./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_a3726062-1b99-4309-a5b1-9e3e9e85284c/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3726062-1b99-4309-a5b1-9e3e9e85284c/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3726062-1b99-4309-a5b1-9e3e9e85284c/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3726062-1b99-4309-a5b1-9e3e9e85284c/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3726062-1b99-4309-a5b1-9e3e9e85284c/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3726062-1b99-4309-a5b1-9e3e9e85284c/bin/utaipan-7li7fVZpFI --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 --- 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-5e519f3 [2022-11-03 01:57:39,598 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:57:39,600 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:57:39,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:57:39,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:57:39,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:57:39,630 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:57:39,631 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:57:39,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:57:39,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:57:39,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:57:39,636 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:57:39,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:57:39,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:57:39,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:57:39,641 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:57:39,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:57:39,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:57:39,649 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:57:39,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:57:39,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:57:39,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:57:39,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:57:39,659 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:57:39,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:57:39,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:57:39,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:57:39,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:57:39,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:57:39,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:57:39,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:57:39,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:57:39,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:57:39,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:57:39,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:57:39,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:57:39,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:57:39,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:57:39,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:57:39,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:57:39,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:57:39,682 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3726062-1b99-4309-a5b1-9e3e9e85284c/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 01:57:39,728 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:57:39,728 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:57:39,729 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:57:39,729 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:57:39,730 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:57:39,730 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:57:39,731 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:57:39,731 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:57:39,731 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:57:39,732 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:57:39,733 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:57:39,733 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:57:39,733 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:57:39,733 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:57:39,734 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:57:39,734 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:57:39,734 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:57:39,735 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:57:39,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:57:39,736 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:57:39,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:57:39,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:57:39,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:57:39,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:57:39,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:57:39,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:57:39,739 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:57:39,739 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:57:39,739 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:57:39,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:57:39,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:57:39,740 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:57:39,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:57:39,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:57:39,741 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:57:39,741 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:57:39,742 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:57:39,742 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:57:39,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:57:39,742 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:57:39,743 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:57:39,743 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_a3726062-1b99-4309-a5b1-9e3e9e85284c/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3726062-1b99-4309-a5b1-9e3e9e85284c/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 [2022-11-03 01:57:40,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:57:40,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:57:40,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:57:40,093 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:57:40,094 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:57:40,095 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3726062-1b99-4309-a5b1-9e3e9e85284c/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-11-03 01:57:40,167 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3726062-1b99-4309-a5b1-9e3e9e85284c/bin/utaipan-7li7fVZpFI/data/5a1aad106/1c5996c806c64984a32ae72ede81c275/FLAG29615d2ba [2022-11-03 01:57:40,703 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:57:40,705 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3726062-1b99-4309-a5b1-9e3e9e85284c/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-11-03 01:57:40,713 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3726062-1b99-4309-a5b1-9e3e9e85284c/bin/utaipan-7li7fVZpFI/data/5a1aad106/1c5996c806c64984a32ae72ede81c275/FLAG29615d2ba [2022-11-03 01:57:41,159 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3726062-1b99-4309-a5b1-9e3e9e85284c/bin/utaipan-7li7fVZpFI/data/5a1aad106/1c5996c806c64984a32ae72ede81c275 [2022-11-03 01:57:41,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:57:41,166 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:57:41,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:57:41,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:57:41,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:57:41,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:57:41" (1/1) ... [2022-11-03 01:57:41,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cbcb530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:41, skipping insertion in model container [2022-11-03 01:57:41,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:57:41" (1/1) ... [2022-11-03 01:57:41,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:57:41,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:57:41,456 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_a3726062-1b99-4309-a5b1-9e3e9e85284c/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c[2575,2588] [2022-11-03 01:57:41,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:57:41,480 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:57:41,517 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_a3726062-1b99-4309-a5b1-9e3e9e85284c/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c[2575,2588] [2022-11-03 01:57:41,520 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:57:41,531 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:57:41,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:41 WrapperNode [2022-11-03 01:57:41,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:57:41,532 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:57:41,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:57:41,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:57:41,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:41" (1/1) ... [2022-11-03 01:57:41,562 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:41" (1/1) ... [2022-11-03 01:57:41,604 INFO L138 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 179 [2022-11-03 01:57:41,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:57:41,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:57:41,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:57:41,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:57:41,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:41" (1/1) ... [2022-11-03 01:57:41,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:41" (1/1) ... [2022-11-03 01:57:41,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:41" (1/1) ... [2022-11-03 01:57:41,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:41" (1/1) ... [2022-11-03 01:57:41,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:41" (1/1) ... [2022-11-03 01:57:41,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:41" (1/1) ... [2022-11-03 01:57:41,664 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:41" (1/1) ... [2022-11-03 01:57:41,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:41" (1/1) ... [2022-11-03 01:57:41,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:57:41,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:57:41,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:57:41,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:57:41,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:41" (1/1) ... [2022-11-03 01:57:41,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:57:41,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3726062-1b99-4309-a5b1-9e3e9e85284c/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:57:41,717 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3726062-1b99-4309-a5b1-9e3e9e85284c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:57:41,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3726062-1b99-4309-a5b1-9e3e9e85284c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:57:41,764 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:57:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-03 01:57:41,765 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-03 01:57:41,765 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-03 01:57:41,766 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-03 01:57:41,766 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-03 01:57:41,766 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-03 01:57:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:57:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 01:57:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 01:57:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:57:41,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:57:41,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 01:57:41,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 01:57:41,769 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-03 01:57:41,926 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:57:41,928 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:57:42,238 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:57:42,249 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:57:42,249 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 01:57:42,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:57:42 BoogieIcfgContainer [2022-11-03 01:57:42,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:57:42,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:57:42,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:57:42,257 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:57:42,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:57:41" (1/3) ... [2022-11-03 01:57:42,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e464e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:57:42, skipping insertion in model container [2022-11-03 01:57:42,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:57:41" (2/3) ... [2022-11-03 01:57:42,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e464e89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:57:42, skipping insertion in model container [2022-11-03 01:57:42,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:57:42" (3/3) ... [2022-11-03 01:57:42,260 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2022-11-03 01:57:42,269 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-03 01:57:42,279 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:57:42,280 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:57:42,280 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-03 01:57:42,478 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-03 01:57:42,520 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-03 01:57:42,535 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 235 transitions, 494 flow [2022-11-03 01:57:42,544 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 235 transitions, 494 flow [2022-11-03 01:57:42,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 235 transitions, 494 flow [2022-11-03 01:57:42,659 INFO L130 PetriNetUnfolder]: 17/232 cut-off events. [2022-11-03 01:57:42,659 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-03 01:57:42,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 232 events. 17/232 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 511 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2022-11-03 01:57:42,680 INFO L118 LiptonReduction]: Number of co-enabled transitions 15390 [2022-11-03 01:57:51,351 INFO L133 LiptonReduction]: Checked pairs total: 14199 [2022-11-03 01:57:51,352 INFO L135 LiptonReduction]: Total number of compositions: 285 [2022-11-03 01:57:51,360 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 64 flow [2022-11-03 01:57:51,375 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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) [2022-11-03 01:57:51,392 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:57:51,398 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=FINITE_AUTOMATA, 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;@182fd0fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:57:51,399 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-03 01:57:51,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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) [2022-11-03 01:57:51,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 01:57:51,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:51,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:57:51,408 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-03 01:57:51,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:51,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1647093824, now seen corresponding path program 1 times [2022-11-03 01:57:51,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:51,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082808772] [2022-11-03 01:57:51,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:51,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:54,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:57:54,244 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:54,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082808772] [2022-11-03 01:57:54,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082808772] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:54,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:57:54,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:57:54,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531083951] [2022-11-03 01:57:54,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:54,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:57:54,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:57:54,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:57:54,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:57:54,280 INFO L87 Difference]: Start difference. First operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 43 states have internal predecessors, (80), 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 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2022-11-03 01:57:54,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:54,628 INFO L93 Difference]: Finished difference Result 67 states and 106 transitions. [2022-11-03 01:57:54,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:57:54,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) Word has length 16 [2022-11-03 01:57:54,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:54,640 INFO L225 Difference]: With dead ends: 67 [2022-11-03 01:57:54,640 INFO L226 Difference]: Without dead ends: 52 [2022-11-03 01:57:54,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:57:54,644 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:54,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:57:54,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-11-03 01:57:54,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2022-11-03 01:57:54,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.7209302325581395) internal successors, (74), 43 states have internal predecessors, (74), 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) [2022-11-03 01:57:54,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 74 transitions. [2022-11-03 01:57:54,679 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 74 transitions. Word has length 16 [2022-11-03 01:57:54,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:54,679 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 74 transitions. [2022-11-03 01:57:54,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2022-11-03 01:57:54,680 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 74 transitions. [2022-11-03 01:57:54,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 01:57:54,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:54,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:57:54,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:57:54,682 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-03 01:57:54,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:54,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1406968820, now seen corresponding path program 2 times [2022-11-03 01:57:54,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:54,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199112984] [2022-11-03 01:57:54,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:54,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:56,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:57:56,048 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:56,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199112984] [2022-11-03 01:57:56,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199112984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:56,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:57:56,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:57:56,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259881639] [2022-11-03 01:57:56,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:56,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:57:56,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:57:56,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:57:56,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:57:56,052 INFO L87 Difference]: Start difference. First operand 44 states and 74 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2022-11-03 01:57:56,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:56,345 INFO L93 Difference]: Finished difference Result 63 states and 94 transitions. [2022-11-03 01:57:56,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:57:56,345 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) Word has length 16 [2022-11-03 01:57:56,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:56,346 INFO L225 Difference]: With dead ends: 63 [2022-11-03 01:57:56,346 INFO L226 Difference]: Without dead ends: 44 [2022-11-03 01:57:56,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:57:56,348 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:56,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:57:56,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-11-03 01:57:56,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 36. [2022-11-03 01:57:56,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.6285714285714286) internal successors, (57), 35 states have internal predecessors, (57), 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) [2022-11-03 01:57:56,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 57 transitions. [2022-11-03 01:57:56,367 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 57 transitions. Word has length 16 [2022-11-03 01:57:56,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:56,368 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 57 transitions. [2022-11-03 01:57:56,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2022-11-03 01:57:56,368 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 57 transitions. [2022-11-03 01:57:56,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 01:57:56,369 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:56,369 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:57:56,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:57:56,370 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-03 01:57:56,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:56,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1650580380, now seen corresponding path program 3 times [2022-11-03 01:57:56,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:56,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139532159] [2022-11-03 01:57:56,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:56,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:56,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:57,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:57:57,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:57,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139532159] [2022-11-03 01:57:57,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139532159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:57,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:57:57,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:57:57,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068722791] [2022-11-03 01:57:57,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:57,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:57:57,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:57:57,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:57:57,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:57:57,670 INFO L87 Difference]: Start difference. First operand 36 states and 57 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2022-11-03 01:57:58,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:58,137 INFO L93 Difference]: Finished difference Result 51 states and 70 transitions. [2022-11-03 01:57:58,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:57:58,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) Word has length 16 [2022-11-03 01:57:58,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:58,138 INFO L225 Difference]: With dead ends: 51 [2022-11-03 01:57:58,139 INFO L226 Difference]: Without dead ends: 36 [2022-11-03 01:57:58,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:57:58,140 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:58,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:57:58,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-03 01:57:58,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2022-11-03 01:57:58,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 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) [2022-11-03 01:57:58,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2022-11-03 01:57:58,150 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 16 [2022-11-03 01:57:58,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:58,150 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2022-11-03 01:57:58,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2022-11-03 01:57:58,151 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2022-11-03 01:57:58,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 01:57:58,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:58,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:57:58,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:57:58,155 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-03 01:57:58,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:58,155 INFO L85 PathProgramCache]: Analyzing trace with hash 970183012, now seen corresponding path program 4 times [2022-11-03 01:57:58,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:58,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891305344] [2022-11-03 01:57:58,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:58,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:58,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:57:59,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:57:59,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:57:59,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891305344] [2022-11-03 01:57:59,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891305344] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:57:59,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:57:59,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:57:59,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691639051] [2022-11-03 01:57:59,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:57:59,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:57:59,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:57:59,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:57:59,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:57:59,313 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2022-11-03 01:57:59,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:57:59,638 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2022-11-03 01:57:59,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:57:59,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) Word has length 16 [2022-11-03 01:57:59,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:57:59,639 INFO L225 Difference]: With dead ends: 37 [2022-11-03 01:57:59,639 INFO L226 Difference]: Without dead ends: 24 [2022-11-03 01:57:59,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:57:59,640 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:57:59,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:57:59,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-03 01:57:59,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-03 01:57:59,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.3478260869565217) internal successors, (31), 23 states have internal predecessors, (31), 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) [2022-11-03 01:57:59,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2022-11-03 01:57:59,644 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 16 [2022-11-03 01:57:59,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:57:59,645 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-11-03 01:57:59,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2022-11-03 01:57:59,645 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-11-03 01:57:59,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 01:57:59,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:57:59,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:57:59,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:57:59,647 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-03 01:57:59,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:57:59,647 INFO L85 PathProgramCache]: Analyzing trace with hash -175876456, now seen corresponding path program 5 times [2022-11-03 01:57:59,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:57:59,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429498331] [2022-11-03 01:57:59,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:57:59,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:57:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:00,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:00,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:00,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429498331] [2022-11-03 01:58:00,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429498331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:00,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:00,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:58:00,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933349388] [2022-11-03 01:58:00,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:00,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:58:00,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:00,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:58:00,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:58:00,742 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2022-11-03 01:58:01,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:01,084 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-11-03 01:58:01,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:58:01,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) Word has length 16 [2022-11-03 01:58:01,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:01,085 INFO L225 Difference]: With dead ends: 31 [2022-11-03 01:58:01,085 INFO L226 Difference]: Without dead ends: 22 [2022-11-03 01:58:01,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:58:01,086 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:01,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:58:01,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-11-03 01:58:01,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-11-03 01:58:01,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 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) [2022-11-03 01:58:01,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2022-11-03 01:58:01,089 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 16 [2022-11-03 01:58:01,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:01,089 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2022-11-03 01:58:01,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2022-11-03 01:58:01,089 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2022-11-03 01:58:01,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 01:58:01,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:58:01,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:58:01,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:58:01,090 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-03 01:58:01,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:58:01,091 INFO L85 PathProgramCache]: Analyzing trace with hash -164140840, now seen corresponding path program 6 times [2022-11-03 01:58:01,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:58:01,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96836569] [2022-11-03 01:58:01,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:58:01,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:58:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:58:02,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:58:02,110 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:58:02,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96836569] [2022-11-03 01:58:02,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96836569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:58:02,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:58:02,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:58:02,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143138544] [2022-11-03 01:58:02,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:58:02,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 01:58:02,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:58:02,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 01:58:02,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 01:58:02,112 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2022-11-03 01:58:02,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:58:02,346 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2022-11-03 01:58:02,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 01:58:02,347 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) Word has length 16 [2022-11-03 01:58:02,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:58:02,347 INFO L225 Difference]: With dead ends: 21 [2022-11-03 01:58:02,347 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 01:58:02,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 01:58:02,348 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:58:02,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:58:02,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 01:58:02,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 01:58:02,349 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) [2022-11-03 01:58:02,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 01:58:02,349 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2022-11-03 01:58:02,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:58:02,350 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 01:58:02,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 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) [2022-11-03 01:58:02,350 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 01:58:02,350 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 01:58:02,352 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-03 01:58:02,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-03 01:58:02,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-03 01:58:02,353 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-03 01:58:02,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:58:02,361 INFO L444 BasicCegarLoop]: Path program histogram: [6] [2022-11-03 01:58:02,365 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-03 01:58:02,365 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 01:58:02,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:58:02 BasicIcfg [2022-11-03 01:58:02,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 01:58:02,369 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 01:58:02,369 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 01:58:02,369 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 01:58:02,370 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:57:42" (3/4) ... [2022-11-03 01:58:02,372 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 01:58:02,379 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-03 01:58:02,379 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-03 01:58:02,379 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-03 01:58:02,386 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-03 01:58:02,386 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-03 01:58:02,386 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 01:58:02,386 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 01:58:02,431 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3726062-1b99-4309-a5b1-9e3e9e85284c/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 01:58:02,432 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 01:58:02,433 INFO L158 Benchmark]: Toolchain (without parser) took 21266.39ms. Allocated memory was 83.9MB in the beginning and 314.6MB in the end (delta: 230.7MB). Free memory was 46.0MB in the beginning and 270.8MB in the end (delta: -224.8MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2022-11-03 01:58:02,433 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory was 62.5MB in the beginning and 62.5MB in the end (delta: 35.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:58:02,433 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.24ms. Allocated memory was 83.9MB in the beginning and 111.1MB in the end (delta: 27.3MB). Free memory was 45.8MB in the beginning and 86.4MB in the end (delta: -40.6MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2022-11-03 01:58:02,434 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.48ms. Allocated memory is still 111.1MB. Free memory was 86.4MB in the beginning and 84.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:58:02,434 INFO L158 Benchmark]: Boogie Preprocessor took 61.83ms. Allocated memory is still 111.1MB. Free memory was 84.2MB in the beginning and 82.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:58:02,434 INFO L158 Benchmark]: RCFGBuilder took 583.15ms. Allocated memory is still 111.1MB. Free memory was 82.6MB in the beginning and 64.2MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-03 01:58:02,435 INFO L158 Benchmark]: TraceAbstraction took 20114.27ms. Allocated memory was 111.1MB in the beginning and 314.6MB in the end (delta: 203.4MB). Free memory was 63.6MB in the beginning and 273.9MB in the end (delta: -210.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 01:58:02,435 INFO L158 Benchmark]: Witness Printer took 62.85ms. Allocated memory is still 314.6MB. Free memory was 273.9MB in the beginning and 270.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:58:02,438 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory was 62.5MB in the beginning and 62.5MB in the end (delta: 35.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 362.24ms. Allocated memory was 83.9MB in the beginning and 111.1MB in the end (delta: 27.3MB). Free memory was 45.8MB in the beginning and 86.4MB in the end (delta: -40.6MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 73.48ms. Allocated memory is still 111.1MB. Free memory was 86.4MB in the beginning and 84.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.83ms. Allocated memory is still 111.1MB. Free memory was 84.2MB in the beginning and 82.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 583.15ms. Allocated memory is still 111.1MB. Free memory was 82.6MB in the beginning and 64.2MB in the end (delta: 18.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 20114.27ms. Allocated memory was 111.1MB in the beginning and 314.6MB in the end (delta: 203.4MB). Free memory was 63.6MB in the beginning and 273.9MB in the end (delta: -210.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 62.85ms. Allocated memory is still 314.6MB. Free memory was 273.9MB in the beginning and 270.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.8s, 228 PlacesBefore, 30 PlacesAfterwards, 235 TransitionsBefore, 20 TransitionsAfterwards, 15390 CoEnabledTransitionPairs, 8 FixpointIterations, 73 TrivialSequentialCompositions, 135 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 56 ConcurrentYvCompositions, 17 ChoiceCompositions, 285 TotalNumberOfCompositions, 14199 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 14199, positive: 14199, positive conditional: 0, positive unconditional: 14199, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 12099, positive: 12099, positive conditional: 0, positive unconditional: 12099, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 12099, positive: 12099, positive conditional: 0, positive unconditional: 12099, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 14199, positive: 2100, positive conditional: 0, positive unconditional: 2100, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 12099, unknown conditional: 0, unknown unconditional: 12099] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - 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: 81]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 345 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 19.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 168 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 168 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 185 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 418 IncrementalHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 418 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, InterpolantAutomatonStates: 36, 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, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3404 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-03 01:58:02,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3726062-1b99-4309-a5b1-9e3e9e85284c/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE