Difference]: Without dead ends: 63 [2022-11-21 17:29:40,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:29:40,770 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 9 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:40,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 75 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:29:40,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-11-21 17:29:40,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-11-21 17:29:40,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 58 states have internal predecessors, (63), 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) [2022-11-21 17:29:40,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2022-11-21 17:29:40,796 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 78 [2022-11-21 17:29:40,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:40,798 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2022-11-21 17:29:40,799 INFO L496 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) [2022-11-21 17:29:40,799 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2022-11-21 17:29:40,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-21 17:29:40,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:40,804 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 18, 10, 10, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:40,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 17:29:41,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:41,016 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:29:41,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:41,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1285665462, now seen corresponding path program 2 times [2022-11-21 17:29:41,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:41,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086887945] [2022-11-21 17:29:41,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:41,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:41,067 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:29:41,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1961295074] [2022-11-21 17:29:41,067 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 17:29:41,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:41,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:41,077 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:41,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 17:29:41,211 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 17:29:41,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:29:41,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-21 17:29:41,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:41,306 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 326 proven. 70 refuted. 0 times theorem prover too weak. 413 trivial. 0 not checked. [2022-11-21 17:29:41,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:29:41,417 INFO L134 CoverageAnalysis]: Checked inductivity of 809 backedges. 0 proven. 400 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2022-11-21 17:29:41,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:41,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086887945] [2022-11-21 17:29:41,417 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 17:29:41,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961295074] [2022-11-21 17:29:41,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961295074] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:29:41,418 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:29:41,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 12 [2022-11-21 17:29:41,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945947009] [2022-11-21 17:29:41,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:29:41,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-21 17:29:41,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:41,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-21 17:29:41,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:29:41,420 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 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) [2022-11-21 17:29:41,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:41,472 INFO L93 Difference]: Finished difference Result 110 states and 129 transitions. [2022-11-21 17:29:41,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 17:29:41,473 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 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 114 [2022-11-21 17:29:41,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:41,475 INFO L225 Difference]: With dead ends: 110 [2022-11-21 17:29:41,475 INFO L226 Difference]: Without dead ends: 72 [2022-11-21 17:29:41,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 210 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:29:41,476 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 23 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:41,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 122 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:29:41,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-11-21 17:29:41,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-11-21 17:29:41,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 67 states have (on average 1.1194029850746268) internal successors, (75), 67 states have internal predecessors, (75), 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) [2022-11-21 17:29:41,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 81 transitions. [2022-11-21 17:29:41,485 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 81 transitions. Word has length 114 [2022-11-21 17:29:41,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:41,486 INFO L495 AbstractCegarLoop]: Abstraction has 72 states and 81 transitions. [2022-11-21 17:29:41,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 12 states have internal predecessors, (63), 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) [2022-11-21 17:29:41,486 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 81 transitions. [2022-11-21 17:29:41,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-21 17:29:41,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:41,488 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 18, 12, 10, 10, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:41,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-21 17:29:41,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:41,694 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:29:41,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:41,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1864872287, now seen corresponding path program 3 times [2022-11-21 17:29:41,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:41,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087076400] [2022-11-21 17:29:41,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:41,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:41,729 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:29:41,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [141816767] [2022-11-21 17:29:41,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 17:29:41,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:41,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:41,731 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:41,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-21 17:29:41,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-21 17:29:41,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:29:41,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:29:41,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:41,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1511 backedges. 650 proven. 1 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2022-11-21 17:29:41,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:29:41,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1511 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1510 trivial. 0 not checked. [2022-11-21 17:29:41,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:41,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087076400] [2022-11-21 17:29:41,919 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 17:29:41,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [141816767] [2022-11-21 17:29:41,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [141816767] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:29:41,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:29:41,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-11-21 17:29:41,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008591109] [2022-11-21 17:29:41,921 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:29:41,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:29:41,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:41,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:29:41,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:29:41,923 INFO L87 Difference]: Start difference. First operand 72 states and 81 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) [2022-11-21 17:29:41,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:41,946 INFO L93 Difference]: Finished difference Result 119 states and 136 transitions. [2022-11-21 17:29:41,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 17:29:41,947 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 141 [2022-11-21 17:29:41,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:41,948 INFO L225 Difference]: With dead ends: 119 [2022-11-21 17:29:41,949 INFO L226 Difference]: Without dead ends: 78 [2022-11-21 17:29:41,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:29:41,950 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 4 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:41,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 103 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:29:41,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-11-21 17:29:41,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-11-21 17:29:41,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 73 states have (on average 1.1095890410958904) internal successors, (81), 73 states have internal predecessors, (81), 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) [2022-11-21 17:29:41,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2022-11-21 17:29:41,961 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 141 [2022-11-21 17:29:41,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:41,961 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2022-11-21 17:29:41,962 INFO L496 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) [2022-11-21 17:29:41,962 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2022-11-21 17:29:41,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-21 17:29:41,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:41,964 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 18, 12, 10, 10, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:41,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-21 17:29:42,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 17:29:42,170 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:29:42,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:42,171 INFO L85 PathProgramCache]: Analyzing trace with hash -105377125, now seen corresponding path program 4 times [2022-11-21 17:29:42,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:42,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692611902] [2022-11-21 17:29:42,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:42,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:42,230 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:29:42,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1264453025] [2022-11-21 17:29:42,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 17:29:42,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:42,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:42,232 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:42,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-21 17:29:42,424 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 17:29:42,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 17:29:42,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 17:29:42,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:29:42,493 INFO L134 CoverageAnalysis]: Checked inductivity of 1526 backedges. 650 proven. 16 refuted. 0 times theorem prover too weak. 860 trivial. 0 not checked. [2022-11-21 17:29:42,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 17:29:42,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1526 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 1510 trivial. 0 not checked. [2022-11-21 17:29:42,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:29:42,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692611902] [2022-11-21 17:29:42,580 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-21 17:29:42,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264453025] [2022-11-21 17:29:42,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264453025] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 17:29:42,581 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-21 17:29:42,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-21 17:29:42,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708257801] [2022-11-21 17:29:42,582 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-21 17:29:42,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-21 17:29:42,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:29:42,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-21 17:29:42,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:29:42,584 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 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) [2022-11-21 17:29:42,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:29:42,626 INFO L93 Difference]: Finished difference Result 129 states and 148 transitions. [2022-11-21 17:29:42,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:29:42,627 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 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 147 [2022-11-21 17:29:42,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:29:42,628 INFO L225 Difference]: With dead ends: 129 [2022-11-21 17:29:42,629 INFO L226 Difference]: Without dead ends: 88 [2022-11-21 17:29:42,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 282 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:29:42,631 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 9 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:29:42,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 78 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:29:42,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-21 17:29:42,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-11-21 17:29:42,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 83 states have (on average 1.0963855421686748) internal successors, (91), 83 states have internal predecessors, (91), 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) [2022-11-21 17:29:42,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2022-11-21 17:29:42,655 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 147 [2022-11-21 17:29:42,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:29:42,657 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2022-11-21 17:29:42,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 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) [2022-11-21 17:29:42,658 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2022-11-21 17:29:42,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-21 17:29:42,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:29:42,660 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 18, 12, 10, 10, 9, 9, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:29:42,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-21 17:29:42,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:42,868 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:29:42,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:29:42,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1925080943, now seen corresponding path program 5 times [2022-11-21 17:29:42,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:29:42,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000524244] [2022-11-21 17:29:42,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:29:42,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:29:42,900 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-21 17:29:42,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1353817210] [2022-11-21 17:29:42,900 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 17:29:42,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:42,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:29:42,907 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:29:42,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-21 17:29:48,634 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2022-11-21 17:29:48,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-11-21 17:29:48,634 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 17:29:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 17:29:49,188 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 17:29:49,188 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 17:29:49,189 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-21 17:29:49,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-21 17:29:49,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:29:49,414 INFO L444 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1] [2022-11-21 17:29:49,418 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 17:29:49,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 05:29:49 BoogieIcfgContainer [2022-11-21 17:29:49,517 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 17:29:49,518 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 17:29:49,518 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 17:29:49,518 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 17:29:49,519 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:29:36" (3/4) ... [2022-11-21 17:29:49,521 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-21 17:29:49,640 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 17:29:49,640 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 17:29:49,641 INFO L158 Benchmark]: Toolchain (without parser) took 14213.93ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 139.9MB in the beginning and 84.8MB in the end (delta: 55.1MB). Peak memory consumption was 87.7MB. Max. memory is 16.1GB. [2022-11-21 17:29:49,641 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 127.9MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:29:49,641 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.44ms. Allocated memory is still 167.8MB. Free memory was 139.9MB in the beginning and 129.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 17:29:49,642 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.85ms. Allocated memory is still 167.8MB. Free memory was 129.1MB in the beginning and 127.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:29:49,642 INFO L158 Benchmark]: Boogie Preprocessor took 31.06ms. Allocated memory is still 167.8MB. Free memory was 127.4MB in the beginning and 125.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:29:49,643 INFO L158 Benchmark]: RCFGBuilder took 463.27ms. Allocated memory is still 167.8MB. Free memory was 125.7MB in the beginning and 113.8MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 17:29:49,643 INFO L158 Benchmark]: TraceAbstraction took 13264.97ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 113.1MB in the beginning and 93.2MB in the end (delta: 19.9MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. [2022-11-21 17:29:49,643 INFO L158 Benchmark]: Witness Printer took 122.45ms. Allocated memory is still 201.3MB. Free memory was 93.2MB in the beginning and 84.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 17:29:49,645 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 127.9MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.44ms. Allocated memory is still 167.8MB. Free memory was 139.9MB in the beginning and 129.1MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.85ms. Allocated memory is still 167.8MB. Free memory was 129.1MB in the beginning and 127.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.06ms. Allocated memory is still 167.8MB. Free memory was 127.4MB in the beginning and 125.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 463.27ms. Allocated memory is still 167.8MB. Free memory was 125.7MB in the beginning and 113.8MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 13264.97ms. Allocated memory was 167.8MB in the beginning and 201.3MB in the end (delta: 33.6MB). Free memory was 113.1MB in the beginning and 93.2MB in the end (delta: 19.9MB). Peak memory consumption was 54.2MB. Max. memory is 16.1GB. * Witness Printer took 122.45ms. Allocated memory is still 201.3MB. Free memory was 93.2MB in the beginning and 84.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. 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[10]; [L43] CALL init_nondet(x) [L16] int i; [L17] i = 0 VAL [i=0, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=1, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=2, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=3, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=4, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=5, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=6, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=7, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=8, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=9, x={3:0}, x={3:0}] [L17] COND TRUE i < 10 [L18] x[i] = __VERIFIER_nondet_int() [L17] i++ VAL [i=10, x={3:0}, x={3:0}] [L17] COND FALSE !(i < 10) VAL [i=10, x={3:0}, x={3:0}] [L43] RET init_nondet(x) [L44] int temp; [L45] int ret; [L46] int ret2; [L47] int ret5; VAL [x={3:0}] [L49] CALL, EXPR rangesum(x) VAL [x={3:0}] [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={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=1, i=6, ret=-2147483637, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=1, i=7, ret=-2147483637, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=1, i=7, ret=-2147483637, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=2, i=7, ret=-4294967274, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=2, i=8, ret=-4294967274, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=2, i=8, ret=-4294967274, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=3, i=8, ret=-2147483632, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=3, i=9, ret=-2147483632, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=3, i=9, ret=-2147483632, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=4, i=9, ret=8, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=4, i=10, ret=8, x={3:0}, x={3:0}] [L28] COND FALSE !(i < 10) VAL [cnt=4, i=10, ret=8, x={3:0}, x={3:0}] [L34] COND TRUE cnt !=0 [L35] return ret / cnt; VAL [\result=2, cnt=4, i=10, ret=8, x={3:0}, x={3:0}] [L49] RET, EXPR rangesum(x) VAL [rangesum(x)=2, x={3:0}] [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=2, temp=2147483647, x={3:0}] [L52] CALL, EXPR rangesum(x) VAL [x={3:0}] [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={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=1, i=6, ret=-2147483637, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=1, i=7, ret=-2147483637, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=1, i=7, ret=-2147483637, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=2, i=7, ret=-4294967274, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=2, i=8, ret=-4294967274, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=2, i=8, ret=-4294967274, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=3, i=8, ret=-2147483632, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=3, i=9, ret=-2147483632, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=3, i=9, ret=-2147483632, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=4, i=9, ret=8, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=4, i=10, ret=8, x={3:0}, x={3:0}] [L28] COND FALSE !(i < 10) VAL [cnt=4, i=10, ret=8, x={3:0}, x={3:0}] [L34] COND TRUE cnt !=0 [L35] return ret / cnt; VAL [\result=2, cnt=4, i=10, ret=8, x={3:0}, x={3:0}] [L52] RET, EXPR rangesum(x) VAL [rangesum(x)=2, ret=2, temp=2147483647, x={3:0}] [L52] ret2 = rangesum(x) [L53] EXPR x[0] [L53] temp=x[0] [L54] int i =0 ; VAL [i=0, ret=2, ret2=2, temp=2147483646, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=1, ret=2, ret2=2, temp=2147483646, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=2, ret=2, ret2=2, temp=2147483646, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=3, ret=2, ret2=2, temp=2147483646, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=4, ret=2, ret2=2, temp=2147483646, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=5, ret=2, ret2=2, temp=2147483646, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=6, ret=2, ret2=2, temp=2147483646, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=7, ret=2, ret2=2, temp=2147483646, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=8, ret=2, ret2=2, temp=2147483646, x={3:0}] [L54] COND TRUE i<10 -1 [L55] EXPR x[i+1] [L55] x[i] = x[i+1] [L54] i++ VAL [i=9, ret=2, ret2=2, temp=2147483646, x={3:0}] [L54] COND FALSE !(i<10 -1) VAL [i=9, ret=2, ret2=2, temp=2147483646, x={3:0}] [L57] x[10 -1] = temp VAL [i=9, ret=2, ret2=2, temp=2147483646, x={3:0}] [L58] CALL, EXPR rangesum(x) VAL [x={3:0}] [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={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=0, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=1, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=2, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=3, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=4, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L29] COND FALSE !(i > 10/2) VAL [cnt=0, i=5, ret=0, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=0, i=6, ret=0, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=1, i=6, ret=-2147483637, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=1, i=7, ret=-2147483637, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=1, i=7, ret=-2147483637, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=2, i=7, ret=5, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=2, i=8, ret=5, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=2, i=8, ret=5, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=3, i=8, ret=2147483645, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=3, i=9, ret=2147483645, x={3:0}, x={3:0}] [L28] COND TRUE i < 10 VAL [cnt=3, i=9, ret=2147483645, x={3:0}, x={3:0}] [L29] COND TRUE i > 10/2 [L30] EXPR x[i] [L30] ret = ret + x[i] [L31] cnt = cnt + 1 VAL [cnt=4, i=9, ret=4294967291, x={3:0}, x={3:0}] [L28] i++ VAL [cnt=4, i=10, ret=4294967291, x={3:0}, x={3:0}] [L28] COND FALSE !(i < 10) VAL [cnt=4, i=10, ret=4294967291, x={3:0}, x={3:0}] [L34] COND TRUE cnt !=0 [L35] return ret / cnt; VAL [\result=1073741822, cnt=4, i=10, ret=4294967291, x={3:0}, x={3:0}] [L58] RET, EXPR rangesum(x) VAL [i=9, rangesum(x)=1073741822, ret=2, ret2=2, temp=2147483646, x={3:0}] [L58] ret5 = rangesum(x) [L60] COND TRUE ret != ret2 || ret !=ret5 VAL [i=9, ret=2, ret2=2, ret5=1073741822, temp=2147483646, x={3:0}] [L61] reach_error() VAL [i=9, ret=2, ret2=2, ret5=1073741822, temp=2147483646, x={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 13.1s, OverallIterations: 12, TraceHistogramMax: 30, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 82 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 82 mSDsluCounter, 806 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 503 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 200 IncrementalHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 303 mSDtfsCounter, 200 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1335 GetRequests, 1276 SyntacticMatches, 7 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred in iteration=11, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 11 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 6.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 1177 NumberOfCodeBlocks, 1073 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 1409 ConstructedInterpolants, 0 QuantifiedInterpolants, 1661 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2388 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 19 InterpolantComputations, 5 PerfectInterpolantSequences, 8037/8699 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! [2022-11-21 17:29:49,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_50b74bae-ff4f-41af-9862-606d189abf32/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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