./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-simple/nested_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/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_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-simple/nested_2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d28004f57c6988e792d07d7254dfd532aeffd19f38063d85c3bfa2c0f504914f --- 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 17:24:11,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:24:11,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:24:11,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:24:11,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:24:11,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:24:11,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:24:11,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:24:11,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:24:11,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:24:11,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:24:11,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:24:11,620 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:24:11,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:24:11,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:24:11,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:24:11,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:24:11,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:24:11,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:24:11,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:24:11,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:24:11,638 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:24:11,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:24:11,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:24:11,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:24:11,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:24:11,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:24:11,656 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:24:11,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:24:11,658 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:24:11,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:24:11,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:24:11,662 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:24:11,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:24:11,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:24:11,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:24:11,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:24:11,668 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:24:11,668 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:24:11,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:24:11,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:24:11,672 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-21 17:24:11,710 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:24:11,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:24:11,722 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:24:11,722 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:24:11,723 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:24:11,724 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:24:11,724 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:24:11,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:24:11,725 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:24:11,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:24:11,726 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:24:11,727 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-21 17:24:11,727 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:24:11,727 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:24:11,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:24:11,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:24:11,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:24:11,728 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:24:11,728 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-21 17:24:11,728 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:24:11,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:24:11,729 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:24:11,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:24:11,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:24:11,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:24:11,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:24:11,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:24:11,730 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:24:11,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:24:11,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:24:11,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:24:11,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:24:11,732 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:24:11,732 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:24:11,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:24:11,732 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_221c6d24-a986-45ba-b779-ea75b719a7e4/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d28004f57c6988e792d07d7254dfd532aeffd19f38063d85c3bfa2c0f504914f [2022-11-21 17:24:11,994 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:24:12,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:24:12,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:24:12,035 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:24:12,036 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:24:12,037 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/loop-simple/nested_2.c [2022-11-21 17:24:15,179 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:24:15,387 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:24:15,387 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/sv-benchmarks/c/loop-simple/nested_2.c [2022-11-21 17:24:15,394 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/data/966d2862a/c33f141514e848bbb04d02ed9d63e068/FLAG2abf0625f [2022-11-21 17:24:15,414 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/data/966d2862a/c33f141514e848bbb04d02ed9d63e068 [2022-11-21 17:24:15,417 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:24:15,418 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:24:15,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:24:15,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:24:15,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:24:15,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:24:15" (1/1) ... [2022-11-21 17:24:15,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c814fff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:15, skipping insertion in model container [2022-11-21 17:24:15,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:24:15" (1/1) ... [2022-11-21 17:24:15,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:24:15,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:24:15,598 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_221c6d24-a986-45ba-b779-ea75b719a7e4/sv-benchmarks/c/loop-simple/nested_2.c[730,743] [2022-11-21 17:24:15,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:24:15,611 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:24:15,623 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_221c6d24-a986-45ba-b779-ea75b719a7e4/sv-benchmarks/c/loop-simple/nested_2.c[730,743] [2022-11-21 17:24:15,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:24:15,638 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:24:15,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:15 WrapperNode [2022-11-21 17:24:15,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:24:15,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:24:15,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:24:15,641 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:24:15,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:15" (1/1) ... [2022-11-21 17:24:15,655 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:15" (1/1) ... [2022-11-21 17:24:15,671 INFO L138 Inliner]: procedures = 10, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2022-11-21 17:24:15,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:24:15,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:24:15,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:24:15,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:24:15,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:15" (1/1) ... [2022-11-21 17:24:15,679 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:15" (1/1) ... [2022-11-21 17:24:15,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:15" (1/1) ... [2022-11-21 17:24:15,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:15" (1/1) ... [2022-11-21 17:24:15,683 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:15" (1/1) ... [2022-11-21 17:24:15,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:15" (1/1) ... [2022-11-21 17:24:15,687 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:15" (1/1) ... [2022-11-21 17:24:15,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:15" (1/1) ... [2022-11-21 17:24:15,690 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:24:15,691 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:24:15,691 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:24:15,691 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:24:15,692 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:15" (1/1) ... [2022-11-21 17:24:15,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:24:15,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:15,727 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:24:15,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:24:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:24:15,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:24:15,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:24:15,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:24:15,858 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:24:15,860 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:24:16,024 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:24:16,031 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:24:16,031 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-21 17:24:16,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:24:16 BoogieIcfgContainer [2022-11-21 17:24:16,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:24:16,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:24:16,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:24:16,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:24:16,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:24:15" (1/3) ... [2022-11-21 17:24:16,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad2d1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:24:16, skipping insertion in model container [2022-11-21 17:24:16,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:24:15" (2/3) ... [2022-11-21 17:24:16,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad2d1c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:24:16, skipping insertion in model container [2022-11-21 17:24:16,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:24:16" (3/3) ... [2022-11-21 17:24:16,046 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_2.c [2022-11-21 17:24:16,067 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:24:16,068 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-21 17:24:16,137 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:24:16,145 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;@47c13eb5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:24:16,146 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-21 17:24:16,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.75) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:16,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-21 17:24:16,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:16,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-21 17:24:16,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-21 17:24:16,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:16,183 INFO L85 PathProgramCache]: Analyzing trace with hash 28698866, now seen corresponding path program 1 times [2022-11-21 17:24:16,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:16,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742483892] [2022-11-21 17:24:16,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:16,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:16,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:16,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:16,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742483892] [2022-11-21 17:24:16,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742483892] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:16,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:16,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 17:24:16,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832265172] [2022-11-21 17:24:16,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:16,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:24:16,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:16,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:24:16,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:24:16,525 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.75) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:16,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:16,589 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2022-11-21 17:24:16,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:24:16,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-21 17:24:16,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:16,600 INFO L225 Difference]: With dead ends: 35 [2022-11-21 17:24:16,601 INFO L226 Difference]: Without dead ends: 15 [2022-11-21 17:24:16,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:24:16,607 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:16,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 24 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:24:16,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-21 17:24:16,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-21 17:24:16,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:16,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-11-21 17:24:16,641 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 5 [2022-11-21 17:24:16,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:16,642 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-11-21 17:24:16,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:16,643 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-11-21 17:24:16,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 17:24:16,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:16,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:16,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:24:16,644 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-21 17:24:16,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:16,645 INFO L85 PathProgramCache]: Analyzing trace with hash 271116024, now seen corresponding path program 1 times [2022-11-21 17:24:16,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:16,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959251674] [2022-11-21 17:24:16,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:16,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:16,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:16,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:16,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959251674] [2022-11-21 17:24:16,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959251674] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:24:16,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013659107] [2022-11-21 17:24:16,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:16,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:16,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:16,715 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:16,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:24:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:16,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:24:16,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:16,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:24:16,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:24:16,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013659107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:16,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:24:16,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-21 17:24:16,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647836676] [2022-11-21 17:24:16,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:16,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:24:16,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:16,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:24:16,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:24:16,822 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:16,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:16,839 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-11-21 17:24:16,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:24:16,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-21 17:24:16,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:16,841 INFO L225 Difference]: With dead ends: 27 [2022-11-21 17:24:16,841 INFO L226 Difference]: Without dead ends: 26 [2022-11-21 17:24:16,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:24:16,843 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 16 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 17:24:16,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 16 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:24:16,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-21 17:24:16,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2022-11-21 17:24:16,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:16,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-21 17:24:16,853 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 8 [2022-11-21 17:24:16,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:16,854 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-21 17:24:16,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:16,855 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-21 17:24:16,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-21 17:24:16,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:16,857 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:16,864 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:17,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:17,063 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-21 17:24:17,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:17,064 INFO L85 PathProgramCache]: Analyzing trace with hash 271116079, now seen corresponding path program 1 times [2022-11-21 17:24:17,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:17,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530771746] [2022-11-21 17:24:17,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:17,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:24:17,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:17,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530771746] [2022-11-21 17:24:17,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530771746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:17,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:24:17,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 17:24:17,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860863526] [2022-11-21 17:24:17,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:17,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:24:17,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:17,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:24:17,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-21 17:24:17,106 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:17,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:17,130 INFO L93 Difference]: Finished difference Result 23 states and 27 transitions. [2022-11-21 17:24:17,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:24:17,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-21 17:24:17,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:17,132 INFO L225 Difference]: With dead ends: 23 [2022-11-21 17:24:17,132 INFO L226 Difference]: Without dead ends: 22 [2022-11-21 17:24:17,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 17:24:17,134 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:17,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:24:17,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-21 17:24:17,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-21 17:24:17,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:17,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-11-21 17:24:17,140 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 8 [2022-11-21 17:24:17,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:17,141 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-11-21 17:24:17,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:17,141 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-11-21 17:24:17,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 17:24:17,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:17,142 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:24:17,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:24:17,143 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-21 17:24:17,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:17,143 INFO L85 PathProgramCache]: Analyzing trace with hash -185337788, now seen corresponding path program 1 times [2022-11-21 17:24:17,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:17,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851813274] [2022-11-21 17:24:17,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:17,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:17,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:17,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:17,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:17,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851813274] [2022-11-21 17:24:17,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851813274] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:24:17,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917239356] [2022-11-21 17:24:17,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:17,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:17,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:17,198 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:17,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 17:24:17,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:17,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:24:17,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:17,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 17:24:17,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:24:17,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917239356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:17,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:24:17,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-21 17:24:17,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389932888] [2022-11-21 17:24:17,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:17,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:24:17,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:17,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:24:17,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:24:17,304 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:17,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:17,334 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2022-11-21 17:24:17,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:24:17,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-21 17:24:17,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:17,338 INFO L225 Difference]: With dead ends: 22 [2022-11-21 17:24:17,338 INFO L226 Difference]: Without dead ends: 21 [2022-11-21 17:24:17,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:24:17,340 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 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 17:24:17,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:24:17,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-21 17:24:17,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-21 17:24:17,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.263157894736842) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:17,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2022-11-21 17:24:17,354 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 9 [2022-11-21 17:24:17,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:17,357 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2022-11-21 17:24:17,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:17,358 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2022-11-21 17:24:17,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-21 17:24:17,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:17,358 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2022-11-21 17:24:17,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:17,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:17,565 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-21 17:24:17,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:17,566 INFO L85 PathProgramCache]: Analyzing trace with hash -185336090, now seen corresponding path program 1 times [2022-11-21 17:24:17,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:17,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723364607] [2022-11-21 17:24:17,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:17,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:17,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:17,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:17,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723364607] [2022-11-21 17:24:17,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723364607] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:24:17,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479247361] [2022-11-21 17:24:17,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:17,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:17,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:17,679 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:17,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 17:24:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:17,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-21 17:24:17,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:17,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:24:17,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:24:17,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479247361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:17,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:24:17,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-21 17:24:17,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333339094] [2022-11-21 17:24:17,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:17,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 17:24:17,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:17,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 17:24:17,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:24:17,774 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:17,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:17,793 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-11-21 17:24:17,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 17:24:17,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-21 17:24:17,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:17,795 INFO L225 Difference]: With dead ends: 21 [2022-11-21 17:24:17,795 INFO L226 Difference]: Without dead ends: 20 [2022-11-21 17:24:17,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:24:17,796 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 8 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:24:17,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 7 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:24:17,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-21 17:24:17,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 16. [2022-11-21 17:24:17,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:17,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-11-21 17:24:17,802 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2022-11-21 17:24:17,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:17,802 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-11-21 17:24:17,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:17,802 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-11-21 17:24:17,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-21 17:24:17,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:24:17,803 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-21 17:24:17,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:18,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:18,009 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-11-21 17:24:18,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:24:18,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1874857478, now seen corresponding path program 1 times [2022-11-21 17:24:18,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:24:18,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200729527] [2022-11-21 17:24:18,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:18,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:24:18,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:18,062 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 17:24:18,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:24:18,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200729527] [2022-11-21 17:24:18,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200729527] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:24:18,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484973002] [2022-11-21 17:24:18,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:24:18,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:18,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:24:18,065 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:24:18,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 17:24:18,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:24:18,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:24:18,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:24:18,156 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-21 17:24:18,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:24:18,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484973002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:24:18,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:24:18,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-21 17:24:18,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841245806] [2022-11-21 17:24:18,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:24:18,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:24:18,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:24:18,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:24:18,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:24:18,160 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:18,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:24:18,174 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2022-11-21 17:24:18,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:24:18,175 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-21 17:24:18,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:24:18,177 INFO L225 Difference]: With dead ends: 16 [2022-11-21 17:24:18,177 INFO L226 Difference]: Without dead ends: 0 [2022-11-21 17:24:18,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:24:18,179 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 7 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 17:24:18,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 7 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:24:18,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-21 17:24:18,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-21 17:24:18,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:18,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-21 17:24:18,187 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2022-11-21 17:24:18,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:24:18,188 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 17:24:18,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 17:24:18,188 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-21 17:24:18,189 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-21 17:24:18,191 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-21 17:24:18,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-21 17:24:18,192 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-21 17:24:18,193 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-21 17:24:18,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 17:24:18,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:24:18,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-21 17:24:18,474 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2022-11-21 17:24:18,474 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-21 17:24:18,474 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2022-11-21 17:24:18,474 INFO L899 garLoopResultBuilder]: For program point L25-1(lines 25 27) no Hoare annotation was computed. [2022-11-21 17:24:18,474 INFO L899 garLoopResultBuilder]: For program point L21-2(lines 21 23) no Hoare annotation was computed. [2022-11-21 17:24:18,475 INFO L899 garLoopResultBuilder]: For program point L21-3(line 21) no Hoare annotation was computed. [2022-11-21 17:24:18,475 INFO L895 garLoopResultBuilder]: At program point L21-4(lines 21 23) the Hoare annotation is: (let ((.cse0 (< |ULTIMATE.start_main_~a~0#1| 6)) (.cse1 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (and (= |ULTIMATE.start_main_~b~0#1| 0) .cse0 .cse1) (and .cse0 (<= 1 |ULTIMATE.start_main_~b~0#1|) .cse1))) [2022-11-21 17:24:18,475 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-21 17:24:18,475 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 21) no Hoare annotation was computed. [2022-11-21 17:24:18,475 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2022-11-21 17:24:18,476 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-21 17:24:18,476 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-21 17:24:18,476 INFO L902 garLoopResultBuilder]: At program point L28(lines 15 29) the Hoare annotation is: true [2022-11-21 17:24:18,476 INFO L899 garLoopResultBuilder]: For program point L20-2(lines 20 24) no Hoare annotation was computed. [2022-11-21 17:24:18,476 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2022-11-21 17:24:18,476 INFO L895 garLoopResultBuilder]: At program point L20-4(lines 20 24) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~b~0#1|) (<= 0 |ULTIMATE.start_main_~a~0#1|)) [2022-11-21 17:24:18,477 INFO L899 garLoopResultBuilder]: For program point L20-5(lines 15 29) no Hoare annotation was computed. [2022-11-21 17:24:18,480 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-21 17:24:18,482 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 17:24:18,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 05:24:18 BoogieIcfgContainer [2022-11-21 17:24:18,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 17:24:18,498 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 17:24:18,498 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 17:24:18,498 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 17:24:18,499 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:24:16" (3/4) ... [2022-11-21 17:24:18,502 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 17:24:18,512 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-21 17:24:18,512 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-21 17:24:18,512 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 17:24:18,512 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 17:24:18,543 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 17:24:18,543 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 17:24:18,544 INFO L158 Benchmark]: Toolchain (without parser) took 3125.43ms. Allocated memory was 151.0MB in the beginning and 195.0MB in the end (delta: 44.0MB). Free memory was 105.9MB in the beginning and 92.9MB in the end (delta: 13.0MB). Peak memory consumption was 59.5MB. Max. memory is 16.1GB. [2022-11-21 17:24:18,544 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 151.0MB. Free memory is still 90.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:24:18,544 INFO L158 Benchmark]: CACSL2BoogieTranslator took 219.35ms. Allocated memory is still 151.0MB. Free memory was 105.9MB in the beginning and 96.0MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 17:24:18,545 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.46ms. Allocated memory is still 151.0MB. Free memory was 96.0MB in the beginning and 94.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:24:18,545 INFO L158 Benchmark]: Boogie Preprocessor took 17.94ms. Allocated memory is still 151.0MB. Free memory was 94.4MB in the beginning and 93.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 17:24:18,545 INFO L158 Benchmark]: RCFGBuilder took 343.62ms. Allocated memory is still 151.0MB. Free memory was 93.3MB in the beginning and 83.9MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 17:24:18,546 INFO L158 Benchmark]: TraceAbstraction took 2459.91ms. Allocated memory was 151.0MB in the beginning and 195.0MB in the end (delta: 44.0MB). Free memory was 83.6MB in the beginning and 95.0MB in the end (delta: -11.4MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2022-11-21 17:24:18,546 INFO L158 Benchmark]: Witness Printer took 45.26ms. Allocated memory is still 195.0MB. Free memory was 95.0MB in the beginning and 92.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 17:24:18,548 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 151.0MB. Free memory is still 90.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 219.35ms. Allocated memory is still 151.0MB. Free memory was 105.9MB in the beginning and 96.0MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.46ms. Allocated memory is still 151.0MB. Free memory was 96.0MB in the beginning and 94.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.94ms. Allocated memory is still 151.0MB. Free memory was 94.4MB in the beginning and 93.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 343.62ms. Allocated memory is still 151.0MB. Free memory was 93.3MB in the beginning and 83.9MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2459.91ms. Allocated memory was 151.0MB in the beginning and 195.0MB in the end (delta: 44.0MB). Free memory was 83.6MB in the beginning and 95.0MB in the end (delta: -11.4MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. * Witness Printer took 45.26ms. Allocated memory is still 195.0MB. Free memory was 95.0MB in the beginning and 92.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 44 IncrementalHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 51 mSDtfsCounter, 44 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=2, InterpolantAutomatonStates: 19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 10 NumberOfFragments, 29 HoareAnnotationTreeSize, 3 FomulaSimplifications, 21 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 31 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 173 SizeOfPredicates, 0 NumberOfNonLiveVariables, 171 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 26/32 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 - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: ((b == 0 && a < 6) && 0 <= a) || ((a < 6 && 1 <= b) && 0 <= a) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 <= b && 0 <= a RESULT: Ultimate proved your program to be correct! [2022-11-21 17:24:18,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_221c6d24-a986-45ba-b779-ea75b719a7e4/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 Result: TRUE