./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f64d9b496c4f5484a31fbfb0a7c6af8258ace1e653eee382e318ab929fd1285 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-07 01:48:44,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-07 01:48:44,672 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-07 01:48:44,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-07 01:48:44,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-07 01:48:44,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-07 01:48:44,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-07 01:48:44,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-07 01:48:44,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-07 01:48:44,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-07 01:48:44,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-07 01:48:44,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-07 01:48:44,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-07 01:48:44,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-07 01:48:44,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-07 01:48:44,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-07 01:48:44,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-07 01:48:44,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-07 01:48:44,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-07 01:48:44,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-07 01:48:44,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-07 01:48:44,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-07 01:48:44,728 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-07 01:48:44,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-07 01:48:44,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-07 01:48:44,733 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-07 01:48:44,733 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-07 01:48:44,734 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-07 01:48:44,735 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-07 01:48:44,736 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-07 01:48:44,736 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-07 01:48:44,737 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-07 01:48:44,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-07 01:48:44,739 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-07 01:48:44,740 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-07 01:48:44,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-07 01:48:44,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-07 01:48:44,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-07 01:48:44,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-07 01:48:44,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-07 01:48:44,742 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-07 01:48:44,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-07 01:48:44,766 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-07 01:48:44,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-07 01:48:44,770 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-07 01:48:44,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-07 01:48:44,771 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-07 01:48:44,771 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-07 01:48:44,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-07 01:48:44,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-07 01:48:44,772 INFO L138 SettingsManager]: * Use SBE=true [2021-12-07 01:48:44,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-07 01:48:44,773 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-07 01:48:44,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-07 01:48:44,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-07 01:48:44,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-07 01:48:44,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-07 01:48:44,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-07 01:48:44,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-07 01:48:44,774 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-07 01:48:44,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-07 01:48:44,774 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-07 01:48:44,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-07 01:48:44,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-07 01:48:44,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-07 01:48:44,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-07 01:48:44,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:48:44,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-07 01:48:44,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-07 01:48:44,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-07 01:48:44,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-07 01:48:44,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-07 01:48:44,777 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-07 01:48:44,777 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-07 01:48:44,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-07 01:48:44,777 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-07 01:48:44,777 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_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f64d9b496c4f5484a31fbfb0a7c6af8258ace1e653eee382e318ab929fd1285 [2021-12-07 01:48:44,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-07 01:48:44,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-07 01:48:44,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-07 01:48:44,990 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-07 01:48:44,991 INFO L275 PluginConnector]: CDTParser initialized [2021-12-07 01:48:44,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound1.c [2021-12-07 01:48:45,035 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/data/ac9e3d386/5ecfd9e4df3c4ee295f885601e4c5876/FLAGb2557979f [2021-12-07 01:48:45,428 INFO L306 CDTParser]: Found 1 translation units. [2021-12-07 01:48:45,428 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound1.c [2021-12-07 01:48:45,433 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/data/ac9e3d386/5ecfd9e4df3c4ee295f885601e4c5876/FLAGb2557979f [2021-12-07 01:48:45,443 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/data/ac9e3d386/5ecfd9e4df3c4ee295f885601e4c5876 [2021-12-07 01:48:45,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-07 01:48:45,446 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-07 01:48:45,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-07 01:48:45,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-07 01:48:45,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-07 01:48:45,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:48:45" (1/1) ... [2021-12-07 01:48:45,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13a144ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:48:45, skipping insertion in model container [2021-12-07 01:48:45,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:48:45" (1/1) ... [2021-12-07 01:48:45,456 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-07 01:48:45,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-07 01:48:45,580 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound1.c[538,551] [2021-12-07 01:48:45,594 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:48:45,601 INFO L203 MainTranslator]: Completed pre-run [2021-12-07 01:48:45,611 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound1.c[538,551] [2021-12-07 01:48:45,618 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-07 01:48:45,629 INFO L208 MainTranslator]: Completed translation [2021-12-07 01:48:45,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:48:45 WrapperNode [2021-12-07 01:48:45,629 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-07 01:48:45,630 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-07 01:48:45,630 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-07 01:48:45,630 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-07 01:48:45,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:48:45" (1/1) ... [2021-12-07 01:48:45,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:48:45" (1/1) ... [2021-12-07 01:48:45,657 INFO L137 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2021-12-07 01:48:45,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-07 01:48:45,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-07 01:48:45,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-07 01:48:45,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-07 01:48:45,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:48:45" (1/1) ... [2021-12-07 01:48:45,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:48:45" (1/1) ... [2021-12-07 01:48:45,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:48:45" (1/1) ... [2021-12-07 01:48:45,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:48:45" (1/1) ... [2021-12-07 01:48:45,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:48:45" (1/1) ... [2021-12-07 01:48:45,674 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:48:45" (1/1) ... [2021-12-07 01:48:45,675 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:48:45" (1/1) ... [2021-12-07 01:48:45,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-07 01:48:45,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-07 01:48:45,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-07 01:48:45,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-07 01:48:45,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:48:45" (1/1) ... [2021-12-07 01:48:45,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-07 01:48:45,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:48:45,709 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-07 01:48:45,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-07 01:48:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-07 01:48:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-07 01:48:45,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-07 01:48:45,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-07 01:48:45,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-07 01:48:45,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-07 01:48:45,785 INFO L236 CfgBuilder]: Building ICFG [2021-12-07 01:48:45,786 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-07 01:48:45,871 INFO L277 CfgBuilder]: Performing block encoding [2021-12-07 01:48:45,876 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-07 01:48:45,876 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-07 01:48:45,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:48:45 BoogieIcfgContainer [2021-12-07 01:48:45,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-07 01:48:45,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-07 01:48:45,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-07 01:48:45,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-07 01:48:45,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:48:45" (1/3) ... [2021-12-07 01:48:45,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f907ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:48:45, skipping insertion in model container [2021-12-07 01:48:45,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:48:45" (2/3) ... [2021-12-07 01:48:45,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f907ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:48:45, skipping insertion in model container [2021-12-07 01:48:45,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:48:45" (3/3) ... [2021-12-07 01:48:45,884 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_unwindbound1.c [2021-12-07 01:48:45,889 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-07 01:48:45,889 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-07 01:48:45,925 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-07 01:48:45,932 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-07 01:48:45,932 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-07 01:48:45,946 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-07 01:48:45,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-07 01:48:45,950 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:48:45,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:48:45,951 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:48:45,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:48:45,955 INFO L85 PathProgramCache]: Analyzing trace with hash -712527539, now seen corresponding path program 1 times [2021-12-07 01:48:45,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:48:45,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126457467] [2021-12-07 01:48:45,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:48:45,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:48:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:48:46,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:48:46,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:48:46,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126457467] [2021-12-07 01:48:46,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126457467] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:48:46,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:48:46,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-07 01:48:46,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584697509] [2021-12-07 01:48:46,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:48:46,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-07 01:48:46,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:48:46,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-07 01:48:46,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:48:46,103 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:48:46,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:48:46,120 INFO L93 Difference]: Finished difference Result 53 states and 87 transitions. [2021-12-07 01:48:46,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-07 01:48:46,122 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-07 01:48:46,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:48:46,128 INFO L225 Difference]: With dead ends: 53 [2021-12-07 01:48:46,129 INFO L226 Difference]: Without dead ends: 24 [2021-12-07 01:48:46,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-07 01:48:46,134 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:48:46,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:48:46,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-12-07 01:48:46,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-12-07 01:48:46,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-07 01:48:46,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions. [2021-12-07 01:48:46,165 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 10 [2021-12-07 01:48:46,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:48:46,166 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 34 transitions. [2021-12-07 01:48:46,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:48:46,166 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions. [2021-12-07 01:48:46,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-07 01:48:46,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:48:46,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:48:46,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-07 01:48:46,167 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:48:46,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:48:46,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1983932575, now seen corresponding path program 1 times [2021-12-07 01:48:46,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:48:46,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565381460] [2021-12-07 01:48:46,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:48:46,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:48:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:48:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:48:46,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:48:46,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565381460] [2021-12-07 01:48:46,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565381460] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:48:46,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:48:46,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:48:46,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308603893] [2021-12-07 01:48:46,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:48:46,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:48:46,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:48:46,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:48:46,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:48:46,234 INFO L87 Difference]: Start difference. First operand 24 states and 34 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:48:46,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:48:46,276 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2021-12-07 01:48:46,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:48:46,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-07 01:48:46,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:48:46,278 INFO L225 Difference]: With dead ends: 38 [2021-12-07 01:48:46,278 INFO L226 Difference]: Without dead ends: 36 [2021-12-07 01:48:46,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:48:46,280 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 15 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:48:46,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 112 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:48:46,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-07 01:48:46,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2021-12-07 01:48:46,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-07 01:48:46,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 37 transitions. [2021-12-07 01:48:46,294 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 37 transitions. Word has length 10 [2021-12-07 01:48:46,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:48:46,295 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 37 transitions. [2021-12-07 01:48:46,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:48:46,295 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 37 transitions. [2021-12-07 01:48:46,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-07 01:48:46,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:48:46,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:48:46,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-07 01:48:46,297 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:48:46,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:48:46,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1787143384, now seen corresponding path program 1 times [2021-12-07 01:48:46,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:48:46,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777151762] [2021-12-07 01:48:46,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:48:46,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:48:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:48:46,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:48:46,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:48:46,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777151762] [2021-12-07 01:48:46,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777151762] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:48:46,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:48:46,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-07 01:48:46,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100834538] [2021-12-07 01:48:46,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:48:46,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-07 01:48:46,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:48:46,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-07 01:48:46,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:48:46,347 INFO L87 Difference]: Start difference. First operand 28 states and 37 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:48:46,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:48:46,367 INFO L93 Difference]: Finished difference Result 44 states and 59 transitions. [2021-12-07 01:48:46,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-07 01:48:46,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-07 01:48:46,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:48:46,368 INFO L225 Difference]: With dead ends: 44 [2021-12-07 01:48:46,368 INFO L226 Difference]: Without dead ends: 30 [2021-12-07 01:48:46,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-07 01:48:46,371 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:48:46,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:48:46,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-07 01:48:46,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-12-07 01:48:46,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-07 01:48:46,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 39 transitions. [2021-12-07 01:48:46,380 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 39 transitions. Word has length 12 [2021-12-07 01:48:46,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:48:46,380 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 39 transitions. [2021-12-07 01:48:46,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-07 01:48:46,381 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 39 transitions. [2021-12-07 01:48:46,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-07 01:48:46,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:48:46,381 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:48:46,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-07 01:48:46,382 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:48:46,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:48:46,383 INFO L85 PathProgramCache]: Analyzing trace with hash 472519838, now seen corresponding path program 1 times [2021-12-07 01:48:46,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:48:46,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857729032] [2021-12-07 01:48:46,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:48:46,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:48:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:48:46,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-07 01:48:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:48:46,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-07 01:48:46,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:48:46,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857729032] [2021-12-07 01:48:46,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857729032] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:48:46,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:48:46,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:48:46,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579659964] [2021-12-07 01:48:46,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:48:46,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:48:46,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:48:46,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:48:46,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:48:46,465 INFO L87 Difference]: Start difference. First operand 30 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:48:46,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:48:46,515 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2021-12-07 01:48:46,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-07 01:48:46,515 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-07 01:48:46,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:48:46,517 INFO L225 Difference]: With dead ends: 44 [2021-12-07 01:48:46,517 INFO L226 Difference]: Without dead ends: 42 [2021-12-07 01:48:46,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:48:46,519 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 13 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:48:46,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 108 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:48:46,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-07 01:48:46,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2021-12-07 01:48:46,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-12-07 01:48:46,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2021-12-07 01:48:46,529 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 15 [2021-12-07 01:48:46,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:48:46,529 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2021-12-07 01:48:46,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-07 01:48:46,529 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2021-12-07 01:48:46,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-07 01:48:46,530 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:48:46,530 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:48:46,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-07 01:48:46,531 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:48:46,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:48:46,531 INFO L85 PathProgramCache]: Analyzing trace with hash 838495553, now seen corresponding path program 1 times [2021-12-07 01:48:46,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:48:46,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372376983] [2021-12-07 01:48:46,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:48:46,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:48:46,545 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:48:46,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [360256989] [2021-12-07 01:48:46,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:48:46,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:48:46,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:48:46,546 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:48:46,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-07 01:48:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:48:46,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-07 01:48:46,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:48:46,740 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-07 01:48:46,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:48:46,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:48:46,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372376983] [2021-12-07 01:48:46,740 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:48:46,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360256989] [2021-12-07 01:48:46,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360256989] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:48:46,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:48:46,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-07 01:48:46,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022063131] [2021-12-07 01:48:46,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:48:46,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-07 01:48:46,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:48:46,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-07 01:48:46,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-07 01:48:46,742 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-07 01:48:46,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:48:46,850 INFO L93 Difference]: Finished difference Result 63 states and 85 transitions. [2021-12-07 01:48:46,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-07 01:48:46,851 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2021-12-07 01:48:46,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:48:46,852 INFO L225 Difference]: With dead ends: 63 [2021-12-07 01:48:46,852 INFO L226 Difference]: Without dead ends: 48 [2021-12-07 01:48:46,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-07 01:48:46,854 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 46 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-07 01:48:46,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 137 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-07 01:48:46,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-12-07 01:48:46,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-12-07 01:48:46,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 32 states have internal predecessors, (38), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2021-12-07 01:48:46,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 62 transitions. [2021-12-07 01:48:46,865 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 62 transitions. Word has length 20 [2021-12-07 01:48:46,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:48:46,866 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 62 transitions. [2021-12-07 01:48:46,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-07 01:48:46,866 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 62 transitions. [2021-12-07 01:48:46,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-07 01:48:46,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:48:46,867 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:48:46,888 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-07 01:48:47,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:48:47,069 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:48:47,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:48:47,069 INFO L85 PathProgramCache]: Analyzing trace with hash 414140572, now seen corresponding path program 1 times [2021-12-07 01:48:47,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:48:47,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297704685] [2021-12-07 01:48:47,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:48:47,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:48:47,079 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:48:47,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2103971246] [2021-12-07 01:48:47,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:48:47,085 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:48:47,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:48:47,086 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:48:47,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-07 01:48:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-07 01:48:47,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-07 01:48:47,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-07 01:48:47,202 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-07 01:48:47,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-07 01:48:47,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-07 01:48:47,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297704685] [2021-12-07 01:48:47,203 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-07 01:48:47,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103971246] [2021-12-07 01:48:47,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103971246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-07 01:48:47,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-07 01:48:47,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-07 01:48:47,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898546131] [2021-12-07 01:48:47,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-07 01:48:47,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-07 01:48:47,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-07 01:48:47,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-07 01:48:47,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-07 01:48:47,205 INFO L87 Difference]: Start difference. First operand 48 states and 62 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-07 01:48:47,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-07 01:48:47,242 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2021-12-07 01:48:47,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-07 01:48:47,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2021-12-07 01:48:47,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-07 01:48:47,244 INFO L225 Difference]: With dead ends: 62 [2021-12-07 01:48:47,244 INFO L226 Difference]: Without dead ends: 54 [2021-12-07 01:48:47,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-07 01:48:47,245 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-07 01:48:47,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 94 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-07 01:48:47,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-12-07 01:48:47,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2021-12-07 01:48:47,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 36 states have internal predecessors, (43), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2021-12-07 01:48:47,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2021-12-07 01:48:47,256 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 28 [2021-12-07 01:48:47,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-07 01:48:47,256 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2021-12-07 01:48:47,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-07 01:48:47,257 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2021-12-07 01:48:47,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-07 01:48:47,258 INFO L506 BasicCegarLoop]: Found error trace [2021-12-07 01:48:47,258 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:48:47,277 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-07 01:48:47,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-07 01:48:47,460 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-07 01:48:47,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-07 01:48:47,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1091220578, now seen corresponding path program 1 times [2021-12-07 01:48:47,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-07 01:48:47,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796214234] [2021-12-07 01:48:47,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:48:47,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-07 01:48:47,502 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-07 01:48:47,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1767661700] [2021-12-07 01:48:47,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-07 01:48:47,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-07 01:48:47,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/z3 [2021-12-07 01:48:47,505 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-07 01:48:47,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-07 01:48:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:48:47,537 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-07 01:48:47,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-07 01:48:47,564 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-07 01:48:47,564 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-07 01:48:47,564 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-07 01:48:47,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-07 01:48:47,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-12-07 01:48:47,775 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-12-07 01:48:47,786 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-07 01:48:47,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:48:47 BoogieIcfgContainer [2021-12-07 01:48:47,830 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-07 01:48:47,831 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-07 01:48:47,831 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-07 01:48:47,831 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-07 01:48:47,832 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:48:45" (3/4) ... [2021-12-07 01:48:47,833 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-07 01:48:47,870 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/witness.graphml [2021-12-07 01:48:47,870 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-07 01:48:47,871 INFO L158 Benchmark]: Toolchain (without parser) took 2424.66ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 58.6MB in the beginning and 72.0MB in the end (delta: -13.4MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2021-12-07 01:48:47,871 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory was 75.0MB in the beginning and 74.9MB in the end (delta: 77.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 01:48:47,871 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.60ms. Allocated memory is still 100.7MB. Free memory was 58.4MB in the beginning and 76.3MB in the end (delta: -17.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-07 01:48:47,872 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.39ms. Allocated memory is still 100.7MB. Free memory was 76.3MB in the beginning and 74.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 01:48:47,872 INFO L158 Benchmark]: Boogie Preprocessor took 19.12ms. Allocated memory is still 100.7MB. Free memory was 74.6MB in the beginning and 73.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-07 01:48:47,872 INFO L158 Benchmark]: RCFGBuilder took 200.05ms. Allocated memory is still 100.7MB. Free memory was 73.5MB in the beginning and 63.8MB in the end (delta: 9.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-07 01:48:47,873 INFO L158 Benchmark]: TraceAbstraction took 1951.17ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 63.1MB in the beginning and 75.0MB in the end (delta: -11.9MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2021-12-07 01:48:47,873 INFO L158 Benchmark]: Witness Printer took 39.17ms. Allocated memory is still 123.7MB. Free memory was 75.0MB in the beginning and 72.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-07 01:48:47,875 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory was 75.0MB in the beginning and 74.9MB in the end (delta: 77.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 182.60ms. Allocated memory is still 100.7MB. Free memory was 58.4MB in the beginning and 76.3MB in the end (delta: -17.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.39ms. Allocated memory is still 100.7MB. Free memory was 76.3MB in the beginning and 74.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.12ms. Allocated memory is still 100.7MB. Free memory was 74.6MB in the beginning and 73.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 200.05ms. Allocated memory is still 100.7MB. Free memory was 73.5MB in the beginning and 63.8MB in the end (delta: 9.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1951.17ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 63.1MB in the beginning and 75.0MB in the end (delta: -11.9MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. * Witness Printer took 39.17ms. Allocated memory is still 123.7MB. Free memory was 75.0MB in the beginning and 72.0MB in the end (delta: 3.0MB). 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 - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] unsigned int A, B; [L25] long long r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L28] CALL assume_abort_if_not(B >= 1) [L12] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L28] RET assume_abort_if_not(B >= 1) [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 VAL [A=-1, B=4294967295, counter=0, d=4294967295, p=1, q=0, r=4294967295] [L35] EXPR counter++ VAL [A=-1, B=4294967295, counter=1, counter++=0, d=4294967295, p=1, q=0, r=4294967295] [L35] COND TRUE counter++<1 [L36] CALL __VERIFIER_assert(q == 0) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L36] RET __VERIFIER_assert(q == 0) VAL [A=-1, B=4294967295, counter=1, d=4294967295, p=1, q=0, r=4294967295] [L37] CALL __VERIFIER_assert(r == A) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L37] RET __VERIFIER_assert(r == A) VAL [A=-1, B=4294967295, counter=1, d=4294967295, p=1, q=0, r=4294967295] [L38] CALL __VERIFIER_assert(d == B * p) VAL [\old(cond)=1, counter=1] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L38] RET __VERIFIER_assert(d == B * p) VAL [A=-1, B=4294967295, counter=1, d=4294967295, p=1, q=0, r=4294967295] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [A=-1, B=4294967295, counter=1, d=8589934590, p=2, q=0, r=4294967295] [L35] EXPR counter++ VAL [A=-1, B=4294967295, counter=2, counter++=1, d=8589934590, p=2, q=0, r=4294967295] [L35] COND FALSE !(counter++<1) [L45] EXPR counter++ VAL [A=-1, B=4294967295, counter=3, counter++=2, d=8589934590, p=2, q=0, r=4294967295] [L45] COND FALSE !(counter++<1) [L59] CALL __VERIFIER_assert(A == d*q + r) VAL [\old(cond)=1, counter=3] [L15] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L59] RET __VERIFIER_assert(A == d*q + r) VAL [A=-1, B=4294967295, counter=3, d=8589934590, p=2, q=0, r=4294967295] [L60] CALL __VERIFIER_assert(B == d) VAL [\old(cond)=0, counter=3] [L15] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=3] [L17] reach_error() VAL [\old(cond)=0, cond=0, counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 7, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 99 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 85 mSDsluCounter, 578 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 381 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 156 IncrementalHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 197 mSDtfsCounter, 156 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=6, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 17 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 316 SizeOfPredicates, 4 NumberOfNonLiveVariables, 159 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 28/28 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-07 01:48:47,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_832e4e87-81e1-43e1-975e-c8fb84bdab29/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE